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FDA grants orphan designation to DHODH inhibitor for AML
ASLAN003 is a small molecule inhibitor of the human dihydroorotate dehydrogenase (DHODH) enzyme. This second-generation DHODH inhibitor is being developed by Aslan Pharmaceuticals. The company is currently conducting a phase 2 trial (NCT03451084) of ASLAN003 in patients with newly diagnosed or relapsed/refractory AML. Aslan expects to report interim data from this trial in the second half of 2018.
Aslan has already completed a phase 1 trial (NCT01992367) of ASLAN003 in healthy volunteers. The results suggested that ASLAN003 has an “excellent” pharmacokinetic profile, according to Aslan, and the drug was considered well tolerated in the volunteers.
ASLAN003 has also demonstrated “potent” inhibition of DHODH, according to the drug sponsor. In fact, the company said the binding affinity of ASLAN003 to DHODH has proven to be up to two orders of magnitude stronger than first-generation DHODH inhibitors, such as leflunomide and teriflunomide, but it has less toxicity.
In addition, ASLAN003 has been shown to differentiate blast cells into granulocytes in AML cell lines that do not respond to all-trans retinoic acid. These results were published in Cell in 2016.
ASLAN003 is a small molecule inhibitor of the human dihydroorotate dehydrogenase (DHODH) enzyme. This second-generation DHODH inhibitor is being developed by Aslan Pharmaceuticals. The company is currently conducting a phase 2 trial (NCT03451084) of ASLAN003 in patients with newly diagnosed or relapsed/refractory AML. Aslan expects to report interim data from this trial in the second half of 2018.
Aslan has already completed a phase 1 trial (NCT01992367) of ASLAN003 in healthy volunteers. The results suggested that ASLAN003 has an “excellent” pharmacokinetic profile, according to Aslan, and the drug was considered well tolerated in the volunteers.
ASLAN003 has also demonstrated “potent” inhibition of DHODH, according to the drug sponsor. In fact, the company said the binding affinity of ASLAN003 to DHODH has proven to be up to two orders of magnitude stronger than first-generation DHODH inhibitors, such as leflunomide and teriflunomide, but it has less toxicity.
In addition, ASLAN003 has been shown to differentiate blast cells into granulocytes in AML cell lines that do not respond to all-trans retinoic acid. These results were published in Cell in 2016.
ASLAN003 is a small molecule inhibitor of the human dihydroorotate dehydrogenase (DHODH) enzyme. This second-generation DHODH inhibitor is being developed by Aslan Pharmaceuticals. The company is currently conducting a phase 2 trial (NCT03451084) of ASLAN003 in patients with newly diagnosed or relapsed/refractory AML. Aslan expects to report interim data from this trial in the second half of 2018.
Aslan has already completed a phase 1 trial (NCT01992367) of ASLAN003 in healthy volunteers. The results suggested that ASLAN003 has an “excellent” pharmacokinetic profile, according to Aslan, and the drug was considered well tolerated in the volunteers.
ASLAN003 has also demonstrated “potent” inhibition of DHODH, according to the drug sponsor. In fact, the company said the binding affinity of ASLAN003 to DHODH has proven to be up to two orders of magnitude stronger than first-generation DHODH inhibitors, such as leflunomide and teriflunomide, but it has less toxicity.
In addition, ASLAN003 has been shown to differentiate blast cells into granulocytes in AML cell lines that do not respond to all-trans retinoic acid. These results were published in Cell in 2016.
Role of SES in childhood cancer survival disparities
Socioeconomic status (SES) may explain some racial/ethnic disparities in childhood cancer survival, according to new research.
The study showed that whites had a significant survival advantage over blacks and Hispanics for several childhood cancers.
SES significantly mediated the association between race/ethnicity and survival for acute lymphoblastic leukemia (ALL), acute myeloid leukemia (AML), neuroblastoma, and non-Hodgkin lymphoma (NHL).
Rebecca Kehm, PhD, of Columbia University in New York, New York, and her colleagues reported these findings in Cancer alongside a related editorial.
The researchers examined population-based cancer survival data from the Surveillance, Epidemiology, and End Results database.
The team collected information on 31,866 patients, ages 0 to 19, who were diagnosed with cancer between 2000 and 2011.
Survival differences by race/ethnicity
The researchers found that whites had a significant survival advantage over blacks for the cancers listed in the following table.
Survival—black vs white | |||
Cancer | Mortality hazard ratio | 95% confidence interval | P value |
ALL | 1.43 | 1.15-1.77 | <0.01 |
AML | 1.68 | 1.36-2.07 | <0.001 |
Neuroblastoma | 1.38 | 1.08-1.75 | 0.01 |
NHL | 1.53 | 1.14-2.07 | 0.01 |
Hodgkin lymphoma | 1.66 | 1.06-2.60 | 0.03 |
Astrocytoma | 1.95 | 1.57-2.43 | <0.001 |
Non-astrocytoma CNS tumor | 1.53 | 1.25-1.88 | <0.001 |
Non-rhabdomyosarcoma STS | 1.40 | 1.06-1.84 | 0.02 |
Rhabdomyosarcoma | 1.44 | 1.10-1.88 | 0.01 |
In addition, whites had a significant survival advantage over Hispanics for the following cancers.
Survival—Hispanic vs white | |||
Cancer | Mortality hazard ratio | 95% confidence interval | P value |
ALL | 1.63 | 1.43-1.86 | <0.001 |
Neuroblastoma | 1.31 | 1.04-1.65 | 0.02 |
NHL | 1.65 | 1.29-2.12 | <0.001 |
Astrocytoma | 1.34 | 1.10-1.64 | <0.01 |
Wilms tumor | 1.60 | 1.04-2.45 | 0.03 |
Germ cell tumor | 1.63 | 1.19-2.24 | <0.01 |
Impact of SES
SES significantly mediated the association between race/ethnicity and survival for ALL, AML, neuroblastoma, and NHL but not for Hodgkin lymphoma or other cancers.
For black versus white patients, SES reduced the original association between race/ethnicity and survival by:
- 44% for ALL
- 28% for AML
- 49% for neuroblastoma
- 34% for NHL.
For Hispanics versus whites, SES reduced the original association between race/ethnicity and survival by:
- 31% for ALL
- 73% for AML
- 48% for neuroblastoma
- 28% for NHL.
“These findings provide insight for future intervention efforts aimed at closing the survival gap,” Dr Kehm said.
“For cancers in which socioeconomic status is a key factor in explaining racial and ethnic survival disparities, behavioral and supportive interventions that address social and economic barriers to effective care are warranted. However, for cancers in which survival is less influenced by socioeconomic status, more research is needed on underlying differences in tumor biology and drug processing.”
This research was supported by a grant from the National Institutes of Health, and the study’s authors made no disclosures.
Socioeconomic status (SES) may explain some racial/ethnic disparities in childhood cancer survival, according to new research.
The study showed that whites had a significant survival advantage over blacks and Hispanics for several childhood cancers.
SES significantly mediated the association between race/ethnicity and survival for acute lymphoblastic leukemia (ALL), acute myeloid leukemia (AML), neuroblastoma, and non-Hodgkin lymphoma (NHL).
Rebecca Kehm, PhD, of Columbia University in New York, New York, and her colleagues reported these findings in Cancer alongside a related editorial.
The researchers examined population-based cancer survival data from the Surveillance, Epidemiology, and End Results database.
The team collected information on 31,866 patients, ages 0 to 19, who were diagnosed with cancer between 2000 and 2011.
Survival differences by race/ethnicity
The researchers found that whites had a significant survival advantage over blacks for the cancers listed in the following table.
Survival—black vs white | |||
Cancer | Mortality hazard ratio | 95% confidence interval | P value |
ALL | 1.43 | 1.15-1.77 | <0.01 |
AML | 1.68 | 1.36-2.07 | <0.001 |
Neuroblastoma | 1.38 | 1.08-1.75 | 0.01 |
NHL | 1.53 | 1.14-2.07 | 0.01 |
Hodgkin lymphoma | 1.66 | 1.06-2.60 | 0.03 |
Astrocytoma | 1.95 | 1.57-2.43 | <0.001 |
Non-astrocytoma CNS tumor | 1.53 | 1.25-1.88 | <0.001 |
Non-rhabdomyosarcoma STS | 1.40 | 1.06-1.84 | 0.02 |
Rhabdomyosarcoma | 1.44 | 1.10-1.88 | 0.01 |
In addition, whites had a significant survival advantage over Hispanics for the following cancers.
Survival—Hispanic vs white | |||
Cancer | Mortality hazard ratio | 95% confidence interval | P value |
ALL | 1.63 | 1.43-1.86 | <0.001 |
Neuroblastoma | 1.31 | 1.04-1.65 | 0.02 |
NHL | 1.65 | 1.29-2.12 | <0.001 |
Astrocytoma | 1.34 | 1.10-1.64 | <0.01 |
Wilms tumor | 1.60 | 1.04-2.45 | 0.03 |
Germ cell tumor | 1.63 | 1.19-2.24 | <0.01 |
Impact of SES
SES significantly mediated the association between race/ethnicity and survival for ALL, AML, neuroblastoma, and NHL but not for Hodgkin lymphoma or other cancers.
For black versus white patients, SES reduced the original association between race/ethnicity and survival by:
- 44% for ALL
- 28% for AML
- 49% for neuroblastoma
- 34% for NHL.
For Hispanics versus whites, SES reduced the original association between race/ethnicity and survival by:
- 31% for ALL
- 73% for AML
- 48% for neuroblastoma
- 28% for NHL.
“These findings provide insight for future intervention efforts aimed at closing the survival gap,” Dr Kehm said.
“For cancers in which socioeconomic status is a key factor in explaining racial and ethnic survival disparities, behavioral and supportive interventions that address social and economic barriers to effective care are warranted. However, for cancers in which survival is less influenced by socioeconomic status, more research is needed on underlying differences in tumor biology and drug processing.”
This research was supported by a grant from the National Institutes of Health, and the study’s authors made no disclosures.
Socioeconomic status (SES) may explain some racial/ethnic disparities in childhood cancer survival, according to new research.
The study showed that whites had a significant survival advantage over blacks and Hispanics for several childhood cancers.
SES significantly mediated the association between race/ethnicity and survival for acute lymphoblastic leukemia (ALL), acute myeloid leukemia (AML), neuroblastoma, and non-Hodgkin lymphoma (NHL).
Rebecca Kehm, PhD, of Columbia University in New York, New York, and her colleagues reported these findings in Cancer alongside a related editorial.
The researchers examined population-based cancer survival data from the Surveillance, Epidemiology, and End Results database.
The team collected information on 31,866 patients, ages 0 to 19, who were diagnosed with cancer between 2000 and 2011.
Survival differences by race/ethnicity
The researchers found that whites had a significant survival advantage over blacks for the cancers listed in the following table.
Survival—black vs white | |||
Cancer | Mortality hazard ratio | 95% confidence interval | P value |
ALL | 1.43 | 1.15-1.77 | <0.01 |
AML | 1.68 | 1.36-2.07 | <0.001 |
Neuroblastoma | 1.38 | 1.08-1.75 | 0.01 |
NHL | 1.53 | 1.14-2.07 | 0.01 |
Hodgkin lymphoma | 1.66 | 1.06-2.60 | 0.03 |
Astrocytoma | 1.95 | 1.57-2.43 | <0.001 |
Non-astrocytoma CNS tumor | 1.53 | 1.25-1.88 | <0.001 |
Non-rhabdomyosarcoma STS | 1.40 | 1.06-1.84 | 0.02 |
Rhabdomyosarcoma | 1.44 | 1.10-1.88 | 0.01 |
In addition, whites had a significant survival advantage over Hispanics for the following cancers.
Survival—Hispanic vs white | |||
Cancer | Mortality hazard ratio | 95% confidence interval | P value |
ALL | 1.63 | 1.43-1.86 | <0.001 |
Neuroblastoma | 1.31 | 1.04-1.65 | 0.02 |
NHL | 1.65 | 1.29-2.12 | <0.001 |
Astrocytoma | 1.34 | 1.10-1.64 | <0.01 |
Wilms tumor | 1.60 | 1.04-2.45 | 0.03 |
Germ cell tumor | 1.63 | 1.19-2.24 | <0.01 |
Impact of SES
SES significantly mediated the association between race/ethnicity and survival for ALL, AML, neuroblastoma, and NHL but not for Hodgkin lymphoma or other cancers.
For black versus white patients, SES reduced the original association between race/ethnicity and survival by:
- 44% for ALL
- 28% for AML
- 49% for neuroblastoma
- 34% for NHL.
For Hispanics versus whites, SES reduced the original association between race/ethnicity and survival by:
- 31% for ALL
- 73% for AML
- 48% for neuroblastoma
- 28% for NHL.
“These findings provide insight for future intervention efforts aimed at closing the survival gap,” Dr Kehm said.
“For cancers in which socioeconomic status is a key factor in explaining racial and ethnic survival disparities, behavioral and supportive interventions that address social and economic barriers to effective care are warranted. However, for cancers in which survival is less influenced by socioeconomic status, more research is needed on underlying differences in tumor biology and drug processing.”
This research was supported by a grant from the National Institutes of Health, and the study’s authors made no disclosures.
Inhibitor receives orphan designation for AML
The US Food and Drug Administration (FDA) has granted orphan drug designation to ASLAN003 as a treatment for acute myeloid leukemia (AML).
ASLAN003 is a small molecule inhibitor of the human dihydroorotate dehydrogenase (DHODH) enzyme.
This second-generation DHODH inhibitor is being developed by ASLAN Pharmaceuticals.
The company is currently conducting a phase 2 trial (NCT03451084) of ASLAN003 in patients with newly diagnosed or relapsed/refractory AML.
The goals of this trial are to determine the optimum dose of ASLAN003 as monotherapy and assess the drug’s efficacy by overall complete remission rate. ASLAN expects to report interim data from this trial in the second half of this year.
ASLAN has already completed a phase 1 trial (NCT01992367) of ASLAN003 in healthy volunteers.
Results suggested that ASLAN003 has an “excellent” pharmacokinetic profile, according to ASLAN, and the drug was considered well tolerated in the volunteers.
ASLAN003 has also demonstrated “potent” inhibition of DHODH, according to ASLAN. In fact, the company said the binding affinity of ASLAN003 to DHODH has proven to be up to 2 orders of magnitude stronger than first-generation DHODH inhibitors such as leflunomide and teriflunomide.
ASLAN also said ASLAN003 should not confer the same toxicities as first-generation DHODH inhibitors and other novel AML therapies.
For example, leflunomide and teriflunomide, which may cause significant liver toxicity, take between 3 and 4 weeks to build to therapeutic levels and 2 years to be cleared completely after treatment is stopped.
ASLAN003, on the other hand, reaches full exposure in 24 hours and has a half-life of 18 hours.
Finally, ASLAN003 has been shown to differentiate blast cells into granulocytes in AML cell lines that do not respond to all-trans retinoic acid. These results were published in Cell in 2016.
Because of this research, ASLAN believes ASLAN003 may be effective in patients who do not respond to all-trans retinoic acid.
About orphan designation
The FDA grants orphan designation to products intended to treat, diagnose, or prevent diseases/disorders that affect fewer than 200,000 people in the US.
The designation provides incentives for sponsors to develop products for rare diseases. This may include tax credits toward the cost of clinical trials, prescription drug user fee waivers, and 7 years of market exclusivity if the product is approved.
The US Food and Drug Administration (FDA) has granted orphan drug designation to ASLAN003 as a treatment for acute myeloid leukemia (AML).
ASLAN003 is a small molecule inhibitor of the human dihydroorotate dehydrogenase (DHODH) enzyme.
This second-generation DHODH inhibitor is being developed by ASLAN Pharmaceuticals.
The company is currently conducting a phase 2 trial (NCT03451084) of ASLAN003 in patients with newly diagnosed or relapsed/refractory AML.
The goals of this trial are to determine the optimum dose of ASLAN003 as monotherapy and assess the drug’s efficacy by overall complete remission rate. ASLAN expects to report interim data from this trial in the second half of this year.
ASLAN has already completed a phase 1 trial (NCT01992367) of ASLAN003 in healthy volunteers.
Results suggested that ASLAN003 has an “excellent” pharmacokinetic profile, according to ASLAN, and the drug was considered well tolerated in the volunteers.
ASLAN003 has also demonstrated “potent” inhibition of DHODH, according to ASLAN. In fact, the company said the binding affinity of ASLAN003 to DHODH has proven to be up to 2 orders of magnitude stronger than first-generation DHODH inhibitors such as leflunomide and teriflunomide.
ASLAN also said ASLAN003 should not confer the same toxicities as first-generation DHODH inhibitors and other novel AML therapies.
For example, leflunomide and teriflunomide, which may cause significant liver toxicity, take between 3 and 4 weeks to build to therapeutic levels and 2 years to be cleared completely after treatment is stopped.
ASLAN003, on the other hand, reaches full exposure in 24 hours and has a half-life of 18 hours.
Finally, ASLAN003 has been shown to differentiate blast cells into granulocytes in AML cell lines that do not respond to all-trans retinoic acid. These results were published in Cell in 2016.
Because of this research, ASLAN believes ASLAN003 may be effective in patients who do not respond to all-trans retinoic acid.
About orphan designation
The FDA grants orphan designation to products intended to treat, diagnose, or prevent diseases/disorders that affect fewer than 200,000 people in the US.
The designation provides incentives for sponsors to develop products for rare diseases. This may include tax credits toward the cost of clinical trials, prescription drug user fee waivers, and 7 years of market exclusivity if the product is approved.
The US Food and Drug Administration (FDA) has granted orphan drug designation to ASLAN003 as a treatment for acute myeloid leukemia (AML).
ASLAN003 is a small molecule inhibitor of the human dihydroorotate dehydrogenase (DHODH) enzyme.
This second-generation DHODH inhibitor is being developed by ASLAN Pharmaceuticals.
The company is currently conducting a phase 2 trial (NCT03451084) of ASLAN003 in patients with newly diagnosed or relapsed/refractory AML.
The goals of this trial are to determine the optimum dose of ASLAN003 as monotherapy and assess the drug’s efficacy by overall complete remission rate. ASLAN expects to report interim data from this trial in the second half of this year.
ASLAN has already completed a phase 1 trial (NCT01992367) of ASLAN003 in healthy volunteers.
Results suggested that ASLAN003 has an “excellent” pharmacokinetic profile, according to ASLAN, and the drug was considered well tolerated in the volunteers.
ASLAN003 has also demonstrated “potent” inhibition of DHODH, according to ASLAN. In fact, the company said the binding affinity of ASLAN003 to DHODH has proven to be up to 2 orders of magnitude stronger than first-generation DHODH inhibitors such as leflunomide and teriflunomide.
ASLAN also said ASLAN003 should not confer the same toxicities as first-generation DHODH inhibitors and other novel AML therapies.
For example, leflunomide and teriflunomide, which may cause significant liver toxicity, take between 3 and 4 weeks to build to therapeutic levels and 2 years to be cleared completely after treatment is stopped.
ASLAN003, on the other hand, reaches full exposure in 24 hours and has a half-life of 18 hours.
Finally, ASLAN003 has been shown to differentiate blast cells into granulocytes in AML cell lines that do not respond to all-trans retinoic acid. These results were published in Cell in 2016.
Because of this research, ASLAN believes ASLAN003 may be effective in patients who do not respond to all-trans retinoic acid.
About orphan designation
The FDA grants orphan designation to products intended to treat, diagnose, or prevent diseases/disorders that affect fewer than 200,000 people in the US.
The designation provides incentives for sponsors to develop products for rare diseases. This may include tax credits toward the cost of clinical trials, prescription drug user fee waivers, and 7 years of market exclusivity if the product is approved.
FDA puts partial hold on trial of vascular agent for AML, MDS
The Food and Drug Administration has placed a partial clinical hold on a phase 1b/2 study of OXi4503, a vascular disrupting agent.
In this trial (NCT02576301), researchers are evaluating OXi4503 alone and in combination with cytarabine in patients with relapsed/refractory acute myeloid leukemia (AML) and myelodysplastic syndromes (MDS).
The partial clinical hold applies to the 12.2 mg/m2 dose of OXi4503. The FDA is allowing the continued treatment and enrollment of patients using a dose of 9.76 mg/m2. Additional data on patients receiving OXi4503 at 9.76 mg/m2 must be evaluated before dosing at 12.2 mg/m2 can be resumed.
The partial clinical hold is a result of two potential dose-limiting toxicities (DLTs) observed at the 12.2-mg/m2 dose level: hypotension, which occurred shortly after initial treatment with OXi4503, and acute hypoxic respiratory failure, which occurred approximately 2 weeks after receiving OXi4503 and cytarabine.
Both events were deemed “possibly related” to OXi4503, and both patients recovered following treatment.
“Although it is disappointing that we are not currently continuing with the higher dose of OXi4503, we look forward to gathering more safety and efficacy data at the previous dose level, where we observed 2 complete remissions in the 4 patients that we treated,” William D. Schwieterman, MD, chief executive officer of Mateon Therapeutics Inc., the company developing OXi4503, said in a statement.
In preclinical research, OXi4503 demonstrated activity against AML, both when given alone and in combination with bevacizumab. These results were published in Blood in 2010.
In a phase 1 trial (NCT01085656), researchers evaluated OXi4503 in patients with relapsed or refractory AML or MDS. OXi4503 demonstrated preliminary evidence of disease response in heavily pretreated, refractory AML and advanced MDS.
The maximum tolerated dose of OXi4503 was not identified, but adverse events attributable to the drug included hypertension, bone pain, fever, anemia, thrombocytopenia, and coagulopathies.
Results from this study were presented at the 2013 annual meeting of the American Society of Hematology.
In 2015, Mateon Therapeutics initiated the phase 1b/2 study of OXi4503 (NCT02576301) that is now on partial clinical hold.
The phase 1 portion of this study was designed to assess the safety, pharmacokinetics, pharmacodynamics, and preliminary efficacy of single-agent OXi4503 in patients with relapsed/refractory AML and MDS. It is also aimed at determining the safety, pharmacokinetics, and pharmacodynamics of OXi4503 plus intermediate-dose cytarabine.
The goal of the phase 2 portion is to assess the preliminary efficacy of OXi4503 and cytarabine in patients with AML and MDS.
The Food and Drug Administration has placed a partial clinical hold on a phase 1b/2 study of OXi4503, a vascular disrupting agent.
In this trial (NCT02576301), researchers are evaluating OXi4503 alone and in combination with cytarabine in patients with relapsed/refractory acute myeloid leukemia (AML) and myelodysplastic syndromes (MDS).
The partial clinical hold applies to the 12.2 mg/m2 dose of OXi4503. The FDA is allowing the continued treatment and enrollment of patients using a dose of 9.76 mg/m2. Additional data on patients receiving OXi4503 at 9.76 mg/m2 must be evaluated before dosing at 12.2 mg/m2 can be resumed.
The partial clinical hold is a result of two potential dose-limiting toxicities (DLTs) observed at the 12.2-mg/m2 dose level: hypotension, which occurred shortly after initial treatment with OXi4503, and acute hypoxic respiratory failure, which occurred approximately 2 weeks after receiving OXi4503 and cytarabine.
Both events were deemed “possibly related” to OXi4503, and both patients recovered following treatment.
“Although it is disappointing that we are not currently continuing with the higher dose of OXi4503, we look forward to gathering more safety and efficacy data at the previous dose level, where we observed 2 complete remissions in the 4 patients that we treated,” William D. Schwieterman, MD, chief executive officer of Mateon Therapeutics Inc., the company developing OXi4503, said in a statement.
In preclinical research, OXi4503 demonstrated activity against AML, both when given alone and in combination with bevacizumab. These results were published in Blood in 2010.
In a phase 1 trial (NCT01085656), researchers evaluated OXi4503 in patients with relapsed or refractory AML or MDS. OXi4503 demonstrated preliminary evidence of disease response in heavily pretreated, refractory AML and advanced MDS.
The maximum tolerated dose of OXi4503 was not identified, but adverse events attributable to the drug included hypertension, bone pain, fever, anemia, thrombocytopenia, and coagulopathies.
Results from this study were presented at the 2013 annual meeting of the American Society of Hematology.
In 2015, Mateon Therapeutics initiated the phase 1b/2 study of OXi4503 (NCT02576301) that is now on partial clinical hold.
The phase 1 portion of this study was designed to assess the safety, pharmacokinetics, pharmacodynamics, and preliminary efficacy of single-agent OXi4503 in patients with relapsed/refractory AML and MDS. It is also aimed at determining the safety, pharmacokinetics, and pharmacodynamics of OXi4503 plus intermediate-dose cytarabine.
The goal of the phase 2 portion is to assess the preliminary efficacy of OXi4503 and cytarabine in patients with AML and MDS.
The Food and Drug Administration has placed a partial clinical hold on a phase 1b/2 study of OXi4503, a vascular disrupting agent.
In this trial (NCT02576301), researchers are evaluating OXi4503 alone and in combination with cytarabine in patients with relapsed/refractory acute myeloid leukemia (AML) and myelodysplastic syndromes (MDS).
The partial clinical hold applies to the 12.2 mg/m2 dose of OXi4503. The FDA is allowing the continued treatment and enrollment of patients using a dose of 9.76 mg/m2. Additional data on patients receiving OXi4503 at 9.76 mg/m2 must be evaluated before dosing at 12.2 mg/m2 can be resumed.
The partial clinical hold is a result of two potential dose-limiting toxicities (DLTs) observed at the 12.2-mg/m2 dose level: hypotension, which occurred shortly after initial treatment with OXi4503, and acute hypoxic respiratory failure, which occurred approximately 2 weeks after receiving OXi4503 and cytarabine.
Both events were deemed “possibly related” to OXi4503, and both patients recovered following treatment.
“Although it is disappointing that we are not currently continuing with the higher dose of OXi4503, we look forward to gathering more safety and efficacy data at the previous dose level, where we observed 2 complete remissions in the 4 patients that we treated,” William D. Schwieterman, MD, chief executive officer of Mateon Therapeutics Inc., the company developing OXi4503, said in a statement.
In preclinical research, OXi4503 demonstrated activity against AML, both when given alone and in combination with bevacizumab. These results were published in Blood in 2010.
In a phase 1 trial (NCT01085656), researchers evaluated OXi4503 in patients with relapsed or refractory AML or MDS. OXi4503 demonstrated preliminary evidence of disease response in heavily pretreated, refractory AML and advanced MDS.
The maximum tolerated dose of OXi4503 was not identified, but adverse events attributable to the drug included hypertension, bone pain, fever, anemia, thrombocytopenia, and coagulopathies.
Results from this study were presented at the 2013 annual meeting of the American Society of Hematology.
In 2015, Mateon Therapeutics initiated the phase 1b/2 study of OXi4503 (NCT02576301) that is now on partial clinical hold.
The phase 1 portion of this study was designed to assess the safety, pharmacokinetics, pharmacodynamics, and preliminary efficacy of single-agent OXi4503 in patients with relapsed/refractory AML and MDS. It is also aimed at determining the safety, pharmacokinetics, and pharmacodynamics of OXi4503 plus intermediate-dose cytarabine.
The goal of the phase 2 portion is to assess the preliminary efficacy of OXi4503 and cytarabine in patients with AML and MDS.
Access to care drives disparity between urban, rural cancer patients
New research suggests that better access to quality care may reduce disparities in survival between cancer patients living in rural areas of the US and those living in urban areas.
The study showed that urban and rural cancer patients had similar survival outcomes when they were enrolled in clinical trials.
These results, published in JAMA Network Open, cast new light on decades of research showing that cancer patients living in rural areas don’t live as long as urban cancer patients.
“These findings were a surprise, since we thought we might find the same disparities others had found,” said study author Joseph Unger, PhD, of Fred Hutchinson Cancer Research Center in Seattle, Washington.
“But clinical trials are a key difference here. In trials, patients are uniformly assessed, treated, and followed under a strict, guideline-driven protocol. This suggests that giving people with cancer access to uniform treatment strategies could help resolve the disparities in outcomes that we see between rural and urban patients.”
Dr Unger and his colleagues studied data on 36,995 patients who were enrolled in 44 phase 3 or phase 2/3 SWOG trials from 1986 through 2012. All 50 states were represented.
Patients had 17 different cancer types, including acute myeloid leukemia (AML), non-Hodgkin lymphoma (NHL), and multiple myeloma (MM).
Using US Department of Agriculture population classifications known as Rural-Urban Continuum Codes, the researchers categorized the patients as either rural or urban and analyzed their outcomes.
A minority of patients (19.4%, n=7184) were from rural locations. They were significantly more likely than urban patients to be 65 or older (P<0.001) and significantly less likely to be black (vs all other races; P<0.001).
However, there was no significant between-group difference in sex (P=0.53), and all major US geographic regions (West, Midwest, South, and Northeast) were represented.
Results
The researchers limited their analysis of survival to the first 5 years after trial enrollment to emphasize outcomes related to cancer and its treatment. They looked at overall survival (OS) as well as cancer-specific survival.
The team found no meaningful difference in OS or cancer-specific survival between rural and urban patients for 16 of the 17 cancer types.
The exception was estrogen receptor-negative, progesterone receptor-negative breast cancer. Rural patients with this cancer didn’t live as long as their urban counterparts. The hazard ratio (HR) was 1.27 (95% CI, 1.06-1.51; P=0.008) for OS and 1.26 (95% CI, 1.04-1.52; P=0.02) for cancer-specific survival.
The researchers believe this finding could be attributed to a few factors, including timely access to follow-up chemotherapy after patients’ first round of cancer treatment.
Although there were no significant survival differences for patients with hematologic malignancies, rural patients had slightly better OS if they had advanced indolent NHL or AML but slightly worse OS if they had MM or advanced aggressive NHL. The HRs were as follows:
- Advanced indolent NHL—HR=0.91 (95% CI, 0.64-1.29; P=0.60)
- AML—HR=0.94 (95% CI, 0.83-1.06; P=0.29)
- MM—HR=1.05 (95% CI, 0.93-1.18, P=0.46)
- Advanced aggressive NHL—HR=1.05 (95% CI, 0.87-1.27; P=0.60).
Rural patients had slightly better cancer-specific survival if they had advanced indolent NHL but slightly worse cancer-specific survival if they had AML, MM, or advanced aggressive NHL. The HRs were as follows:
- Advanced indolent NHL—HR=0.98 (95% CI, 0.66-1.45; P=0.90)
- AML—HR=1.01 (95% CI, 0.86-1.20; P=0.87)
- MM—HR=1.04 (95% CI, 0.90-1.20; P=0.60)
- Advanced aggressive NHL—HR=1.08 (95% CI, 0.87-1.34; P=0.50).
The researchers said these findings suggest it is access to care, and not other characteristics, that drive the survival disparities typically observed between urban and rural cancer patients.
“If people diagnosed with cancer, regardless of where they live, receive similar care and have similar outcomes, then a reasonable inference is that the best way to improve outcomes for rural patients is to improve their access to quality care,” Dr Unger said.
This research was supported by the National Cancer Institute and the HOPE Foundation. The researchers reported financial relationships with various pharmaceutical companies.
New research suggests that better access to quality care may reduce disparities in survival between cancer patients living in rural areas of the US and those living in urban areas.
The study showed that urban and rural cancer patients had similar survival outcomes when they were enrolled in clinical trials.
These results, published in JAMA Network Open, cast new light on decades of research showing that cancer patients living in rural areas don’t live as long as urban cancer patients.
“These findings were a surprise, since we thought we might find the same disparities others had found,” said study author Joseph Unger, PhD, of Fred Hutchinson Cancer Research Center in Seattle, Washington.
“But clinical trials are a key difference here. In trials, patients are uniformly assessed, treated, and followed under a strict, guideline-driven protocol. This suggests that giving people with cancer access to uniform treatment strategies could help resolve the disparities in outcomes that we see between rural and urban patients.”
Dr Unger and his colleagues studied data on 36,995 patients who were enrolled in 44 phase 3 or phase 2/3 SWOG trials from 1986 through 2012. All 50 states were represented.
Patients had 17 different cancer types, including acute myeloid leukemia (AML), non-Hodgkin lymphoma (NHL), and multiple myeloma (MM).
Using US Department of Agriculture population classifications known as Rural-Urban Continuum Codes, the researchers categorized the patients as either rural or urban and analyzed their outcomes.
A minority of patients (19.4%, n=7184) were from rural locations. They were significantly more likely than urban patients to be 65 or older (P<0.001) and significantly less likely to be black (vs all other races; P<0.001).
However, there was no significant between-group difference in sex (P=0.53), and all major US geographic regions (West, Midwest, South, and Northeast) were represented.
Results
The researchers limited their analysis of survival to the first 5 years after trial enrollment to emphasize outcomes related to cancer and its treatment. They looked at overall survival (OS) as well as cancer-specific survival.
The team found no meaningful difference in OS or cancer-specific survival between rural and urban patients for 16 of the 17 cancer types.
The exception was estrogen receptor-negative, progesterone receptor-negative breast cancer. Rural patients with this cancer didn’t live as long as their urban counterparts. The hazard ratio (HR) was 1.27 (95% CI, 1.06-1.51; P=0.008) for OS and 1.26 (95% CI, 1.04-1.52; P=0.02) for cancer-specific survival.
The researchers believe this finding could be attributed to a few factors, including timely access to follow-up chemotherapy after patients’ first round of cancer treatment.
Although there were no significant survival differences for patients with hematologic malignancies, rural patients had slightly better OS if they had advanced indolent NHL or AML but slightly worse OS if they had MM or advanced aggressive NHL. The HRs were as follows:
- Advanced indolent NHL—HR=0.91 (95% CI, 0.64-1.29; P=0.60)
- AML—HR=0.94 (95% CI, 0.83-1.06; P=0.29)
- MM—HR=1.05 (95% CI, 0.93-1.18, P=0.46)
- Advanced aggressive NHL—HR=1.05 (95% CI, 0.87-1.27; P=0.60).
Rural patients had slightly better cancer-specific survival if they had advanced indolent NHL but slightly worse cancer-specific survival if they had AML, MM, or advanced aggressive NHL. The HRs were as follows:
- Advanced indolent NHL—HR=0.98 (95% CI, 0.66-1.45; P=0.90)
- AML—HR=1.01 (95% CI, 0.86-1.20; P=0.87)
- MM—HR=1.04 (95% CI, 0.90-1.20; P=0.60)
- Advanced aggressive NHL—HR=1.08 (95% CI, 0.87-1.34; P=0.50).
The researchers said these findings suggest it is access to care, and not other characteristics, that drive the survival disparities typically observed between urban and rural cancer patients.
“If people diagnosed with cancer, regardless of where they live, receive similar care and have similar outcomes, then a reasonable inference is that the best way to improve outcomes for rural patients is to improve their access to quality care,” Dr Unger said.
This research was supported by the National Cancer Institute and the HOPE Foundation. The researchers reported financial relationships with various pharmaceutical companies.
New research suggests that better access to quality care may reduce disparities in survival between cancer patients living in rural areas of the US and those living in urban areas.
The study showed that urban and rural cancer patients had similar survival outcomes when they were enrolled in clinical trials.
These results, published in JAMA Network Open, cast new light on decades of research showing that cancer patients living in rural areas don’t live as long as urban cancer patients.
“These findings were a surprise, since we thought we might find the same disparities others had found,” said study author Joseph Unger, PhD, of Fred Hutchinson Cancer Research Center in Seattle, Washington.
“But clinical trials are a key difference here. In trials, patients are uniformly assessed, treated, and followed under a strict, guideline-driven protocol. This suggests that giving people with cancer access to uniform treatment strategies could help resolve the disparities in outcomes that we see between rural and urban patients.”
Dr Unger and his colleagues studied data on 36,995 patients who were enrolled in 44 phase 3 or phase 2/3 SWOG trials from 1986 through 2012. All 50 states were represented.
Patients had 17 different cancer types, including acute myeloid leukemia (AML), non-Hodgkin lymphoma (NHL), and multiple myeloma (MM).
Using US Department of Agriculture population classifications known as Rural-Urban Continuum Codes, the researchers categorized the patients as either rural or urban and analyzed their outcomes.
A minority of patients (19.4%, n=7184) were from rural locations. They were significantly more likely than urban patients to be 65 or older (P<0.001) and significantly less likely to be black (vs all other races; P<0.001).
However, there was no significant between-group difference in sex (P=0.53), and all major US geographic regions (West, Midwest, South, and Northeast) were represented.
Results
The researchers limited their analysis of survival to the first 5 years after trial enrollment to emphasize outcomes related to cancer and its treatment. They looked at overall survival (OS) as well as cancer-specific survival.
The team found no meaningful difference in OS or cancer-specific survival between rural and urban patients for 16 of the 17 cancer types.
The exception was estrogen receptor-negative, progesterone receptor-negative breast cancer. Rural patients with this cancer didn’t live as long as their urban counterparts. The hazard ratio (HR) was 1.27 (95% CI, 1.06-1.51; P=0.008) for OS and 1.26 (95% CI, 1.04-1.52; P=0.02) for cancer-specific survival.
The researchers believe this finding could be attributed to a few factors, including timely access to follow-up chemotherapy after patients’ first round of cancer treatment.
Although there were no significant survival differences for patients with hematologic malignancies, rural patients had slightly better OS if they had advanced indolent NHL or AML but slightly worse OS if they had MM or advanced aggressive NHL. The HRs were as follows:
- Advanced indolent NHL—HR=0.91 (95% CI, 0.64-1.29; P=0.60)
- AML—HR=0.94 (95% CI, 0.83-1.06; P=0.29)
- MM—HR=1.05 (95% CI, 0.93-1.18, P=0.46)
- Advanced aggressive NHL—HR=1.05 (95% CI, 0.87-1.27; P=0.60).
Rural patients had slightly better cancer-specific survival if they had advanced indolent NHL but slightly worse cancer-specific survival if they had AML, MM, or advanced aggressive NHL. The HRs were as follows:
- Advanced indolent NHL—HR=0.98 (95% CI, 0.66-1.45; P=0.90)
- AML—HR=1.01 (95% CI, 0.86-1.20; P=0.87)
- MM—HR=1.04 (95% CI, 0.90-1.20; P=0.60)
- Advanced aggressive NHL—HR=1.08 (95% CI, 0.87-1.34; P=0.50).
The researchers said these findings suggest it is access to care, and not other characteristics, that drive the survival disparities typically observed between urban and rural cancer patients.
“If people diagnosed with cancer, regardless of where they live, receive similar care and have similar outcomes, then a reasonable inference is that the best way to improve outcomes for rural patients is to improve their access to quality care,” Dr Unger said.
This research was supported by the National Cancer Institute and the HOPE Foundation. The researchers reported financial relationships with various pharmaceutical companies.
Partial hold placed on trial of drug for AML, MDS
The US Food and Drug Administration (FDA) has placed a partial clinical hold on a phase 1b/2 study of OXi4503, a vascular disrupting agent.
In this trial (NCT02576301), researchers are evaluating OXi4503, alone and in combination with cytarabine, in patients with relapsed/refractory acute myeloid leukemia (AML) and myelodysplastic syndromes (MDS).
The partial clinical hold applies to the 12.2 mg/m2 dose of OXi4503.
The FDA is allowing the continued treatment and enrollment of patients using a dose of 9.76 mg/m2.
The agency said additional data on patients receiving OXi4503 at 9.76 mg/m2 must be evaluated before dosing at 12.2 mg/m2 can be resumed.
The partial clinical hold is a result of 2 potential dose-limiting toxicities (DLTs) observed at the 12.2 mg/m2 dose level.
One DLT was hypotension, which occurred shortly after initial treatment with OXi4503. The other DLT was acute hypoxic respiratory failure, which occurred approximately 2 weeks after receiving OXi4503 and cytarabine.
Both events were deemed “possibly related” to OXi4503, and both patients recovered following treatment.
The study protocol generally defines a DLT as any grade 3 serious adverse event where a relationship to OXi4503 cannot be ruled out.
“Although it is disappointing that we are not currently continuing with the higher dose of OXi4503, we look forward to gathering more safety and efficacy data at the previous dose level, where we observed 2 complete remissions in the 4 patients that we treated,” said William D. Schwieterman, MD, chief executive officer of Mateon Therapeutics, Inc., the company developing OXi4503.
About OXi4503
According to Mateon Therapeutics, OXi4503 has a dual mechanism of action that disrupts the shape of tumor bone marrow endothelial cells through reversible binding to tubulin at the colchicine binding site, downregulating intercellular adhesion molecules.
This alters the endothelial cell shape, releasing quiescent adherent tumor cells from bone marrow endothelial cells and activating the cell cycle, which makes the tumor cells vulnerable to chemotherapy.
OXi4503 also kills tumor cells directly via myeloperoxidase activation of an orthoquinone cytotoxic mediator.
In preclinical research, OXi4503 demonstrated activity against AML, both when given alone and in combination with bevacizumab. These results were published in Blood in 2010.
Clinical trials
In a phase 1 trial (NCT01085656), researchers evaluated OXi4503 in patients with relapsed or refractory AML or MDS. The goals were to determine the safety profile, maximum tolerated dose, and biologic activity of OXi4503.
The researchers said OXi4503 demonstrated preliminary evidence of disease response in heavily pre-treated, refractory AML and advanced MDS.
The maximum tolerated dose of OXi4503 was not identified, but adverse events attributable to the drug included hypertension, bone pain, fever, anemia, thrombocytopenia, and coagulopathies.
Results from this study were presented at the 2013 ASH Annual Meeting.
In 2015, Mateon Therapeutics initiated the phase 1b/2 study of OXi4503 (NCT02576301) that is now on partial clinical hold.
The phase 1 portion of this study was designed to assess the safety, pharmacokinetics, pharmacodynamics, and preliminary efficacy of single-agent OXi4503 in patients with relapsed/refractory AML and MDS.
The phase 1 portion was also intended to determine the safety, pharmacokinetics, and pharmacodynamics of OXi4503 plus intermediate-dose cytarabine.
The goal of the phase 2 portion is to assess the preliminary efficacy of OXi4503 and cytarabine in patients with AML and MDS.
The US Food and Drug Administration (FDA) has placed a partial clinical hold on a phase 1b/2 study of OXi4503, a vascular disrupting agent.
In this trial (NCT02576301), researchers are evaluating OXi4503, alone and in combination with cytarabine, in patients with relapsed/refractory acute myeloid leukemia (AML) and myelodysplastic syndromes (MDS).
The partial clinical hold applies to the 12.2 mg/m2 dose of OXi4503.
The FDA is allowing the continued treatment and enrollment of patients using a dose of 9.76 mg/m2.
The agency said additional data on patients receiving OXi4503 at 9.76 mg/m2 must be evaluated before dosing at 12.2 mg/m2 can be resumed.
The partial clinical hold is a result of 2 potential dose-limiting toxicities (DLTs) observed at the 12.2 mg/m2 dose level.
One DLT was hypotension, which occurred shortly after initial treatment with OXi4503. The other DLT was acute hypoxic respiratory failure, which occurred approximately 2 weeks after receiving OXi4503 and cytarabine.
Both events were deemed “possibly related” to OXi4503, and both patients recovered following treatment.
The study protocol generally defines a DLT as any grade 3 serious adverse event where a relationship to OXi4503 cannot be ruled out.
“Although it is disappointing that we are not currently continuing with the higher dose of OXi4503, we look forward to gathering more safety and efficacy data at the previous dose level, where we observed 2 complete remissions in the 4 patients that we treated,” said William D. Schwieterman, MD, chief executive officer of Mateon Therapeutics, Inc., the company developing OXi4503.
About OXi4503
According to Mateon Therapeutics, OXi4503 has a dual mechanism of action that disrupts the shape of tumor bone marrow endothelial cells through reversible binding to tubulin at the colchicine binding site, downregulating intercellular adhesion molecules.
This alters the endothelial cell shape, releasing quiescent adherent tumor cells from bone marrow endothelial cells and activating the cell cycle, which makes the tumor cells vulnerable to chemotherapy.
OXi4503 also kills tumor cells directly via myeloperoxidase activation of an orthoquinone cytotoxic mediator.
In preclinical research, OXi4503 demonstrated activity against AML, both when given alone and in combination with bevacizumab. These results were published in Blood in 2010.
Clinical trials
In a phase 1 trial (NCT01085656), researchers evaluated OXi4503 in patients with relapsed or refractory AML or MDS. The goals were to determine the safety profile, maximum tolerated dose, and biologic activity of OXi4503.
The researchers said OXi4503 demonstrated preliminary evidence of disease response in heavily pre-treated, refractory AML and advanced MDS.
The maximum tolerated dose of OXi4503 was not identified, but adverse events attributable to the drug included hypertension, bone pain, fever, anemia, thrombocytopenia, and coagulopathies.
Results from this study were presented at the 2013 ASH Annual Meeting.
In 2015, Mateon Therapeutics initiated the phase 1b/2 study of OXi4503 (NCT02576301) that is now on partial clinical hold.
The phase 1 portion of this study was designed to assess the safety, pharmacokinetics, pharmacodynamics, and preliminary efficacy of single-agent OXi4503 in patients with relapsed/refractory AML and MDS.
The phase 1 portion was also intended to determine the safety, pharmacokinetics, and pharmacodynamics of OXi4503 plus intermediate-dose cytarabine.
The goal of the phase 2 portion is to assess the preliminary efficacy of OXi4503 and cytarabine in patients with AML and MDS.
The US Food and Drug Administration (FDA) has placed a partial clinical hold on a phase 1b/2 study of OXi4503, a vascular disrupting agent.
In this trial (NCT02576301), researchers are evaluating OXi4503, alone and in combination with cytarabine, in patients with relapsed/refractory acute myeloid leukemia (AML) and myelodysplastic syndromes (MDS).
The partial clinical hold applies to the 12.2 mg/m2 dose of OXi4503.
The FDA is allowing the continued treatment and enrollment of patients using a dose of 9.76 mg/m2.
The agency said additional data on patients receiving OXi4503 at 9.76 mg/m2 must be evaluated before dosing at 12.2 mg/m2 can be resumed.
The partial clinical hold is a result of 2 potential dose-limiting toxicities (DLTs) observed at the 12.2 mg/m2 dose level.
One DLT was hypotension, which occurred shortly after initial treatment with OXi4503. The other DLT was acute hypoxic respiratory failure, which occurred approximately 2 weeks after receiving OXi4503 and cytarabine.
Both events were deemed “possibly related” to OXi4503, and both patients recovered following treatment.
The study protocol generally defines a DLT as any grade 3 serious adverse event where a relationship to OXi4503 cannot be ruled out.
“Although it is disappointing that we are not currently continuing with the higher dose of OXi4503, we look forward to gathering more safety and efficacy data at the previous dose level, where we observed 2 complete remissions in the 4 patients that we treated,” said William D. Schwieterman, MD, chief executive officer of Mateon Therapeutics, Inc., the company developing OXi4503.
About OXi4503
According to Mateon Therapeutics, OXi4503 has a dual mechanism of action that disrupts the shape of tumor bone marrow endothelial cells through reversible binding to tubulin at the colchicine binding site, downregulating intercellular adhesion molecules.
This alters the endothelial cell shape, releasing quiescent adherent tumor cells from bone marrow endothelial cells and activating the cell cycle, which makes the tumor cells vulnerable to chemotherapy.
OXi4503 also kills tumor cells directly via myeloperoxidase activation of an orthoquinone cytotoxic mediator.
In preclinical research, OXi4503 demonstrated activity against AML, both when given alone and in combination with bevacizumab. These results were published in Blood in 2010.
Clinical trials
In a phase 1 trial (NCT01085656), researchers evaluated OXi4503 in patients with relapsed or refractory AML or MDS. The goals were to determine the safety profile, maximum tolerated dose, and biologic activity of OXi4503.
The researchers said OXi4503 demonstrated preliminary evidence of disease response in heavily pre-treated, refractory AML and advanced MDS.
The maximum tolerated dose of OXi4503 was not identified, but adverse events attributable to the drug included hypertension, bone pain, fever, anemia, thrombocytopenia, and coagulopathies.
Results from this study were presented at the 2013 ASH Annual Meeting.
In 2015, Mateon Therapeutics initiated the phase 1b/2 study of OXi4503 (NCT02576301) that is now on partial clinical hold.
The phase 1 portion of this study was designed to assess the safety, pharmacokinetics, pharmacodynamics, and preliminary efficacy of single-agent OXi4503 in patients with relapsed/refractory AML and MDS.
The phase 1 portion was also intended to determine the safety, pharmacokinetics, and pharmacodynamics of OXi4503 plus intermediate-dose cytarabine.
The goal of the phase 2 portion is to assess the preliminary efficacy of OXi4503 and cytarabine in patients with AML and MDS.
First CAR T-cell therapy approvals bolster booming immunotherapy market
There were a number of landmark approvals by the US Food and Drug Administration (FDA) in 2017 for cancer therapies, among them, the approval of the first two chimeric antigen receptor (CAR) T-cell therapies for cancer: tisagenlecleucel (in August) and axicabtagene ciloluecel (in October).1 CAR T-cells are a type of adoptive cell therapy or immunotherapy, in which the patient’s own immune cells are genetically engineered to target a tumor-associated antigen, in this case CD19. In tisagenlecleucel, CD19 proteins on B cells are targeted in the treatment of B-cell precursor acute lymphoblastic leukemia. Axicabtagene ciloluecel, the second anti-CD19 CAR T-cell therapy, was approved for the treatment of refractory, aggressive B-cell non-Hodgkin lymphoma.
Tisagenlecleucel
Tisagenlecleucel was approved for the treatment of pediatric patients up to 25 years of age with B-cell precursor acute lymphoblastic leukemia (ALL) whose disease is refractory to treatment or who have relapsed after second-line therapy or beyond.2 Approval was based on the pivotal ELIANA trial, a single-arm, global phase 2 trial conducted at 25 centers worldwide during April 2015 through April 2017. Patients were eligible for enrollment if they had relapsed or refractory B-cell ALL and were at least 3 years of age at screening and no older than 21 years of age at diagnosis, had at least 5% lymphoblasts in the bone marrow at screening, had tumor expression of CD19, had adequate organ function, and a Karnofsky (adult) or Lansky (child) Performance Status of ≥50 (with the worst allowable score, 50, indicating a patient who requires considerable assistance and frequent medical care [Karnofsky] and lying around much of the day, but gets dressed; no active playing but participates in all quiet play and activities [Lansky]). Exclusion criteria included previous receipt of anti-CD19 therapy, concomitant genetic syndromes associated with bone marrow failure, previous malignancy, and/or active or latent hepatitis B or C virus (HBV/HCV) infection.
The overall remission rate (ORR) was evaluated in 75 patients who were given a single dose of tisagenlecleucel (a median weight-adjusted dose of 3.1 x 106 transduced viable T cells per kg of body weight) within 14 days of completing a lymphodepleting chemotherapy regimen. The confirmed ORR after at least 3 months of follow-up, as assessed by independent central review, was 81%, which included 60% of patients in complete remission (CR) and 21% in complete remission with incomplete hematologic recovery, all of whom were negative for minimal residual disease.
The most common adverse events (AEs) associated with tisagenlecleucel treatment were cytokine release syndrome (CRS), hypogammaglobulinemia, infection, pyrexia, decreased appetite, headache, encephalopathy, hypotension, bleeding episodes, tachycardia, nausea, diarrhea, vomiting, viral infectious disorders, hypoxia, fatigue, acute kidney injury, and delirium. AEs were of grade 3/4 severity in 84% of patients.3
To combat serious safety issues, including CRS and neurologic toxicities, the FDA approved tisagenlecleucel with a Risk Evaluation and Mitigation Strategy (REMS) that, in part, requires health care providers who administer the drug to be trained in their management. It also requires the facility where treatment is administered to have immediate, onsite access to the drug tocilizumab, which was approved in conjunction with tisagenlecleucel for the treatment of patients who experience CRS.
In addition to information about the REMS, the prescribing information details warnings and precautions relating to several other common toxicities. These include hypersensitivity reactions, serious infections, prolonged cytopenias, and hypogammaglobulinemia.
Patients should be monitored for signs and symptoms of infection and treated appropriately. Viral reactivation can occur after tisagenlecleucel treatment, so patients should be screened for HBV, HCV, and human immunodeficiency virus before collection of cells.
The administration of myeloid growth factors is not recommended during the first 3 weeks after infusion or until CRS has resolved. Immunoglobulin levels should be monitored after treatment and hypogammaglobulinemia managed using infection precautions, antibiotic prophylaxis, and immunoglobulin replacement according to standard guidelines.
Patients treated with tisagenlecleucel should also be monitored for life for secondary malignancies, should not be treated with live vaccines from 2 weeks before the start of lymphodepleting chemotherapy until immune recovery after tisagenlecleucel infusion, and should be aware of the potential for neurological events to impact their ability to drive and use dangerous machinery.4
Tisagenlecleucel is marketed as Kymriah by Novartis Pharmaceuticals. The recommended dose is 1 infusion of 0.2-5 x 106 CAR-positive viable T cells per kilogram of body weight intravenously (for patients ≤50kg) and 0.1-2.5 x 108 cells/kg (for patients >50kg), administered 2-14 days after lymphodepleting chemotherapy.
Axicabtagene ciloleucel
Axicabtagene ciloleucel was approved for the treatment of adult patients with certain types of relapsed or refractory large B-cell lymphoma, including diffuse large B-cell lymphoma (DLBCL), primary mediastinal B-cell lymphoma (PMBCL), high-grade B-cell lymphoma, and DLBCL arising from follicular lymphoma.5 It is not indicated for the treatment of patients with primary central nervous system lymphoma.
Approval followed positive results from the phase 2 single-arm, multicenter ZUMA-1 trial.6 Patients were included if they were aged 18 years of age and older, had histologically confirmed aggressive B-cell non-Hodgkin lymphoma that was chemotherapy refractory, had received adequate previous therapy, had at least 1 measurable lesion, had completed radiation or systemic therapy at least 2 weeks before, had resolved toxicities related to previous therapy, and had an Eastern Cooperative Oncology Group Performance Status of 0 (asymptomatic) or 1 (symptomatic), an absolute neutrophil count of ≥1000/µL, a platelet count of ≥50,000/µL, and adequate hepatic, renal and cardiac function. They were treated with a single infusion of axicabtagene ciloleucel after lymphodepleting chemotherapy.
Patients who had received previous CD19-targeted therapy, who had concomitant genetic syndromes associated with bone marrow failure, who had previous malignancy, and who had active or latent HBV/HCV infection were among those excluded from the study.
Patients were enrolled in 2 cohorts; those with DLBCL (n = 77) and those with PMBCL or transformed follicular lymphoma (n = 24). The primary endpoint was objective response rate, and after a primary analysis at a minimum of 6 months follow-up, the objective response rate was 82%, with a CR rate of 52%. Among patients who achieved CR, the median duration of response was not reached after a median follow-up of 7.9 months.
A subsequent updated analysis was performed when 108 patients had been followed for a minimum of 1 year. The objective response rate was 82%, and the CR rate was 58%, with some patients having CR in the absence of additional therapies as late as 15 months after treatment. At this updated analysis, 42% of patients continued to have a response, 40% of whom remained in CR.
The most common grade 3 or higher AEs included febrile neutropenia, fever, CRS, encephalopathy, infections, hypotension, and hypoxia. Serious AEs occurred in 52% of patients and included CRS, neurologic toxicity, prolonged cytopenias, and serious infections. Grade 3 or higher CRS or neurologic toxicities occurred in 13% and 28% of patients, respectively. Three patients died during treatment.
To mitigate the risk of CRS and neurologic toxicity, axicabtagene ciloleucel is approved with an REMS that requires appropriate certification and training before hospitals are cleared to administer the therapy.
Other warnings and precautions in the prescribing information relate to serious infections (monitor for signs and symptoms and treat appropriately), prolonged cytopenias (monitor blood counts), hypogammaglobulinemia (monitor immunoglobulin levels and manage appropriately), secondary malignancies (life-long monitoring), and the potential effects of neurologic events on a patient’s ability to drive and operate dangerous machinery (avoid for at least 8 weeks after infusion).7
Axicabtagene ciloleucel is marketed as Yescarta by Kite Pharma Inc. The recommended dose is a single intravenous infusion with a target of 2 x 106 CAR-positive viable T cells per kilogram of body weight, preceded by fludarabine and cyclophosphamide lymphodepleting chemotherapy.
1. Bosserman LD. Cancer care in 2017: the promise of more cures with the challenges of an unstable health care system. JCSO 2017;15(6):e283-e290.
2. FDA approves tisagenlecleucel for B-cell ALL and tocilizumab for cytokine release syndrome. FDA News Release. August 30, 2017. https://www.fda.gov/Drugs/InformationOnDrugs/ApprovedDrugs/
ucm574154.htm. Accessed March 31, 2018.
3. Maude S.L, Laetsch T.W, Buechner S, et al. Tisagenlecleucel in children and young adults with B-Cell lymphoblastic leukemia. N Engl J Med. 2018;378:439-48.
4. Kymriah (tisagenlecleucel) suspension for intravenous use. Prescribing information. Novartis Pharmaceuticals Corporation, August, 2017. https://www.pharma.us.novartis.com/sites/www.pharma.us.novartis.
com/files/kymriah.pdf. Accessed March 31, 2018.
5. FDA approves axicabtagene ciloleucel for large B-cell lymphoma. FDA News Release. October 18, 2017. https://www.fda.gov/Drugs/
InformationOnDrugs/ApprovedDrugs/ucm581296.htm. Accessed March 31, 2018.
6. Neelapu, S.S, Locke F.L, Bartlett, L.J, et al. Axicabtagene Ciloleucel CAR T-Cell Therapy in Refractory Large B-Cell Lymphoma. N Engl J Med. 2017;377:2531-44.
7. Kymriah (tisagenlecleucel) suspension for intravenous use. Prescribing information. Kite Pharma Inc. October 2017. https://www.yescarta.com/wp-content/uploads/yescarta-pi.pdf. Accessed March 31, 2018.
There were a number of landmark approvals by the US Food and Drug Administration (FDA) in 2017 for cancer therapies, among them, the approval of the first two chimeric antigen receptor (CAR) T-cell therapies for cancer: tisagenlecleucel (in August) and axicabtagene ciloluecel (in October).1 CAR T-cells are a type of adoptive cell therapy or immunotherapy, in which the patient’s own immune cells are genetically engineered to target a tumor-associated antigen, in this case CD19. In tisagenlecleucel, CD19 proteins on B cells are targeted in the treatment of B-cell precursor acute lymphoblastic leukemia. Axicabtagene ciloluecel, the second anti-CD19 CAR T-cell therapy, was approved for the treatment of refractory, aggressive B-cell non-Hodgkin lymphoma.
Tisagenlecleucel
Tisagenlecleucel was approved for the treatment of pediatric patients up to 25 years of age with B-cell precursor acute lymphoblastic leukemia (ALL) whose disease is refractory to treatment or who have relapsed after second-line therapy or beyond.2 Approval was based on the pivotal ELIANA trial, a single-arm, global phase 2 trial conducted at 25 centers worldwide during April 2015 through April 2017. Patients were eligible for enrollment if they had relapsed or refractory B-cell ALL and were at least 3 years of age at screening and no older than 21 years of age at diagnosis, had at least 5% lymphoblasts in the bone marrow at screening, had tumor expression of CD19, had adequate organ function, and a Karnofsky (adult) or Lansky (child) Performance Status of ≥50 (with the worst allowable score, 50, indicating a patient who requires considerable assistance and frequent medical care [Karnofsky] and lying around much of the day, but gets dressed; no active playing but participates in all quiet play and activities [Lansky]). Exclusion criteria included previous receipt of anti-CD19 therapy, concomitant genetic syndromes associated with bone marrow failure, previous malignancy, and/or active or latent hepatitis B or C virus (HBV/HCV) infection.
The overall remission rate (ORR) was evaluated in 75 patients who were given a single dose of tisagenlecleucel (a median weight-adjusted dose of 3.1 x 106 transduced viable T cells per kg of body weight) within 14 days of completing a lymphodepleting chemotherapy regimen. The confirmed ORR after at least 3 months of follow-up, as assessed by independent central review, was 81%, which included 60% of patients in complete remission (CR) and 21% in complete remission with incomplete hematologic recovery, all of whom were negative for minimal residual disease.
The most common adverse events (AEs) associated with tisagenlecleucel treatment were cytokine release syndrome (CRS), hypogammaglobulinemia, infection, pyrexia, decreased appetite, headache, encephalopathy, hypotension, bleeding episodes, tachycardia, nausea, diarrhea, vomiting, viral infectious disorders, hypoxia, fatigue, acute kidney injury, and delirium. AEs were of grade 3/4 severity in 84% of patients.3
To combat serious safety issues, including CRS and neurologic toxicities, the FDA approved tisagenlecleucel with a Risk Evaluation and Mitigation Strategy (REMS) that, in part, requires health care providers who administer the drug to be trained in their management. It also requires the facility where treatment is administered to have immediate, onsite access to the drug tocilizumab, which was approved in conjunction with tisagenlecleucel for the treatment of patients who experience CRS.
In addition to information about the REMS, the prescribing information details warnings and precautions relating to several other common toxicities. These include hypersensitivity reactions, serious infections, prolonged cytopenias, and hypogammaglobulinemia.
Patients should be monitored for signs and symptoms of infection and treated appropriately. Viral reactivation can occur after tisagenlecleucel treatment, so patients should be screened for HBV, HCV, and human immunodeficiency virus before collection of cells.
The administration of myeloid growth factors is not recommended during the first 3 weeks after infusion or until CRS has resolved. Immunoglobulin levels should be monitored after treatment and hypogammaglobulinemia managed using infection precautions, antibiotic prophylaxis, and immunoglobulin replacement according to standard guidelines.
Patients treated with tisagenlecleucel should also be monitored for life for secondary malignancies, should not be treated with live vaccines from 2 weeks before the start of lymphodepleting chemotherapy until immune recovery after tisagenlecleucel infusion, and should be aware of the potential for neurological events to impact their ability to drive and use dangerous machinery.4
Tisagenlecleucel is marketed as Kymriah by Novartis Pharmaceuticals. The recommended dose is 1 infusion of 0.2-5 x 106 CAR-positive viable T cells per kilogram of body weight intravenously (for patients ≤50kg) and 0.1-2.5 x 108 cells/kg (for patients >50kg), administered 2-14 days after lymphodepleting chemotherapy.
Axicabtagene ciloleucel
Axicabtagene ciloleucel was approved for the treatment of adult patients with certain types of relapsed or refractory large B-cell lymphoma, including diffuse large B-cell lymphoma (DLBCL), primary mediastinal B-cell lymphoma (PMBCL), high-grade B-cell lymphoma, and DLBCL arising from follicular lymphoma.5 It is not indicated for the treatment of patients with primary central nervous system lymphoma.
Approval followed positive results from the phase 2 single-arm, multicenter ZUMA-1 trial.6 Patients were included if they were aged 18 years of age and older, had histologically confirmed aggressive B-cell non-Hodgkin lymphoma that was chemotherapy refractory, had received adequate previous therapy, had at least 1 measurable lesion, had completed radiation or systemic therapy at least 2 weeks before, had resolved toxicities related to previous therapy, and had an Eastern Cooperative Oncology Group Performance Status of 0 (asymptomatic) or 1 (symptomatic), an absolute neutrophil count of ≥1000/µL, a platelet count of ≥50,000/µL, and adequate hepatic, renal and cardiac function. They were treated with a single infusion of axicabtagene ciloleucel after lymphodepleting chemotherapy.
Patients who had received previous CD19-targeted therapy, who had concomitant genetic syndromes associated with bone marrow failure, who had previous malignancy, and who had active or latent HBV/HCV infection were among those excluded from the study.
Patients were enrolled in 2 cohorts; those with DLBCL (n = 77) and those with PMBCL or transformed follicular lymphoma (n = 24). The primary endpoint was objective response rate, and after a primary analysis at a minimum of 6 months follow-up, the objective response rate was 82%, with a CR rate of 52%. Among patients who achieved CR, the median duration of response was not reached after a median follow-up of 7.9 months.
A subsequent updated analysis was performed when 108 patients had been followed for a minimum of 1 year. The objective response rate was 82%, and the CR rate was 58%, with some patients having CR in the absence of additional therapies as late as 15 months after treatment. At this updated analysis, 42% of patients continued to have a response, 40% of whom remained in CR.
The most common grade 3 or higher AEs included febrile neutropenia, fever, CRS, encephalopathy, infections, hypotension, and hypoxia. Serious AEs occurred in 52% of patients and included CRS, neurologic toxicity, prolonged cytopenias, and serious infections. Grade 3 or higher CRS or neurologic toxicities occurred in 13% and 28% of patients, respectively. Three patients died during treatment.
To mitigate the risk of CRS and neurologic toxicity, axicabtagene ciloleucel is approved with an REMS that requires appropriate certification and training before hospitals are cleared to administer the therapy.
Other warnings and precautions in the prescribing information relate to serious infections (monitor for signs and symptoms and treat appropriately), prolonged cytopenias (monitor blood counts), hypogammaglobulinemia (monitor immunoglobulin levels and manage appropriately), secondary malignancies (life-long monitoring), and the potential effects of neurologic events on a patient’s ability to drive and operate dangerous machinery (avoid for at least 8 weeks after infusion).7
Axicabtagene ciloleucel is marketed as Yescarta by Kite Pharma Inc. The recommended dose is a single intravenous infusion with a target of 2 x 106 CAR-positive viable T cells per kilogram of body weight, preceded by fludarabine and cyclophosphamide lymphodepleting chemotherapy.
There were a number of landmark approvals by the US Food and Drug Administration (FDA) in 2017 for cancer therapies, among them, the approval of the first two chimeric antigen receptor (CAR) T-cell therapies for cancer: tisagenlecleucel (in August) and axicabtagene ciloluecel (in October).1 CAR T-cells are a type of adoptive cell therapy or immunotherapy, in which the patient’s own immune cells are genetically engineered to target a tumor-associated antigen, in this case CD19. In tisagenlecleucel, CD19 proteins on B cells are targeted in the treatment of B-cell precursor acute lymphoblastic leukemia. Axicabtagene ciloluecel, the second anti-CD19 CAR T-cell therapy, was approved for the treatment of refractory, aggressive B-cell non-Hodgkin lymphoma.
Tisagenlecleucel
Tisagenlecleucel was approved for the treatment of pediatric patients up to 25 years of age with B-cell precursor acute lymphoblastic leukemia (ALL) whose disease is refractory to treatment or who have relapsed after second-line therapy or beyond.2 Approval was based on the pivotal ELIANA trial, a single-arm, global phase 2 trial conducted at 25 centers worldwide during April 2015 through April 2017. Patients were eligible for enrollment if they had relapsed or refractory B-cell ALL and were at least 3 years of age at screening and no older than 21 years of age at diagnosis, had at least 5% lymphoblasts in the bone marrow at screening, had tumor expression of CD19, had adequate organ function, and a Karnofsky (adult) or Lansky (child) Performance Status of ≥50 (with the worst allowable score, 50, indicating a patient who requires considerable assistance and frequent medical care [Karnofsky] and lying around much of the day, but gets dressed; no active playing but participates in all quiet play and activities [Lansky]). Exclusion criteria included previous receipt of anti-CD19 therapy, concomitant genetic syndromes associated with bone marrow failure, previous malignancy, and/or active or latent hepatitis B or C virus (HBV/HCV) infection.
The overall remission rate (ORR) was evaluated in 75 patients who were given a single dose of tisagenlecleucel (a median weight-adjusted dose of 3.1 x 106 transduced viable T cells per kg of body weight) within 14 days of completing a lymphodepleting chemotherapy regimen. The confirmed ORR after at least 3 months of follow-up, as assessed by independent central review, was 81%, which included 60% of patients in complete remission (CR) and 21% in complete remission with incomplete hematologic recovery, all of whom were negative for minimal residual disease.
The most common adverse events (AEs) associated with tisagenlecleucel treatment were cytokine release syndrome (CRS), hypogammaglobulinemia, infection, pyrexia, decreased appetite, headache, encephalopathy, hypotension, bleeding episodes, tachycardia, nausea, diarrhea, vomiting, viral infectious disorders, hypoxia, fatigue, acute kidney injury, and delirium. AEs were of grade 3/4 severity in 84% of patients.3
To combat serious safety issues, including CRS and neurologic toxicities, the FDA approved tisagenlecleucel with a Risk Evaluation and Mitigation Strategy (REMS) that, in part, requires health care providers who administer the drug to be trained in their management. It also requires the facility where treatment is administered to have immediate, onsite access to the drug tocilizumab, which was approved in conjunction with tisagenlecleucel for the treatment of patients who experience CRS.
In addition to information about the REMS, the prescribing information details warnings and precautions relating to several other common toxicities. These include hypersensitivity reactions, serious infections, prolonged cytopenias, and hypogammaglobulinemia.
Patients should be monitored for signs and symptoms of infection and treated appropriately. Viral reactivation can occur after tisagenlecleucel treatment, so patients should be screened for HBV, HCV, and human immunodeficiency virus before collection of cells.
The administration of myeloid growth factors is not recommended during the first 3 weeks after infusion or until CRS has resolved. Immunoglobulin levels should be monitored after treatment and hypogammaglobulinemia managed using infection precautions, antibiotic prophylaxis, and immunoglobulin replacement according to standard guidelines.
Patients treated with tisagenlecleucel should also be monitored for life for secondary malignancies, should not be treated with live vaccines from 2 weeks before the start of lymphodepleting chemotherapy until immune recovery after tisagenlecleucel infusion, and should be aware of the potential for neurological events to impact their ability to drive and use dangerous machinery.4
Tisagenlecleucel is marketed as Kymriah by Novartis Pharmaceuticals. The recommended dose is 1 infusion of 0.2-5 x 106 CAR-positive viable T cells per kilogram of body weight intravenously (for patients ≤50kg) and 0.1-2.5 x 108 cells/kg (for patients >50kg), administered 2-14 days after lymphodepleting chemotherapy.
Axicabtagene ciloleucel
Axicabtagene ciloleucel was approved for the treatment of adult patients with certain types of relapsed or refractory large B-cell lymphoma, including diffuse large B-cell lymphoma (DLBCL), primary mediastinal B-cell lymphoma (PMBCL), high-grade B-cell lymphoma, and DLBCL arising from follicular lymphoma.5 It is not indicated for the treatment of patients with primary central nervous system lymphoma.
Approval followed positive results from the phase 2 single-arm, multicenter ZUMA-1 trial.6 Patients were included if they were aged 18 years of age and older, had histologically confirmed aggressive B-cell non-Hodgkin lymphoma that was chemotherapy refractory, had received adequate previous therapy, had at least 1 measurable lesion, had completed radiation or systemic therapy at least 2 weeks before, had resolved toxicities related to previous therapy, and had an Eastern Cooperative Oncology Group Performance Status of 0 (asymptomatic) or 1 (symptomatic), an absolute neutrophil count of ≥1000/µL, a platelet count of ≥50,000/µL, and adequate hepatic, renal and cardiac function. They were treated with a single infusion of axicabtagene ciloleucel after lymphodepleting chemotherapy.
Patients who had received previous CD19-targeted therapy, who had concomitant genetic syndromes associated with bone marrow failure, who had previous malignancy, and who had active or latent HBV/HCV infection were among those excluded from the study.
Patients were enrolled in 2 cohorts; those with DLBCL (n = 77) and those with PMBCL or transformed follicular lymphoma (n = 24). The primary endpoint was objective response rate, and after a primary analysis at a minimum of 6 months follow-up, the objective response rate was 82%, with a CR rate of 52%. Among patients who achieved CR, the median duration of response was not reached after a median follow-up of 7.9 months.
A subsequent updated analysis was performed when 108 patients had been followed for a minimum of 1 year. The objective response rate was 82%, and the CR rate was 58%, with some patients having CR in the absence of additional therapies as late as 15 months after treatment. At this updated analysis, 42% of patients continued to have a response, 40% of whom remained in CR.
The most common grade 3 or higher AEs included febrile neutropenia, fever, CRS, encephalopathy, infections, hypotension, and hypoxia. Serious AEs occurred in 52% of patients and included CRS, neurologic toxicity, prolonged cytopenias, and serious infections. Grade 3 or higher CRS or neurologic toxicities occurred in 13% and 28% of patients, respectively. Three patients died during treatment.
To mitigate the risk of CRS and neurologic toxicity, axicabtagene ciloleucel is approved with an REMS that requires appropriate certification and training before hospitals are cleared to administer the therapy.
Other warnings and precautions in the prescribing information relate to serious infections (monitor for signs and symptoms and treat appropriately), prolonged cytopenias (monitor blood counts), hypogammaglobulinemia (monitor immunoglobulin levels and manage appropriately), secondary malignancies (life-long monitoring), and the potential effects of neurologic events on a patient’s ability to drive and operate dangerous machinery (avoid for at least 8 weeks after infusion).7
Axicabtagene ciloleucel is marketed as Yescarta by Kite Pharma Inc. The recommended dose is a single intravenous infusion with a target of 2 x 106 CAR-positive viable T cells per kilogram of body weight, preceded by fludarabine and cyclophosphamide lymphodepleting chemotherapy.
1. Bosserman LD. Cancer care in 2017: the promise of more cures with the challenges of an unstable health care system. JCSO 2017;15(6):e283-e290.
2. FDA approves tisagenlecleucel for B-cell ALL and tocilizumab for cytokine release syndrome. FDA News Release. August 30, 2017. https://www.fda.gov/Drugs/InformationOnDrugs/ApprovedDrugs/
ucm574154.htm. Accessed March 31, 2018.
3. Maude S.L, Laetsch T.W, Buechner S, et al. Tisagenlecleucel in children and young adults with B-Cell lymphoblastic leukemia. N Engl J Med. 2018;378:439-48.
4. Kymriah (tisagenlecleucel) suspension for intravenous use. Prescribing information. Novartis Pharmaceuticals Corporation, August, 2017. https://www.pharma.us.novartis.com/sites/www.pharma.us.novartis.
com/files/kymriah.pdf. Accessed March 31, 2018.
5. FDA approves axicabtagene ciloleucel for large B-cell lymphoma. FDA News Release. October 18, 2017. https://www.fda.gov/Drugs/
InformationOnDrugs/ApprovedDrugs/ucm581296.htm. Accessed March 31, 2018.
6. Neelapu, S.S, Locke F.L, Bartlett, L.J, et al. Axicabtagene Ciloleucel CAR T-Cell Therapy in Refractory Large B-Cell Lymphoma. N Engl J Med. 2017;377:2531-44.
7. Kymriah (tisagenlecleucel) suspension for intravenous use. Prescribing information. Kite Pharma Inc. October 2017. https://www.yescarta.com/wp-content/uploads/yescarta-pi.pdf. Accessed March 31, 2018.
1. Bosserman LD. Cancer care in 2017: the promise of more cures with the challenges of an unstable health care system. JCSO 2017;15(6):e283-e290.
2. FDA approves tisagenlecleucel for B-cell ALL and tocilizumab for cytokine release syndrome. FDA News Release. August 30, 2017. https://www.fda.gov/Drugs/InformationOnDrugs/ApprovedDrugs/
ucm574154.htm. Accessed March 31, 2018.
3. Maude S.L, Laetsch T.W, Buechner S, et al. Tisagenlecleucel in children and young adults with B-Cell lymphoblastic leukemia. N Engl J Med. 2018;378:439-48.
4. Kymriah (tisagenlecleucel) suspension for intravenous use. Prescribing information. Novartis Pharmaceuticals Corporation, August, 2017. https://www.pharma.us.novartis.com/sites/www.pharma.us.novartis.
com/files/kymriah.pdf. Accessed March 31, 2018.
5. FDA approves axicabtagene ciloleucel for large B-cell lymphoma. FDA News Release. October 18, 2017. https://www.fda.gov/Drugs/
InformationOnDrugs/ApprovedDrugs/ucm581296.htm. Accessed March 31, 2018.
6. Neelapu, S.S, Locke F.L, Bartlett, L.J, et al. Axicabtagene Ciloleucel CAR T-Cell Therapy in Refractory Large B-Cell Lymphoma. N Engl J Med. 2017;377:2531-44.
7. Kymriah (tisagenlecleucel) suspension for intravenous use. Prescribing information. Kite Pharma Inc. October 2017. https://www.yescarta.com/wp-content/uploads/yescarta-pi.pdf. Accessed March 31, 2018.
Lenalidomide best option for myeloma maintenance therapy
Lenalidomide may be the best maintenance treatment option for patients with newly diagnosed multiple myeloma, say the authors of a systematic review and meta-analysis.
Francesca M. Gay, MD, from the division of hematology at the University of Torino (Italy), and her coauthors wrote that despite the well-recognized importance of novel agent–based maintenance therapy for multiple myeloma, there is a lack of direct or indirect comparisons between the available regimens.
In a paper published online in JAMA Oncology, the researchers reported the results of the systematic review and meta-analysis of 11 prospective, phase 3 randomized, controlled trials of eight varieties of maintenance therapy, in 5,073 participants with newly diagnosed multiple myeloma.
Their analysis found that lenalidomide-based regimens showed the best progression-free survival rates (hazard ratio, 0.39 for lenalidomide plus prednisone; HR, 0.47 for lenalidomide alone), compared with placebo, and in 74% of the network meta-analysis simulations, they were the most effective options.
Four other maintenance treatment options - thalidomide-interferon, thalidomide-bortezomib, bortezomib-prednisone, and thalidomide alone – also showed progression-free survival gains – but interferon therapy failed to show any benefit.
However, for overall survival, lenalidomide alone was the best option, followed by thalidomide-bortezomib and bortezomib-prednisone. None of the other regimens considered showed benefits for overall survival.
“Long-term use of lenalidomide undoubtedly has advantages, owing to the lack of neuropathy, which is the main factor limiting the long-term use of both thalidomide and bortezomib,” the authors wrote.
When the authors restricted their analysis to trials conducted in the setting of autologous stem cell transplantation they found similar results, with lenalidomide-based regimens having the best progression-free and overall survival.
Patients with a good prognosis and standard-risk chromosomal abnormalities also did best with lenalidomide-based maintenance, while those with a poor prognosis – for example, with ISS stage III disease – benefited more from bortezomib-based maintenance. However patients with high-risk chromosomal abnormalities gained no advantage from any regimen, which the authors suggested may relate to small sample size, different cut-off points or their extremely poor prognosis.
The authors noted that their analysis did not take into account adverse events, drug discontinuations, or quality of life but focused solely on progression-free survival and overall survival.
“An increase in second primary malignant disease with prolonged lenalidomide therapy has been reported, but the survival benefit overcame the risk in all the trials,” they wrote.
They also commented that better treatment options are needed for patients with aggressive disease, and there are ongoing trials looking at second-generation proteasome inhibitors, immunomodulatory agents, and monoclonal antibodies for maintenance therapy.
Most authors declared research funding, advisory board positions, fees and honoraria from the pharmaceutical industry, including lenalidomide manufacturer Celgene.
SOURCE: Gay F et al. 2018 Aug 9. doi:10.1001/jamaoncol.2018.2961.
Lenalidomide may be the best maintenance treatment option for patients with newly diagnosed multiple myeloma, say the authors of a systematic review and meta-analysis.
Francesca M. Gay, MD, from the division of hematology at the University of Torino (Italy), and her coauthors wrote that despite the well-recognized importance of novel agent–based maintenance therapy for multiple myeloma, there is a lack of direct or indirect comparisons between the available regimens.
In a paper published online in JAMA Oncology, the researchers reported the results of the systematic review and meta-analysis of 11 prospective, phase 3 randomized, controlled trials of eight varieties of maintenance therapy, in 5,073 participants with newly diagnosed multiple myeloma.
Their analysis found that lenalidomide-based regimens showed the best progression-free survival rates (hazard ratio, 0.39 for lenalidomide plus prednisone; HR, 0.47 for lenalidomide alone), compared with placebo, and in 74% of the network meta-analysis simulations, they were the most effective options.
Four other maintenance treatment options - thalidomide-interferon, thalidomide-bortezomib, bortezomib-prednisone, and thalidomide alone – also showed progression-free survival gains – but interferon therapy failed to show any benefit.
However, for overall survival, lenalidomide alone was the best option, followed by thalidomide-bortezomib and bortezomib-prednisone. None of the other regimens considered showed benefits for overall survival.
“Long-term use of lenalidomide undoubtedly has advantages, owing to the lack of neuropathy, which is the main factor limiting the long-term use of both thalidomide and bortezomib,” the authors wrote.
When the authors restricted their analysis to trials conducted in the setting of autologous stem cell transplantation they found similar results, with lenalidomide-based regimens having the best progression-free and overall survival.
Patients with a good prognosis and standard-risk chromosomal abnormalities also did best with lenalidomide-based maintenance, while those with a poor prognosis – for example, with ISS stage III disease – benefited more from bortezomib-based maintenance. However patients with high-risk chromosomal abnormalities gained no advantage from any regimen, which the authors suggested may relate to small sample size, different cut-off points or their extremely poor prognosis.
The authors noted that their analysis did not take into account adverse events, drug discontinuations, or quality of life but focused solely on progression-free survival and overall survival.
“An increase in second primary malignant disease with prolonged lenalidomide therapy has been reported, but the survival benefit overcame the risk in all the trials,” they wrote.
They also commented that better treatment options are needed for patients with aggressive disease, and there are ongoing trials looking at second-generation proteasome inhibitors, immunomodulatory agents, and monoclonal antibodies for maintenance therapy.
Most authors declared research funding, advisory board positions, fees and honoraria from the pharmaceutical industry, including lenalidomide manufacturer Celgene.
SOURCE: Gay F et al. 2018 Aug 9. doi:10.1001/jamaoncol.2018.2961.
Lenalidomide may be the best maintenance treatment option for patients with newly diagnosed multiple myeloma, say the authors of a systematic review and meta-analysis.
Francesca M. Gay, MD, from the division of hematology at the University of Torino (Italy), and her coauthors wrote that despite the well-recognized importance of novel agent–based maintenance therapy for multiple myeloma, there is a lack of direct or indirect comparisons between the available regimens.
In a paper published online in JAMA Oncology, the researchers reported the results of the systematic review and meta-analysis of 11 prospective, phase 3 randomized, controlled trials of eight varieties of maintenance therapy, in 5,073 participants with newly diagnosed multiple myeloma.
Their analysis found that lenalidomide-based regimens showed the best progression-free survival rates (hazard ratio, 0.39 for lenalidomide plus prednisone; HR, 0.47 for lenalidomide alone), compared with placebo, and in 74% of the network meta-analysis simulations, they were the most effective options.
Four other maintenance treatment options - thalidomide-interferon, thalidomide-bortezomib, bortezomib-prednisone, and thalidomide alone – also showed progression-free survival gains – but interferon therapy failed to show any benefit.
However, for overall survival, lenalidomide alone was the best option, followed by thalidomide-bortezomib and bortezomib-prednisone. None of the other regimens considered showed benefits for overall survival.
“Long-term use of lenalidomide undoubtedly has advantages, owing to the lack of neuropathy, which is the main factor limiting the long-term use of both thalidomide and bortezomib,” the authors wrote.
When the authors restricted their analysis to trials conducted in the setting of autologous stem cell transplantation they found similar results, with lenalidomide-based regimens having the best progression-free and overall survival.
Patients with a good prognosis and standard-risk chromosomal abnormalities also did best with lenalidomide-based maintenance, while those with a poor prognosis – for example, with ISS stage III disease – benefited more from bortezomib-based maintenance. However patients with high-risk chromosomal abnormalities gained no advantage from any regimen, which the authors suggested may relate to small sample size, different cut-off points or their extremely poor prognosis.
The authors noted that their analysis did not take into account adverse events, drug discontinuations, or quality of life but focused solely on progression-free survival and overall survival.
“An increase in second primary malignant disease with prolonged lenalidomide therapy has been reported, but the survival benefit overcame the risk in all the trials,” they wrote.
They also commented that better treatment options are needed for patients with aggressive disease, and there are ongoing trials looking at second-generation proteasome inhibitors, immunomodulatory agents, and monoclonal antibodies for maintenance therapy.
Most authors declared research funding, advisory board positions, fees and honoraria from the pharmaceutical industry, including lenalidomide manufacturer Celgene.
SOURCE: Gay F et al. 2018 Aug 9. doi:10.1001/jamaoncol.2018.2961.
FROM JAMA ONCOLOGY
Key clinical point: Lenalidomide is the best option for maintenance therapy in multiple myeloma.
Major finding: Lenalidomide-based maintenance regimens show the best progression-free and overall survival in multiple myeloma.
Study details: Systematic review and network meta-analysis of 11 studies in 5073 participants with newly diagnosed multiple myeloma.
Disclosures: Most authors declared research funding, advisory board positions, fees and honoraria from the pharmaceutical industry, including lenalidomide manufacturer Celgene.
Source: Gay F et al. 2018 Aug 9. doi: 10.1001/jamaoncol.2018.2961.
Immunotherapies shape the treatment landscape for hematologic malignancies
The treatment landscape for hematologic malignancies is evolving faster than ever before, with a range of available therapeutic options that is now almost as diverse as this group of tumors. Immunotherapy in particular is front and center in the battle to control these diseases. Here, we describe the latest promising developments.
Exploiting T cells
The treatment landscape for hematologic malignancies is diverse, but one particular type of therapy has led the charge in improving patient outcomes. Several features of hematologic malignancies may make them particularly amenable to immunotherapy, including the fact that they are derived from corrupt immune cells and come into constant contact with other immune cells within the hematopoietic environment in which they reside. One of the oldest forms of immunotherapy, hematopoietic stem-cell transplantation (HSCT), remains the only curative option for many patients with hematologic malignancies.1,2
Given the central role of T lymphocytes in antitumor immunity, research efforts have focused on harnessing their activity for cancer treatment. One example of this is adoptive cellular therapy (ACT), in which T cells are collected from a patient, grown outside the body to increase their number and then reinfused back to the patient. Allogeneic HSCT, in which the stem cells are collected from a matching donor and transplanted into the patient, is a crude example of ACT. The graft-versus-tumor effect is driven by donor cells present in the transplant, but is limited by the development of graft-versus-host disease (GvHD), whereby the donor T cells attack healthy host tissue.
Other types of ACT have been developed in an effort to capitalize on the anti-tumor effects of the patients own T cells and thus avoid the potentially fatal complication of GvHD. Tumor-infiltrating lymphocyte (TIL) therapy was developed to exploit the presence of tumor-specific T cells in the tumor microenvironment. To date, the efficacy of TIL therapy has been predominantly limited to melanoma.1,3,4
Most recently, there has been a substantial buzz around the idea of genetically engineering T cells before they are reintroduced into the patient, to increase their anti-tumor efficacy and minimize damage to healthy tissue. This is achieved either by manipulating the antigen binding portion of the T-cell receptor to alter its specificity (TCR T cells) or by generating artificial fusion receptors known as chimeric antigen receptors (CAR T cells; Figure 1). The former is limited by the need for the TCR to be genetically matched to the patient’s immune type, whereas the latter is more flexible in this regard and has proved most successful.
CARs are formed by fusing part of the single-chain variable fragment of a monoclonal antibody to part of the TCR and one or more costimulatory molecules. In this way, the T cell is guided to the tumor through antibody recognition of a particular tumor-associated antigen, whereupon its effector functions are activated by engagement of the TCR and costimulatory signal.5
Headlining advancements with CAR T cells
CAR T cells directed against the CD19 antigen, found on the surface of many hematologic malignancies, are the most clinically advanced in this rapidly evolving field (Table 1). Durable remissions have been demonstrated in patients with relapsed and refractory hematologic malignancies, including non-Hodgkin lymphoma (NHL), chronic lymphocytic leukemia (CLL), and acute lymphoblastic lymphoma (ALL), with efficacy in both the pre- and posttransplant setting and in patients with chemotherapy-refractory disease.4,5
CTL019, a CD19-targeted CAR-T cell therapy, also known as tisagenlecleucel-T, has received breakthrough therapy designation from the US Food and Drug Administration (FDA) for the treatment of pediatric and adult patients with relapsed/refractory B-cell ALL and, more recently, for the treatment of adult patients with relapsed/refractory diffuse large B cell lymphoma.6
It is edging closer to FDA approval for the ALL indication, having been granted priority review in March on the basis of the phase 2 ELIANA trial, in which 50 patients received a single infusion of CTL019. Data presented at the American Society of Hematology annual meeting in December 2016 showed that 82% of patients achieved either complete remission (CR) or CR with incomplete blood count recovery (CRi) 3 months after treatment.7
Meanwhile, Kite Pharma has a rolling submission with the FDA for KTE-C19 (axicabtagene ciloleucel) for the treatment of patients with relapsed/refractory B-cell NHL who are ineligible for HSCT. In the ZUMA-1 trial, this therapy demonstrated an overall response rate (ORR) of 71%.8 Juno Therapeutics is developing several CAR T-cell therapies, including JCAR017, which elicited CR in 60% of patients with relapsed/refractory NHL.9
Target antigens other than CD19 are being explored, but these are mostly in the early stages of clinical development. While the focus has predominantly been on the treatment of lymphoma and leukemia, a presentation at the American Society for Clinical Oncology annual meeting in June reported the efficacy of a CAR-T cell therapy targeting the B-cell maturation antigen in patients with multiple myeloma. Results from 19 patients enrolled in an ongoing phase 1 trial in China showed that 14 had achieved stringent CR, 1 partial remission (PR) and 4 very good partial remission (VGPR).10
Antibodies evolve
Another type of immunotherapy that has revolutionized the treatment of hematologic malignancies is monoclonal antibodies (mAbs), targeting antigens on the surface of malignant B and T cells, in particular CD20. The approval of CD20-targeting mAb rituximab in 1997 was the first coup for the development of immunotherapy for the treatment of hematologic malignancies. It has become part of the standard treatment regimen for B-cell malignancies, including NHL and CLL, in combination with various types of chemotherapy.
Several other CD20-targeting antibodies have been developed (Table 2), some of which work in the same way as rituximab (eg, ofatumumab) and some that have a slightly different mechanism of action (eg, obinutuzumab).11 Both types of antibody have proved highly effective; ofatumumab is FDA approved for the treatment of advanced CLL and is being evaluated in phase 3 trials in other hematologic malignancies, while obinutuzumab has received regulatory approval for the first-line treatment of CLL, replacing the standard rituximab-containing regimen.12
The use of ofatumumab as maintenance therapy is supported by the results of the phase 3 PROLONG study in which 474 patients were randomly assigned to ofatumumab maintenance for 2 years or observation. Over a median follow-up of close to 20 months, ofatumumab-treated patients experienced improved progression-free survival (PFS; median PFS: 29.4 months vs 15.2 months; hazard ratio [HR], 0.50; P < .0001).13 Obinutuzumab’s new indication is based on data from the phase 3 GADOLIN trial, in which the obinutuzumab arm showed improved 3-year PFS compared with rituximab.14Until recently, multiple myeloma had proven relatively resistant to mAb therapy, but two new drug targets have dramatically altered the treatment landscape for this type of hematologic malignancy. CD2 subset 1 (CS1), also known as signaling lymphocytic activation molecule 7 (SLAMF7), and CD38 are glycoproteins expressed highly and nearly uniformly on the surface of multiple myeloma cells and only at low levels on other lymphoid and myeloid cells.15
Several antibodies directed at these targets are in clinical development, but daratumumab and elotuzumab, targeting CD38 and CS1, respectively, are both newly approved by the FDA for relapsed/refractory disease, daratumumab as monotherapy and elotuzumab in combination with lenalidomide and dexamethasone.
The indication for daratumumab was subsequently expanded to include its use in combination with lenalidomide plus dexamethasone or bortezomib plus dexamethasone. Support for this new indication came from 2 pivotal phase 3 trials. In the CASTOR trial, the combination of daratumumab with bortezomib–dexamethasone reduced the risk of disease progression or death by 61%, compared with bortezomib–dexamethasone alone, whereas daratumumab with lenalidomide–dexamethasone reduced the risk of disease progression or death by 63% in the POLLUX trial.16,17
Numerous clinical trials for both drugs are ongoing, including in the front-line setting in multiple myeloma, as well as trials in other types of B-cell malignancy, and several other CD38-targeting mAbs are also in development, including isatuximab, which has reached the phase 3 stage (NCT02990338).
Innovative design
Newer drug designs, which have sought to take mAb therapy to the next level, have also shown significant efficacy in hematologic malignancies. Antibody-drug conjugates (ADCs) combine the cytotoxic efficacy of chemotherapeutic agents with the specificity of a mAb targeting a tumor-specific antigen. This essentially creates a targeted payload that improves upon the efficacy of mAb monotherapy but mitigates some of the side effects of chemotherapy related to their indiscriminate killing of both cancerous and healthy cells.
The development of ADCs has been somewhat of a rollercoaster ride, with the approval and subsequent withdrawal of the first-in-class drug gemtuzumab ozogamicin in 2010, but the field was reinvigorated with the successful development of brentuximab vedotin, which targets the CD30 antigen and is approved for the treatment of multiple different hematologic malignancies, including, most recently, for posttransplant consolidation therapy in patients with Hodgkin lymphoma at high risk of relapse or progression.18
Brentuximab vedotin may soon be joined by another FDA-approved ADC, this one targeting CD22. Inotuzumab ozogamicin was recently granted priority review for the treatment of relapsed/refractory ALL. The FDA is reviewing data from the phase 3 INO-VATE study in which inotuzumab ozogamicin reduced the risk of disease progression or death by 55% compared with standard therapy, and a decision is expected by August.19 Other ADC targets being investigated in clinical trials include CD138, CD19, and CD33 (Table 3). Meanwhile, a meta-analysis of randomized trials suggested that the withdrawal of gemtuzumab ozogamicin may have been premature, indicating that it does improve long-term overall survival (OS) and reduces the risk of relapse.20
Bispecific antibodies that link natural killer (NK) cells to tumor cells, by targeting the NK-cell receptor CD16, known as BiKEs, are also in development in an attempt to harness the power of the innate immune response.
B-cell signaling a ripe target
Beyond immunotherapy, molecularly targeted drugs directed against key drivers of hematologic malignancies are also showing great promise. In particular, the B-cell receptor (BCR) signaling pathway, a central regulator of B-cell function, and its constituent kinases that are frequently dysregulated in B cell malignancies, has emerged as an exciting therapeutic avenue.
A variety of small molecule inhibitors targeting different nodes of the BCR pathway have been developed (Table 4), but the greatest success to date has been achieved with drugs targeting Bruton’s tyrosine kinase (BTK). Their clinical development culminated in the approval of ibrutinib for the treatment of patients with mantle cell lymphoma in 2013 and subsequently for patients with CLL, Waldenström macroglobulinemia, and most recently for patients with marginal zone lymphoma.
More than 100 clinical trials of ibrutinib are ongoing in an effort to further clarify its role in a variety of different disease settings. Furthermore, in an effort to address some of the toxicity concerns with ibrutinib, more specific BTK inhibitors are also being developed.
Other kinases that orchestrate the BCR pathway, including phosphatidylinositol-3-kinase (PI3K) and SYK, are also being targeted. The delta isoform of PI3K is expressed exclusively in hematopoietic cells and a number of PI3K delta inhibitors have been developed. Idelalisib received regulatory approval for the treatment of patients with CLL in combination with rituximab, and for patients with follicular lymphoma and small lymphocytic leukemia.
As with ibrutinib, a plethora of clinical trials are ongoing, however a major setback was suffered in the frontline setting when Gilead Sciences halted 6 clinical trials due to reports of increased rates of adverse events, including deaths.26 Meanwhile, SYK inhibitors have lagged behind somewhat in their development, but one such offering, entospletinib, is showing promise in patients with AML.27
Finally, there has been some success in targeting one of the downstream targets of the BCR signaling pathway, the Bcl2 protein that is involved in the regulation of apoptosis. Venetoclax was approved last year for the treatment of patients with relapsed/refractory CLL in patients who have a chromosome 17p deletion, based on the demonstration of impressive, durable responses.28
1. Bachireddy P, Burkhardt UE, Rajasagi M, Wu CJ. Haemato- logical malignancies: at the forefront of immunotherapeutic innovation. Nat Rev Cancer. 2015;15(4):201-215.
2. Im A, Pavletic SZ. Immunotherapy in hematologic malignancies: past, present, and future. J Hematol Oncol. 2017;10(1):94.
3. Gill S. Planes, trains, and automobiles: perspectives on CAR T cells and other cellular therapies for hematologic malignancies. Curr Hematol Malig Rep. 2016;11(4):318-325.
4. Ye B, Stary CM, Gao Q, et al. Genetically modified T-cell-based adoptive immunotherapy in hematological malignancies. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5237740/. Published January 2, 2017. Accessed July 22, 2017.
5. Sharpe M, Mount N. Genetically modified T cells in cancer therapy: opportunities and challenges. Dis Model Mech. 2015;8(4):337-350.
6. Novartis. Novartis personalized cell therapy CTL019 receives FDA breakthrough therapy designation. https://www.novartis.com/news/media-releases/novartis-personalized-cell-therapy-ctl019-receivesfda-breakthrough-therapy. Published July 7, 2014. Accessed June 19,
2017.
7. Novartis. Novartis presents results from first global registration trial of CTL019 in pediatric and young adult patients with r/r B-ALL. https://www.novartis.com/news/media-releases/novartis-presentsresults-first-global-registration-trial-ctl019-pediatric-and. Published December 4, 2016. Accessed June 19, 2017.
8. Locke FL, Neelapu SS, Bartlett NL, et al. Phase 1 Results of ZUMA1: a multicenter study of KTE-C19 Anti-CD19 CAR T cell therapy in refractory aggressive lymphoma. Mol Ther. 2017;25(1):285-295.
9. Abramson JS, Palomba L, Gordon L. Transcend NHL 001: immunotherapy with the CD19-Directd CAR T-cell product JCAR017 results in high complete response rates in relapsed or refractory B-cell non-Hodgkin lymphoma. Paper presented at 58th American Society of Hematology Annual Meeting; December 3-6, 2016; San Diego, CA.
10. Fan F, Zhao W, Liu J, et al. Durable remissions with BCMA-specific chimeric antigen receptor (CAR)-modified T cells in patients with refractory/relapsed multiple myeloma. J Clin Oncol. 2017;35(suppl;):Abstr LBA3001.
11. Okroj M, Osterborg A, Blom AM. Effector mechanisms of anti-CD20 monoclonal antibodies in B cell malignancies. Cancer Treat Rev. 2013;39(6):632-639.
12. Safdari Y, Ahmadzadeh V, Farajnia S. CD20-targeting in B-cell malignancies: novel prospects for antibodies and combination therapies. Invest New Drugs. 2016;34(4):497-512.
13. van Oers MH, Kuliczkowski K, Smolej L, et al. Ofatumumab maintenance versus observation in relapsed chronic lymphocytic leukaemia (PROLONG): an open-label, multicentre, randomised phase 3 study. Lancet Oncol. 2015;16(13):1370-1379.
14. Sehn LH, Chua N, Mayer J, et al. Obinutuzumab plus bendamustine versus bendamustine monotherapy in patients with rituximab-refractory indolent non-Hodgkin lymphoma (GADOLIN): a randomised, controlled, open-label, multicentre, phase 3 trial. Lancet Oncol. 2016;17(8):1081-1093.
15. Touzeau C, Moreau P, Dumontet C. Monoclonal antibody therapy in multiple myeloma. Leukemia. 2017;31(5):1039-1047.
16. Palumbo A, Chanan-Khan A, Weisel K, et al. Daratumumab, bortezomib, and dexamethasone for multiple myeloma. N Engl J Med. 2016;375(8):754-766.
17. Dimopoulos MA, Oriol A, Nahi H, et al. Daratumumab, lenalidomide, and dexamethasone for multiple myeloma. N Engl J Med. 2016;375(14):1319-1331.
18. Beck A, Goetsch L, Dumontet C, Corvaia N. Strategies and challenges for the next generation of antibody-drug conjugates. Nat Rev Drug Discov. 2017;16(5):315-337.
19. Kantarjian HM, DeAngelo DJ, Stelljes M, et al. Inotuzumab ozogamicin versus standard therapy for acute lymphoblastic leukemia. N Engl J Med. 2016;375(8):740-753.
20. Hills RK, Castaigne S, Appelbaum FR, et al. Addition of gemtuzumab ozogamicin to induction chemotherapy in adult patients with acute myeloid leukaemia: a meta-analysis of individual patient data from randomised controlled trials. Lancet Oncol. 2014;15(9):986-996.
21. Huehls AM, Coupet TA, Sentman CL. Bispecific T-cell engagers for cancer immunotherapy. Immunol Cell Biol. 2015;93(3):290-296.
22. Kantarjian H, Stein A, Gokbuget N, et al. Blinatumomab versus chemotherapy for advanced acute lymphoblastic leukemia. N Engl J Med. 2017;376(9):836-847.
23. Koehrer S, Burger JA. B-cell receptor signaling in chronic lymphocytic leukemia and other B-cell malignancies. Clin Adv Hematol Oncol. 2016;14(1):55-65.
24. Seda V, Mraz M. B-cell receptor signalling and its crosstalk with other pathways in normal and malignant cells. Eur J Haematol. 2015;94(3):193-205.
25. Bojarczuk K, Bobrowicz M, Dwojak M, et al. B-cell receptor signaling in the pathogenesis of lymphoid malignancies. Blood Cells Mol Dis. 2015;55(3):255-265.
26. Medscape Medical News. Gilead stops six trials adding idelalisib to other drugs. http://www.medscape.com/viewarticle/860372. Published March 14, 2016. Accessed June 19, 2017.
27. Sharman J, Di Paolo J. Targeting B-cell receptor signaling kinases in chronic lymphocytic leukemia: the promise of entospletinib. Ther Adv Hematol. 2016;7(3):157-170.
28. Food and Drug Administration. FDA approves new drug for chronic lymphocytic leukemia in patients with a specific chromosomal abnormality. https://www.fda.gov/NewsEvents/Newsroom/PressAnnouncements/ucm495253.htm. Released April 11, 2016. Accessed June 19, 2017.
The treatment landscape for hematologic malignancies is evolving faster than ever before, with a range of available therapeutic options that is now almost as diverse as this group of tumors. Immunotherapy in particular is front and center in the battle to control these diseases. Here, we describe the latest promising developments.
Exploiting T cells
The treatment landscape for hematologic malignancies is diverse, but one particular type of therapy has led the charge in improving patient outcomes. Several features of hematologic malignancies may make them particularly amenable to immunotherapy, including the fact that they are derived from corrupt immune cells and come into constant contact with other immune cells within the hematopoietic environment in which they reside. One of the oldest forms of immunotherapy, hematopoietic stem-cell transplantation (HSCT), remains the only curative option for many patients with hematologic malignancies.1,2
Given the central role of T lymphocytes in antitumor immunity, research efforts have focused on harnessing their activity for cancer treatment. One example of this is adoptive cellular therapy (ACT), in which T cells are collected from a patient, grown outside the body to increase their number and then reinfused back to the patient. Allogeneic HSCT, in which the stem cells are collected from a matching donor and transplanted into the patient, is a crude example of ACT. The graft-versus-tumor effect is driven by donor cells present in the transplant, but is limited by the development of graft-versus-host disease (GvHD), whereby the donor T cells attack healthy host tissue.
Other types of ACT have been developed in an effort to capitalize on the anti-tumor effects of the patients own T cells and thus avoid the potentially fatal complication of GvHD. Tumor-infiltrating lymphocyte (TIL) therapy was developed to exploit the presence of tumor-specific T cells in the tumor microenvironment. To date, the efficacy of TIL therapy has been predominantly limited to melanoma.1,3,4
Most recently, there has been a substantial buzz around the idea of genetically engineering T cells before they are reintroduced into the patient, to increase their anti-tumor efficacy and minimize damage to healthy tissue. This is achieved either by manipulating the antigen binding portion of the T-cell receptor to alter its specificity (TCR T cells) or by generating artificial fusion receptors known as chimeric antigen receptors (CAR T cells; Figure 1). The former is limited by the need for the TCR to be genetically matched to the patient’s immune type, whereas the latter is more flexible in this regard and has proved most successful.
CARs are formed by fusing part of the single-chain variable fragment of a monoclonal antibody to part of the TCR and one or more costimulatory molecules. In this way, the T cell is guided to the tumor through antibody recognition of a particular tumor-associated antigen, whereupon its effector functions are activated by engagement of the TCR and costimulatory signal.5
Headlining advancements with CAR T cells
CAR T cells directed against the CD19 antigen, found on the surface of many hematologic malignancies, are the most clinically advanced in this rapidly evolving field (Table 1). Durable remissions have been demonstrated in patients with relapsed and refractory hematologic malignancies, including non-Hodgkin lymphoma (NHL), chronic lymphocytic leukemia (CLL), and acute lymphoblastic lymphoma (ALL), with efficacy in both the pre- and posttransplant setting and in patients with chemotherapy-refractory disease.4,5
CTL019, a CD19-targeted CAR-T cell therapy, also known as tisagenlecleucel-T, has received breakthrough therapy designation from the US Food and Drug Administration (FDA) for the treatment of pediatric and adult patients with relapsed/refractory B-cell ALL and, more recently, for the treatment of adult patients with relapsed/refractory diffuse large B cell lymphoma.6
It is edging closer to FDA approval for the ALL indication, having been granted priority review in March on the basis of the phase 2 ELIANA trial, in which 50 patients received a single infusion of CTL019. Data presented at the American Society of Hematology annual meeting in December 2016 showed that 82% of patients achieved either complete remission (CR) or CR with incomplete blood count recovery (CRi) 3 months after treatment.7
Meanwhile, Kite Pharma has a rolling submission with the FDA for KTE-C19 (axicabtagene ciloleucel) for the treatment of patients with relapsed/refractory B-cell NHL who are ineligible for HSCT. In the ZUMA-1 trial, this therapy demonstrated an overall response rate (ORR) of 71%.8 Juno Therapeutics is developing several CAR T-cell therapies, including JCAR017, which elicited CR in 60% of patients with relapsed/refractory NHL.9
Target antigens other than CD19 are being explored, but these are mostly in the early stages of clinical development. While the focus has predominantly been on the treatment of lymphoma and leukemia, a presentation at the American Society for Clinical Oncology annual meeting in June reported the efficacy of a CAR-T cell therapy targeting the B-cell maturation antigen in patients with multiple myeloma. Results from 19 patients enrolled in an ongoing phase 1 trial in China showed that 14 had achieved stringent CR, 1 partial remission (PR) and 4 very good partial remission (VGPR).10
Antibodies evolve
Another type of immunotherapy that has revolutionized the treatment of hematologic malignancies is monoclonal antibodies (mAbs), targeting antigens on the surface of malignant B and T cells, in particular CD20. The approval of CD20-targeting mAb rituximab in 1997 was the first coup for the development of immunotherapy for the treatment of hematologic malignancies. It has become part of the standard treatment regimen for B-cell malignancies, including NHL and CLL, in combination with various types of chemotherapy.
Several other CD20-targeting antibodies have been developed (Table 2), some of which work in the same way as rituximab (eg, ofatumumab) and some that have a slightly different mechanism of action (eg, obinutuzumab).11 Both types of antibody have proved highly effective; ofatumumab is FDA approved for the treatment of advanced CLL and is being evaluated in phase 3 trials in other hematologic malignancies, while obinutuzumab has received regulatory approval for the first-line treatment of CLL, replacing the standard rituximab-containing regimen.12
The use of ofatumumab as maintenance therapy is supported by the results of the phase 3 PROLONG study in which 474 patients were randomly assigned to ofatumumab maintenance for 2 years or observation. Over a median follow-up of close to 20 months, ofatumumab-treated patients experienced improved progression-free survival (PFS; median PFS: 29.4 months vs 15.2 months; hazard ratio [HR], 0.50; P < .0001).13 Obinutuzumab’s new indication is based on data from the phase 3 GADOLIN trial, in which the obinutuzumab arm showed improved 3-year PFS compared with rituximab.14Until recently, multiple myeloma had proven relatively resistant to mAb therapy, but two new drug targets have dramatically altered the treatment landscape for this type of hematologic malignancy. CD2 subset 1 (CS1), also known as signaling lymphocytic activation molecule 7 (SLAMF7), and CD38 are glycoproteins expressed highly and nearly uniformly on the surface of multiple myeloma cells and only at low levels on other lymphoid and myeloid cells.15
Several antibodies directed at these targets are in clinical development, but daratumumab and elotuzumab, targeting CD38 and CS1, respectively, are both newly approved by the FDA for relapsed/refractory disease, daratumumab as monotherapy and elotuzumab in combination with lenalidomide and dexamethasone.
The indication for daratumumab was subsequently expanded to include its use in combination with lenalidomide plus dexamethasone or bortezomib plus dexamethasone. Support for this new indication came from 2 pivotal phase 3 trials. In the CASTOR trial, the combination of daratumumab with bortezomib–dexamethasone reduced the risk of disease progression or death by 61%, compared with bortezomib–dexamethasone alone, whereas daratumumab with lenalidomide–dexamethasone reduced the risk of disease progression or death by 63% in the POLLUX trial.16,17
Numerous clinical trials for both drugs are ongoing, including in the front-line setting in multiple myeloma, as well as trials in other types of B-cell malignancy, and several other CD38-targeting mAbs are also in development, including isatuximab, which has reached the phase 3 stage (NCT02990338).
Innovative design
Newer drug designs, which have sought to take mAb therapy to the next level, have also shown significant efficacy in hematologic malignancies. Antibody-drug conjugates (ADCs) combine the cytotoxic efficacy of chemotherapeutic agents with the specificity of a mAb targeting a tumor-specific antigen. This essentially creates a targeted payload that improves upon the efficacy of mAb monotherapy but mitigates some of the side effects of chemotherapy related to their indiscriminate killing of both cancerous and healthy cells.
The development of ADCs has been somewhat of a rollercoaster ride, with the approval and subsequent withdrawal of the first-in-class drug gemtuzumab ozogamicin in 2010, but the field was reinvigorated with the successful development of brentuximab vedotin, which targets the CD30 antigen and is approved for the treatment of multiple different hematologic malignancies, including, most recently, for posttransplant consolidation therapy in patients with Hodgkin lymphoma at high risk of relapse or progression.18
Brentuximab vedotin may soon be joined by another FDA-approved ADC, this one targeting CD22. Inotuzumab ozogamicin was recently granted priority review for the treatment of relapsed/refractory ALL. The FDA is reviewing data from the phase 3 INO-VATE study in which inotuzumab ozogamicin reduced the risk of disease progression or death by 55% compared with standard therapy, and a decision is expected by August.19 Other ADC targets being investigated in clinical trials include CD138, CD19, and CD33 (Table 3). Meanwhile, a meta-analysis of randomized trials suggested that the withdrawal of gemtuzumab ozogamicin may have been premature, indicating that it does improve long-term overall survival (OS) and reduces the risk of relapse.20
Bispecific antibodies that link natural killer (NK) cells to tumor cells, by targeting the NK-cell receptor CD16, known as BiKEs, are also in development in an attempt to harness the power of the innate immune response.
B-cell signaling a ripe target
Beyond immunotherapy, molecularly targeted drugs directed against key drivers of hematologic malignancies are also showing great promise. In particular, the B-cell receptor (BCR) signaling pathway, a central regulator of B-cell function, and its constituent kinases that are frequently dysregulated in B cell malignancies, has emerged as an exciting therapeutic avenue.
A variety of small molecule inhibitors targeting different nodes of the BCR pathway have been developed (Table 4), but the greatest success to date has been achieved with drugs targeting Bruton’s tyrosine kinase (BTK). Their clinical development culminated in the approval of ibrutinib for the treatment of patients with mantle cell lymphoma in 2013 and subsequently for patients with CLL, Waldenström macroglobulinemia, and most recently for patients with marginal zone lymphoma.
More than 100 clinical trials of ibrutinib are ongoing in an effort to further clarify its role in a variety of different disease settings. Furthermore, in an effort to address some of the toxicity concerns with ibrutinib, more specific BTK inhibitors are also being developed.
Other kinases that orchestrate the BCR pathway, including phosphatidylinositol-3-kinase (PI3K) and SYK, are also being targeted. The delta isoform of PI3K is expressed exclusively in hematopoietic cells and a number of PI3K delta inhibitors have been developed. Idelalisib received regulatory approval for the treatment of patients with CLL in combination with rituximab, and for patients with follicular lymphoma and small lymphocytic leukemia.
As with ibrutinib, a plethora of clinical trials are ongoing, however a major setback was suffered in the frontline setting when Gilead Sciences halted 6 clinical trials due to reports of increased rates of adverse events, including deaths.26 Meanwhile, SYK inhibitors have lagged behind somewhat in their development, but one such offering, entospletinib, is showing promise in patients with AML.27
Finally, there has been some success in targeting one of the downstream targets of the BCR signaling pathway, the Bcl2 protein that is involved in the regulation of apoptosis. Venetoclax was approved last year for the treatment of patients with relapsed/refractory CLL in patients who have a chromosome 17p deletion, based on the demonstration of impressive, durable responses.28
The treatment landscape for hematologic malignancies is evolving faster than ever before, with a range of available therapeutic options that is now almost as diverse as this group of tumors. Immunotherapy in particular is front and center in the battle to control these diseases. Here, we describe the latest promising developments.
Exploiting T cells
The treatment landscape for hematologic malignancies is diverse, but one particular type of therapy has led the charge in improving patient outcomes. Several features of hematologic malignancies may make them particularly amenable to immunotherapy, including the fact that they are derived from corrupt immune cells and come into constant contact with other immune cells within the hematopoietic environment in which they reside. One of the oldest forms of immunotherapy, hematopoietic stem-cell transplantation (HSCT), remains the only curative option for many patients with hematologic malignancies.1,2
Given the central role of T lymphocytes in antitumor immunity, research efforts have focused on harnessing their activity for cancer treatment. One example of this is adoptive cellular therapy (ACT), in which T cells are collected from a patient, grown outside the body to increase their number and then reinfused back to the patient. Allogeneic HSCT, in which the stem cells are collected from a matching donor and transplanted into the patient, is a crude example of ACT. The graft-versus-tumor effect is driven by donor cells present in the transplant, but is limited by the development of graft-versus-host disease (GvHD), whereby the donor T cells attack healthy host tissue.
Other types of ACT have been developed in an effort to capitalize on the anti-tumor effects of the patients own T cells and thus avoid the potentially fatal complication of GvHD. Tumor-infiltrating lymphocyte (TIL) therapy was developed to exploit the presence of tumor-specific T cells in the tumor microenvironment. To date, the efficacy of TIL therapy has been predominantly limited to melanoma.1,3,4
Most recently, there has been a substantial buzz around the idea of genetically engineering T cells before they are reintroduced into the patient, to increase their anti-tumor efficacy and minimize damage to healthy tissue. This is achieved either by manipulating the antigen binding portion of the T-cell receptor to alter its specificity (TCR T cells) or by generating artificial fusion receptors known as chimeric antigen receptors (CAR T cells; Figure 1). The former is limited by the need for the TCR to be genetically matched to the patient’s immune type, whereas the latter is more flexible in this regard and has proved most successful.
CARs are formed by fusing part of the single-chain variable fragment of a monoclonal antibody to part of the TCR and one or more costimulatory molecules. In this way, the T cell is guided to the tumor through antibody recognition of a particular tumor-associated antigen, whereupon its effector functions are activated by engagement of the TCR and costimulatory signal.5
Headlining advancements with CAR T cells
CAR T cells directed against the CD19 antigen, found on the surface of many hematologic malignancies, are the most clinically advanced in this rapidly evolving field (Table 1). Durable remissions have been demonstrated in patients with relapsed and refractory hematologic malignancies, including non-Hodgkin lymphoma (NHL), chronic lymphocytic leukemia (CLL), and acute lymphoblastic lymphoma (ALL), with efficacy in both the pre- and posttransplant setting and in patients with chemotherapy-refractory disease.4,5
CTL019, a CD19-targeted CAR-T cell therapy, also known as tisagenlecleucel-T, has received breakthrough therapy designation from the US Food and Drug Administration (FDA) for the treatment of pediatric and adult patients with relapsed/refractory B-cell ALL and, more recently, for the treatment of adult patients with relapsed/refractory diffuse large B cell lymphoma.6
It is edging closer to FDA approval for the ALL indication, having been granted priority review in March on the basis of the phase 2 ELIANA trial, in which 50 patients received a single infusion of CTL019. Data presented at the American Society of Hematology annual meeting in December 2016 showed that 82% of patients achieved either complete remission (CR) or CR with incomplete blood count recovery (CRi) 3 months after treatment.7
Meanwhile, Kite Pharma has a rolling submission with the FDA for KTE-C19 (axicabtagene ciloleucel) for the treatment of patients with relapsed/refractory B-cell NHL who are ineligible for HSCT. In the ZUMA-1 trial, this therapy demonstrated an overall response rate (ORR) of 71%.8 Juno Therapeutics is developing several CAR T-cell therapies, including JCAR017, which elicited CR in 60% of patients with relapsed/refractory NHL.9
Target antigens other than CD19 are being explored, but these are mostly in the early stages of clinical development. While the focus has predominantly been on the treatment of lymphoma and leukemia, a presentation at the American Society for Clinical Oncology annual meeting in June reported the efficacy of a CAR-T cell therapy targeting the B-cell maturation antigen in patients with multiple myeloma. Results from 19 patients enrolled in an ongoing phase 1 trial in China showed that 14 had achieved stringent CR, 1 partial remission (PR) and 4 very good partial remission (VGPR).10
Antibodies evolve
Another type of immunotherapy that has revolutionized the treatment of hematologic malignancies is monoclonal antibodies (mAbs), targeting antigens on the surface of malignant B and T cells, in particular CD20. The approval of CD20-targeting mAb rituximab in 1997 was the first coup for the development of immunotherapy for the treatment of hematologic malignancies. It has become part of the standard treatment regimen for B-cell malignancies, including NHL and CLL, in combination with various types of chemotherapy.
Several other CD20-targeting antibodies have been developed (Table 2), some of which work in the same way as rituximab (eg, ofatumumab) and some that have a slightly different mechanism of action (eg, obinutuzumab).11 Both types of antibody have proved highly effective; ofatumumab is FDA approved for the treatment of advanced CLL and is being evaluated in phase 3 trials in other hematologic malignancies, while obinutuzumab has received regulatory approval for the first-line treatment of CLL, replacing the standard rituximab-containing regimen.12
The use of ofatumumab as maintenance therapy is supported by the results of the phase 3 PROLONG study in which 474 patients were randomly assigned to ofatumumab maintenance for 2 years or observation. Over a median follow-up of close to 20 months, ofatumumab-treated patients experienced improved progression-free survival (PFS; median PFS: 29.4 months vs 15.2 months; hazard ratio [HR], 0.50; P < .0001).13 Obinutuzumab’s new indication is based on data from the phase 3 GADOLIN trial, in which the obinutuzumab arm showed improved 3-year PFS compared with rituximab.14Until recently, multiple myeloma had proven relatively resistant to mAb therapy, but two new drug targets have dramatically altered the treatment landscape for this type of hematologic malignancy. CD2 subset 1 (CS1), also known as signaling lymphocytic activation molecule 7 (SLAMF7), and CD38 are glycoproteins expressed highly and nearly uniformly on the surface of multiple myeloma cells and only at low levels on other lymphoid and myeloid cells.15
Several antibodies directed at these targets are in clinical development, but daratumumab and elotuzumab, targeting CD38 and CS1, respectively, are both newly approved by the FDA for relapsed/refractory disease, daratumumab as monotherapy and elotuzumab in combination with lenalidomide and dexamethasone.
The indication for daratumumab was subsequently expanded to include its use in combination with lenalidomide plus dexamethasone or bortezomib plus dexamethasone. Support for this new indication came from 2 pivotal phase 3 trials. In the CASTOR trial, the combination of daratumumab with bortezomib–dexamethasone reduced the risk of disease progression or death by 61%, compared with bortezomib–dexamethasone alone, whereas daratumumab with lenalidomide–dexamethasone reduced the risk of disease progression or death by 63% in the POLLUX trial.16,17
Numerous clinical trials for both drugs are ongoing, including in the front-line setting in multiple myeloma, as well as trials in other types of B-cell malignancy, and several other CD38-targeting mAbs are also in development, including isatuximab, which has reached the phase 3 stage (NCT02990338).
Innovative design
Newer drug designs, which have sought to take mAb therapy to the next level, have also shown significant efficacy in hematologic malignancies. Antibody-drug conjugates (ADCs) combine the cytotoxic efficacy of chemotherapeutic agents with the specificity of a mAb targeting a tumor-specific antigen. This essentially creates a targeted payload that improves upon the efficacy of mAb monotherapy but mitigates some of the side effects of chemotherapy related to their indiscriminate killing of both cancerous and healthy cells.
The development of ADCs has been somewhat of a rollercoaster ride, with the approval and subsequent withdrawal of the first-in-class drug gemtuzumab ozogamicin in 2010, but the field was reinvigorated with the successful development of brentuximab vedotin, which targets the CD30 antigen and is approved for the treatment of multiple different hematologic malignancies, including, most recently, for posttransplant consolidation therapy in patients with Hodgkin lymphoma at high risk of relapse or progression.18
Brentuximab vedotin may soon be joined by another FDA-approved ADC, this one targeting CD22. Inotuzumab ozogamicin was recently granted priority review for the treatment of relapsed/refractory ALL. The FDA is reviewing data from the phase 3 INO-VATE study in which inotuzumab ozogamicin reduced the risk of disease progression or death by 55% compared with standard therapy, and a decision is expected by August.19 Other ADC targets being investigated in clinical trials include CD138, CD19, and CD33 (Table 3). Meanwhile, a meta-analysis of randomized trials suggested that the withdrawal of gemtuzumab ozogamicin may have been premature, indicating that it does improve long-term overall survival (OS) and reduces the risk of relapse.20
Bispecific antibodies that link natural killer (NK) cells to tumor cells, by targeting the NK-cell receptor CD16, known as BiKEs, are also in development in an attempt to harness the power of the innate immune response.
B-cell signaling a ripe target
Beyond immunotherapy, molecularly targeted drugs directed against key drivers of hematologic malignancies are also showing great promise. In particular, the B-cell receptor (BCR) signaling pathway, a central regulator of B-cell function, and its constituent kinases that are frequently dysregulated in B cell malignancies, has emerged as an exciting therapeutic avenue.
A variety of small molecule inhibitors targeting different nodes of the BCR pathway have been developed (Table 4), but the greatest success to date has been achieved with drugs targeting Bruton’s tyrosine kinase (BTK). Their clinical development culminated in the approval of ibrutinib for the treatment of patients with mantle cell lymphoma in 2013 and subsequently for patients with CLL, Waldenström macroglobulinemia, and most recently for patients with marginal zone lymphoma.
More than 100 clinical trials of ibrutinib are ongoing in an effort to further clarify its role in a variety of different disease settings. Furthermore, in an effort to address some of the toxicity concerns with ibrutinib, more specific BTK inhibitors are also being developed.
Other kinases that orchestrate the BCR pathway, including phosphatidylinositol-3-kinase (PI3K) and SYK, are also being targeted. The delta isoform of PI3K is expressed exclusively in hematopoietic cells and a number of PI3K delta inhibitors have been developed. Idelalisib received regulatory approval for the treatment of patients with CLL in combination with rituximab, and for patients with follicular lymphoma and small lymphocytic leukemia.
As with ibrutinib, a plethora of clinical trials are ongoing, however a major setback was suffered in the frontline setting when Gilead Sciences halted 6 clinical trials due to reports of increased rates of adverse events, including deaths.26 Meanwhile, SYK inhibitors have lagged behind somewhat in their development, but one such offering, entospletinib, is showing promise in patients with AML.27
Finally, there has been some success in targeting one of the downstream targets of the BCR signaling pathway, the Bcl2 protein that is involved in the regulation of apoptosis. Venetoclax was approved last year for the treatment of patients with relapsed/refractory CLL in patients who have a chromosome 17p deletion, based on the demonstration of impressive, durable responses.28
1. Bachireddy P, Burkhardt UE, Rajasagi M, Wu CJ. Haemato- logical malignancies: at the forefront of immunotherapeutic innovation. Nat Rev Cancer. 2015;15(4):201-215.
2. Im A, Pavletic SZ. Immunotherapy in hematologic malignancies: past, present, and future. J Hematol Oncol. 2017;10(1):94.
3. Gill S. Planes, trains, and automobiles: perspectives on CAR T cells and other cellular therapies for hematologic malignancies. Curr Hematol Malig Rep. 2016;11(4):318-325.
4. Ye B, Stary CM, Gao Q, et al. Genetically modified T-cell-based adoptive immunotherapy in hematological malignancies. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5237740/. Published January 2, 2017. Accessed July 22, 2017.
5. Sharpe M, Mount N. Genetically modified T cells in cancer therapy: opportunities and challenges. Dis Model Mech. 2015;8(4):337-350.
6. Novartis. Novartis personalized cell therapy CTL019 receives FDA breakthrough therapy designation. https://www.novartis.com/news/media-releases/novartis-personalized-cell-therapy-ctl019-receivesfda-breakthrough-therapy. Published July 7, 2014. Accessed June 19,
2017.
7. Novartis. Novartis presents results from first global registration trial of CTL019 in pediatric and young adult patients with r/r B-ALL. https://www.novartis.com/news/media-releases/novartis-presentsresults-first-global-registration-trial-ctl019-pediatric-and. Published December 4, 2016. Accessed June 19, 2017.
8. Locke FL, Neelapu SS, Bartlett NL, et al. Phase 1 Results of ZUMA1: a multicenter study of KTE-C19 Anti-CD19 CAR T cell therapy in refractory aggressive lymphoma. Mol Ther. 2017;25(1):285-295.
9. Abramson JS, Palomba L, Gordon L. Transcend NHL 001: immunotherapy with the CD19-Directd CAR T-cell product JCAR017 results in high complete response rates in relapsed or refractory B-cell non-Hodgkin lymphoma. Paper presented at 58th American Society of Hematology Annual Meeting; December 3-6, 2016; San Diego, CA.
10. Fan F, Zhao W, Liu J, et al. Durable remissions with BCMA-specific chimeric antigen receptor (CAR)-modified T cells in patients with refractory/relapsed multiple myeloma. J Clin Oncol. 2017;35(suppl;):Abstr LBA3001.
11. Okroj M, Osterborg A, Blom AM. Effector mechanisms of anti-CD20 monoclonal antibodies in B cell malignancies. Cancer Treat Rev. 2013;39(6):632-639.
12. Safdari Y, Ahmadzadeh V, Farajnia S. CD20-targeting in B-cell malignancies: novel prospects for antibodies and combination therapies. Invest New Drugs. 2016;34(4):497-512.
13. van Oers MH, Kuliczkowski K, Smolej L, et al. Ofatumumab maintenance versus observation in relapsed chronic lymphocytic leukaemia (PROLONG): an open-label, multicentre, randomised phase 3 study. Lancet Oncol. 2015;16(13):1370-1379.
14. Sehn LH, Chua N, Mayer J, et al. Obinutuzumab plus bendamustine versus bendamustine monotherapy in patients with rituximab-refractory indolent non-Hodgkin lymphoma (GADOLIN): a randomised, controlled, open-label, multicentre, phase 3 trial. Lancet Oncol. 2016;17(8):1081-1093.
15. Touzeau C, Moreau P, Dumontet C. Monoclonal antibody therapy in multiple myeloma. Leukemia. 2017;31(5):1039-1047.
16. Palumbo A, Chanan-Khan A, Weisel K, et al. Daratumumab, bortezomib, and dexamethasone for multiple myeloma. N Engl J Med. 2016;375(8):754-766.
17. Dimopoulos MA, Oriol A, Nahi H, et al. Daratumumab, lenalidomide, and dexamethasone for multiple myeloma. N Engl J Med. 2016;375(14):1319-1331.
18. Beck A, Goetsch L, Dumontet C, Corvaia N. Strategies and challenges for the next generation of antibody-drug conjugates. Nat Rev Drug Discov. 2017;16(5):315-337.
19. Kantarjian HM, DeAngelo DJ, Stelljes M, et al. Inotuzumab ozogamicin versus standard therapy for acute lymphoblastic leukemia. N Engl J Med. 2016;375(8):740-753.
20. Hills RK, Castaigne S, Appelbaum FR, et al. Addition of gemtuzumab ozogamicin to induction chemotherapy in adult patients with acute myeloid leukaemia: a meta-analysis of individual patient data from randomised controlled trials. Lancet Oncol. 2014;15(9):986-996.
21. Huehls AM, Coupet TA, Sentman CL. Bispecific T-cell engagers for cancer immunotherapy. Immunol Cell Biol. 2015;93(3):290-296.
22. Kantarjian H, Stein A, Gokbuget N, et al. Blinatumomab versus chemotherapy for advanced acute lymphoblastic leukemia. N Engl J Med. 2017;376(9):836-847.
23. Koehrer S, Burger JA. B-cell receptor signaling in chronic lymphocytic leukemia and other B-cell malignancies. Clin Adv Hematol Oncol. 2016;14(1):55-65.
24. Seda V, Mraz M. B-cell receptor signalling and its crosstalk with other pathways in normal and malignant cells. Eur J Haematol. 2015;94(3):193-205.
25. Bojarczuk K, Bobrowicz M, Dwojak M, et al. B-cell receptor signaling in the pathogenesis of lymphoid malignancies. Blood Cells Mol Dis. 2015;55(3):255-265.
26. Medscape Medical News. Gilead stops six trials adding idelalisib to other drugs. http://www.medscape.com/viewarticle/860372. Published March 14, 2016. Accessed June 19, 2017.
27. Sharman J, Di Paolo J. Targeting B-cell receptor signaling kinases in chronic lymphocytic leukemia: the promise of entospletinib. Ther Adv Hematol. 2016;7(3):157-170.
28. Food and Drug Administration. FDA approves new drug for chronic lymphocytic leukemia in patients with a specific chromosomal abnormality. https://www.fda.gov/NewsEvents/Newsroom/PressAnnouncements/ucm495253.htm. Released April 11, 2016. Accessed June 19, 2017.
1. Bachireddy P, Burkhardt UE, Rajasagi M, Wu CJ. Haemato- logical malignancies: at the forefront of immunotherapeutic innovation. Nat Rev Cancer. 2015;15(4):201-215.
2. Im A, Pavletic SZ. Immunotherapy in hematologic malignancies: past, present, and future. J Hematol Oncol. 2017;10(1):94.
3. Gill S. Planes, trains, and automobiles: perspectives on CAR T cells and other cellular therapies for hematologic malignancies. Curr Hematol Malig Rep. 2016;11(4):318-325.
4. Ye B, Stary CM, Gao Q, et al. Genetically modified T-cell-based adoptive immunotherapy in hematological malignancies. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5237740/. Published January 2, 2017. Accessed July 22, 2017.
5. Sharpe M, Mount N. Genetically modified T cells in cancer therapy: opportunities and challenges. Dis Model Mech. 2015;8(4):337-350.
6. Novartis. Novartis personalized cell therapy CTL019 receives FDA breakthrough therapy designation. https://www.novartis.com/news/media-releases/novartis-personalized-cell-therapy-ctl019-receivesfda-breakthrough-therapy. Published July 7, 2014. Accessed June 19,
2017.
7. Novartis. Novartis presents results from first global registration trial of CTL019 in pediatric and young adult patients with r/r B-ALL. https://www.novartis.com/news/media-releases/novartis-presentsresults-first-global-registration-trial-ctl019-pediatric-and. Published December 4, 2016. Accessed June 19, 2017.
8. Locke FL, Neelapu SS, Bartlett NL, et al. Phase 1 Results of ZUMA1: a multicenter study of KTE-C19 Anti-CD19 CAR T cell therapy in refractory aggressive lymphoma. Mol Ther. 2017;25(1):285-295.
9. Abramson JS, Palomba L, Gordon L. Transcend NHL 001: immunotherapy with the CD19-Directd CAR T-cell product JCAR017 results in high complete response rates in relapsed or refractory B-cell non-Hodgkin lymphoma. Paper presented at 58th American Society of Hematology Annual Meeting; December 3-6, 2016; San Diego, CA.
10. Fan F, Zhao W, Liu J, et al. Durable remissions with BCMA-specific chimeric antigen receptor (CAR)-modified T cells in patients with refractory/relapsed multiple myeloma. J Clin Oncol. 2017;35(suppl;):Abstr LBA3001.
11. Okroj M, Osterborg A, Blom AM. Effector mechanisms of anti-CD20 monoclonal antibodies in B cell malignancies. Cancer Treat Rev. 2013;39(6):632-639.
12. Safdari Y, Ahmadzadeh V, Farajnia S. CD20-targeting in B-cell malignancies: novel prospects for antibodies and combination therapies. Invest New Drugs. 2016;34(4):497-512.
13. van Oers MH, Kuliczkowski K, Smolej L, et al. Ofatumumab maintenance versus observation in relapsed chronic lymphocytic leukaemia (PROLONG): an open-label, multicentre, randomised phase 3 study. Lancet Oncol. 2015;16(13):1370-1379.
14. Sehn LH, Chua N, Mayer J, et al. Obinutuzumab plus bendamustine versus bendamustine monotherapy in patients with rituximab-refractory indolent non-Hodgkin lymphoma (GADOLIN): a randomised, controlled, open-label, multicentre, phase 3 trial. Lancet Oncol. 2016;17(8):1081-1093.
15. Touzeau C, Moreau P, Dumontet C. Monoclonal antibody therapy in multiple myeloma. Leukemia. 2017;31(5):1039-1047.
16. Palumbo A, Chanan-Khan A, Weisel K, et al. Daratumumab, bortezomib, and dexamethasone for multiple myeloma. N Engl J Med. 2016;375(8):754-766.
17. Dimopoulos MA, Oriol A, Nahi H, et al. Daratumumab, lenalidomide, and dexamethasone for multiple myeloma. N Engl J Med. 2016;375(14):1319-1331.
18. Beck A, Goetsch L, Dumontet C, Corvaia N. Strategies and challenges for the next generation of antibody-drug conjugates. Nat Rev Drug Discov. 2017;16(5):315-337.
19. Kantarjian HM, DeAngelo DJ, Stelljes M, et al. Inotuzumab ozogamicin versus standard therapy for acute lymphoblastic leukemia. N Engl J Med. 2016;375(8):740-753.
20. Hills RK, Castaigne S, Appelbaum FR, et al. Addition of gemtuzumab ozogamicin to induction chemotherapy in adult patients with acute myeloid leukaemia: a meta-analysis of individual patient data from randomised controlled trials. Lancet Oncol. 2014;15(9):986-996.
21. Huehls AM, Coupet TA, Sentman CL. Bispecific T-cell engagers for cancer immunotherapy. Immunol Cell Biol. 2015;93(3):290-296.
22. Kantarjian H, Stein A, Gokbuget N, et al. Blinatumomab versus chemotherapy for advanced acute lymphoblastic leukemia. N Engl J Med. 2017;376(9):836-847.
23. Koehrer S, Burger JA. B-cell receptor signaling in chronic lymphocytic leukemia and other B-cell malignancies. Clin Adv Hematol Oncol. 2016;14(1):55-65.
24. Seda V, Mraz M. B-cell receptor signalling and its crosstalk with other pathways in normal and malignant cells. Eur J Haematol. 2015;94(3):193-205.
25. Bojarczuk K, Bobrowicz M, Dwojak M, et al. B-cell receptor signaling in the pathogenesis of lymphoid malignancies. Blood Cells Mol Dis. 2015;55(3):255-265.
26. Medscape Medical News. Gilead stops six trials adding idelalisib to other drugs. http://www.medscape.com/viewarticle/860372. Published March 14, 2016. Accessed June 19, 2017.
27. Sharman J, Di Paolo J. Targeting B-cell receptor signaling kinases in chronic lymphocytic leukemia: the promise of entospletinib. Ther Adv Hematol. 2016;7(3):157-170.
28. Food and Drug Administration. FDA approves new drug for chronic lymphocytic leukemia in patients with a specific chromosomal abnormality. https://www.fda.gov/NewsEvents/Newsroom/PressAnnouncements/ucm495253.htm. Released April 11, 2016. Accessed June 19, 2017.
Study links communication, outcomes in cancer
Better communication between cancer patients and healthcare providers may provide tangible benefits, according to research published in JNCCN.
Cancer survivors who reported greater satisfaction in communicating with healthcare providers had better general health and mental health, fewer doctor visits, and reduced healthcare spending, when compared to patients who were less satisfied with communication.
“Our study suggests that when cancer care providers are more effective communicators, their patients are more likely to follow medical advice and medication protocols,” said study author Ashish Rai, PhD, of the American Cancer Society in Framingham, Massachusetts.
For this study, Dr Rai and his colleagues analyzed data from the Medical Expenditure Panel Survey (MEPS) from 2008 through 2014.
The researchers evaluated 4588 cancer survivors, dividing them into non-elderly and elderly groups. The non-elderly patients (n=2257) had a median age of 54 (range, 18-64), and the elderly patients (n=2331) had a median age of 75.
Communication satisfaction was measured by the Consumer Assessment of Healthcare Providers and Systems (CAHPS), in conjunction with the MEPS data.
Patients used a 4-point scale ranging from “never” to “always” to track whether their providers did the following:
- Listened carefully
- Explained things in a way that was easy to understand
- Showed respect for what the respondent had to say
- Spent enough time with the respondent.
A global satisfaction rating scale (0 to 10) was factored into a composite score and tracked across 12 months.
The researchers then assessed various patient outcomes.
Satisfaction and outcomes
Overall, patients who were the most satisfied with communication had the best outcomes with regard to general, physical, and mental health; fewer emergency department, hospital, and office visits; and reduced drug, out-of-pocket, and total healthcare expenditures.
However, the associations between communication satisfaction and outcomes were not always significant.
In an adjusted analysis, the elderly patients who were more satisfied with communication in year 1 had significantly better outcomes in year 2 for general health, mental health, and total healthcare expenditures.
Elderly patients 65+ | |||
Least satisfied
(tertile 1) |
Moderately satisfied (tertile 2) | Most satisfied
(tertile 3) |
|
Excellent/very good general health | |||
Unadjusted proportion | 23.6% | 31.8% | 45.8% |
Predictive margin | 30.3
(95% CI 26.0–34.6) |
32.2
(95% CI 28.9–35.5) |
38.9
(95% CI 35.1–42.7) |
P value | Reference | 0.466 | 0.007 |
Highest quartile of mental health | |||
Unadjusted proportion | 22.9% | 34.8% | 41.7% |
Predictive margin | 27.1
(95% CI 22.1–32.1) |
35.5
(95% CI 31.5–39.5) |
37.0
(95% CI 32.7–41.4) |
P value | Reference | 0.013 | 0.005 |
Total healthcare expenditure | |||
Unadjusted mean | $33,558 | $27,341 | $29,591 |
Predictive margin | $34,071 ($29,011–$39,131) | $28,230 ($22,907–$33,553) | $26,995 ($22,568–$31,422) |
P value | Reference | 0.301 | 0.049 |
For the non-elderly patients, those who were more satisfied with communication in year 1 had significantly better outcomes in year 2 for physician office visits and mental health.
Non-elderly patients (18-64) | |||
Least satisfied (tertile 1) | Moderately satisfied (tertile 2) | Most satisfied (tertile 3) | |
Total physician office visits | |||
Unadjusted mean | 7.96 | 6.96 | 5.85 |
Predictive margin | 7.42
(95% CI 6.78–8.06) |
6.60
(95% CI 5.98–7.22) |
6.26
(95% CI 5.47–7.05) |
P value | Reference | 0.211 | 0.038 |
Highest quartile of mental health | |||
Unadjusted proportion | 23.5% | 35.5% | 41.1% |
Predictive margin | 29.7
(95% CI 25.3–34.1) |
36.0
(95% CI 31.3–40.7) |
34.0
(95% CI 29.5–38.4) |
P value | Reference | 0.036 | 0.187 |
Baseline health and satisfaction
In both age groups, patients with better baseline health reported higher satisfaction with communication. Conversely, the more comorbidities patients had, the lower their satisfaction rating.
The researchers said this suggests that more complex circumstances negatively impacted patients’ perception of their communication, and the finding highlights the importance of coordinating care across a team of providers.
“The results of this study present an interesting challenge: those survivors most in need of good communication about complex medical issues may not be receiving the information they seek in a manner that they find helpful. That, in turn, results in higher healthcare utilization and expenditure,” said Crystal Denlinger, MD, of Fox Chase Cancer Center in Philadelphia, Pennsylvania, who was not involved in this study.
“This could be due to many factors, including time constraints, competing priorities, and increasingly complex cancer therapies. This study highlights the need for additional research into how to tailor the healthcare experience both during and after cancer treatment in order to communicate more effectively.”
Conclusions
“Communication needs vary from patient to patient,” Dr Rai noted. “While time constraints do pose a challenge, the amount of time spent is only one of the attributes of effective communication. By tailoring their communication strategy to a patient’s specific needs, providers may be able to communicate more effectively in the same amount of time.”
Dr Rai also pointed out the importance of delegating both clinical and communication duties as needed. Dr Rai and his colleagues also cited earlier research demonstrating better outcomes for patients who had the option of communicating with their provider electronically.1,2
Ultimately, the researchers concluded that effective provider communication can improve outcomes by streamlining care, alleviating anxiety, boosting mutual trust, and increasing treatment adherence.
1. Basch E, Deal AM, Dueck AC, et al. Overall survival results of a trial assessing patient-reported outcomes for symptom monitoring during routine cancer treatment. JAMA 2017;318:197–198.
2. Smith AB, Basch E. Role of patient-reported outcomes in postsurgical monitoring in oncology. J Oncol Pract 2017;13:535–538.
Better communication between cancer patients and healthcare providers may provide tangible benefits, according to research published in JNCCN.
Cancer survivors who reported greater satisfaction in communicating with healthcare providers had better general health and mental health, fewer doctor visits, and reduced healthcare spending, when compared to patients who were less satisfied with communication.
“Our study suggests that when cancer care providers are more effective communicators, their patients are more likely to follow medical advice and medication protocols,” said study author Ashish Rai, PhD, of the American Cancer Society in Framingham, Massachusetts.
For this study, Dr Rai and his colleagues analyzed data from the Medical Expenditure Panel Survey (MEPS) from 2008 through 2014.
The researchers evaluated 4588 cancer survivors, dividing them into non-elderly and elderly groups. The non-elderly patients (n=2257) had a median age of 54 (range, 18-64), and the elderly patients (n=2331) had a median age of 75.
Communication satisfaction was measured by the Consumer Assessment of Healthcare Providers and Systems (CAHPS), in conjunction with the MEPS data.
Patients used a 4-point scale ranging from “never” to “always” to track whether their providers did the following:
- Listened carefully
- Explained things in a way that was easy to understand
- Showed respect for what the respondent had to say
- Spent enough time with the respondent.
A global satisfaction rating scale (0 to 10) was factored into a composite score and tracked across 12 months.
The researchers then assessed various patient outcomes.
Satisfaction and outcomes
Overall, patients who were the most satisfied with communication had the best outcomes with regard to general, physical, and mental health; fewer emergency department, hospital, and office visits; and reduced drug, out-of-pocket, and total healthcare expenditures.
However, the associations between communication satisfaction and outcomes were not always significant.
In an adjusted analysis, the elderly patients who were more satisfied with communication in year 1 had significantly better outcomes in year 2 for general health, mental health, and total healthcare expenditures.
Elderly patients 65+ | |||
Least satisfied
(tertile 1) |
Moderately satisfied (tertile 2) | Most satisfied
(tertile 3) |
|
Excellent/very good general health | |||
Unadjusted proportion | 23.6% | 31.8% | 45.8% |
Predictive margin | 30.3
(95% CI 26.0–34.6) |
32.2
(95% CI 28.9–35.5) |
38.9
(95% CI 35.1–42.7) |
P value | Reference | 0.466 | 0.007 |
Highest quartile of mental health | |||
Unadjusted proportion | 22.9% | 34.8% | 41.7% |
Predictive margin | 27.1
(95% CI 22.1–32.1) |
35.5
(95% CI 31.5–39.5) |
37.0
(95% CI 32.7–41.4) |
P value | Reference | 0.013 | 0.005 |
Total healthcare expenditure | |||
Unadjusted mean | $33,558 | $27,341 | $29,591 |
Predictive margin | $34,071 ($29,011–$39,131) | $28,230 ($22,907–$33,553) | $26,995 ($22,568–$31,422) |
P value | Reference | 0.301 | 0.049 |
For the non-elderly patients, those who were more satisfied with communication in year 1 had significantly better outcomes in year 2 for physician office visits and mental health.
Non-elderly patients (18-64) | |||
Least satisfied (tertile 1) | Moderately satisfied (tertile 2) | Most satisfied (tertile 3) | |
Total physician office visits | |||
Unadjusted mean | 7.96 | 6.96 | 5.85 |
Predictive margin | 7.42
(95% CI 6.78–8.06) |
6.60
(95% CI 5.98–7.22) |
6.26
(95% CI 5.47–7.05) |
P value | Reference | 0.211 | 0.038 |
Highest quartile of mental health | |||
Unadjusted proportion | 23.5% | 35.5% | 41.1% |
Predictive margin | 29.7
(95% CI 25.3–34.1) |
36.0
(95% CI 31.3–40.7) |
34.0
(95% CI 29.5–38.4) |
P value | Reference | 0.036 | 0.187 |
Baseline health and satisfaction
In both age groups, patients with better baseline health reported higher satisfaction with communication. Conversely, the more comorbidities patients had, the lower their satisfaction rating.
The researchers said this suggests that more complex circumstances negatively impacted patients’ perception of their communication, and the finding highlights the importance of coordinating care across a team of providers.
“The results of this study present an interesting challenge: those survivors most in need of good communication about complex medical issues may not be receiving the information they seek in a manner that they find helpful. That, in turn, results in higher healthcare utilization and expenditure,” said Crystal Denlinger, MD, of Fox Chase Cancer Center in Philadelphia, Pennsylvania, who was not involved in this study.
“This could be due to many factors, including time constraints, competing priorities, and increasingly complex cancer therapies. This study highlights the need for additional research into how to tailor the healthcare experience both during and after cancer treatment in order to communicate more effectively.”
Conclusions
“Communication needs vary from patient to patient,” Dr Rai noted. “While time constraints do pose a challenge, the amount of time spent is only one of the attributes of effective communication. By tailoring their communication strategy to a patient’s specific needs, providers may be able to communicate more effectively in the same amount of time.”
Dr Rai also pointed out the importance of delegating both clinical and communication duties as needed. Dr Rai and his colleagues also cited earlier research demonstrating better outcomes for patients who had the option of communicating with their provider electronically.1,2
Ultimately, the researchers concluded that effective provider communication can improve outcomes by streamlining care, alleviating anxiety, boosting mutual trust, and increasing treatment adherence.
1. Basch E, Deal AM, Dueck AC, et al. Overall survival results of a trial assessing patient-reported outcomes for symptom monitoring during routine cancer treatment. JAMA 2017;318:197–198.
2. Smith AB, Basch E. Role of patient-reported outcomes in postsurgical monitoring in oncology. J Oncol Pract 2017;13:535–538.
Better communication between cancer patients and healthcare providers may provide tangible benefits, according to research published in JNCCN.
Cancer survivors who reported greater satisfaction in communicating with healthcare providers had better general health and mental health, fewer doctor visits, and reduced healthcare spending, when compared to patients who were less satisfied with communication.
“Our study suggests that when cancer care providers are more effective communicators, their patients are more likely to follow medical advice and medication protocols,” said study author Ashish Rai, PhD, of the American Cancer Society in Framingham, Massachusetts.
For this study, Dr Rai and his colleagues analyzed data from the Medical Expenditure Panel Survey (MEPS) from 2008 through 2014.
The researchers evaluated 4588 cancer survivors, dividing them into non-elderly and elderly groups. The non-elderly patients (n=2257) had a median age of 54 (range, 18-64), and the elderly patients (n=2331) had a median age of 75.
Communication satisfaction was measured by the Consumer Assessment of Healthcare Providers and Systems (CAHPS), in conjunction with the MEPS data.
Patients used a 4-point scale ranging from “never” to “always” to track whether their providers did the following:
- Listened carefully
- Explained things in a way that was easy to understand
- Showed respect for what the respondent had to say
- Spent enough time with the respondent.
A global satisfaction rating scale (0 to 10) was factored into a composite score and tracked across 12 months.
The researchers then assessed various patient outcomes.
Satisfaction and outcomes
Overall, patients who were the most satisfied with communication had the best outcomes with regard to general, physical, and mental health; fewer emergency department, hospital, and office visits; and reduced drug, out-of-pocket, and total healthcare expenditures.
However, the associations between communication satisfaction and outcomes were not always significant.
In an adjusted analysis, the elderly patients who were more satisfied with communication in year 1 had significantly better outcomes in year 2 for general health, mental health, and total healthcare expenditures.
Elderly patients 65+ | |||
Least satisfied
(tertile 1) |
Moderately satisfied (tertile 2) | Most satisfied
(tertile 3) |
|
Excellent/very good general health | |||
Unadjusted proportion | 23.6% | 31.8% | 45.8% |
Predictive margin | 30.3
(95% CI 26.0–34.6) |
32.2
(95% CI 28.9–35.5) |
38.9
(95% CI 35.1–42.7) |
P value | Reference | 0.466 | 0.007 |
Highest quartile of mental health | |||
Unadjusted proportion | 22.9% | 34.8% | 41.7% |
Predictive margin | 27.1
(95% CI 22.1–32.1) |
35.5
(95% CI 31.5–39.5) |
37.0
(95% CI 32.7–41.4) |
P value | Reference | 0.013 | 0.005 |
Total healthcare expenditure | |||
Unadjusted mean | $33,558 | $27,341 | $29,591 |
Predictive margin | $34,071 ($29,011–$39,131) | $28,230 ($22,907–$33,553) | $26,995 ($22,568–$31,422) |
P value | Reference | 0.301 | 0.049 |
For the non-elderly patients, those who were more satisfied with communication in year 1 had significantly better outcomes in year 2 for physician office visits and mental health.
Non-elderly patients (18-64) | |||
Least satisfied (tertile 1) | Moderately satisfied (tertile 2) | Most satisfied (tertile 3) | |
Total physician office visits | |||
Unadjusted mean | 7.96 | 6.96 | 5.85 |
Predictive margin | 7.42
(95% CI 6.78–8.06) |
6.60
(95% CI 5.98–7.22) |
6.26
(95% CI 5.47–7.05) |
P value | Reference | 0.211 | 0.038 |
Highest quartile of mental health | |||
Unadjusted proportion | 23.5% | 35.5% | 41.1% |
Predictive margin | 29.7
(95% CI 25.3–34.1) |
36.0
(95% CI 31.3–40.7) |
34.0
(95% CI 29.5–38.4) |
P value | Reference | 0.036 | 0.187 |
Baseline health and satisfaction
In both age groups, patients with better baseline health reported higher satisfaction with communication. Conversely, the more comorbidities patients had, the lower their satisfaction rating.
The researchers said this suggests that more complex circumstances negatively impacted patients’ perception of their communication, and the finding highlights the importance of coordinating care across a team of providers.
“The results of this study present an interesting challenge: those survivors most in need of good communication about complex medical issues may not be receiving the information they seek in a manner that they find helpful. That, in turn, results in higher healthcare utilization and expenditure,” said Crystal Denlinger, MD, of Fox Chase Cancer Center in Philadelphia, Pennsylvania, who was not involved in this study.
“This could be due to many factors, including time constraints, competing priorities, and increasingly complex cancer therapies. This study highlights the need for additional research into how to tailor the healthcare experience both during and after cancer treatment in order to communicate more effectively.”
Conclusions
“Communication needs vary from patient to patient,” Dr Rai noted. “While time constraints do pose a challenge, the amount of time spent is only one of the attributes of effective communication. By tailoring their communication strategy to a patient’s specific needs, providers may be able to communicate more effectively in the same amount of time.”
Dr Rai also pointed out the importance of delegating both clinical and communication duties as needed. Dr Rai and his colleagues also cited earlier research demonstrating better outcomes for patients who had the option of communicating with their provider electronically.1,2
Ultimately, the researchers concluded that effective provider communication can improve outcomes by streamlining care, alleviating anxiety, boosting mutual trust, and increasing treatment adherence.
1. Basch E, Deal AM, Dueck AC, et al. Overall survival results of a trial assessing patient-reported outcomes for symptom monitoring during routine cancer treatment. JAMA 2017;318:197–198.
2. Smith AB, Basch E. Role of patient-reported outcomes in postsurgical monitoring in oncology. J Oncol Pract 2017;13:535–538.