Aggressive Lymphomas

Photo by Bill Branson

MADRID—The biosimilar GP2013 has demonstrated equivalence to its reference drug rituximab in patients with previously untreated, advanced-stage follicular lymphoma (FL), according to researchers.

Treatment with GP2013 plus cyclophosphamide, vincristine, and prednisone (CVP) produced a similar overall response rate (ORR) as rituximab plus CVP in the phase 3 ASSIST-FL trial.

Survival rates were also similar between the treatment arms, as were adverse events (AEs).

Results from this study were published in The Lancet Haematology and presented at ESMO 2017 Congress (abstract 994O).

The study was funded by Hexal AG, a Sandoz company (part of the Novartis group), which is marketing GP2013 as Rixathon in Europe.

Patients and treatment

The trial included 629 patients with previously untreated, advanced-stage FL. They were randomized to receive 8 cycles of GP2013-CVP (n=314) or rituximab-CVP (n=315). Responders in either arm could receive monotherapy maintenance for up to 2 years.

The mean age was 57.5 in the GP2013 arm and 56.4 in the rituximab arm. Fifty-eight percent and 54% of patients, respectively, were female.

Fifty-seven percent of patients in the GP2013 arm and 56% in the rituximab arm had an ECOG performance status of 0. Forty percent and 39%, respectively, had a status of 1. Two percent and 4%, respectively, had a status of 2. (For the remaining 1% of patients in each arm, data on performance status were missing.)

Patients had an Ann Arbor stage of III—46% in the GP2013 arm and 43% in the GP2013 arm—or IV—54% in the GP2013 arm and 57% in the rituximab arm.

Fifty-six percent of patients in each arm were high-risk according to FLIPI. Thirty-four percent in the GP2013 arm and 33% in the rituximab arm were intermediate-risk. Ten percent and 11%, respectively, were low-risk.

Fourteen percent of patients in the GP2013 arm and 18% in the rituximab arm had bulky disease. Fifteen percent and 13%, respectively, had splenic involvement.

ORR and survival

The patients had a median follow-up of 23.8 months. The primary efficacy endpoint was equivalence in ORR, defined by a 95% confidence interval (CI) with a margin of ± 12% standard deviation.

The primary endpoint was met, as the ORR was 87% in the GP2013 arm and 88% in the rituximab arm, with a difference of –0.40% (95% CI –5.94%, 5.14%).

The complete response rate was 15% in the GP2013 arm and 13% in the rituximab arm. The partial response rates were 72% and 74%, respectively.

The median progression-free survival and overall survival have not been reached. However, the progression-free survival rate was 70% in the GP2013 arm and 76% in the rituximab arm (hazard ratio [HR]=1.31; 95% CI 1.02, 1.69).

The overall survival rate was 93% in the GP2013 arm and 91% in the rituximab arm (HR=0.77; 95% CI 0.49, 1.22).

Safety

During the combination phase, the incidence of AEs was 93% in the GP2013 arm and 91% in the rituximab arm. The incidence of serious AEs was 23% and 20%, respectively.

The most frequent AEs (in the GP2013 and rituximab arms, respectively) were neutropenia (26% and 30%), constipation (22% and 20%), and nausea (16% and 13%). The most common grade 3/4 AE was neutropenia (18% and 21%).

There were 11 deaths reported during the combination phase—4 in the GP2013 arm and 7 in the rituximab arm.

Three deaths in the GP2013 arm (sudden death, septic shock, and respiratory failure) and 2 deaths in the rituximab arm (multiple organ dysfunction syndrome and sepsis) were suspected to be related to study treatment.

During the maintenance phase, the incidence of AEs was 63% in the GP2013 arm and 57% in the rituximab arm. The incidence of serious AEs was 6% and 4%, respectively.

The most frequent AEs (in the GP2013 and rituximab arms, respectively) were infections and infestations (20% and 27%), neutropenia (10% and 6%), cough (9% and 6%), and upper respiratory tract infection (3% and 6%). The most common grade 3/4 AE was neutropenia (7% and 4%).

There were 4 deaths reported during the maintenance phase, 2 in each treatment arm.

Photo by Bill Branson

MADRID—The biosimilar GP2013 has demonstrated equivalence to its reference drug rituximab in patients with previously untreated, advanced-stage follicular lymphoma (FL), according to researchers.

Treatment with GP2013 plus cyclophosphamide, vincristine, and prednisone (CVP) produced a similar overall response rate (ORR) as rituximab plus CVP in the phase 3 ASSIST-FL trial.

Survival rates were also similar between the treatment arms, as were adverse events (AEs).

Results from this study were published in The Lancet Haematology and presented at ESMO 2017 Congress (abstract 994O).

The study was funded by Hexal AG, a Sandoz company (part of the Novartis group), which is marketing GP2013 as Rixathon in Europe.

Patients and treatment

The trial included 629 patients with previously untreated, advanced-stage FL. They were randomized to receive 8 cycles of GP2013-CVP (n=314) or rituximab-CVP (n=315). Responders in either arm could receive monotherapy maintenance for up to 2 years.

The mean age was 57.5 in the GP2013 arm and 56.4 in the rituximab arm. Fifty-eight percent and 54% of patients, respectively, were female.

Fifty-seven percent of patients in the GP2013 arm and 56% in the rituximab arm had an ECOG performance status of 0. Forty percent and 39%, respectively, had a status of 1. Two percent and 4%, respectively, had a status of 2. (For the remaining 1% of patients in each arm, data on performance status were missing.)

Patients had an Ann Arbor stage of III—46% in the GP2013 arm and 43% in the GP2013 arm—or IV—54% in the GP2013 arm and 57% in the rituximab arm.

Fifty-six percent of patients in each arm were high-risk according to FLIPI. Thirty-four percent in the GP2013 arm and 33% in the rituximab arm were intermediate-risk. Ten percent and 11%, respectively, were low-risk.

Fourteen percent of patients in the GP2013 arm and 18% in the rituximab arm had bulky disease. Fifteen percent and 13%, respectively, had splenic involvement.

ORR and survival

The patients had a median follow-up of 23.8 months. The primary efficacy endpoint was equivalence in ORR, defined by a 95% confidence interval (CI) with a margin of ± 12% standard deviation.

The primary endpoint was met, as the ORR was 87% in the GP2013 arm and 88% in the rituximab arm, with a difference of –0.40% (95% CI –5.94%, 5.14%).

The complete response rate was 15% in the GP2013 arm and 13% in the rituximab arm. The partial response rates were 72% and 74%, respectively.

The median progression-free survival and overall survival have not been reached. However, the progression-free survival rate was 70% in the GP2013 arm and 76% in the rituximab arm (hazard ratio [HR]=1.31; 95% CI 1.02, 1.69).

The overall survival rate was 93% in the GP2013 arm and 91% in the rituximab arm (HR=0.77; 95% CI 0.49, 1.22).

Safety

During the combination phase, the incidence of AEs was 93% in the GP2013 arm and 91% in the rituximab arm. The incidence of serious AEs was 23% and 20%, respectively.

The most frequent AEs (in the GP2013 and rituximab arms, respectively) were neutropenia (26% and 30%), constipation (22% and 20%), and nausea (16% and 13%). The most common grade 3/4 AE was neutropenia (18% and 21%).

There were 11 deaths reported during the combination phase—4 in the GP2013 arm and 7 in the rituximab arm.

Three deaths in the GP2013 arm (sudden death, septic shock, and respiratory failure) and 2 deaths in the rituximab arm (multiple organ dysfunction syndrome and sepsis) were suspected to be related to study treatment.

During the maintenance phase, the incidence of AEs was 63% in the GP2013 arm and 57% in the rituximab arm. The incidence of serious AEs was 6% and 4%, respectively.

The most frequent AEs (in the GP2013 and rituximab arms, respectively) were infections and infestations (20% and 27%), neutropenia (10% and 6%), cough (9% and 6%), and upper respiratory tract infection (3% and 6%). The most common grade 3/4 AE was neutropenia (7% and 4%).

There were 4 deaths reported during the maintenance phase, 2 in each treatment arm.

Photo by Bill Branson

MADRID—The biosimilar GP2013 has demonstrated equivalence to its reference drug rituximab in patients with previously untreated, advanced-stage follicular lymphoma (FL), according to researchers.

Treatment with GP2013 plus cyclophosphamide, vincristine, and prednisone (CVP) produced a similar overall response rate (ORR) as rituximab plus CVP in the phase 3 ASSIST-FL trial.

Survival rates were also similar between the treatment arms, as were adverse events (AEs).

Results from this study were published in The Lancet Haematology and presented at ESMO 2017 Congress (abstract 994O).

The study was funded by Hexal AG, a Sandoz company (part of the Novartis group), which is marketing GP2013 as Rixathon in Europe.

Patients and treatment

The trial included 629 patients with previously untreated, advanced-stage FL. They were randomized to receive 8 cycles of GP2013-CVP (n=314) or rituximab-CVP (n=315). Responders in either arm could receive monotherapy maintenance for up to 2 years.

The mean age was 57.5 in the GP2013 arm and 56.4 in the rituximab arm. Fifty-eight percent and 54% of patients, respectively, were female.

Fifty-seven percent of patients in the GP2013 arm and 56% in the rituximab arm had an ECOG performance status of 0. Forty percent and 39%, respectively, had a status of 1. Two percent and 4%, respectively, had a status of 2. (For the remaining 1% of patients in each arm, data on performance status were missing.)

Patients had an Ann Arbor stage of III—46% in the GP2013 arm and 43% in the GP2013 arm—or IV—54% in the GP2013 arm and 57% in the rituximab arm.

Fifty-six percent of patients in each arm were high-risk according to FLIPI. Thirty-four percent in the GP2013 arm and 33% in the rituximab arm were intermediate-risk. Ten percent and 11%, respectively, were low-risk.

Fourteen percent of patients in the GP2013 arm and 18% in the rituximab arm had bulky disease. Fifteen percent and 13%, respectively, had splenic involvement.

ORR and survival

The patients had a median follow-up of 23.8 months. The primary efficacy endpoint was equivalence in ORR, defined by a 95% confidence interval (CI) with a margin of ± 12% standard deviation.

The primary endpoint was met, as the ORR was 87% in the GP2013 arm and 88% in the rituximab arm, with a difference of –0.40% (95% CI –5.94%, 5.14%).

The complete response rate was 15% in the GP2013 arm and 13% in the rituximab arm. The partial response rates were 72% and 74%, respectively.

The median progression-free survival and overall survival have not been reached. However, the progression-free survival rate was 70% in the GP2013 arm and 76% in the rituximab arm (hazard ratio [HR]=1.31; 95% CI 1.02, 1.69).

The overall survival rate was 93% in the GP2013 arm and 91% in the rituximab arm (HR=0.77; 95% CI 0.49, 1.22).

Safety

During the combination phase, the incidence of AEs was 93% in the GP2013 arm and 91% in the rituximab arm. The incidence of serious AEs was 23% and 20%, respectively.

The most frequent AEs (in the GP2013 and rituximab arms, respectively) were neutropenia (26% and 30%), constipation (22% and 20%), and nausea (16% and 13%). The most common grade 3/4 AE was neutropenia (18% and 21%).

There were 11 deaths reported during the combination phase—4 in the GP2013 arm and 7 in the rituximab arm.

Three deaths in the GP2013 arm (sudden death, septic shock, and respiratory failure) and 2 deaths in the rituximab arm (multiple organ dysfunction syndrome and sepsis) were suspected to be related to study treatment.

During the maintenance phase, the incidence of AEs was 63% in the GP2013 arm and 57% in the rituximab arm. The incidence of serious AEs was 6% and 4%, respectively.

The most frequent AEs (in the GP2013 and rituximab arms, respectively) were infections and infestations (20% and 27%), neutropenia (10% and 6%), cough (9% and 6%), and upper respiratory tract infection (3% and 6%). The most common grade 3/4 AE was neutropenia (7% and 4%).

There were 4 deaths reported during the maintenance phase, 2 in each treatment arm.

Photo courtesy of NIH

Adult survivors of childhood cancer have a greater cumulative burden of chronic health conditions than the general public, according to research published in The Lancet.

The study showed that, by age 50, childhood cancer survivors (CCSs) had experienced, on average, 17.1 chronic health conditions, and matched control subjects had experienced 9.2.

“The cumulative burden of chronic disease revealed in this analysis, along with the complexity and severity of chronic conditions some survivors experience, found childhood cancer survivors to be a vulnerable, medically complex population,” said study author Nickhill Bhakta, MD, of St. Jude Children’s Research Hospital in Memphis, Tennessee.

For this study, Dr Bhakta and his colleagues assessed the lifelong impact of 168 chronic health conditions—such as hepatic, thyroid, ocular, and reproductive disorders—on CCSs and control subjects.

The 3010 evaluable CCSs had survived 10 years or longer from their initial cancer diagnosis and were 18 years or older as of June 30, 2015. The 272 controls had no history of pediatric cancer and were matched to CCSs by age and sex.

At age 50, the cumulative incidence of chronic health conditions (of any grade) was 99.9% in CCSs and 96.0% in controls (P<0.0001). The cumulative incidence of grade 3 to 5 chronic health conditions was 96.0% and 84.9%, respectively (P<0.0001).

The cumulative burden for CCSs was 17.1 chronic health conditions, including 4.7 that were grade 3 to 5. For controls, the cumulative burden was 9.2 chronic health conditions, including 2.3 that were grade 3 to 5 (P<0.0001 for both comparisons).

The researchers said second neoplasms, spinal disorders, and pulmonary disease were major contributors to the excess total cumulative burden observed in CCSs. However, there was “notable heterogeneity” in burden according to the patients’ primary cancer diagnosis.

For instance, growth hormone deficiency was in the top 10th percentile of chronic health conditions for survivors of acute lymphoblastic leukemia but not for controls.

And pulmonary function deficits were in the top 10th percentile for survivors of acute myeloid leukemia and Hodgkin lymphoma but not for controls or survivors of acute lymphoblastic leukemia or non-Hodgkin lymphoma.

“This study found that the average childhood cancer survivor has a cumulative burden of chronic disease that requires a significant time investment by healthcare providers to disentangle and manage—time that community providers are unlikely to have,” Dr Bhakta said.

“The results suggest that childhood cancer survivors may benefit from the integrated, specialized healthcare delivery that is being tried for individuals infected with HIV or those with other complex, chronic health problems.”

Photo courtesy of NIH

Adult survivors of childhood cancer have a greater cumulative burden of chronic health conditions than the general public, according to research published in The Lancet.

The study showed that, by age 50, childhood cancer survivors (CCSs) had experienced, on average, 17.1 chronic health conditions, and matched control subjects had experienced 9.2.

“The cumulative burden of chronic disease revealed in this analysis, along with the complexity and severity of chronic conditions some survivors experience, found childhood cancer survivors to be a vulnerable, medically complex population,” said study author Nickhill Bhakta, MD, of St. Jude Children’s Research Hospital in Memphis, Tennessee.

For this study, Dr Bhakta and his colleagues assessed the lifelong impact of 168 chronic health conditions—such as hepatic, thyroid, ocular, and reproductive disorders—on CCSs and control subjects.

The 3010 evaluable CCSs had survived 10 years or longer from their initial cancer diagnosis and were 18 years or older as of June 30, 2015. The 272 controls had no history of pediatric cancer and were matched to CCSs by age and sex.

At age 50, the cumulative incidence of chronic health conditions (of any grade) was 99.9% in CCSs and 96.0% in controls (P<0.0001). The cumulative incidence of grade 3 to 5 chronic health conditions was 96.0% and 84.9%, respectively (P<0.0001).

The cumulative burden for CCSs was 17.1 chronic health conditions, including 4.7 that were grade 3 to 5. For controls, the cumulative burden was 9.2 chronic health conditions, including 2.3 that were grade 3 to 5 (P<0.0001 for both comparisons).

The researchers said second neoplasms, spinal disorders, and pulmonary disease were major contributors to the excess total cumulative burden observed in CCSs. However, there was “notable heterogeneity” in burden according to the patients’ primary cancer diagnosis.

For instance, growth hormone deficiency was in the top 10th percentile of chronic health conditions for survivors of acute lymphoblastic leukemia but not for controls.

And pulmonary function deficits were in the top 10th percentile for survivors of acute myeloid leukemia and Hodgkin lymphoma but not for controls or survivors of acute lymphoblastic leukemia or non-Hodgkin lymphoma.

“This study found that the average childhood cancer survivor has a cumulative burden of chronic disease that requires a significant time investment by healthcare providers to disentangle and manage—time that community providers are unlikely to have,” Dr Bhakta said.

“The results suggest that childhood cancer survivors may benefit from the integrated, specialized healthcare delivery that is being tried for individuals infected with HIV or those with other complex, chronic health problems.”

Photo courtesy of NIH

Adult survivors of childhood cancer have a greater cumulative burden of chronic health conditions than the general public, according to research published in The Lancet.

The study showed that, by age 50, childhood cancer survivors (CCSs) had experienced, on average, 17.1 chronic health conditions, and matched control subjects had experienced 9.2.

“The cumulative burden of chronic disease revealed in this analysis, along with the complexity and severity of chronic conditions some survivors experience, found childhood cancer survivors to be a vulnerable, medically complex population,” said study author Nickhill Bhakta, MD, of St. Jude Children’s Research Hospital in Memphis, Tennessee.

For this study, Dr Bhakta and his colleagues assessed the lifelong impact of 168 chronic health conditions—such as hepatic, thyroid, ocular, and reproductive disorders—on CCSs and control subjects.

The 3010 evaluable CCSs had survived 10 years or longer from their initial cancer diagnosis and were 18 years or older as of June 30, 2015. The 272 controls had no history of pediatric cancer and were matched to CCSs by age and sex.

At age 50, the cumulative incidence of chronic health conditions (of any grade) was 99.9% in CCSs and 96.0% in controls (P<0.0001). The cumulative incidence of grade 3 to 5 chronic health conditions was 96.0% and 84.9%, respectively (P<0.0001).

The cumulative burden for CCSs was 17.1 chronic health conditions, including 4.7 that were grade 3 to 5. For controls, the cumulative burden was 9.2 chronic health conditions, including 2.3 that were grade 3 to 5 (P<0.0001 for both comparisons).

The researchers said second neoplasms, spinal disorders, and pulmonary disease were major contributors to the excess total cumulative burden observed in CCSs. However, there was “notable heterogeneity” in burden according to the patients’ primary cancer diagnosis.

For instance, growth hormone deficiency was in the top 10th percentile of chronic health conditions for survivors of acute lymphoblastic leukemia but not for controls.

And pulmonary function deficits were in the top 10th percentile for survivors of acute myeloid leukemia and Hodgkin lymphoma but not for controls or survivors of acute lymphoblastic leukemia or non-Hodgkin lymphoma.

“This study found that the average childhood cancer survivor has a cumulative burden of chronic disease that requires a significant time investment by healthcare providers to disentangle and manage—time that community providers are unlikely to have,” Dr Bhakta said.

“The results suggest that childhood cancer survivors may benefit from the integrated, specialized healthcare delivery that is being tried for individuals infected with HIV or those with other complex, chronic health problems.”

Photo from AstraZeneca

The US Food and Drug Administration (FDA) has placed a partial clinical hold on 5 trials and a full clinical hold on 1 trial of the anti-PD-L1 antibody durvalumab (Imfinzi™).

In these trials, researchers are testing durvalumab in combination with immunomodulatory and chemotherapy agents in patients with multiple myeloma (MM) and lymphomas.

At present, no new patients can be enrolled in any of the 6 trials.

Patients enrolled in the trials on partial clinical hold can remain on treatment if they are receiving clinical benefit.

Patients enrolled in the trial on full clinical hold will discontinue the study treatment.

The FDA’s decision to place these trials on hold is related to risks identified in trials studying another anti-PD-1 agent, pembrolizumab, in MM patients.

Data from the pembrolizumab trials indicate the risks outweigh the benefits when PD-1/PD-L1 treatment is given to MM patients in combination with dexamethasone and pomalidomide or lenalidomide.

In addition, there may be an unfavorable risk-benefit ratio for MM patients receiving PD-1/PD-L1 treatments alone or in other combinations.

With this in mind, the FDA placed the MEDI4736-MM-002 trial on full clinical hold.

MEDI4736-MM-002 is a phase 1b study designed to determine the recommended dose and regimen of durvalumab in combination with lenalidomide, with and without low-dose dexamethasone, in patients with newly diagnosed MM.

The FDA also placed the following trials on partial clinical hold:

• MEDI4736-MM-001: A phase 1b study to determine the recommended dose and regimen of durvalumab either as monotherapy or in combination with pomalidomide, with or without low-dose dexamethasone, in patients with relapsed and refractory MM
• MEDI4736-MM-003: A phase 2 study to determine the safety and efficacy of the combination of durvalumab and daratumumab in patients with relapsed and refractory MM
• MEDI4736-MM-005: A phase 2 study to determine the efficacy of the combination of durvalumab plus daratumumab in patients with relapsed and refractory MM who have progressed while on a current treatment regimen containing daratumumab
• MEDI4736-NHL-001: A phase 1/2 study to assess the safety and tolerability of durvalumab as monotherapy and in combination therapy in patients with lymphomas, including chronic lymphocytic leukemia. The only arm in this trial for which enrollment is suspended is the arm with the durvalumab, lenalidomide, and rituximab combination.
• MEDI4736-DLBCL-001: A phase 2 study to evaluate the safety and clinical activity of durvalumab in combination with rituximab, cyclophosphamide, doxorubicin, vincristine, and prednisone (R-CHOP) or with lenalidomide plus R-CHOP in patients with previously untreated, high-risk diffuse large B-cell lymphoma.

The trials that will continue to enroll are:

• MEDI4736-MDS-001: A phase 2 study evaluating the efficacy and safety of subcutaneous azacitidine in combination with durvalumab in previously untreated patients with higher-risk myelodysplastic syndromes or in elderly (≥65 years) acute myeloid leukemia patients not eligible for hematopoietic stem cell transplant
• CC-486-MDS-006: A phase 2 study to evaluate the efficacy and safety of CC-486 alone or in combination with durvalumab in patients with myelodysplastic syndromes who fail to achieve an objective response to treatment with azacitidine for injection or decitabine.

Durvalumab is being developed by Celgene Corporation and MedImmune, the global biologics research and development arm of AstraZeneca.

The use of durvalumab in combination with other agents for the treatment of patients with hematologic malignancies is not approved by the FDA, and the safety and efficacy of those combinations has not been established.

Durvalumab has accelerated approval from the FDA to treat patients with locally advanced or metastatic urothelial carcinoma.

Photo from AstraZeneca

The US Food and Drug Administration (FDA) has placed a partial clinical hold on 5 trials and a full clinical hold on 1 trial of the anti-PD-L1 antibody durvalumab (Imfinzi™).

In these trials, researchers are testing durvalumab in combination with immunomodulatory and chemotherapy agents in patients with multiple myeloma (MM) and lymphomas.

At present, no new patients can be enrolled in any of the 6 trials.

Patients enrolled in the trials on partial clinical hold can remain on treatment if they are receiving clinical benefit.

Patients enrolled in the trial on full clinical hold will discontinue the study treatment.

The FDA’s decision to place these trials on hold is related to risks identified in trials studying another anti-PD-1 agent, pembrolizumab, in MM patients.

Data from the pembrolizumab trials indicate the risks outweigh the benefits when PD-1/PD-L1 treatment is given to MM patients in combination with dexamethasone and pomalidomide or lenalidomide.

In addition, there may be an unfavorable risk-benefit ratio for MM patients receiving PD-1/PD-L1 treatments alone or in other combinations.

With this in mind, the FDA placed the MEDI4736-MM-002 trial on full clinical hold.

MEDI4736-MM-002 is a phase 1b study designed to determine the recommended dose and regimen of durvalumab in combination with lenalidomide, with and without low-dose dexamethasone, in patients with newly diagnosed MM.

The FDA also placed the following trials on partial clinical hold:

• MEDI4736-MM-001: A phase 1b study to determine the recommended dose and regimen of durvalumab either as monotherapy or in combination with pomalidomide, with or without low-dose dexamethasone, in patients with relapsed and refractory MM
• MEDI4736-MM-003: A phase 2 study to determine the safety and efficacy of the combination of durvalumab and daratumumab in patients with relapsed and refractory MM
• MEDI4736-MM-005: A phase 2 study to determine the efficacy of the combination of durvalumab plus daratumumab in patients with relapsed and refractory MM who have progressed while on a current treatment regimen containing daratumumab
• MEDI4736-NHL-001: A phase 1/2 study to assess the safety and tolerability of durvalumab as monotherapy and in combination therapy in patients with lymphomas, including chronic lymphocytic leukemia. The only arm in this trial for which enrollment is suspended is the arm with the durvalumab, lenalidomide, and rituximab combination.
• MEDI4736-DLBCL-001: A phase 2 study to evaluate the safety and clinical activity of durvalumab in combination with rituximab, cyclophosphamide, doxorubicin, vincristine, and prednisone (R-CHOP) or with lenalidomide plus R-CHOP in patients with previously untreated, high-risk diffuse large B-cell lymphoma.

The trials that will continue to enroll are:

• MEDI4736-MDS-001: A phase 2 study evaluating the efficacy and safety of subcutaneous azacitidine in combination with durvalumab in previously untreated patients with higher-risk myelodysplastic syndromes or in elderly (≥65 years) acute myeloid leukemia patients not eligible for hematopoietic stem cell transplant
• CC-486-MDS-006: A phase 2 study to evaluate the efficacy and safety of CC-486 alone or in combination with durvalumab in patients with myelodysplastic syndromes who fail to achieve an objective response to treatment with azacitidine for injection or decitabine.

Durvalumab is being developed by Celgene Corporation and MedImmune, the global biologics research and development arm of AstraZeneca.

The use of durvalumab in combination with other agents for the treatment of patients with hematologic malignancies is not approved by the FDA, and the safety and efficacy of those combinations has not been established.

Durvalumab has accelerated approval from the FDA to treat patients with locally advanced or metastatic urothelial carcinoma.

Photo from AstraZeneca

The US Food and Drug Administration (FDA) has placed a partial clinical hold on 5 trials and a full clinical hold on 1 trial of the anti-PD-L1 antibody durvalumab (Imfinzi™).

In these trials, researchers are testing durvalumab in combination with immunomodulatory and chemotherapy agents in patients with multiple myeloma (MM) and lymphomas.

At present, no new patients can be enrolled in any of the 6 trials.

Patients enrolled in the trials on partial clinical hold can remain on treatment if they are receiving clinical benefit.

Patients enrolled in the trial on full clinical hold will discontinue the study treatment.

The FDA’s decision to place these trials on hold is related to risks identified in trials studying another anti-PD-1 agent, pembrolizumab, in MM patients.

Data from the pembrolizumab trials indicate the risks outweigh the benefits when PD-1/PD-L1 treatment is given to MM patients in combination with dexamethasone and pomalidomide or lenalidomide.

In addition, there may be an unfavorable risk-benefit ratio for MM patients receiving PD-1/PD-L1 treatments alone or in other combinations.

With this in mind, the FDA placed the MEDI4736-MM-002 trial on full clinical hold.

MEDI4736-MM-002 is a phase 1b study designed to determine the recommended dose and regimen of durvalumab in combination with lenalidomide, with and without low-dose dexamethasone, in patients with newly diagnosed MM.

The FDA also placed the following trials on partial clinical hold:

• MEDI4736-MM-001: A phase 1b study to determine the recommended dose and regimen of durvalumab either as monotherapy or in combination with pomalidomide, with or without low-dose dexamethasone, in patients with relapsed and refractory MM
• MEDI4736-MM-003: A phase 2 study to determine the safety and efficacy of the combination of durvalumab and daratumumab in patients with relapsed and refractory MM
• MEDI4736-MM-005: A phase 2 study to determine the efficacy of the combination of durvalumab plus daratumumab in patients with relapsed and refractory MM who have progressed while on a current treatment regimen containing daratumumab
• MEDI4736-NHL-001: A phase 1/2 study to assess the safety and tolerability of durvalumab as monotherapy and in combination therapy in patients with lymphomas, including chronic lymphocytic leukemia. The only arm in this trial for which enrollment is suspended is the arm with the durvalumab, lenalidomide, and rituximab combination.
• MEDI4736-DLBCL-001: A phase 2 study to evaluate the safety and clinical activity of durvalumab in combination with rituximab, cyclophosphamide, doxorubicin, vincristine, and prednisone (R-CHOP) or with lenalidomide plus R-CHOP in patients with previously untreated, high-risk diffuse large B-cell lymphoma.

The trials that will continue to enroll are:

• MEDI4736-MDS-001: A phase 2 study evaluating the efficacy and safety of subcutaneous azacitidine in combination with durvalumab in previously untreated patients with higher-risk myelodysplastic syndromes or in elderly (≥65 years) acute myeloid leukemia patients not eligible for hematopoietic stem cell transplant
• CC-486-MDS-006: A phase 2 study to evaluate the efficacy and safety of CC-486 alone or in combination with durvalumab in patients with myelodysplastic syndromes who fail to achieve an objective response to treatment with azacitidine for injection or decitabine.

Durvalumab is being developed by Celgene Corporation and MedImmune, the global biologics research and development arm of AstraZeneca.

The use of durvalumab in combination with other agents for the treatment of patients with hematologic malignancies is not approved by the FDA, and the safety and efficacy of those combinations has not been established.

Durvalumab has accelerated approval from the FDA to treat patients with locally advanced or metastatic urothelial carcinoma.

Fred Hutch News Service

Researchers say they have created nanoparticles loaded with messenger RNA (mRNA) that can give cells the ability to fight cancers and other diseases.

To use these freeze-dried nanocarriers, the team added water and introduced the resulting mixture to cells.

The nanocarriers were able to target T cells and hematopoietic stem cells (HSCs), delivering mRNA directly to the cells and triggering short-term gene expression.

The T cells were then able to fight leukemia and lymphoma in vitro and in vivo. And the HSCs demonstrated improvements in growth and regenerative potential.

Matthias Stephan, MD, PhD, of Fred Hutchinson Cancer Research Center in Seattle, Washington, and his colleagues described this research in Nature Communications.

“We developed a nanocarrier that binds and condenses synthetic mRNA and protects it from degradation,” Dr Stephan said.

The researchers surrounded the nanocarrier with a negatively charged envelope with a targeting ligand attached to the surface so the carrier homes and binds to a particular cell type. When this happens, the cell engulfs the carrier, which can be loaded with different types of manmade mRNA.

The researchers mixed the freeze-dried nanocarriers with water and samples of cells. Within 4 hours, cells started showing signs that editing had taken effect.

The team noted that boosters can be given if needed. And the nanocarriers are made from a dissolving biomaterial, so they are removed from the body like other cell waste.

Testing the carriers

Dr Stephan and his colleagues tested their nanocarriers in 3 ways.

First, the researchers tested nanoparticles carrying a gene-editing tool to T cells that snipped out their natural T-cell receptors and was paired with genes encoding a chimeric antigen receptor (CAR).

The resulting CAR T cells maintained their ability to proliferate and successfully eliminated leukemia cells.

Next, the researchers tested nanocarriers targeted to CAR T cells and containing foxo1 mRNA. This prompted the T cells to develop into a type of memory cell with enhanced antitumor activity.

The team found these CAR T cells induced “substantial disease regression” and prolonged survival in a mouse model of B-cell lymphoma.

Finally, the researchers tested nanocarriers targeted to HSCs. The carriers were equipped with mRNA that “induced key regulators of self-renewal,” accelerating the growth and regenerative potential of the HSCs in vitro.

Future possibilities

Dr Stephan and his colleagues noted that these nanocarriers are built on existing technology and can be used by individuals without knowledge of nanotechnology. Therefore, the team hopes the nanocarriers will be an off-the-shelf way for cell-therapy engineers to develop new approaches to treat diseases.

The researchers believe the nanocarriers could replace electroporation, a multistep cell-manufacturing technique that requires specialized equipment and clean rooms. The team noted that up to 60 times more cells survive the introduction of the nanocarriers than survive electroporation.

“You can imagine taking the nanoparticles, injecting them into a patient, and then you don’t have to culture cells at all anymore,” Dr Stephan said.

He is now looking for commercial partners to move the technology toward additional applications and into clinical trials. 

Fred Hutch News Service

Researchers say they have created nanoparticles loaded with messenger RNA (mRNA) that can give cells the ability to fight cancers and other diseases.

To use these freeze-dried nanocarriers, the team added water and introduced the resulting mixture to cells.

The nanocarriers were able to target T cells and hematopoietic stem cells (HSCs), delivering mRNA directly to the cells and triggering short-term gene expression.

The T cells were then able to fight leukemia and lymphoma in vitro and in vivo. And the HSCs demonstrated improvements in growth and regenerative potential.

Matthias Stephan, MD, PhD, of Fred Hutchinson Cancer Research Center in Seattle, Washington, and his colleagues described this research in Nature Communications.

“We developed a nanocarrier that binds and condenses synthetic mRNA and protects it from degradation,” Dr Stephan said.

The researchers surrounded the nanocarrier with a negatively charged envelope with a targeting ligand attached to the surface so the carrier homes and binds to a particular cell type. When this happens, the cell engulfs the carrier, which can be loaded with different types of manmade mRNA.

The researchers mixed the freeze-dried nanocarriers with water and samples of cells. Within 4 hours, cells started showing signs that editing had taken effect.

The team noted that boosters can be given if needed. And the nanocarriers are made from a dissolving biomaterial, so they are removed from the body like other cell waste.

Testing the carriers

Dr Stephan and his colleagues tested their nanocarriers in 3 ways.

First, the researchers tested nanoparticles carrying a gene-editing tool to T cells that snipped out their natural T-cell receptors and was paired with genes encoding a chimeric antigen receptor (CAR).

The resulting CAR T cells maintained their ability to proliferate and successfully eliminated leukemia cells.

Next, the researchers tested nanocarriers targeted to CAR T cells and containing foxo1 mRNA. This prompted the T cells to develop into a type of memory cell with enhanced antitumor activity.

The team found these CAR T cells induced “substantial disease regression” and prolonged survival in a mouse model of B-cell lymphoma.

Finally, the researchers tested nanocarriers targeted to HSCs. The carriers were equipped with mRNA that “induced key regulators of self-renewal,” accelerating the growth and regenerative potential of the HSCs in vitro.

Future possibilities

Dr Stephan and his colleagues noted that these nanocarriers are built on existing technology and can be used by individuals without knowledge of nanotechnology. Therefore, the team hopes the nanocarriers will be an off-the-shelf way for cell-therapy engineers to develop new approaches to treat diseases.

The researchers believe the nanocarriers could replace electroporation, a multistep cell-manufacturing technique that requires specialized equipment and clean rooms. The team noted that up to 60 times more cells survive the introduction of the nanocarriers than survive electroporation.

“You can imagine taking the nanoparticles, injecting them into a patient, and then you don’t have to culture cells at all anymore,” Dr Stephan said.

He is now looking for commercial partners to move the technology toward additional applications and into clinical trials. 

Fred Hutch News Service

Researchers say they have created nanoparticles loaded with messenger RNA (mRNA) that can give cells the ability to fight cancers and other diseases.

To use these freeze-dried nanocarriers, the team added water and introduced the resulting mixture to cells.

The nanocarriers were able to target T cells and hematopoietic stem cells (HSCs), delivering mRNA directly to the cells and triggering short-term gene expression.

The T cells were then able to fight leukemia and lymphoma in vitro and in vivo. And the HSCs demonstrated improvements in growth and regenerative potential.

Matthias Stephan, MD, PhD, of Fred Hutchinson Cancer Research Center in Seattle, Washington, and his colleagues described this research in Nature Communications.

“We developed a nanocarrier that binds and condenses synthetic mRNA and protects it from degradation,” Dr Stephan said.

The researchers surrounded the nanocarrier with a negatively charged envelope with a targeting ligand attached to the surface so the carrier homes and binds to a particular cell type. When this happens, the cell engulfs the carrier, which can be loaded with different types of manmade mRNA.

The researchers mixed the freeze-dried nanocarriers with water and samples of cells. Within 4 hours, cells started showing signs that editing had taken effect.

The team noted that boosters can be given if needed. And the nanocarriers are made from a dissolving biomaterial, so they are removed from the body like other cell waste.

Testing the carriers

Dr Stephan and his colleagues tested their nanocarriers in 3 ways.

First, the researchers tested nanoparticles carrying a gene-editing tool to T cells that snipped out their natural T-cell receptors and was paired with genes encoding a chimeric antigen receptor (CAR).

The resulting CAR T cells maintained their ability to proliferate and successfully eliminated leukemia cells.

Next, the researchers tested nanocarriers targeted to CAR T cells and containing foxo1 mRNA. This prompted the T cells to develop into a type of memory cell with enhanced antitumor activity.

The team found these CAR T cells induced “substantial disease regression” and prolonged survival in a mouse model of B-cell lymphoma.

Finally, the researchers tested nanocarriers targeted to HSCs. The carriers were equipped with mRNA that “induced key regulators of self-renewal,” accelerating the growth and regenerative potential of the HSCs in vitro.

Future possibilities

Dr Stephan and his colleagues noted that these nanocarriers are built on existing technology and can be used by individuals without knowledge of nanotechnology. Therefore, the team hopes the nanocarriers will be an off-the-shelf way for cell-therapy engineers to develop new approaches to treat diseases.

The researchers believe the nanocarriers could replace electroporation, a multistep cell-manufacturing technique that requires specialized equipment and clean rooms. The team noted that up to 60 times more cells survive the introduction of the nanocarriers than survive electroporation.

“You can imagine taking the nanoparticles, injecting them into a patient, and then you don’t have to culture cells at all anymore,” Dr Stephan said.

He is now looking for commercial partners to move the technology toward additional applications and into clinical trials. 

Micrograph showing DLBCL

Researchers have reported the first known case of central nervous system (CNS) lymphoma responding to chimeric antigen receptor (CAR) T-cell therapy.

The investigational CAR T-cell therapy JCAR017 induced complete remission of brain metastasis in a patient with refractory diffuse large B-cell lymphoma (DLBCL).

When a subcutaneous tumor began to recur 2 months after the patient received JCAR017 and a surgical biopsy was performed, the CAR T cells spontaneously re-expanded and the tumor again went into remission.

While the patient eventually relapsed and died more than a year after receiving JCAR017, the brain tumor never recurred.

“Brain involvement in DLBCL carries a grave prognosis, and the ability to induce a complete and durable response with conventional therapies is rare,” said Jeremy Abramson, MD, of Massachusetts General Hospital in Boston.

“In addition, all available CAR T-cell trials have excluded patients with central nervous system involvement. This result has implications not only for secondary DLBCL like this case but also for primary central nervous system lymphoma, for which treatment options are similarly limited after relapse and few patents are cured.”

Dr Abramson and his colleagues described this case in a letter to NEJM. The patient was involved in a trial of JCAR017, which was sponsored by Juno Therapeutics.

The patient was a 68-year-old woman with germinal center B-cell-like DLBCL with a BCL2 rearrangement and multiple copies of MYC and BCL6.

The patients’ disease was refractory to conventional chemotherapy and an 8/8 HLA-matched stem cell transplant. After she enrolled in a phase 1 trial of JCAR017, the patient was found to have a new lesion in the right temporal lobe of her brain.

One month after the patient received JCAR017—given after lymphodepletion with fludarabine and cyclophosphamide—imaging showed complete remission of the brain lesion.

The subcutaneous lesion that recurred 2 months later disappeared after the biopsy with no further treatment. Blood testing showed an expansion of CAR T cells that coincided with the tumor’s regression.

While re-expansion of CAR T cells has been reported in response to other immunotherapy drugs, this is the first report of such a response to a biopsy.

“Typically, the drugs we use to fight cancer and other diseases wear off over time,” Dr Abramson said. “This spontaneous re-expansion after biopsy highlights this therapy as something entirely different, a ‘living drug’ that can re-expand and proliferate in response to biologic stimuli.”

Micrograph showing DLBCL

Researchers have reported the first known case of central nervous system (CNS) lymphoma responding to chimeric antigen receptor (CAR) T-cell therapy.

The investigational CAR T-cell therapy JCAR017 induced complete remission of brain metastasis in a patient with refractory diffuse large B-cell lymphoma (DLBCL).

When a subcutaneous tumor began to recur 2 months after the patient received JCAR017 and a surgical biopsy was performed, the CAR T cells spontaneously re-expanded and the tumor again went into remission.

While the patient eventually relapsed and died more than a year after receiving JCAR017, the brain tumor never recurred.

“Brain involvement in DLBCL carries a grave prognosis, and the ability to induce a complete and durable response with conventional therapies is rare,” said Jeremy Abramson, MD, of Massachusetts General Hospital in Boston.

“In addition, all available CAR T-cell trials have excluded patients with central nervous system involvement. This result has implications not only for secondary DLBCL like this case but also for primary central nervous system lymphoma, for which treatment options are similarly limited after relapse and few patents are cured.”

Dr Abramson and his colleagues described this case in a letter to NEJM. The patient was involved in a trial of JCAR017, which was sponsored by Juno Therapeutics.

The patient was a 68-year-old woman with germinal center B-cell-like DLBCL with a BCL2 rearrangement and multiple copies of MYC and BCL6.

The patients’ disease was refractory to conventional chemotherapy and an 8/8 HLA-matched stem cell transplant. After she enrolled in a phase 1 trial of JCAR017, the patient was found to have a new lesion in the right temporal lobe of her brain.

One month after the patient received JCAR017—given after lymphodepletion with fludarabine and cyclophosphamide—imaging showed complete remission of the brain lesion.

The subcutaneous lesion that recurred 2 months later disappeared after the biopsy with no further treatment. Blood testing showed an expansion of CAR T cells that coincided with the tumor’s regression.

While re-expansion of CAR T cells has been reported in response to other immunotherapy drugs, this is the first report of such a response to a biopsy.

“Typically, the drugs we use to fight cancer and other diseases wear off over time,” Dr Abramson said. “This spontaneous re-expansion after biopsy highlights this therapy as something entirely different, a ‘living drug’ that can re-expand and proliferate in response to biologic stimuli.”

Micrograph showing DLBCL

Researchers have reported the first known case of central nervous system (CNS) lymphoma responding to chimeric antigen receptor (CAR) T-cell therapy.

The investigational CAR T-cell therapy JCAR017 induced complete remission of brain metastasis in a patient with refractory diffuse large B-cell lymphoma (DLBCL).

When a subcutaneous tumor began to recur 2 months after the patient received JCAR017 and a surgical biopsy was performed, the CAR T cells spontaneously re-expanded and the tumor again went into remission.

While the patient eventually relapsed and died more than a year after receiving JCAR017, the brain tumor never recurred.

“Brain involvement in DLBCL carries a grave prognosis, and the ability to induce a complete and durable response with conventional therapies is rare,” said Jeremy Abramson, MD, of Massachusetts General Hospital in Boston.

“In addition, all available CAR T-cell trials have excluded patients with central nervous system involvement. This result has implications not only for secondary DLBCL like this case but also for primary central nervous system lymphoma, for which treatment options are similarly limited after relapse and few patents are cured.”

Dr Abramson and his colleagues described this case in a letter to NEJM. The patient was involved in a trial of JCAR017, which was sponsored by Juno Therapeutics.

The patient was a 68-year-old woman with germinal center B-cell-like DLBCL with a BCL2 rearrangement and multiple copies of MYC and BCL6.

The patients’ disease was refractory to conventional chemotherapy and an 8/8 HLA-matched stem cell transplant. After she enrolled in a phase 1 trial of JCAR017, the patient was found to have a new lesion in the right temporal lobe of her brain.

One month after the patient received JCAR017—given after lymphodepletion with fludarabine and cyclophosphamide—imaging showed complete remission of the brain lesion.

The subcutaneous lesion that recurred 2 months later disappeared after the biopsy with no further treatment. Blood testing showed an expansion of CAR T cells that coincided with the tumor’s regression.

While re-expansion of CAR T cells has been reported in response to other immunotherapy drugs, this is the first report of such a response to a biopsy.

“Typically, the drugs we use to fight cancer and other diseases wear off over time,” Dr Abramson said. “This spontaneous re-expansion after biopsy highlights this therapy as something entirely different, a ‘living drug’ that can re-expand and proliferate in response to biologic stimuli.”

Follicular lymphoma

The US Food and Drug Administration (FDA) has granted priority review to a supplemental biologics license application (sBLA) for obinutuzumab (Gazyva®).

With this sBLA, Genentech is seeking approval for obinutuzumab to be used, first in combination with chemotherapy and then alone as maintenance, in patients with previously untreated follicular lymphoma (FL).

The FDA grants priority review to applications for products that may provide significant improvements in the treatment, diagnosis, or prevention of serious conditions.

The agency’s goal is to take action on a priority review application within 6 months of receiving it, rather than the standard 10 months.

The FDA plans to make a decision on the sBLA for obinutuzumab by December 23, 2017.

The sBLA is supported by results of the GALLIUM study, which were presented at the 2016 ASH Annual Meeting.

About obinutuzumab

Obinutuzumab is a glycoengineered, humanized, monoclonal antibody that selectively binds to the extracellular domain of the CD20 antigen on B cells.

The drug is FDA-approved for use in combination with chlorambucil to treat patients with previously untreated chronic lymphocytic leukemia.

Obinutuzumab is also approved to treat FL patients who relapse after, or are refractory to, a rituximab-containing regimen. In these patients, obinutuzumab is given first in combination with bendamustine and then alone as maintenance.

The full prescribing information for obinutuzumab is available at http://www.Gazyva.com.

About the GALLIUM study

GALLIUM enrolled 1401 patients with previously untreated, indolent non-Hodgkin lymphoma, including 1202 with FL.

Half of the FL patients (n=601) were randomized to receive obinutuzumab plus chemotherapy (followed by obinutuzumab maintenance for up to 2 years), and half were randomized to rituximab plus chemotherapy (followed by rituximab maintenance for up to 2 years).

The different chemotherapies used were CHOP (cyclophosphamide, doxorubicin, vincristine, and prednisolone), CVP (cyclophosphamide, vincristine, and prednisolone), and bendamustine.

Patients who received obinutuzumab had significantly better progression-free survival than patients who received rituximab. The 3-year progression-free survival rate was 73.3% in the rituximab arm and 80% in the obinutuzumab arm (hazard ratio [HR]=0.66, P=0.0012).

There was no significant difference between the treatment arms with regard to overall survival. The 3-year overall survival was 92.1% in the rituximab arm and 94% in the obinutuzumab arm (HR=0.75, P=0.21).

The overall incidence of adverse events (AEs) was 98.3% in the rituximab arm and 99.5% in the obinutuzumab arm. The incidence of serious AEs was 39.9% and 46.1%, respectively.

The incidence of grade 3 or higher AEs was higher among patients who received obinutuzumab.

Grade 3 or higher AEs occurring in at least 5% of patients in either arm (rituximab and obinutuzumab, respectively) included neutropenia (67.8% and 74.6%), leukopenia (37.9% and 43.9%), febrile neutropenia (4.9% and 6.9%), infections and infestations (3.7% and 6.7%), and thrombocytopenia (2.7% and 6.1%).

Follicular lymphoma

The US Food and Drug Administration (FDA) has granted priority review to a supplemental biologics license application (sBLA) for obinutuzumab (Gazyva®).

With this sBLA, Genentech is seeking approval for obinutuzumab to be used, first in combination with chemotherapy and then alone as maintenance, in patients with previously untreated follicular lymphoma (FL).

The FDA grants priority review to applications for products that may provide significant improvements in the treatment, diagnosis, or prevention of serious conditions.

The agency’s goal is to take action on a priority review application within 6 months of receiving it, rather than the standard 10 months.

The FDA plans to make a decision on the sBLA for obinutuzumab by December 23, 2017.

The sBLA is supported by results of the GALLIUM study, which were presented at the 2016 ASH Annual Meeting.

About obinutuzumab

Obinutuzumab is a glycoengineered, humanized, monoclonal antibody that selectively binds to the extracellular domain of the CD20 antigen on B cells.

The drug is FDA-approved for use in combination with chlorambucil to treat patients with previously untreated chronic lymphocytic leukemia.

Obinutuzumab is also approved to treat FL patients who relapse after, or are refractory to, a rituximab-containing regimen. In these patients, obinutuzumab is given first in combination with bendamustine and then alone as maintenance.

The full prescribing information for obinutuzumab is available at http://www.Gazyva.com.

About the GALLIUM study

GALLIUM enrolled 1401 patients with previously untreated, indolent non-Hodgkin lymphoma, including 1202 with FL.

Half of the FL patients (n=601) were randomized to receive obinutuzumab plus chemotherapy (followed by obinutuzumab maintenance for up to 2 years), and half were randomized to rituximab plus chemotherapy (followed by rituximab maintenance for up to 2 years).

The different chemotherapies used were CHOP (cyclophosphamide, doxorubicin, vincristine, and prednisolone), CVP (cyclophosphamide, vincristine, and prednisolone), and bendamustine.

Patients who received obinutuzumab had significantly better progression-free survival than patients who received rituximab. The 3-year progression-free survival rate was 73.3% in the rituximab arm and 80% in the obinutuzumab arm (hazard ratio [HR]=0.66, P=0.0012).

There was no significant difference between the treatment arms with regard to overall survival. The 3-year overall survival was 92.1% in the rituximab arm and 94% in the obinutuzumab arm (HR=0.75, P=0.21).

The overall incidence of adverse events (AEs) was 98.3% in the rituximab arm and 99.5% in the obinutuzumab arm. The incidence of serious AEs was 39.9% and 46.1%, respectively.

The incidence of grade 3 or higher AEs was higher among patients who received obinutuzumab.

Grade 3 or higher AEs occurring in at least 5% of patients in either arm (rituximab and obinutuzumab, respectively) included neutropenia (67.8% and 74.6%), leukopenia (37.9% and 43.9%), febrile neutropenia (4.9% and 6.9%), infections and infestations (3.7% and 6.7%), and thrombocytopenia (2.7% and 6.1%).

Follicular lymphoma

The US Food and Drug Administration (FDA) has granted priority review to a supplemental biologics license application (sBLA) for obinutuzumab (Gazyva®).

With this sBLA, Genentech is seeking approval for obinutuzumab to be used, first in combination with chemotherapy and then alone as maintenance, in patients with previously untreated follicular lymphoma (FL).

The FDA grants priority review to applications for products that may provide significant improvements in the treatment, diagnosis, or prevention of serious conditions.

The agency’s goal is to take action on a priority review application within 6 months of receiving it, rather than the standard 10 months.

The FDA plans to make a decision on the sBLA for obinutuzumab by December 23, 2017.

The sBLA is supported by results of the GALLIUM study, which were presented at the 2016 ASH Annual Meeting.

About obinutuzumab

Obinutuzumab is a glycoengineered, humanized, monoclonal antibody that selectively binds to the extracellular domain of the CD20 antigen on B cells.

The drug is FDA-approved for use in combination with chlorambucil to treat patients with previously untreated chronic lymphocytic leukemia.

Obinutuzumab is also approved to treat FL patients who relapse after, or are refractory to, a rituximab-containing regimen. In these patients, obinutuzumab is given first in combination with bendamustine and then alone as maintenance.

The full prescribing information for obinutuzumab is available at http://www.Gazyva.com.

About the GALLIUM study

GALLIUM enrolled 1401 patients with previously untreated, indolent non-Hodgkin lymphoma, including 1202 with FL.

Half of the FL patients (n=601) were randomized to receive obinutuzumab plus chemotherapy (followed by obinutuzumab maintenance for up to 2 years), and half were randomized to rituximab plus chemotherapy (followed by rituximab maintenance for up to 2 years).

The different chemotherapies used were CHOP (cyclophosphamide, doxorubicin, vincristine, and prednisolone), CVP (cyclophosphamide, vincristine, and prednisolone), and bendamustine.

Patients who received obinutuzumab had significantly better progression-free survival than patients who received rituximab. The 3-year progression-free survival rate was 73.3% in the rituximab arm and 80% in the obinutuzumab arm (hazard ratio [HR]=0.66, P=0.0012).

There was no significant difference between the treatment arms with regard to overall survival. The 3-year overall survival was 92.1% in the rituximab arm and 94% in the obinutuzumab arm (HR=0.75, P=0.21).

The overall incidence of adverse events (AEs) was 98.3% in the rituximab arm and 99.5% in the obinutuzumab arm. The incidence of serious AEs was 39.9% and 46.1%, respectively.

The incidence of grade 3 or higher AEs was higher among patients who received obinutuzumab.

Grade 3 or higher AEs occurring in at least 5% of patients in either arm (rituximab and obinutuzumab, respectively) included neutropenia (67.8% and 74.6%), leukopenia (37.9% and 43.9%), febrile neutropenia (4.9% and 6.9%), infections and infestations (3.7% and 6.7%), and thrombocytopenia (2.7% and 6.1%).

Photo by Bill Branson

New research suggests survivors of childhood cancer can incur high out-of-pocket medical costs into adulthood and may forgo healthcare to lessen this financial burden.

The study showed that childhood cancer survivors (CCSs) were more likely than non-CCSs to have out-of-pocket medical costs that were at least 10% of their annual income.

And these high costs were associated with delaying care or skipping it altogether.

These findings were published in the Journal of Clinical Oncology.

“Survivors who reported spending a higher percentage of their income on out-of-pocket medical costs were not only more likely to report financial burden, they also were at risk for undertaking behaviors potentially detrimental to their health in order to save money,” said study author Ryan Nipp, MD, of Massachusetts General Hospital Cancer Center in Boston.

“While studies have identified associations between financial burden and patients’ treatment outcomes, quality of life, and even survival among adults with cancer, as far as we know, this is the first to report these associations in survivors of childhood cancer.”

For this research, Dr Nipp and his colleagues surveyed participants in the Childhood Cancer Survivor Study. This included adults who had been treated for childhood cancers between 1970 and 1986 along with a control group of siblings not affected by cancer.

In 2011 and 2012, participants were asked to provide information about their health insurance, the out-of-pocket healthcare costs they paid during the previous year, and sociodemographic information such as annual income and employment status.

The researchers also asked participants whether medical costs posed a financial burden and, if so, what measures they had taken to deal with that burden.

Study population

The researchers received complete responses from 580 CCSs and 173 of their siblings without a history of cancer. The most common cancer diagnosis was leukemia (33%), followed by Hodgkin lymphoma (14%), while non-Hodgkin lymphoma was less common (7%).

CCSs were a mean of 30.2 years from diagnosis. Use of chemotherapy (77%), radiation (66%), and surgery (81%) were common. Few patients had cancer recurrence (13%) or second cancers (5%).

There was no significant difference between CCSs and their siblings with regard to age at the time of the survey (P=0.071), household income (P=0.053), education (P=0.345), health insurance status (P=0.317), or having at least 1 hospitalization in the past year (P=0.270).

However, CCSs were significantly more likely than siblings to have chronic health conditions (P<0.001). Forty percent of CCSs had severe or life-threatening chronic conditions, compared to 17% of siblings.

Seventy-six percent of CCSs and 80% of siblings were employed. Twenty-nine percent of CCSs and 39% of siblings had household incomes exceeding $100,000. Twelve percent of CCSs and 5% of siblings had household incomes below $20,000.

Ninety-one percent of CCSs and 93% of siblings were insured. Most subjects in both groups (81% and 87%, respectively) had employer-sponsored insurance.

Results

CCSs were significantly more likely than their siblings to have out-of-pocket medical costs that were at least 10% of their annual income—10% and 3%, respectively (P<0.001).

Among CCSs, those with higher out-of-pocket costs (≥10% vs <10% of income) were more likely to have household incomes below $50,000 (odds ratio [OR]=5.5) and to report being hospitalized in the past year (OR=2.3).

CCSs with a higher percentage of their income spent on out-of-pocket costs were also more likely to:

• Have problems paying their medical bills (OR=8.8)
• Report inability to pay for basic costs of living such as food, heat, or rent (OR=6.1)
• Defer healthcare for a medical problem (OR=3.1)
• Skip a test, treatment, or follow-up (OR=2.1)
• Consider filing for bankruptcy (OR=6.4).

“A more comprehensive understanding of the relationship between high out-of-pocket medical costs and the adverse effects of increased financial burden on cancer survivors could be instrumental in helping us identify those at risk for higher costs to help us address their financial challenges and improve health outcomes,” Dr Nipp said.

“It could also help inform policy changes to help meet the unique needs of cancer survivors and improve our understanding of how both higher costs and resulting financial burden influence patients’ approach to their medical care and decision-making.”

Photo by Bill Branson

New research suggests survivors of childhood cancer can incur high out-of-pocket medical costs into adulthood and may forgo healthcare to lessen this financial burden.

The study showed that childhood cancer survivors (CCSs) were more likely than non-CCSs to have out-of-pocket medical costs that were at least 10% of their annual income.

And these high costs were associated with delaying care or skipping it altogether.

These findings were published in the Journal of Clinical Oncology.

“Survivors who reported spending a higher percentage of their income on out-of-pocket medical costs were not only more likely to report financial burden, they also were at risk for undertaking behaviors potentially detrimental to their health in order to save money,” said study author Ryan Nipp, MD, of Massachusetts General Hospital Cancer Center in Boston.

“While studies have identified associations between financial burden and patients’ treatment outcomes, quality of life, and even survival among adults with cancer, as far as we know, this is the first to report these associations in survivors of childhood cancer.”

For this research, Dr Nipp and his colleagues surveyed participants in the Childhood Cancer Survivor Study. This included adults who had been treated for childhood cancers between 1970 and 1986 along with a control group of siblings not affected by cancer.

In 2011 and 2012, participants were asked to provide information about their health insurance, the out-of-pocket healthcare costs they paid during the previous year, and sociodemographic information such as annual income and employment status.

The researchers also asked participants whether medical costs posed a financial burden and, if so, what measures they had taken to deal with that burden.

Study population

The researchers received complete responses from 580 CCSs and 173 of their siblings without a history of cancer. The most common cancer diagnosis was leukemia (33%), followed by Hodgkin lymphoma (14%), while non-Hodgkin lymphoma was less common (7%).

CCSs were a mean of 30.2 years from diagnosis. Use of chemotherapy (77%), radiation (66%), and surgery (81%) were common. Few patients had cancer recurrence (13%) or second cancers (5%).

There was no significant difference between CCSs and their siblings with regard to age at the time of the survey (P=0.071), household income (P=0.053), education (P=0.345), health insurance status (P=0.317), or having at least 1 hospitalization in the past year (P=0.270).

However, CCSs were significantly more likely than siblings to have chronic health conditions (P<0.001). Forty percent of CCSs had severe or life-threatening chronic conditions, compared to 17% of siblings.

Seventy-six percent of CCSs and 80% of siblings were employed. Twenty-nine percent of CCSs and 39% of siblings had household incomes exceeding $100,000. Twelve percent of CCSs and 5% of siblings had household incomes below $20,000.

Ninety-one percent of CCSs and 93% of siblings were insured. Most subjects in both groups (81% and 87%, respectively) had employer-sponsored insurance.

Results

CCSs were significantly more likely than their siblings to have out-of-pocket medical costs that were at least 10% of their annual income—10% and 3%, respectively (P<0.001).

Among CCSs, those with higher out-of-pocket costs (≥10% vs <10% of income) were more likely to have household incomes below $50,000 (odds ratio [OR]=5.5) and to report being hospitalized in the past year (OR=2.3).

CCSs with a higher percentage of their income spent on out-of-pocket costs were also more likely to:

• Have problems paying their medical bills (OR=8.8)
• Report inability to pay for basic costs of living such as food, heat, or rent (OR=6.1)
• Defer healthcare for a medical problem (OR=3.1)
• Skip a test, treatment, or follow-up (OR=2.1)
• Consider filing for bankruptcy (OR=6.4).

“A more comprehensive understanding of the relationship between high out-of-pocket medical costs and the adverse effects of increased financial burden on cancer survivors could be instrumental in helping us identify those at risk for higher costs to help us address their financial challenges and improve health outcomes,” Dr Nipp said.

“It could also help inform policy changes to help meet the unique needs of cancer survivors and improve our understanding of how both higher costs and resulting financial burden influence patients’ approach to their medical care and decision-making.”

Photo by Bill Branson

New research suggests survivors of childhood cancer can incur high out-of-pocket medical costs into adulthood and may forgo healthcare to lessen this financial burden.

The study showed that childhood cancer survivors (CCSs) were more likely than non-CCSs to have out-of-pocket medical costs that were at least 10% of their annual income.

And these high costs were associated with delaying care or skipping it altogether.

These findings were published in the Journal of Clinical Oncology.

“Survivors who reported spending a higher percentage of their income on out-of-pocket medical costs were not only more likely to report financial burden, they also were at risk for undertaking behaviors potentially detrimental to their health in order to save money,” said study author Ryan Nipp, MD, of Massachusetts General Hospital Cancer Center in Boston.

“While studies have identified associations between financial burden and patients’ treatment outcomes, quality of life, and even survival among adults with cancer, as far as we know, this is the first to report these associations in survivors of childhood cancer.”

For this research, Dr Nipp and his colleagues surveyed participants in the Childhood Cancer Survivor Study. This included adults who had been treated for childhood cancers between 1970 and 1986 along with a control group of siblings not affected by cancer.

In 2011 and 2012, participants were asked to provide information about their health insurance, the out-of-pocket healthcare costs they paid during the previous year, and sociodemographic information such as annual income and employment status.

The researchers also asked participants whether medical costs posed a financial burden and, if so, what measures they had taken to deal with that burden.

Study population

The researchers received complete responses from 580 CCSs and 173 of their siblings without a history of cancer. The most common cancer diagnosis was leukemia (33%), followed by Hodgkin lymphoma (14%), while non-Hodgkin lymphoma was less common (7%).

CCSs were a mean of 30.2 years from diagnosis. Use of chemotherapy (77%), radiation (66%), and surgery (81%) were common. Few patients had cancer recurrence (13%) or second cancers (5%).

There was no significant difference between CCSs and their siblings with regard to age at the time of the survey (P=0.071), household income (P=0.053), education (P=0.345), health insurance status (P=0.317), or having at least 1 hospitalization in the past year (P=0.270).

However, CCSs were significantly more likely than siblings to have chronic health conditions (P<0.001). Forty percent of CCSs had severe or life-threatening chronic conditions, compared to 17% of siblings.

Seventy-six percent of CCSs and 80% of siblings were employed. Twenty-nine percent of CCSs and 39% of siblings had household incomes exceeding $100,000. Twelve percent of CCSs and 5% of siblings had household incomes below $20,000.

Ninety-one percent of CCSs and 93% of siblings were insured. Most subjects in both groups (81% and 87%, respectively) had employer-sponsored insurance.

Results

CCSs were significantly more likely than their siblings to have out-of-pocket medical costs that were at least 10% of their annual income—10% and 3%, respectively (P<0.001).

Among CCSs, those with higher out-of-pocket costs (≥10% vs <10% of income) were more likely to have household incomes below $50,000 (odds ratio [OR]=5.5) and to report being hospitalized in the past year (OR=2.3).

CCSs with a higher percentage of their income spent on out-of-pocket costs were also more likely to:

• Have problems paying their medical bills (OR=8.8)
• Report inability to pay for basic costs of living such as food, heat, or rent (OR=6.1)
• Defer healthcare for a medical problem (OR=3.1)
• Skip a test, treatment, or follow-up (OR=2.1)
• Consider filing for bankruptcy (OR=6.4).

“A more comprehensive understanding of the relationship between high out-of-pocket medical costs and the adverse effects of increased financial burden on cancer survivors could be instrumental in helping us identify those at risk for higher costs to help us address their financial challenges and improve health outcomes,” Dr Nipp said.

“It could also help inform policy changes to help meet the unique needs of cancer survivors and improve our understanding of how both higher costs and resulting financial burden influence patients’ approach to their medical care and decision-making.”

Photo by Bill Branson

The US Food and Drug Administration (FDA) has granted orphan drug designation to SENS-401 to be used for the prevention of platinum-induced ototoxicity in pediatric patients.

Platinum-based chemotherapies, particularly cisplatin, can induce severe hearing loss in cancer patients, but there is no pharmaceutical agent approved to treat this side effect.

“Hearing loss in pediatric oncology patients is one of the most frequent side effects of cisplatin treatment and may disable them for the rest of their lives,” said Nawal Ouzren, CEO of Sensorion, the company developing SENS-401.

“Based on its unique profile and the data generated to date, we believe SENS-401 has the potential to be a safe and effective treatment for this serious medical condition where a significant unmet need exists. As such, we look forward to working with the FDA and EMA [European Medicines Agency] to set up an IND [investigational new drug application] and design a phase 2 clinical trial in order to evaluate SENS-401 in this indication.”

About SENS-401

SENS-401 (R-azasetron besylate) is a small molecule intended to protect and preserve inner ear tissue when lesions cause progressive or sequelar hearing impairments. The drug can be taken orally or via an injection.

SENS-401 is one of the two enantiomer forms of SENS-218 (azasetron), a racemic molecule belonging to the family of setrons marketed in Asia under the name Serotone. Pharmacological and pharmacokinetic tests have shown a superior profile for SENS-401 compared with the other enantiomer or the racemic form.

Healthy subjects demonstrated a “very good clinical tolerance” to SENS-401 in a phase 1 study, according to Sensorion. The company is planning to launch a phase 2 trial of the drug for platinum-induced ototoxicity in 2018.

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.

Photo by Bill Branson

The US Food and Drug Administration (FDA) has granted orphan drug designation to SENS-401 to be used for the prevention of platinum-induced ototoxicity in pediatric patients.

Platinum-based chemotherapies, particularly cisplatin, can induce severe hearing loss in cancer patients, but there is no pharmaceutical agent approved to treat this side effect.

“Hearing loss in pediatric oncology patients is one of the most frequent side effects of cisplatin treatment and may disable them for the rest of their lives,” said Nawal Ouzren, CEO of Sensorion, the company developing SENS-401.

“Based on its unique profile and the data generated to date, we believe SENS-401 has the potential to be a safe and effective treatment for this serious medical condition where a significant unmet need exists. As such, we look forward to working with the FDA and EMA [European Medicines Agency] to set up an IND [investigational new drug application] and design a phase 2 clinical trial in order to evaluate SENS-401 in this indication.”

About SENS-401

SENS-401 (R-azasetron besylate) is a small molecule intended to protect and preserve inner ear tissue when lesions cause progressive or sequelar hearing impairments. The drug can be taken orally or via an injection.

SENS-401 is one of the two enantiomer forms of SENS-218 (azasetron), a racemic molecule belonging to the family of setrons marketed in Asia under the name Serotone. Pharmacological and pharmacokinetic tests have shown a superior profile for SENS-401 compared with the other enantiomer or the racemic form.

Healthy subjects demonstrated a “very good clinical tolerance” to SENS-401 in a phase 1 study, according to Sensorion. The company is planning to launch a phase 2 trial of the drug for platinum-induced ototoxicity in 2018.

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.

Photo by Bill Branson

The US Food and Drug Administration (FDA) has granted orphan drug designation to SENS-401 to be used for the prevention of platinum-induced ototoxicity in pediatric patients.

Platinum-based chemotherapies, particularly cisplatin, can induce severe hearing loss in cancer patients, but there is no pharmaceutical agent approved to treat this side effect.

“Hearing loss in pediatric oncology patients is one of the most frequent side effects of cisplatin treatment and may disable them for the rest of their lives,” said Nawal Ouzren, CEO of Sensorion, the company developing SENS-401.

“Based on its unique profile and the data generated to date, we believe SENS-401 has the potential to be a safe and effective treatment for this serious medical condition where a significant unmet need exists. As such, we look forward to working with the FDA and EMA [European Medicines Agency] to set up an IND [investigational new drug application] and design a phase 2 clinical trial in order to evaluate SENS-401 in this indication.”

About SENS-401

SENS-401 (R-azasetron besylate) is a small molecule intended to protect and preserve inner ear tissue when lesions cause progressive or sequelar hearing impairments. The drug can be taken orally or via an injection.

SENS-401 is one of the two enantiomer forms of SENS-218 (azasetron), a racemic molecule belonging to the family of setrons marketed in Asia under the name Serotone. Pharmacological and pharmacokinetic tests have shown a superior profile for SENS-401 compared with the other enantiomer or the racemic form.

Healthy subjects demonstrated a “very good clinical tolerance” to SENS-401 in a phase 1 study, according to Sensorion. The company is planning to launch a phase 2 trial of the drug for platinum-induced ototoxicity in 2018.

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.

Image by Ed Uthman

An investigational antibody has demonstrated activity against acute myeloid leukemia (AML), multiple myeloma (MM), and non-Hodgkin lymphoma (NHL), according to researchers.

PF-06747143 is a humanized CXCR4 immunoglobulin G1 (IgG1) antibody that binds to CXCR4 and inhibits both CXCL12-mediated signaling pathways and cell migration.

Whether given alone or in combination with chemotherapy, PF-06747143 demonstrated efficacy in mouse models of NHL, MM, and AML.

Treatment involving PF-06747143—alone or in combination—eradicated more cancer cells than did standard treatment options.

These results were published in Blood Advances. The research was sponsored by Pfizer, Inc., the company developing PF-06747143.

“One of the major limitations we see in treating blood cancers is the failure to clear cancer cells from the bone marrow,” said study author Flavia Pernasetti, PhD, of Pfizer Oncology Research and Development.

“Because the bone marrow allows the cancer cells to flourish, removing these cells is an essential step in treating these malignancies effectively.”

With this goal in mind, Dr Pernasetti and her colleagues looked to the mechanisms that control the movement of cells into the bone marrow (BM) in the first place—the chemokine receptor CXCR4 and its ligand CXCL12.

The researchers created PF-06747143, which attacks and kills cancer cells directly but also removes cancer cells from the BM so they can be killed by other treatments.

Results in NHL

The researchers first tested PF-06747143 in an NHL Ramos xenograft model. Mice received PF-06747143 or a control IgG1 antibody at 10 mg/kg on days 1 and 8.

PF-06747143 significantly inhibited tumor growth compared to the control antibody (P<0.0001). Seventy percent of PF-06747143-treated mice had tumor volumes below their initial size at the end of the study.

PF-06747143 produced a dose-dependent response that was sustained until the end of the study, even after treatment was stopped.

Results in MM

The researchers tested PF-06747143 in a disseminated MM model, in which the OPM2-Luc tumor cells were implanted intravenously and migrated spontaneously to the BM.

Mice received PF-06747143 or IgG1 control at 10 mg/kg weekly for 5 doses. Other mice received melphalan at 1 mg/kg twice a week for a total of 4 cycles.

On day 30, PF-06747143 had significantly inhibited BM tumor growth compared to the control antibody or melphalan (P<0.0001).

PF-06747143-treated mice also had a significant survival benefit. The median survival was 33.5 days for mice that received the control antibody and 36 days for mice treated with melphalan. However, there were no deaths in the PF-06747143-treated mice by day 50, which marked the end of the study (P<0.0001).

The researchers also tested PF-06747143 at a lower dose (1 mg/kg weekly for a total of 7 doses), both alone and in combination with bortezomib (0.5 mg/kg twice a week for a total of 4 cycles).

The median survival was 34 days in the control mice, 44 days in mice that received bortezomib alone, and 47 days in mice that received PF-06747143 alone. However, there were no deaths in the combination arm at day 51, which was the end of the study (P<0.0003).

Results in AML

The researchers tested PF-06747143 in an AML disseminated tumor model using MV4-11 cells.

They compared PF-06747143 (given at 0.1, 1, or 10 mg/kg weekly for 4 doses) to the chemotherapeutic agent daunorubicin (2 mg/kg on days 1, 3, and 5), the FLT3 inhibitor crenolanib (7.5 mg/kg twice a day, on days 11-15 and 25-29), and a control IgG1 antibody (10 mg/kg weekly for 4 doses).

PF-06747143 (at 10 mg/kg), daunorubicin, and crenolanib all significantly reduced the number of tumor cells in the peripheral blood and BM when compared with the control antibody (P<0.05).

PF-06746143 treatment (at 10 mg/kg) reduced the number of AML cells in the BM by 95.9%, while daunorubicin reduced them by 84.5% and crenolanib by 80.5%.

The median survival was 36 days for mice that received PF-06747143 at 0.1 mg/kg, 41 days for mice that received the control antibody, 47 days for mice that received PF-06747143 at 1 mg/kg, and 63 days for mice that received PF-06747143 at 10 mg/kg.

The researchers also found that PF-06747143 had a “strong combinatorial effect” with daunorubicin and cytarabine in a chemotherapy-resistant model of AML. The team noted that only 36% of BM cells are positive for CXCR4 in this model.

Treatment with PF-06747143 alone reduced the percentage of AML cells in the BM to 80%, combination daunorubicin and cytarabine reduced it to 27%, and combination PF-06747143, daunorubicin, and cytarabine reduced the percentage of AML cells in the BM to 0.3%.

“Our preliminary preclinical results are encouraging,” Dr Pernasetti said, “and we are very excited to see how our antibody fares in clinical testing.”

PF-06747143 is currently being evaluated in a phase 1 trial of AML patients.

Image by Ed Uthman

An investigational antibody has demonstrated activity against acute myeloid leukemia (AML), multiple myeloma (MM), and non-Hodgkin lymphoma (NHL), according to researchers.

PF-06747143 is a humanized CXCR4 immunoglobulin G1 (IgG1) antibody that binds to CXCR4 and inhibits both CXCL12-mediated signaling pathways and cell migration.

Whether given alone or in combination with chemotherapy, PF-06747143 demonstrated efficacy in mouse models of NHL, MM, and AML.

Treatment involving PF-06747143—alone or in combination—eradicated more cancer cells than did standard treatment options.

These results were published in Blood Advances. The research was sponsored by Pfizer, Inc., the company developing PF-06747143.

“One of the major limitations we see in treating blood cancers is the failure to clear cancer cells from the bone marrow,” said study author Flavia Pernasetti, PhD, of Pfizer Oncology Research and Development.

“Because the bone marrow allows the cancer cells to flourish, removing these cells is an essential step in treating these malignancies effectively.”

With this goal in mind, Dr Pernasetti and her colleagues looked to the mechanisms that control the movement of cells into the bone marrow (BM) in the first place—the chemokine receptor CXCR4 and its ligand CXCL12.

The researchers created PF-06747143, which attacks and kills cancer cells directly but also removes cancer cells from the BM so they can be killed by other treatments.

Results in NHL

The researchers first tested PF-06747143 in an NHL Ramos xenograft model. Mice received PF-06747143 or a control IgG1 antibody at 10 mg/kg on days 1 and 8.

PF-06747143 significantly inhibited tumor growth compared to the control antibody (P<0.0001). Seventy percent of PF-06747143-treated mice had tumor volumes below their initial size at the end of the study.

PF-06747143 produced a dose-dependent response that was sustained until the end of the study, even after treatment was stopped.

Results in MM

The researchers tested PF-06747143 in a disseminated MM model, in which the OPM2-Luc tumor cells were implanted intravenously and migrated spontaneously to the BM.

Mice received PF-06747143 or IgG1 control at 10 mg/kg weekly for 5 doses. Other mice received melphalan at 1 mg/kg twice a week for a total of 4 cycles.

On day 30, PF-06747143 had significantly inhibited BM tumor growth compared to the control antibody or melphalan (P<0.0001).

PF-06747143-treated mice also had a significant survival benefit. The median survival was 33.5 days for mice that received the control antibody and 36 days for mice treated with melphalan. However, there were no deaths in the PF-06747143-treated mice by day 50, which marked the end of the study (P<0.0001).

The researchers also tested PF-06747143 at a lower dose (1 mg/kg weekly for a total of 7 doses), both alone and in combination with bortezomib (0.5 mg/kg twice a week for a total of 4 cycles).

The median survival was 34 days in the control mice, 44 days in mice that received bortezomib alone, and 47 days in mice that received PF-06747143 alone. However, there were no deaths in the combination arm at day 51, which was the end of the study (P<0.0003).

Results in AML

The researchers tested PF-06747143 in an AML disseminated tumor model using MV4-11 cells.

They compared PF-06747143 (given at 0.1, 1, or 10 mg/kg weekly for 4 doses) to the chemotherapeutic agent daunorubicin (2 mg/kg on days 1, 3, and 5), the FLT3 inhibitor crenolanib (7.5 mg/kg twice a day, on days 11-15 and 25-29), and a control IgG1 antibody (10 mg/kg weekly for 4 doses).

PF-06747143 (at 10 mg/kg), daunorubicin, and crenolanib all significantly reduced the number of tumor cells in the peripheral blood and BM when compared with the control antibody (P<0.05).

PF-06746143 treatment (at 10 mg/kg) reduced the number of AML cells in the BM by 95.9%, while daunorubicin reduced them by 84.5% and crenolanib by 80.5%.

The median survival was 36 days for mice that received PF-06747143 at 0.1 mg/kg, 41 days for mice that received the control antibody, 47 days for mice that received PF-06747143 at 1 mg/kg, and 63 days for mice that received PF-06747143 at 10 mg/kg.

The researchers also found that PF-06747143 had a “strong combinatorial effect” with daunorubicin and cytarabine in a chemotherapy-resistant model of AML. The team noted that only 36% of BM cells are positive for CXCR4 in this model.

Treatment with PF-06747143 alone reduced the percentage of AML cells in the BM to 80%, combination daunorubicin and cytarabine reduced it to 27%, and combination PF-06747143, daunorubicin, and cytarabine reduced the percentage of AML cells in the BM to 0.3%.

“Our preliminary preclinical results are encouraging,” Dr Pernasetti said, “and we are very excited to see how our antibody fares in clinical testing.”

PF-06747143 is currently being evaluated in a phase 1 trial of AML patients.

Image by Ed Uthman

An investigational antibody has demonstrated activity against acute myeloid leukemia (AML), multiple myeloma (MM), and non-Hodgkin lymphoma (NHL), according to researchers.

PF-06747143 is a humanized CXCR4 immunoglobulin G1 (IgG1) antibody that binds to CXCR4 and inhibits both CXCL12-mediated signaling pathways and cell migration.

Whether given alone or in combination with chemotherapy, PF-06747143 demonstrated efficacy in mouse models of NHL, MM, and AML.

Treatment involving PF-06747143—alone or in combination—eradicated more cancer cells than did standard treatment options.

These results were published in Blood Advances. The research was sponsored by Pfizer, Inc., the company developing PF-06747143.

“One of the major limitations we see in treating blood cancers is the failure to clear cancer cells from the bone marrow,” said study author Flavia Pernasetti, PhD, of Pfizer Oncology Research and Development.

“Because the bone marrow allows the cancer cells to flourish, removing these cells is an essential step in treating these malignancies effectively.”

With this goal in mind, Dr Pernasetti and her colleagues looked to the mechanisms that control the movement of cells into the bone marrow (BM) in the first place—the chemokine receptor CXCR4 and its ligand CXCL12.

The researchers created PF-06747143, which attacks and kills cancer cells directly but also removes cancer cells from the BM so they can be killed by other treatments.

Results in NHL

The researchers first tested PF-06747143 in an NHL Ramos xenograft model. Mice received PF-06747143 or a control IgG1 antibody at 10 mg/kg on days 1 and 8.

PF-06747143 significantly inhibited tumor growth compared to the control antibody (P<0.0001). Seventy percent of PF-06747143-treated mice had tumor volumes below their initial size at the end of the study.

PF-06747143 produced a dose-dependent response that was sustained until the end of the study, even after treatment was stopped.

Results in MM

The researchers tested PF-06747143 in a disseminated MM model, in which the OPM2-Luc tumor cells were implanted intravenously and migrated spontaneously to the BM.

Mice received PF-06747143 or IgG1 control at 10 mg/kg weekly for 5 doses. Other mice received melphalan at 1 mg/kg twice a week for a total of 4 cycles.

On day 30, PF-06747143 had significantly inhibited BM tumor growth compared to the control antibody or melphalan (P<0.0001).

PF-06747143-treated mice also had a significant survival benefit. The median survival was 33.5 days for mice that received the control antibody and 36 days for mice treated with melphalan. However, there were no deaths in the PF-06747143-treated mice by day 50, which marked the end of the study (P<0.0001).

The researchers also tested PF-06747143 at a lower dose (1 mg/kg weekly for a total of 7 doses), both alone and in combination with bortezomib (0.5 mg/kg twice a week for a total of 4 cycles).

The median survival was 34 days in the control mice, 44 days in mice that received bortezomib alone, and 47 days in mice that received PF-06747143 alone. However, there were no deaths in the combination arm at day 51, which was the end of the study (P<0.0003).

Results in AML

The researchers tested PF-06747143 in an AML disseminated tumor model using MV4-11 cells.

They compared PF-06747143 (given at 0.1, 1, or 10 mg/kg weekly for 4 doses) to the chemotherapeutic agent daunorubicin (2 mg/kg on days 1, 3, and 5), the FLT3 inhibitor crenolanib (7.5 mg/kg twice a day, on days 11-15 and 25-29), and a control IgG1 antibody (10 mg/kg weekly for 4 doses).

PF-06747143 (at 10 mg/kg), daunorubicin, and crenolanib all significantly reduced the number of tumor cells in the peripheral blood and BM when compared with the control antibody (P<0.05).

PF-06746143 treatment (at 10 mg/kg) reduced the number of AML cells in the BM by 95.9%, while daunorubicin reduced them by 84.5% and crenolanib by 80.5%.

The median survival was 36 days for mice that received PF-06747143 at 0.1 mg/kg, 41 days for mice that received the control antibody, 47 days for mice that received PF-06747143 at 1 mg/kg, and 63 days for mice that received PF-06747143 at 10 mg/kg.

The researchers also found that PF-06747143 had a “strong combinatorial effect” with daunorubicin and cytarabine in a chemotherapy-resistant model of AML. The team noted that only 36% of BM cells are positive for CXCR4 in this model.

Treatment with PF-06747143 alone reduced the percentage of AML cells in the BM to 80%, combination daunorubicin and cytarabine reduced it to 27%, and combination PF-06747143, daunorubicin, and cytarabine reduced the percentage of AML cells in the BM to 0.3%.

“Our preliminary preclinical results are encouraging,” Dr Pernasetti said, “and we are very excited to see how our antibody fares in clinical testing.”

PF-06747143 is currently being evaluated in a phase 1 trial of AML patients.

Obinutuzumab with CHOP therapy did not improve progression-free survival, compared with rituximab plus CHOP, in patients with previously untreated diffuse large B-cell lymphoma (DLBCL), according to results from a phase 3 trial published in the Journal of Clinical Oncology. (2017 Aug 10. doi: 10.1200/JCO.2017.73.3402)

The findings suggest that obinutuzumab, a glycoengineered, type II, anti-CD20 monoclonal antibody, might not offer a benefit over standard treatment with rituximab, an anti-CD20 monoclonal antibody, when used with CHOP (cyclophosphamide, doxorubicin, vincristine, prednisone).

A total of 1,418 patients were enrolled at 207 centers in 29 countries in the GOYA trial and were randomly assigned to one regimen or the other. The mean duration of exposure to the drugs was 25 weeks for both. The progression-free survival was 69.6% for obinutuzumab-CHOP – also known as G-CHOP – and 66.9% for rituximab-CHOP, not a statistically significant difference, wrote Umberto Vitolo, MD, of University-Hospital Città della Salute e della Scienza, Torino, Italy, and his fellow investigators.

The rate of adverse events was similar between the two groups. The lack of superiority of obinutuzumab comes after findings of its superiority in untreated follicular lymphoma (FL) and chronic lymphocytic leukemia (CLL). The investigators suggested that this may be a sign that obinutuzumab’s efficacy is best seen in less aggressive disease types.

“Given the advantages of G-based therapy in patients with FL and CLL, the lack of benefit of G-CHOP in patients with DLBCL in the GOYA study was unexpected, and the reasons for it are unclear,” they wrote. “This lack of benefit might simply have resulted from the differences in biologic and clinical profiles between indolent lymphoproliferative diseases, such as FL and CLL, and aggressive ones, such as DLBCL.”

The study was sponsored by F. Hoffman-La Roche, the manufacturer of the two drugs, and had support from Fondazione Italiana Linfomi.

Obinutuzumab with CHOP therapy did not improve progression-free survival, compared with rituximab plus CHOP, in patients with previously untreated diffuse large B-cell lymphoma (DLBCL), according to results from a phase 3 trial published in the Journal of Clinical Oncology. (2017 Aug 10. doi: 10.1200/JCO.2017.73.3402)

The findings suggest that obinutuzumab, a glycoengineered, type II, anti-CD20 monoclonal antibody, might not offer a benefit over standard treatment with rituximab, an anti-CD20 monoclonal antibody, when used with CHOP (cyclophosphamide, doxorubicin, vincristine, prednisone).

A total of 1,418 patients were enrolled at 207 centers in 29 countries in the GOYA trial and were randomly assigned to one regimen or the other. The mean duration of exposure to the drugs was 25 weeks for both. The progression-free survival was 69.6% for obinutuzumab-CHOP – also known as G-CHOP – and 66.9% for rituximab-CHOP, not a statistically significant difference, wrote Umberto Vitolo, MD, of University-Hospital Città della Salute e della Scienza, Torino, Italy, and his fellow investigators.

The rate of adverse events was similar between the two groups. The lack of superiority of obinutuzumab comes after findings of its superiority in untreated follicular lymphoma (FL) and chronic lymphocytic leukemia (CLL). The investigators suggested that this may be a sign that obinutuzumab’s efficacy is best seen in less aggressive disease types.

“Given the advantages of G-based therapy in patients with FL and CLL, the lack of benefit of G-CHOP in patients with DLBCL in the GOYA study was unexpected, and the reasons for it are unclear,” they wrote. “This lack of benefit might simply have resulted from the differences in biologic and clinical profiles between indolent lymphoproliferative diseases, such as FL and CLL, and aggressive ones, such as DLBCL.”

The study was sponsored by F. Hoffman-La Roche, the manufacturer of the two drugs, and had support from Fondazione Italiana Linfomi.

Obinutuzumab with CHOP therapy did not improve progression-free survival, compared with rituximab plus CHOP, in patients with previously untreated diffuse large B-cell lymphoma (DLBCL), according to results from a phase 3 trial published in the Journal of Clinical Oncology. (2017 Aug 10. doi: 10.1200/JCO.2017.73.3402)

The findings suggest that obinutuzumab, a glycoengineered, type II, anti-CD20 monoclonal antibody, might not offer a benefit over standard treatment with rituximab, an anti-CD20 monoclonal antibody, when used with CHOP (cyclophosphamide, doxorubicin, vincristine, prednisone).

A total of 1,418 patients were enrolled at 207 centers in 29 countries in the GOYA trial and were randomly assigned to one regimen or the other. The mean duration of exposure to the drugs was 25 weeks for both. The progression-free survival was 69.6% for obinutuzumab-CHOP – also known as G-CHOP – and 66.9% for rituximab-CHOP, not a statistically significant difference, wrote Umberto Vitolo, MD, of University-Hospital Città della Salute e della Scienza, Torino, Italy, and his fellow investigators.

The rate of adverse events was similar between the two groups. The lack of superiority of obinutuzumab comes after findings of its superiority in untreated follicular lymphoma (FL) and chronic lymphocytic leukemia (CLL). The investigators suggested that this may be a sign that obinutuzumab’s efficacy is best seen in less aggressive disease types.

“Given the advantages of G-based therapy in patients with FL and CLL, the lack of benefit of G-CHOP in patients with DLBCL in the GOYA study was unexpected, and the reasons for it are unclear,” they wrote. “This lack of benefit might simply have resulted from the differences in biologic and clinical profiles between indolent lymphoproliferative diseases, such as FL and CLL, and aggressive ones, such as DLBCL.”

The study was sponsored by F. Hoffman-La Roche, the manufacturer of the two drugs, and had support from Fondazione Italiana Linfomi.