Aggressive Lymphomas

Photo by Daniel Sone

Researchers say hybrid capture sequencing is an accurate and sensitive method for identifying actionable gene mutations in lymphoid malignancies.

This method revealed potentially actionable mutations in 91% of patients studied, who had diffuse large B-cell lymphoma (DLBCL), follicular lymphoma (FL), or chronic lymphocytic leukemia (CLL).

The researchers therefore believe hybrid capture sequencing will bring the benefits of precision diagnosis and individualized therapy to patients with lymphoid malignancies.

“To realize the benefits of the most recent progress in cancer genomics, clinical implementation of precision medicine approaches is needed in the form of novel biomarker assays,” said study author Christian Steidl, MD, of the University of British Columbia in Vancouver, Canada.

“Fully implemented targeted sequencing-based assays in routine diagnostic pathology laboratories are currently lacking in lymphoid cancer care. Our findings demonstrate the feasibility and outline the clinical utility of integrating a lymphoma-specific pipeline into personalized cancer care.”

Dr Steidl and his colleagues reported these findings in The Journal of Molecular Diagnostics.

The researchers first compared capture hybridization and amplicon sequencing using samples from 8 patients with lymphoma. Fresh-frozen and formalin-fixed, paraffin-embedded tumor samples were sequenced using a panel of 20 lymphoma-specific genes.

The team found that capture hybridization provided “deep, more uniform coverage” and yielded “higher sensitivity for variant calling” than amplicon sequencing.

The researchers then developed a targeted sequencing pipeline using a 32-gene panel. The panel was developed with input from a group of 6 specialists who kept updating it based on the latest available information.

“This allows for continuous integration of additional gene features as our knowledge base improves,” Dr Steidl noted.

He and his colleagues then applied the hybrid capture sequencing assay and 32-gene panel to tissues from 219 patients—114 with FL, 76 with DLBCL, and 29 with CLL—who were treated in British Columbia between 2013 and 2016.

Results revealed at least one actionable mutation in 91% of the tumors. And the assay uncovered subtype-specific mutational profiles that were highly similar to published mutational profiles for FL, DLBCL, and CLL.

Furthermore, the assay had 93% concordance with whole-genome sequencing.

“Our developed assay harnesses the power of modern sequencing for clinical diagnostics purposes and potentially better deployment of novel treatments in lymphoid cancers,” Dr Steidl said. “We believe our study will help establish evidence-based approaches to decision making in lymphoid cancer care.”

“The next steps are to implement sequencing-based biomarker assays, such as reported in our study, in accredited pathology laboratories. Toward the goal of biomarker-driven clinical decision making, testing of potentially predictive biomarker assays is needed alongside clinical trials investigating novel cancer therapeutics.”

Photo by Daniel Sone

Researchers say hybrid capture sequencing is an accurate and sensitive method for identifying actionable gene mutations in lymphoid malignancies.

This method revealed potentially actionable mutations in 91% of patients studied, who had diffuse large B-cell lymphoma (DLBCL), follicular lymphoma (FL), or chronic lymphocytic leukemia (CLL).

The researchers therefore believe hybrid capture sequencing will bring the benefits of precision diagnosis and individualized therapy to patients with lymphoid malignancies.

“To realize the benefits of the most recent progress in cancer genomics, clinical implementation of precision medicine approaches is needed in the form of novel biomarker assays,” said study author Christian Steidl, MD, of the University of British Columbia in Vancouver, Canada.

“Fully implemented targeted sequencing-based assays in routine diagnostic pathology laboratories are currently lacking in lymphoid cancer care. Our findings demonstrate the feasibility and outline the clinical utility of integrating a lymphoma-specific pipeline into personalized cancer care.”

Dr Steidl and his colleagues reported these findings in The Journal of Molecular Diagnostics.

The researchers first compared capture hybridization and amplicon sequencing using samples from 8 patients with lymphoma. Fresh-frozen and formalin-fixed, paraffin-embedded tumor samples were sequenced using a panel of 20 lymphoma-specific genes.

The team found that capture hybridization provided “deep, more uniform coverage” and yielded “higher sensitivity for variant calling” than amplicon sequencing.

The researchers then developed a targeted sequencing pipeline using a 32-gene panel. The panel was developed with input from a group of 6 specialists who kept updating it based on the latest available information.

“This allows for continuous integration of additional gene features as our knowledge base improves,” Dr Steidl noted.

He and his colleagues then applied the hybrid capture sequencing assay and 32-gene panel to tissues from 219 patients—114 with FL, 76 with DLBCL, and 29 with CLL—who were treated in British Columbia between 2013 and 2016.

Results revealed at least one actionable mutation in 91% of the tumors. And the assay uncovered subtype-specific mutational profiles that were highly similar to published mutational profiles for FL, DLBCL, and CLL.

Furthermore, the assay had 93% concordance with whole-genome sequencing.

“Our developed assay harnesses the power of modern sequencing for clinical diagnostics purposes and potentially better deployment of novel treatments in lymphoid cancers,” Dr Steidl said. “We believe our study will help establish evidence-based approaches to decision making in lymphoid cancer care.”

“The next steps are to implement sequencing-based biomarker assays, such as reported in our study, in accredited pathology laboratories. Toward the goal of biomarker-driven clinical decision making, testing of potentially predictive biomarker assays is needed alongside clinical trials investigating novel cancer therapeutics.”

Photo by Daniel Sone

Researchers say hybrid capture sequencing is an accurate and sensitive method for identifying actionable gene mutations in lymphoid malignancies.

This method revealed potentially actionable mutations in 91% of patients studied, who had diffuse large B-cell lymphoma (DLBCL), follicular lymphoma (FL), or chronic lymphocytic leukemia (CLL).

The researchers therefore believe hybrid capture sequencing will bring the benefits of precision diagnosis and individualized therapy to patients with lymphoid malignancies.

“To realize the benefits of the most recent progress in cancer genomics, clinical implementation of precision medicine approaches is needed in the form of novel biomarker assays,” said study author Christian Steidl, MD, of the University of British Columbia in Vancouver, Canada.

“Fully implemented targeted sequencing-based assays in routine diagnostic pathology laboratories are currently lacking in lymphoid cancer care. Our findings demonstrate the feasibility and outline the clinical utility of integrating a lymphoma-specific pipeline into personalized cancer care.”

Dr Steidl and his colleagues reported these findings in The Journal of Molecular Diagnostics.

The researchers first compared capture hybridization and amplicon sequencing using samples from 8 patients with lymphoma. Fresh-frozen and formalin-fixed, paraffin-embedded tumor samples were sequenced using a panel of 20 lymphoma-specific genes.

The team found that capture hybridization provided “deep, more uniform coverage” and yielded “higher sensitivity for variant calling” than amplicon sequencing.

The researchers then developed a targeted sequencing pipeline using a 32-gene panel. The panel was developed with input from a group of 6 specialists who kept updating it based on the latest available information.

“This allows for continuous integration of additional gene features as our knowledge base improves,” Dr Steidl noted.

He and his colleagues then applied the hybrid capture sequencing assay and 32-gene panel to tissues from 219 patients—114 with FL, 76 with DLBCL, and 29 with CLL—who were treated in British Columbia between 2013 and 2016.

Results revealed at least one actionable mutation in 91% of the tumors. And the assay uncovered subtype-specific mutational profiles that were highly similar to published mutational profiles for FL, DLBCL, and CLL.

Furthermore, the assay had 93% concordance with whole-genome sequencing.

“Our developed assay harnesses the power of modern sequencing for clinical diagnostics purposes and potentially better deployment of novel treatments in lymphoid cancers,” Dr Steidl said. “We believe our study will help establish evidence-based approaches to decision making in lymphoid cancer care.”

“The next steps are to implement sequencing-based biomarker assays, such as reported in our study, in accredited pathology laboratories. Toward the goal of biomarker-driven clinical decision making, testing of potentially predictive biomarker assays is needed alongside clinical trials investigating novel cancer therapeutics.”

Mortality from non-Hodgkin lymphoma is expected to be about 6.1 per 100,000 population in 2018, with the highest rate in Maine and West Virginia and the lowest in Utah.

Approximately 19,910 deaths from non-Hodgkin lymphoma (NHL) are predicted for the year in the United States by the American Cancer Society (ACS) in its Cancer Facts & Figures 2018, based on analysis of 2001-2015 data from the National Center for Health Statistics. That figure is down from the 20,140 predicted for 2017, as the trend in the death rate since 2006 has been a decline of about 2% per year.

[email protected]

Mortality from non-Hodgkin lymphoma is expected to be about 6.1 per 100,000 population in 2018, with the highest rate in Maine and West Virginia and the lowest in Utah.

Approximately 19,910 deaths from non-Hodgkin lymphoma (NHL) are predicted for the year in the United States by the American Cancer Society (ACS) in its Cancer Facts & Figures 2018, based on analysis of 2001-2015 data from the National Center for Health Statistics. That figure is down from the 20,140 predicted for 2017, as the trend in the death rate since 2006 has been a decline of about 2% per year.

[email protected]

Mortality from non-Hodgkin lymphoma is expected to be about 6.1 per 100,000 population in 2018, with the highest rate in Maine and West Virginia and the lowest in Utah.

Approximately 19,910 deaths from non-Hodgkin lymphoma (NHL) are predicted for the year in the United States by the American Cancer Society (ACS) in its Cancer Facts & Figures 2018, based on analysis of 2001-2015 data from the National Center for Health Statistics. That figure is down from the 20,140 predicted for 2017, as the trend in the death rate since 2006 has been a decline of about 2% per year.

[email protected]

Photo by Larry Young

LA JOLLA, CA—A 2-drug combination has demonstrated preferential activity in T-cell lymphomas over B-cell lymphomas, according to researchers.

In a small, phase 1/2 study, treatment with oral 5-azacitidine and romidepsin produced a higher overall response rate (ORR) and prolonged progression-free survival (PFS) in patients with T-cell lymphomas.

“In a very limited sample, we’ve definitely observed exquisite activity of the combination in patients with T-cell lymphoma compared to all other subtypes,” said Lorenzo Falchi, MD, of Columbia University Medical Center in New York, New York.

Dr Falchi presented these results at the 10th Annual T-cell Lymphoma Forum.

The research was funded by the Leukemia and Lymphoma Society, the Lymphoma Research Fund at Columbia University, and Celgene.

The phase 1 portion of this study included patients with previously treated non-Hodgkin lymphoma (NHL) or Hodgkin lymphoma. The phase 2 portion included only patients with T-cell lymphomas, newly diagnosed or previously treated.

Thirty-three patients were enrolled—12 with Hodgkin lymphoma, 8 with B-cell NHL, and 13 with T-cell NHL.

The patients’ median age was 54 (range, 23-79). Fifty-seven percent (n=19) were male. Sixty-one percent of patients were non-Hispanic white (n=20), 24% (n=8) were black, and 12% (n=4) were Asian.

“This was a very heavily pretreated patient population,” Dr Falchi noted. “I’d like to emphasize that the median number of prior treatments is 5 [range, 0-15].”

“Over half of patients had had stem cell transplantation [17 autologous and 5 allogeneic]. And, if you look at the subtypes by histology, all patients, pretty much, at some point, received all the standard chemotherapy or treatment approaches that are typically used for that subtype.”

Treatment

Patients were divided into 7 dosing cohorts. Azacitidine doses ranged from 100 mg to 300 mg on days 1-14 or days 1-21 per cycle.

Romidepsin doses ranged from 10 mg/m² to 14 mg/m². The drug was given on days 8 and 15 every 21 or 28 days, or it was given on days 8, 15, and 22 every 35 days.

There were 2 dose-limiting toxicities (DLTs) in cohort 2—grade 3 thrombocytopenia and grade 3 pleural effusion. In this cohort, 3 patients received azacitidine at 200 mg on days 1-14 plus romidepsin at 10 mg/m² on days 8 and 15 every 21 days.

There were 3 DLTs in cohort 7—2 cases of grade 4 neutropenia and 1 case of grade 3 thrombocytopenia. In this cohort, 5 patients received azacitidine at 300 mg on days 1 to 21 plus romidepsin at 14 mg/m² on days 8, 15, and 22 every 35 days.

Because of the DLTs in cohort 7, cohort 6 was chosen as the maximum tolerated dose. In cohort 6, 3 patients received azacitidine at 300 mg on days 1-14 plus romidepsin at 14 mg/m² on days 8, 15, and 22 every 35 days.

Patients in the expansion cohort received treatment at the maximum tolerated dose. This cohort included 7 patients with T-cell lymphoma.

Safety

Treatment-emergent adverse events occurring in at least 5% of patients included:

• Anemia—3% grade 3
• Anorexia—9% grade 1
• Back pain—6% grade 2
• Constipation—6% grade 1
• Cough—9% grade 1
• Depression—3% grade 1 and 2
• Diarrhea—15% grade 1 and 6% grade 2
• Dyspnea—3% grade 1 and 2
• Fatigue—21% grade 1, 9% grade 2, and 3% grade 3
• Febrile neutropenia—3% grade 3 and 4
• Fever—6% grade 1 and 3% grade 2
• General disorders and administration site conditions—15% grade 1
• Hyperglycemia—3% grade 3
• Hypokalemia—6% grade 1
• Hypotension—3% grade 3
• Insomnia—6% grade 1
• Oral mucositis—9% grade 1 and 3% grade 2
• Nausea—18% grade 1, 27% grade 2, and 3% grade 3
• Neutrophil count decrease—3% grade 3 and 4
• Pain—3% grade 1 and 6% grade 2
• Pain of skin—3% grade 1 and 2
• Platelet count decrease—6% grade 2, 9% grade 3, and 6% grade 4
• Urinary tract infection—3% grade 3
• Vomiting—18% grade 1 and 21% grade 2.

Efficacy

Twenty-eight patients were evaluable for efficacy. The ORR for these patients was 36% (n=10).

The complete response (CR) rate was 22% (n=6), and the partial response (PR) rate was 14% (n=4). Twenty-five percent of patients (n=7) had stable disease, and 39% (n=11) progressed.

Dr Falchi noted that the ORR was “much higher” in patients with T-cell lymphoma than in those with B-cell lymphoma—80% (n=8) and 11% (n=2), respectively.

The CR rates were 50% (n=5) in T-cell lymphoma patients and 5.5% (n=1) in B-cell patients. PR rates were 30% (n=3) and 5.5% (n=1), respectively. Thirty-nine percent (n=7) of B-cell patients had stable disease, but none of the T-cell patients did.

“Patients with non-T-cell lymphoma were much more likely to progress on treatment,” Dr Falchi noted. “Half of them did so [n=9].”

This is in comparison to the 20% of T-cell lymphoma patients who progressed on treatment (n=2).

Disease subtypes for complete responders included transformed follicular lymphoma (n=1), T-lymphoblastic lymphoma (n=1), adult T-cell leukemia/lymphoma (n=1), extranodal NK/T-cell lymphoma (n=1), and angioimmunoblastic T-cell lymphoma (n=2).

Partial responders had follicular lymphoma (n=1), cutaneous peripheral T-cell lymphoma (n=1), cutaneous anaplastic large-cell lymphoma (n=1), and angioimmunoblastic T-cell lymphoma (n=1).

The 2 responders with B-cell lymphoma (1 CR and 1 PR) ultimately progressed and died.

Of the 8 responders with T-cell lymphoma, 3 have an ongoing CR, and 2 of these patients proceeded to transplant.

One T-cell patient who achieved a CR and proceeded to transplant was lost to follow-up. Another died after transplant.

Two T-cell patients who achieved a PR progressed and died. And 1 patient has an ongoing PR.

In total, 75% of patients (n=21) progressed. The median PFS for the entire study cohort was 3.6 months (range, 1.5-5.7).

The median PFS was 2.2 months (range, 1.1-3.2) for patients with B-cell lymphomas and was not reached for the T-cell lymphoma patients.

Eighty-nine percent of B-cell patients progressed (n=16), as did 40% of T-cell patients (n=4).

Dr Falchi and his colleagues are now conducting studies to correlate the pharmacokinetics of azacitidine-romidepsin with genome-wide methylation and correlate TET2, IDH2, and DNMT3A mutation status with clinical response.

Photo by Larry Young

LA JOLLA, CA—A 2-drug combination has demonstrated preferential activity in T-cell lymphomas over B-cell lymphomas, according to researchers.

In a small, phase 1/2 study, treatment with oral 5-azacitidine and romidepsin produced a higher overall response rate (ORR) and prolonged progression-free survival (PFS) in patients with T-cell lymphomas.

“In a very limited sample, we’ve definitely observed exquisite activity of the combination in patients with T-cell lymphoma compared to all other subtypes,” said Lorenzo Falchi, MD, of Columbia University Medical Center in New York, New York.

Dr Falchi presented these results at the 10th Annual T-cell Lymphoma Forum.

The research was funded by the Leukemia and Lymphoma Society, the Lymphoma Research Fund at Columbia University, and Celgene.

The phase 1 portion of this study included patients with previously treated non-Hodgkin lymphoma (NHL) or Hodgkin lymphoma. The phase 2 portion included only patients with T-cell lymphomas, newly diagnosed or previously treated.

Thirty-three patients were enrolled—12 with Hodgkin lymphoma, 8 with B-cell NHL, and 13 with T-cell NHL.

The patients’ median age was 54 (range, 23-79). Fifty-seven percent (n=19) were male. Sixty-one percent of patients were non-Hispanic white (n=20), 24% (n=8) were black, and 12% (n=4) were Asian.

“This was a very heavily pretreated patient population,” Dr Falchi noted. “I’d like to emphasize that the median number of prior treatments is 5 [range, 0-15].”

“Over half of patients had had stem cell transplantation [17 autologous and 5 allogeneic]. And, if you look at the subtypes by histology, all patients, pretty much, at some point, received all the standard chemotherapy or treatment approaches that are typically used for that subtype.”

Treatment

Patients were divided into 7 dosing cohorts. Azacitidine doses ranged from 100 mg to 300 mg on days 1-14 or days 1-21 per cycle.

Romidepsin doses ranged from 10 mg/m² to 14 mg/m². The drug was given on days 8 and 15 every 21 or 28 days, or it was given on days 8, 15, and 22 every 35 days.

There were 2 dose-limiting toxicities (DLTs) in cohort 2—grade 3 thrombocytopenia and grade 3 pleural effusion. In this cohort, 3 patients received azacitidine at 200 mg on days 1-14 plus romidepsin at 10 mg/m² on days 8 and 15 every 21 days.

There were 3 DLTs in cohort 7—2 cases of grade 4 neutropenia and 1 case of grade 3 thrombocytopenia. In this cohort, 5 patients received azacitidine at 300 mg on days 1 to 21 plus romidepsin at 14 mg/m² on days 8, 15, and 22 every 35 days.

Because of the DLTs in cohort 7, cohort 6 was chosen as the maximum tolerated dose. In cohort 6, 3 patients received azacitidine at 300 mg on days 1-14 plus romidepsin at 14 mg/m² on days 8, 15, and 22 every 35 days.

Patients in the expansion cohort received treatment at the maximum tolerated dose. This cohort included 7 patients with T-cell lymphoma.

Safety

Treatment-emergent adverse events occurring in at least 5% of patients included:

• Anemia—3% grade 3
• Anorexia—9% grade 1
• Back pain—6% grade 2
• Constipation—6% grade 1
• Cough—9% grade 1
• Depression—3% grade 1 and 2
• Diarrhea—15% grade 1 and 6% grade 2
• Dyspnea—3% grade 1 and 2
• Fatigue—21% grade 1, 9% grade 2, and 3% grade 3
• Febrile neutropenia—3% grade 3 and 4
• Fever—6% grade 1 and 3% grade 2
• General disorders and administration site conditions—15% grade 1
• Hyperglycemia—3% grade 3
• Hypokalemia—6% grade 1
• Hypotension—3% grade 3
• Insomnia—6% grade 1
• Oral mucositis—9% grade 1 and 3% grade 2
• Nausea—18% grade 1, 27% grade 2, and 3% grade 3
• Neutrophil count decrease—3% grade 3 and 4
• Pain—3% grade 1 and 6% grade 2
• Pain of skin—3% grade 1 and 2
• Platelet count decrease—6% grade 2, 9% grade 3, and 6% grade 4
• Urinary tract infection—3% grade 3
• Vomiting—18% grade 1 and 21% grade 2.

Efficacy

Twenty-eight patients were evaluable for efficacy. The ORR for these patients was 36% (n=10).

The complete response (CR) rate was 22% (n=6), and the partial response (PR) rate was 14% (n=4). Twenty-five percent of patients (n=7) had stable disease, and 39% (n=11) progressed.

Dr Falchi noted that the ORR was “much higher” in patients with T-cell lymphoma than in those with B-cell lymphoma—80% (n=8) and 11% (n=2), respectively.

The CR rates were 50% (n=5) in T-cell lymphoma patients and 5.5% (n=1) in B-cell patients. PR rates were 30% (n=3) and 5.5% (n=1), respectively. Thirty-nine percent (n=7) of B-cell patients had stable disease, but none of the T-cell patients did.

“Patients with non-T-cell lymphoma were much more likely to progress on treatment,” Dr Falchi noted. “Half of them did so [n=9].”

This is in comparison to the 20% of T-cell lymphoma patients who progressed on treatment (n=2).

Disease subtypes for complete responders included transformed follicular lymphoma (n=1), T-lymphoblastic lymphoma (n=1), adult T-cell leukemia/lymphoma (n=1), extranodal NK/T-cell lymphoma (n=1), and angioimmunoblastic T-cell lymphoma (n=2).

Partial responders had follicular lymphoma (n=1), cutaneous peripheral T-cell lymphoma (n=1), cutaneous anaplastic large-cell lymphoma (n=1), and angioimmunoblastic T-cell lymphoma (n=1).

The 2 responders with B-cell lymphoma (1 CR and 1 PR) ultimately progressed and died.

Of the 8 responders with T-cell lymphoma, 3 have an ongoing CR, and 2 of these patients proceeded to transplant.

One T-cell patient who achieved a CR and proceeded to transplant was lost to follow-up. Another died after transplant.

Two T-cell patients who achieved a PR progressed and died. And 1 patient has an ongoing PR.

In total, 75% of patients (n=21) progressed. The median PFS for the entire study cohort was 3.6 months (range, 1.5-5.7).

The median PFS was 2.2 months (range, 1.1-3.2) for patients with B-cell lymphomas and was not reached for the T-cell lymphoma patients.

Eighty-nine percent of B-cell patients progressed (n=16), as did 40% of T-cell patients (n=4).

Dr Falchi and his colleagues are now conducting studies to correlate the pharmacokinetics of azacitidine-romidepsin with genome-wide methylation and correlate TET2, IDH2, and DNMT3A mutation status with clinical response.

Photo by Larry Young

LA JOLLA, CA—A 2-drug combination has demonstrated preferential activity in T-cell lymphomas over B-cell lymphomas, according to researchers.

In a small, phase 1/2 study, treatment with oral 5-azacitidine and romidepsin produced a higher overall response rate (ORR) and prolonged progression-free survival (PFS) in patients with T-cell lymphomas.

“In a very limited sample, we’ve definitely observed exquisite activity of the combination in patients with T-cell lymphoma compared to all other subtypes,” said Lorenzo Falchi, MD, of Columbia University Medical Center in New York, New York.

Dr Falchi presented these results at the 10th Annual T-cell Lymphoma Forum.

The research was funded by the Leukemia and Lymphoma Society, the Lymphoma Research Fund at Columbia University, and Celgene.

The phase 1 portion of this study included patients with previously treated non-Hodgkin lymphoma (NHL) or Hodgkin lymphoma. The phase 2 portion included only patients with T-cell lymphomas, newly diagnosed or previously treated.

Thirty-three patients were enrolled—12 with Hodgkin lymphoma, 8 with B-cell NHL, and 13 with T-cell NHL.

The patients’ median age was 54 (range, 23-79). Fifty-seven percent (n=19) were male. Sixty-one percent of patients were non-Hispanic white (n=20), 24% (n=8) were black, and 12% (n=4) were Asian.

“This was a very heavily pretreated patient population,” Dr Falchi noted. “I’d like to emphasize that the median number of prior treatments is 5 [range, 0-15].”

“Over half of patients had had stem cell transplantation [17 autologous and 5 allogeneic]. And, if you look at the subtypes by histology, all patients, pretty much, at some point, received all the standard chemotherapy or treatment approaches that are typically used for that subtype.”

Treatment

Patients were divided into 7 dosing cohorts. Azacitidine doses ranged from 100 mg to 300 mg on days 1-14 or days 1-21 per cycle.

Romidepsin doses ranged from 10 mg/m² to 14 mg/m². The drug was given on days 8 and 15 every 21 or 28 days, or it was given on days 8, 15, and 22 every 35 days.

There were 2 dose-limiting toxicities (DLTs) in cohort 2—grade 3 thrombocytopenia and grade 3 pleural effusion. In this cohort, 3 patients received azacitidine at 200 mg on days 1-14 plus romidepsin at 10 mg/m² on days 8 and 15 every 21 days.

There were 3 DLTs in cohort 7—2 cases of grade 4 neutropenia and 1 case of grade 3 thrombocytopenia. In this cohort, 5 patients received azacitidine at 300 mg on days 1 to 21 plus romidepsin at 14 mg/m² on days 8, 15, and 22 every 35 days.

Because of the DLTs in cohort 7, cohort 6 was chosen as the maximum tolerated dose. In cohort 6, 3 patients received azacitidine at 300 mg on days 1-14 plus romidepsin at 14 mg/m² on days 8, 15, and 22 every 35 days.

Patients in the expansion cohort received treatment at the maximum tolerated dose. This cohort included 7 patients with T-cell lymphoma.

Safety

Treatment-emergent adverse events occurring in at least 5% of patients included:

• Anemia—3% grade 3
• Anorexia—9% grade 1
• Back pain—6% grade 2
• Constipation—6% grade 1
• Cough—9% grade 1
• Depression—3% grade 1 and 2
• Diarrhea—15% grade 1 and 6% grade 2
• Dyspnea—3% grade 1 and 2
• Fatigue—21% grade 1, 9% grade 2, and 3% grade 3
• Febrile neutropenia—3% grade 3 and 4
• Fever—6% grade 1 and 3% grade 2
• General disorders and administration site conditions—15% grade 1
• Hyperglycemia—3% grade 3
• Hypokalemia—6% grade 1
• Hypotension—3% grade 3
• Insomnia—6% grade 1
• Oral mucositis—9% grade 1 and 3% grade 2
• Nausea—18% grade 1, 27% grade 2, and 3% grade 3
• Neutrophil count decrease—3% grade 3 and 4
• Pain—3% grade 1 and 6% grade 2
• Pain of skin—3% grade 1 and 2
• Platelet count decrease—6% grade 2, 9% grade 3, and 6% grade 4
• Urinary tract infection—3% grade 3
• Vomiting—18% grade 1 and 21% grade 2.

Efficacy

Twenty-eight patients were evaluable for efficacy. The ORR for these patients was 36% (n=10).

The complete response (CR) rate was 22% (n=6), and the partial response (PR) rate was 14% (n=4). Twenty-five percent of patients (n=7) had stable disease, and 39% (n=11) progressed.

Dr Falchi noted that the ORR was “much higher” in patients with T-cell lymphoma than in those with B-cell lymphoma—80% (n=8) and 11% (n=2), respectively.

The CR rates were 50% (n=5) in T-cell lymphoma patients and 5.5% (n=1) in B-cell patients. PR rates were 30% (n=3) and 5.5% (n=1), respectively. Thirty-nine percent (n=7) of B-cell patients had stable disease, but none of the T-cell patients did.

“Patients with non-T-cell lymphoma were much more likely to progress on treatment,” Dr Falchi noted. “Half of them did so [n=9].”

This is in comparison to the 20% of T-cell lymphoma patients who progressed on treatment (n=2).

Disease subtypes for complete responders included transformed follicular lymphoma (n=1), T-lymphoblastic lymphoma (n=1), adult T-cell leukemia/lymphoma (n=1), extranodal NK/T-cell lymphoma (n=1), and angioimmunoblastic T-cell lymphoma (n=2).

Partial responders had follicular lymphoma (n=1), cutaneous peripheral T-cell lymphoma (n=1), cutaneous anaplastic large-cell lymphoma (n=1), and angioimmunoblastic T-cell lymphoma (n=1).

The 2 responders with B-cell lymphoma (1 CR and 1 PR) ultimately progressed and died.

Of the 8 responders with T-cell lymphoma, 3 have an ongoing CR, and 2 of these patients proceeded to transplant.

One T-cell patient who achieved a CR and proceeded to transplant was lost to follow-up. Another died after transplant.

Two T-cell patients who achieved a PR progressed and died. And 1 patient has an ongoing PR.

In total, 75% of patients (n=21) progressed. The median PFS for the entire study cohort was 3.6 months (range, 1.5-5.7).

The median PFS was 2.2 months (range, 1.1-3.2) for patients with B-cell lymphomas and was not reached for the T-cell lymphoma patients.

Eighty-nine percent of B-cell patients progressed (n=16), as did 40% of T-cell patients (n=4).

Dr Falchi and his colleagues are now conducting studies to correlate the pharmacokinetics of azacitidine-romidepsin with genome-wide methylation and correlate TET2, IDH2, and DNMT3A mutation status with clinical response.

SAN FRANCISCO – The CD19-directed 4-1BB chimeric antigen receptor (CAR) T-cell product JCAR017 demonstrated increased CAR T-cell expansion and persistence, and higher durability of response at higher dose levels – with manageable toxicities – in a pivotal phase 1 trial of relapsed/refractory B-cell non-Hodgkin lymphoma.

However, preliminary modeling data suggest that a therapeutic window exists for the CAR T-cell expansion, which means that development of strategies for pushing patients into that window could enhance efficacy and limit toxicity associated with JCAR017, Tanya Siddiqi, MD, of City of Hope Comprehensive Cancer Center, Duarte, Calif., reported at the ASCO-SITC Clinical Immuno-Oncology Symposium.

TRANSCEND NHL 001 is a multicenter, seamless design, pivotal trial, which started as a phase 1 first-in-human study of JCAR017, a defined composition CAR T-cell product also known as lisocabtagene maraleucel and administered at precise doses of CD4+ and CD8+ CAR T cells. Dose-finding and dose-expansion cohorts have been investigated, and currently the pivotal diffuse large B-cell lymphoma (DLBCL) cohort is enrolling, Dr. Saddiqi said, noting that dose level 2 (1 x 10⁸ cells given as a single dose) was selected for that cohort.

The current findings are based on the TRANSCEND core population – a set of patients selected from the dose-finding and dose-expansion cohorts. This population includes patients with DLBCL not otherwise specified, transformed follicular lymphoma, or high-grade double- or triple-hit lymphomas, she said, explaining that she and her colleagues looked at prelymphodepletion baseline patient characteristics and biomarkers to assess how they related to outcomes and toxicities. This precise dosing of JCAR017 reduces variability, enabling the identification of potential patient factors associated with clinical outcomes, she said.

Response rates among 27 patients who received dose level 2 were high, with an 81% overall response rate and a 63% complete response rate.

“Patients with complete remission seemed to have more of a durable response,” she said. “In the core population at dose level 2, 50% with 6 months of follow-up seemed to remain in complete response, so there’s a dose-response effect in these patients.”

It doesn’t appear that the dose affects development of cytokine release syndrome (CRS) or neurotoxicity (NT), as the rates of these (30% and 20%, respectively) did not differ by dose level or schedule, but certain baseline features, such as a lactate dehydrogenase (LDH) level above 500 U/L and tumor burden measured as the sum of the product of diameters of 50 cm or greater, do appear to affect the development of these toxicities.

For example, 10 of 13 (77%) of patients with both of those baseline characteristics developed CRS, and 7 of 13 (54%) developed NT; for those without these characteristics, the odds of developing CRS and NT were significantly lower, she said.

Of note, higher C_max, or peak expansion of CAR T cells in vivo, was seen at dose level 2, and exposure (area under the curve) was also higher, as was expected at that dose level, Dr. Siddiqi said.

“It also appears that there is a trend of patients with higher tumor burden to have higher expansion of their CAR T cells in vivo,” she said, noting that some of those patients were “superexpanders” with very high expansion of CAR T cells. “Similarly there were certain cytokines at the prelymphodepletion time point that seem to be higher … in patients who also go on to have higher expansion of their CAR T cells.”

These included interleukin-7, IL-15, MIP (macrophage inflammatory protein)–1alpha, and tumor necrosis factor (TNF)–alpha.

“Patients with certain higher inflammatory cytokines and biomarkers of inflammation also were noted to have higher events of CRS and neurotoxicity, so not just higher tumor burden, but also higher inflammatory state at baseline seems to affect patients in terms of getting any grade CRS or any grade neurotoxicity,” she said.

Those associated with CRS included ferritin, C-reactive protein (CRP), IL-10, IL-15, IL-16, TNF-alpha, and MIP-1beta levels, and those associated with NT included ferritin, CRP, d-dimer, IL-6, IL-15, TNF-alpha, and MIP-1alpha levels.

“Interestingly, there’s an inverse relationship between the expression of some of these biomarkers and inflammatory markers and the durability of response at 3 months,” she said.

Patients with higher tumor burden, LDH, and other markers either had no response at 3 months, or they had a very rapid response at the 1-month mark and then lost their response by 3 months, she noted.

“One of the theories could be that these patients with higher tumor burden, higher inflammatory state – they have such a high peak expansion rapidly after receiving their CAR T cells that potentially those CAR T cells may be getting exhausted or dying off very quickly, and therefore patients can lose their response,” she said.

When these data are considered together and modeled, there seems to be a therapeutic window where patients who have optimal expansion of CAR T cells in vivo may have lesser toxicity, higher overall response rates, and better durability of response, she said.

That is, on one end of the spectrum, there are patients with lower CAR T-cell expansion who have lower toxicities, but who also have lower overall response rates and lower durability of response, and on the other end, there are patients with superhigh expansion of CAR T cells, who have higher response rates, but also higher rates of toxicity, and who lose their response quickly.

“So if we can identify patients who would be in this window of optimal target expansion of CAR T cells, and if we could find strategies or mechanisms to move patients who are on either end of that spectrum into this window, we may be able to get patients with better efficacy and lower toxicities, and there could be combination strategies that could help get us there,” she said.

TRANSCEND NHL 001 is sponsored by Juno Therapeutics. Dr. Siddiqi reported serving as a consultant or adviser for Juno Therapeutics, and as a member of the speakers bureau for Pharmacyclics/Janssen and Seattle Genetics. Research funding was provided to her institution by Juno Therapeutics and several other companies.

[email protected]

SOURCE: Siddiqi T et al. ASCO-SITC, abstract 122.

SAN FRANCISCO – The CD19-directed 4-1BB chimeric antigen receptor (CAR) T-cell product JCAR017 demonstrated increased CAR T-cell expansion and persistence, and higher durability of response at higher dose levels – with manageable toxicities – in a pivotal phase 1 trial of relapsed/refractory B-cell non-Hodgkin lymphoma.

However, preliminary modeling data suggest that a therapeutic window exists for the CAR T-cell expansion, which means that development of strategies for pushing patients into that window could enhance efficacy and limit toxicity associated with JCAR017, Tanya Siddiqi, MD, of City of Hope Comprehensive Cancer Center, Duarte, Calif., reported at the ASCO-SITC Clinical Immuno-Oncology Symposium.

TRANSCEND NHL 001 is a multicenter, seamless design, pivotal trial, which started as a phase 1 first-in-human study of JCAR017, a defined composition CAR T-cell product also known as lisocabtagene maraleucel and administered at precise doses of CD4+ and CD8+ CAR T cells. Dose-finding and dose-expansion cohorts have been investigated, and currently the pivotal diffuse large B-cell lymphoma (DLBCL) cohort is enrolling, Dr. Saddiqi said, noting that dose level 2 (1 x 10⁸ cells given as a single dose) was selected for that cohort.

The current findings are based on the TRANSCEND core population – a set of patients selected from the dose-finding and dose-expansion cohorts. This population includes patients with DLBCL not otherwise specified, transformed follicular lymphoma, or high-grade double- or triple-hit lymphomas, she said, explaining that she and her colleagues looked at prelymphodepletion baseline patient characteristics and biomarkers to assess how they related to outcomes and toxicities. This precise dosing of JCAR017 reduces variability, enabling the identification of potential patient factors associated with clinical outcomes, she said.

Response rates among 27 patients who received dose level 2 were high, with an 81% overall response rate and a 63% complete response rate.

“Patients with complete remission seemed to have more of a durable response,” she said. “In the core population at dose level 2, 50% with 6 months of follow-up seemed to remain in complete response, so there’s a dose-response effect in these patients.”

It doesn’t appear that the dose affects development of cytokine release syndrome (CRS) or neurotoxicity (NT), as the rates of these (30% and 20%, respectively) did not differ by dose level or schedule, but certain baseline features, such as a lactate dehydrogenase (LDH) level above 500 U/L and tumor burden measured as the sum of the product of diameters of 50 cm or greater, do appear to affect the development of these toxicities.

For example, 10 of 13 (77%) of patients with both of those baseline characteristics developed CRS, and 7 of 13 (54%) developed NT; for those without these characteristics, the odds of developing CRS and NT were significantly lower, she said.

Of note, higher C_max, or peak expansion of CAR T cells in vivo, was seen at dose level 2, and exposure (area under the curve) was also higher, as was expected at that dose level, Dr. Siddiqi said.

“It also appears that there is a trend of patients with higher tumor burden to have higher expansion of their CAR T cells in vivo,” she said, noting that some of those patients were “superexpanders” with very high expansion of CAR T cells. “Similarly there were certain cytokines at the prelymphodepletion time point that seem to be higher … in patients who also go on to have higher expansion of their CAR T cells.”

These included interleukin-7, IL-15, MIP (macrophage inflammatory protein)–1alpha, and tumor necrosis factor (TNF)–alpha.

“Patients with certain higher inflammatory cytokines and biomarkers of inflammation also were noted to have higher events of CRS and neurotoxicity, so not just higher tumor burden, but also higher inflammatory state at baseline seems to affect patients in terms of getting any grade CRS or any grade neurotoxicity,” she said.

Those associated with CRS included ferritin, C-reactive protein (CRP), IL-10, IL-15, IL-16, TNF-alpha, and MIP-1beta levels, and those associated with NT included ferritin, CRP, d-dimer, IL-6, IL-15, TNF-alpha, and MIP-1alpha levels.

“Interestingly, there’s an inverse relationship between the expression of some of these biomarkers and inflammatory markers and the durability of response at 3 months,” she said.

Patients with higher tumor burden, LDH, and other markers either had no response at 3 months, or they had a very rapid response at the 1-month mark and then lost their response by 3 months, she noted.

“One of the theories could be that these patients with higher tumor burden, higher inflammatory state – they have such a high peak expansion rapidly after receiving their CAR T cells that potentially those CAR T cells may be getting exhausted or dying off very quickly, and therefore patients can lose their response,” she said.

When these data are considered together and modeled, there seems to be a therapeutic window where patients who have optimal expansion of CAR T cells in vivo may have lesser toxicity, higher overall response rates, and better durability of response, she said.

That is, on one end of the spectrum, there are patients with lower CAR T-cell expansion who have lower toxicities, but who also have lower overall response rates and lower durability of response, and on the other end, there are patients with superhigh expansion of CAR T cells, who have higher response rates, but also higher rates of toxicity, and who lose their response quickly.

“So if we can identify patients who would be in this window of optimal target expansion of CAR T cells, and if we could find strategies or mechanisms to move patients who are on either end of that spectrum into this window, we may be able to get patients with better efficacy and lower toxicities, and there could be combination strategies that could help get us there,” she said.

TRANSCEND NHL 001 is sponsored by Juno Therapeutics. Dr. Siddiqi reported serving as a consultant or adviser for Juno Therapeutics, and as a member of the speakers bureau for Pharmacyclics/Janssen and Seattle Genetics. Research funding was provided to her institution by Juno Therapeutics and several other companies.

[email protected]

SOURCE: Siddiqi T et al. ASCO-SITC, abstract 122.

SAN FRANCISCO – The CD19-directed 4-1BB chimeric antigen receptor (CAR) T-cell product JCAR017 demonstrated increased CAR T-cell expansion and persistence, and higher durability of response at higher dose levels – with manageable toxicities – in a pivotal phase 1 trial of relapsed/refractory B-cell non-Hodgkin lymphoma.

However, preliminary modeling data suggest that a therapeutic window exists for the CAR T-cell expansion, which means that development of strategies for pushing patients into that window could enhance efficacy and limit toxicity associated with JCAR017, Tanya Siddiqi, MD, of City of Hope Comprehensive Cancer Center, Duarte, Calif., reported at the ASCO-SITC Clinical Immuno-Oncology Symposium.

TRANSCEND NHL 001 is a multicenter, seamless design, pivotal trial, which started as a phase 1 first-in-human study of JCAR017, a defined composition CAR T-cell product also known as lisocabtagene maraleucel and administered at precise doses of CD4+ and CD8+ CAR T cells. Dose-finding and dose-expansion cohorts have been investigated, and currently the pivotal diffuse large B-cell lymphoma (DLBCL) cohort is enrolling, Dr. Saddiqi said, noting that dose level 2 (1 x 10⁸ cells given as a single dose) was selected for that cohort.

The current findings are based on the TRANSCEND core population – a set of patients selected from the dose-finding and dose-expansion cohorts. This population includes patients with DLBCL not otherwise specified, transformed follicular lymphoma, or high-grade double- or triple-hit lymphomas, she said, explaining that she and her colleagues looked at prelymphodepletion baseline patient characteristics and biomarkers to assess how they related to outcomes and toxicities. This precise dosing of JCAR017 reduces variability, enabling the identification of potential patient factors associated with clinical outcomes, she said.

Response rates among 27 patients who received dose level 2 were high, with an 81% overall response rate and a 63% complete response rate.

“Patients with complete remission seemed to have more of a durable response,” she said. “In the core population at dose level 2, 50% with 6 months of follow-up seemed to remain in complete response, so there’s a dose-response effect in these patients.”

It doesn’t appear that the dose affects development of cytokine release syndrome (CRS) or neurotoxicity (NT), as the rates of these (30% and 20%, respectively) did not differ by dose level or schedule, but certain baseline features, such as a lactate dehydrogenase (LDH) level above 500 U/L and tumor burden measured as the sum of the product of diameters of 50 cm or greater, do appear to affect the development of these toxicities.

For example, 10 of 13 (77%) of patients with both of those baseline characteristics developed CRS, and 7 of 13 (54%) developed NT; for those without these characteristics, the odds of developing CRS and NT were significantly lower, she said.

Of note, higher C_max, or peak expansion of CAR T cells in vivo, was seen at dose level 2, and exposure (area under the curve) was also higher, as was expected at that dose level, Dr. Siddiqi said.

“It also appears that there is a trend of patients with higher tumor burden to have higher expansion of their CAR T cells in vivo,” she said, noting that some of those patients were “superexpanders” with very high expansion of CAR T cells. “Similarly there were certain cytokines at the prelymphodepletion time point that seem to be higher … in patients who also go on to have higher expansion of their CAR T cells.”

These included interleukin-7, IL-15, MIP (macrophage inflammatory protein)–1alpha, and tumor necrosis factor (TNF)–alpha.

“Patients with certain higher inflammatory cytokines and biomarkers of inflammation also were noted to have higher events of CRS and neurotoxicity, so not just higher tumor burden, but also higher inflammatory state at baseline seems to affect patients in terms of getting any grade CRS or any grade neurotoxicity,” she said.

Those associated with CRS included ferritin, C-reactive protein (CRP), IL-10, IL-15, IL-16, TNF-alpha, and MIP-1beta levels, and those associated with NT included ferritin, CRP, d-dimer, IL-6, IL-15, TNF-alpha, and MIP-1alpha levels.

“Interestingly, there’s an inverse relationship between the expression of some of these biomarkers and inflammatory markers and the durability of response at 3 months,” she said.

Patients with higher tumor burden, LDH, and other markers either had no response at 3 months, or they had a very rapid response at the 1-month mark and then lost their response by 3 months, she noted.

“One of the theories could be that these patients with higher tumor burden, higher inflammatory state – they have such a high peak expansion rapidly after receiving their CAR T cells that potentially those CAR T cells may be getting exhausted or dying off very quickly, and therefore patients can lose their response,” she said.

When these data are considered together and modeled, there seems to be a therapeutic window where patients who have optimal expansion of CAR T cells in vivo may have lesser toxicity, higher overall response rates, and better durability of response, she said.

That is, on one end of the spectrum, there are patients with lower CAR T-cell expansion who have lower toxicities, but who also have lower overall response rates and lower durability of response, and on the other end, there are patients with superhigh expansion of CAR T cells, who have higher response rates, but also higher rates of toxicity, and who lose their response quickly.

“So if we can identify patients who would be in this window of optimal target expansion of CAR T cells, and if we could find strategies or mechanisms to move patients who are on either end of that spectrum into this window, we may be able to get patients with better efficacy and lower toxicities, and there could be combination strategies that could help get us there,” she said.

TRANSCEND NHL 001 is sponsored by Juno Therapeutics. Dr. Siddiqi reported serving as a consultant or adviser for Juno Therapeutics, and as a member of the speakers bureau for Pharmacyclics/Janssen and Seattle Genetics. Research funding was provided to her institution by Juno Therapeutics and several other companies.

[email protected]

SOURCE: Siddiqi T et al. ASCO-SITC, abstract 122.

Photo by Steve Fisch

Experiments in mice have shown that injecting immune-stimulating agents directly into a tumor can help the immune system eradicate tumors in other areas of the body.

The approach worked for several cancers, including lymphomas.

The researchers believe the local application of the agents could serve as a rapid and relatively inexpensive cancer therapy that is unlikely to cause the adverse effects often seen with more widespread immune stimulation.

“Our approach uses a one-time application of very small amounts of two agents to stimulate the immune cells only within the tumor itself,” said Ronald Levy, MD, of Stanford University Medical Center in California.

“In the mice, we saw amazing, body-wide effects, including the elimination of tumors all over the animal. This approach bypasses the need to identify tumor-specific immune targets and doesn’t require wholesale activation of the immune system or customization of a patient’s immune cells.”

Dr Levy and his colleagues described this approach in Science Translational Medicine.

The method involves reactivating cancer-specific T cells by injecting microgram amounts of two agents directly into the tumor site.

One of the agents is an unmethylated CG–enriched oligodeoxynucleotide (CpG)—a Toll-like receptor 9 (TLR9) ligand. It works with nearby immune cells to amplify the expression of OX40 on the surface of T cells.

The other agent is an antibody that binds to OX40. It activates the T cells to lead the charge against the cancer cells.

Because the agents are injected directly into the tumor, only T cells that have infiltrated it are activated. In effect, these T cells are “prescreened” by the body to recognize only cancer-specific proteins.

Some of these tumor-specific, activated T cells then leave the original tumor to find and destroy other identical tumors throughout the body.

The researchers found this approach worked well in mice with A20 B-cell lymphoma tumors transplanted in two sites on their bodies.

Injecting one tumor site with the agents caused regression of the untreated tumor as well as the treated one. In this way, 87 of 90 mice were cured.

Although lymphoma recurred in 3 of the mice, the tumors again regressed after a second treatment with CpG and anti-OX40.

The researchers saw similar results in mice with melanoma as well as breast and colon cancer.

Mice genetically engineered to spontaneously develop breast cancers in all 10 of their mammary pads also responded to the treatment. Treating the first tumor that arose often prevented the occurrence of future tumors and significantly increased the animals’ life span, the researchers found.

Finally, the team explored the specificity of the T cells by transplanting two types of tumors into mice.

They transplanted A20 lymphoma cells in two locations and a colon cancer cell line in a third location. Treatment of one of the lymphoma sites caused the regression of both lymphoma tumors but did not affect the colon cancer cells.

“This is a very targeted approach,” Dr Levy said. “Only the tumor that shares the protein targets displayed by the treated site is affected. We’re attacking specific targets without having to identify exactly what proteins the T cells are recognizing.”

Dr Levy and his colleagues have launched a clinical trial (NCT03410901) to test this treatment approach. The researchers hope to determine the adverse effects and optimal dose of the TLR9 agonist SD-101, the anti-OX40 antibody BMS 986178, and radiation therapy in patients with low-grade B-cell non-Hodgkin lymphomas.

If the trial is successful, Dr Levy believes the treatment could be useful for many tumor types.

“I don’t think there’s a limit to the type of tumor we could potentially treat,” he said, “as long as it has been infiltrated by the immune system.”

Photo by Steve Fisch

Experiments in mice have shown that injecting immune-stimulating agents directly into a tumor can help the immune system eradicate tumors in other areas of the body.

The approach worked for several cancers, including lymphomas.

The researchers believe the local application of the agents could serve as a rapid and relatively inexpensive cancer therapy that is unlikely to cause the adverse effects often seen with more widespread immune stimulation.

“Our approach uses a one-time application of very small amounts of two agents to stimulate the immune cells only within the tumor itself,” said Ronald Levy, MD, of Stanford University Medical Center in California.

“In the mice, we saw amazing, body-wide effects, including the elimination of tumors all over the animal. This approach bypasses the need to identify tumor-specific immune targets and doesn’t require wholesale activation of the immune system or customization of a patient’s immune cells.”

Dr Levy and his colleagues described this approach in Science Translational Medicine.

The method involves reactivating cancer-specific T cells by injecting microgram amounts of two agents directly into the tumor site.

One of the agents is an unmethylated CG–enriched oligodeoxynucleotide (CpG)—a Toll-like receptor 9 (TLR9) ligand. It works with nearby immune cells to amplify the expression of OX40 on the surface of T cells.

The other agent is an antibody that binds to OX40. It activates the T cells to lead the charge against the cancer cells.

Because the agents are injected directly into the tumor, only T cells that have infiltrated it are activated. In effect, these T cells are “prescreened” by the body to recognize only cancer-specific proteins.

Some of these tumor-specific, activated T cells then leave the original tumor to find and destroy other identical tumors throughout the body.

The researchers found this approach worked well in mice with A20 B-cell lymphoma tumors transplanted in two sites on their bodies.

Injecting one tumor site with the agents caused regression of the untreated tumor as well as the treated one. In this way, 87 of 90 mice were cured.

Although lymphoma recurred in 3 of the mice, the tumors again regressed after a second treatment with CpG and anti-OX40.

The researchers saw similar results in mice with melanoma as well as breast and colon cancer.

Mice genetically engineered to spontaneously develop breast cancers in all 10 of their mammary pads also responded to the treatment. Treating the first tumor that arose often prevented the occurrence of future tumors and significantly increased the animals’ life span, the researchers found.

Finally, the team explored the specificity of the T cells by transplanting two types of tumors into mice.

They transplanted A20 lymphoma cells in two locations and a colon cancer cell line in a third location. Treatment of one of the lymphoma sites caused the regression of both lymphoma tumors but did not affect the colon cancer cells.

“This is a very targeted approach,” Dr Levy said. “Only the tumor that shares the protein targets displayed by the treated site is affected. We’re attacking specific targets without having to identify exactly what proteins the T cells are recognizing.”

Dr Levy and his colleagues have launched a clinical trial (NCT03410901) to test this treatment approach. The researchers hope to determine the adverse effects and optimal dose of the TLR9 agonist SD-101, the anti-OX40 antibody BMS 986178, and radiation therapy in patients with low-grade B-cell non-Hodgkin lymphomas.

If the trial is successful, Dr Levy believes the treatment could be useful for many tumor types.

“I don’t think there’s a limit to the type of tumor we could potentially treat,” he said, “as long as it has been infiltrated by the immune system.”

Photo by Steve Fisch

Experiments in mice have shown that injecting immune-stimulating agents directly into a tumor can help the immune system eradicate tumors in other areas of the body.

The approach worked for several cancers, including lymphomas.

The researchers believe the local application of the agents could serve as a rapid and relatively inexpensive cancer therapy that is unlikely to cause the adverse effects often seen with more widespread immune stimulation.

“Our approach uses a one-time application of very small amounts of two agents to stimulate the immune cells only within the tumor itself,” said Ronald Levy, MD, of Stanford University Medical Center in California.

“In the mice, we saw amazing, body-wide effects, including the elimination of tumors all over the animal. This approach bypasses the need to identify tumor-specific immune targets and doesn’t require wholesale activation of the immune system or customization of a patient’s immune cells.”

Dr Levy and his colleagues described this approach in Science Translational Medicine.

The method involves reactivating cancer-specific T cells by injecting microgram amounts of two agents directly into the tumor site.

One of the agents is an unmethylated CG–enriched oligodeoxynucleotide (CpG)—a Toll-like receptor 9 (TLR9) ligand. It works with nearby immune cells to amplify the expression of OX40 on the surface of T cells.

The other agent is an antibody that binds to OX40. It activates the T cells to lead the charge against the cancer cells.

Because the agents are injected directly into the tumor, only T cells that have infiltrated it are activated. In effect, these T cells are “prescreened” by the body to recognize only cancer-specific proteins.

Some of these tumor-specific, activated T cells then leave the original tumor to find and destroy other identical tumors throughout the body.

The researchers found this approach worked well in mice with A20 B-cell lymphoma tumors transplanted in two sites on their bodies.

Injecting one tumor site with the agents caused regression of the untreated tumor as well as the treated one. In this way, 87 of 90 mice were cured.

Although lymphoma recurred in 3 of the mice, the tumors again regressed after a second treatment with CpG and anti-OX40.

The researchers saw similar results in mice with melanoma as well as breast and colon cancer.

Mice genetically engineered to spontaneously develop breast cancers in all 10 of their mammary pads also responded to the treatment. Treating the first tumor that arose often prevented the occurrence of future tumors and significantly increased the animals’ life span, the researchers found.

Finally, the team explored the specificity of the T cells by transplanting two types of tumors into mice.

They transplanted A20 lymphoma cells in two locations and a colon cancer cell line in a third location. Treatment of one of the lymphoma sites caused the regression of both lymphoma tumors but did not affect the colon cancer cells.

“This is a very targeted approach,” Dr Levy said. “Only the tumor that shares the protein targets displayed by the treated site is affected. We’re attacking specific targets without having to identify exactly what proteins the T cells are recognizing.”

Dr Levy and his colleagues have launched a clinical trial (NCT03410901) to test this treatment approach. The researchers hope to determine the adverse effects and optimal dose of the TLR9 agonist SD-101, the anti-OX40 antibody BMS 986178, and radiation therapy in patients with low-grade B-cell non-Hodgkin lymphomas.

If the trial is successful, Dr Levy believes the treatment could be useful for many tumor types.

“I don’t think there’s a limit to the type of tumor we could potentially treat,” he said, “as long as it has been infiltrated by the immune system.”

Photo by Aaron Logan

Existing drugs could be combined to treat double-hit lymphoma (DHL), according to preclinical research published in Science Translational Medicine.

The drugs are tigecycline, an antibiotic, and venetoclax, a BCL2 inhibitor.

Researchers observed promising activity with these drugs in combination, both in cell lines and mouse models of DHL.

The team therefore believes the drugs could be repurposed to treat DHL, which currently has a dismal prognosis.

Study author Micol Ravà, PhD, of the European Institute of Oncology in Milan, Italy, and her colleagues noted that DHL is driven by the abnormal activation of MYC and BCL2. However, selective BCL2 inhibitors like venetoclax have failed to halt disease progression in DHL patients.

Seeking a way to sensitize DHL to BCL2 inhibitors, the researchers turned to tigecycline, which interferes with mitochondria to trigger a MYC-dependent cell death pathway.

The team found that tigecycline and venetoclax demonstrated synergy in 5 DHL cell lines. The drugs were synergistic in 3 cell lines—Karpas-422, SU-DHL-6, and DOHH-2—in which neither drug alone showed significant pro-apoptotic activity.

In 2 other cell lines—SU-DHL-4 and OCI-LY8—venetoclax was active when given alone, but its activity was enhanced by the addition of tigecycline.

In mouse models of DHL (using the human cell lines SU-DHL-6, DOHH-2, and OCI-LY8), each of the drugs alone were able to slow tumor progression somewhat.

However, combination tigecycline and venetoclax exhibited “strong antitumoral activity,” according to the researchers. In fact, the combination caused full disease regression in all 8 SU-DHL-6 mice and 3 of 9 OCI-LY8 mice.

Dr Ravà and her colleagues also found the combination produced “rapid and marked tumor regression” in mice with a patient-derived xenograft.

The researchers observed no toxicity when tigecycline and venetoclax were given at low doses. However, mice receiving more aggressive treatment had some inflammation in the liver and spleen. And some mice treated with high doses of tigecycline and venetoclax died within 1 week of treatment initiation.

Finally, Dr Ravà and her colleagues found that tigecycline and venetoclax each synergized with rituximab. The team therefore concluded that tigecycline and venetoclax “have the potential to reinforce rituximab-containing therapies in the clinic.”

Photo by Aaron Logan

Existing drugs could be combined to treat double-hit lymphoma (DHL), according to preclinical research published in Science Translational Medicine.

The drugs are tigecycline, an antibiotic, and venetoclax, a BCL2 inhibitor.

Researchers observed promising activity with these drugs in combination, both in cell lines and mouse models of DHL.

The team therefore believes the drugs could be repurposed to treat DHL, which currently has a dismal prognosis.

Study author Micol Ravà, PhD, of the European Institute of Oncology in Milan, Italy, and her colleagues noted that DHL is driven by the abnormal activation of MYC and BCL2. However, selective BCL2 inhibitors like venetoclax have failed to halt disease progression in DHL patients.

Seeking a way to sensitize DHL to BCL2 inhibitors, the researchers turned to tigecycline, which interferes with mitochondria to trigger a MYC-dependent cell death pathway.

The team found that tigecycline and venetoclax demonstrated synergy in 5 DHL cell lines. The drugs were synergistic in 3 cell lines—Karpas-422, SU-DHL-6, and DOHH-2—in which neither drug alone showed significant pro-apoptotic activity.

In 2 other cell lines—SU-DHL-4 and OCI-LY8—venetoclax was active when given alone, but its activity was enhanced by the addition of tigecycline.

In mouse models of DHL (using the human cell lines SU-DHL-6, DOHH-2, and OCI-LY8), each of the drugs alone were able to slow tumor progression somewhat.

However, combination tigecycline and venetoclax exhibited “strong antitumoral activity,” according to the researchers. In fact, the combination caused full disease regression in all 8 SU-DHL-6 mice and 3 of 9 OCI-LY8 mice.

Dr Ravà and her colleagues also found the combination produced “rapid and marked tumor regression” in mice with a patient-derived xenograft.

The researchers observed no toxicity when tigecycline and venetoclax were given at low doses. However, mice receiving more aggressive treatment had some inflammation in the liver and spleen. And some mice treated with high doses of tigecycline and venetoclax died within 1 week of treatment initiation.

Finally, Dr Ravà and her colleagues found that tigecycline and venetoclax each synergized with rituximab. The team therefore concluded that tigecycline and venetoclax “have the potential to reinforce rituximab-containing therapies in the clinic.”

Photo by Aaron Logan

Existing drugs could be combined to treat double-hit lymphoma (DHL), according to preclinical research published in Science Translational Medicine.

The drugs are tigecycline, an antibiotic, and venetoclax, a BCL2 inhibitor.

Researchers observed promising activity with these drugs in combination, both in cell lines and mouse models of DHL.

The team therefore believes the drugs could be repurposed to treat DHL, which currently has a dismal prognosis.

Study author Micol Ravà, PhD, of the European Institute of Oncology in Milan, Italy, and her colleagues noted that DHL is driven by the abnormal activation of MYC and BCL2. However, selective BCL2 inhibitors like venetoclax have failed to halt disease progression in DHL patients.

Seeking a way to sensitize DHL to BCL2 inhibitors, the researchers turned to tigecycline, which interferes with mitochondria to trigger a MYC-dependent cell death pathway.

The team found that tigecycline and venetoclax demonstrated synergy in 5 DHL cell lines. The drugs were synergistic in 3 cell lines—Karpas-422, SU-DHL-6, and DOHH-2—in which neither drug alone showed significant pro-apoptotic activity.

In 2 other cell lines—SU-DHL-4 and OCI-LY8—venetoclax was active when given alone, but its activity was enhanced by the addition of tigecycline.

In mouse models of DHL (using the human cell lines SU-DHL-6, DOHH-2, and OCI-LY8), each of the drugs alone were able to slow tumor progression somewhat.

However, combination tigecycline and venetoclax exhibited “strong antitumoral activity,” according to the researchers. In fact, the combination caused full disease regression in all 8 SU-DHL-6 mice and 3 of 9 OCI-LY8 mice.

Dr Ravà and her colleagues also found the combination produced “rapid and marked tumor regression” in mice with a patient-derived xenograft.

The researchers observed no toxicity when tigecycline and venetoclax were given at low doses. However, mice receiving more aggressive treatment had some inflammation in the liver and spleen. And some mice treated with high doses of tigecycline and venetoclax died within 1 week of treatment initiation.

Finally, Dr Ravà and her colleagues found that tigecycline and venetoclax each synergized with rituximab. The team therefore concluded that tigecycline and venetoclax “have the potential to reinforce rituximab-containing therapies in the clinic.”

People with rheumatologic diseases and cancer appear to be at no higher risk of having an adverse event or disease flare if they receive checkpoint inhibitor therapy, compared with the general population, experience from the Mayo Clinic suggests.

In a brief report published in Arthritis and Rheumatology, a team from the Mayo Clinic in Rochester, Minn., reported on 16 patients with rheumatologic diseases who received cancer immunotherapy. They found that only a minority experienced a flare of their disease or another immune-related event.

The rate of severe immune-related adverse effects (IRAEs) with a single immune checkpoint inhibitor (ICI) has been reported to be less than 2% among the average population. However, less is known about patients with underlying rheumatologic disease, largely because initial trials of ICIs had excluded patients with autoimmune diseases for fear the treatment would induce a disease flare, the researchers noted.

Small studies have suggested that people with inflammatory arthritis or connective tissue diseases have higher rates of IRAEs with immunotherapy, but it is unclear how often these events represented flares of their disease or new autoimmune events, and whether the events had any predictive significance for cancer survival.

In this study, researchers performed a retrospective review of medical records and identified 16 patients with rheumatologic diseases who had received checkpoint inhibitor therapy at the Mayo Clinic between 2011 and 2016.

The most common rheumatologic diseases among the 16 patients were rheumatoid arthritis, polymyalgia rheumatica, Sjögren’s syndrome, and systemic lupus erythematosus, and the most common cancers were malignant melanoma, pulmonary malignancies, and non-Hodgkin lymphoma. Seven of the patients were receiving immunosuppressive therapy or glucocorticoids for their rheumatologic disease upon initiation of a checkpoint inhibitor.

Ten patients had received a prior disease-modifying antirheumatic drug, but only two patients were still taking this at the time of ICI initiation.

Results showed that six of the patients (38%) had an IRAE or flare of their rheumatologic disease, two were graded as mild. All of the patients responded well to glucocorticoids and discontinuation of therapy. The most common event was colitis and just one patient had a flare of rheumatologic disease.

“This is consistent with what is currently known about the management of IRAEs,” the research team wrote. “This study adds further support to the emerging notion that the rate of IRAEs is not necessarily higher in this group compared to the general population.”

The type and severity of rheumatologic disease may play an important role in both the risk of disease flare and IRAEs, a factor that they were unable to assess in the current study, the researchers wrote.

“Further large, prospective studies are needed to address the link between the type, severity, and concurrent rheumatologic disease activity on the risk of flare and IRAE. It is possible that patients with more severe or active disease are at higher risk for these complications,” they wrote.

While patients in the study did not appear to have significantly increased incidence or severity of adverse effects, the research team advised that “treatment decisions must factor in clinical judgement.”

They noted that some studies had proposed predictive biomarkers, pretreatment workup, and monitoring, but this advice was based on a small body of evidence.

“Larger, prospective studies will be necessary to validate these findings and establish evidence-based guidelines for appropriate identification and rating of the rheumatologic IRAEs as well as their treatment, such that patients can continue to receive potentially life-saving cancer treatments,” they wrote.

One of the researchers reported advisory board membership with Bristol-Myers Squibb.

[email protected]

SOURCE: Richter M et al. Arthritis Rheumatol. 2018 Jan 24. doi: 10.1002/art.40397.

People with rheumatologic diseases and cancer appear to be at no higher risk of having an adverse event or disease flare if they receive checkpoint inhibitor therapy, compared with the general population, experience from the Mayo Clinic suggests.

In a brief report published in Arthritis and Rheumatology, a team from the Mayo Clinic in Rochester, Minn., reported on 16 patients with rheumatologic diseases who received cancer immunotherapy. They found that only a minority experienced a flare of their disease or another immune-related event.

The rate of severe immune-related adverse effects (IRAEs) with a single immune checkpoint inhibitor (ICI) has been reported to be less than 2% among the average population. However, less is known about patients with underlying rheumatologic disease, largely because initial trials of ICIs had excluded patients with autoimmune diseases for fear the treatment would induce a disease flare, the researchers noted.

Small studies have suggested that people with inflammatory arthritis or connective tissue diseases have higher rates of IRAEs with immunotherapy, but it is unclear how often these events represented flares of their disease or new autoimmune events, and whether the events had any predictive significance for cancer survival.

In this study, researchers performed a retrospective review of medical records and identified 16 patients with rheumatologic diseases who had received checkpoint inhibitor therapy at the Mayo Clinic between 2011 and 2016.

The most common rheumatologic diseases among the 16 patients were rheumatoid arthritis, polymyalgia rheumatica, Sjögren’s syndrome, and systemic lupus erythematosus, and the most common cancers were malignant melanoma, pulmonary malignancies, and non-Hodgkin lymphoma. Seven of the patients were receiving immunosuppressive therapy or glucocorticoids for their rheumatologic disease upon initiation of a checkpoint inhibitor.

Ten patients had received a prior disease-modifying antirheumatic drug, but only two patients were still taking this at the time of ICI initiation.

Results showed that six of the patients (38%) had an IRAE or flare of their rheumatologic disease, two were graded as mild. All of the patients responded well to glucocorticoids and discontinuation of therapy. The most common event was colitis and just one patient had a flare of rheumatologic disease.

“This is consistent with what is currently known about the management of IRAEs,” the research team wrote. “This study adds further support to the emerging notion that the rate of IRAEs is not necessarily higher in this group compared to the general population.”

The type and severity of rheumatologic disease may play an important role in both the risk of disease flare and IRAEs, a factor that they were unable to assess in the current study, the researchers wrote.

“Further large, prospective studies are needed to address the link between the type, severity, and concurrent rheumatologic disease activity on the risk of flare and IRAE. It is possible that patients with more severe or active disease are at higher risk for these complications,” they wrote.

While patients in the study did not appear to have significantly increased incidence or severity of adverse effects, the research team advised that “treatment decisions must factor in clinical judgement.”

They noted that some studies had proposed predictive biomarkers, pretreatment workup, and monitoring, but this advice was based on a small body of evidence.

“Larger, prospective studies will be necessary to validate these findings and establish evidence-based guidelines for appropriate identification and rating of the rheumatologic IRAEs as well as their treatment, such that patients can continue to receive potentially life-saving cancer treatments,” they wrote.

One of the researchers reported advisory board membership with Bristol-Myers Squibb.

[email protected]

SOURCE: Richter M et al. Arthritis Rheumatol. 2018 Jan 24. doi: 10.1002/art.40397.

People with rheumatologic diseases and cancer appear to be at no higher risk of having an adverse event or disease flare if they receive checkpoint inhibitor therapy, compared with the general population, experience from the Mayo Clinic suggests.

In a brief report published in Arthritis and Rheumatology, a team from the Mayo Clinic in Rochester, Minn., reported on 16 patients with rheumatologic diseases who received cancer immunotherapy. They found that only a minority experienced a flare of their disease or another immune-related event.

The rate of severe immune-related adverse effects (IRAEs) with a single immune checkpoint inhibitor (ICI) has been reported to be less than 2% among the average population. However, less is known about patients with underlying rheumatologic disease, largely because initial trials of ICIs had excluded patients with autoimmune diseases for fear the treatment would induce a disease flare, the researchers noted.

Small studies have suggested that people with inflammatory arthritis or connective tissue diseases have higher rates of IRAEs with immunotherapy, but it is unclear how often these events represented flares of their disease or new autoimmune events, and whether the events had any predictive significance for cancer survival.

In this study, researchers performed a retrospective review of medical records and identified 16 patients with rheumatologic diseases who had received checkpoint inhibitor therapy at the Mayo Clinic between 2011 and 2016.

The most common rheumatologic diseases among the 16 patients were rheumatoid arthritis, polymyalgia rheumatica, Sjögren’s syndrome, and systemic lupus erythematosus, and the most common cancers were malignant melanoma, pulmonary malignancies, and non-Hodgkin lymphoma. Seven of the patients were receiving immunosuppressive therapy or glucocorticoids for their rheumatologic disease upon initiation of a checkpoint inhibitor.

Ten patients had received a prior disease-modifying antirheumatic drug, but only two patients were still taking this at the time of ICI initiation.

Results showed that six of the patients (38%) had an IRAE or flare of their rheumatologic disease, two were graded as mild. All of the patients responded well to glucocorticoids and discontinuation of therapy. The most common event was colitis and just one patient had a flare of rheumatologic disease.

“This is consistent with what is currently known about the management of IRAEs,” the research team wrote. “This study adds further support to the emerging notion that the rate of IRAEs is not necessarily higher in this group compared to the general population.”

The type and severity of rheumatologic disease may play an important role in both the risk of disease flare and IRAEs, a factor that they were unable to assess in the current study, the researchers wrote.

“Further large, prospective studies are needed to address the link between the type, severity, and concurrent rheumatologic disease activity on the risk of flare and IRAE. It is possible that patients with more severe or active disease are at higher risk for these complications,” they wrote.

While patients in the study did not appear to have significantly increased incidence or severity of adverse effects, the research team advised that “treatment decisions must factor in clinical judgement.”

They noted that some studies had proposed predictive biomarkers, pretreatment workup, and monitoring, but this advice was based on a small body of evidence.

“Larger, prospective studies will be necessary to validate these findings and establish evidence-based guidelines for appropriate identification and rating of the rheumatologic IRAEs as well as their treatment, such that patients can continue to receive potentially life-saving cancer treatments,” they wrote.

One of the researchers reported advisory board membership with Bristol-Myers Squibb.

[email protected]

SOURCE: Richter M et al. Arthritis Rheumatol. 2018 Jan 24. doi: 10.1002/art.40397.

Malignant plasma cells

A long-term study showed that patients with monoclonal gammopathy of undetermined significance (MGUS) were still at risk of progressing to other plasma-cell or lymphoid disorders after more than 30 years of follow-up.

The risk of developing such disorders was nearly 7 times higher in MGUS patients than in matched control subjects.

Patients with MGUS also had a significantly shorter median survival than controls.

Researchers reported these findings in NEJM.

“Monoclonal gammopathy of undetermined significance is present in more than 3% of the general population age 50 and older,” said study author S. Vincent Rajkumar, MD, of the Mayo Clinic in Rochester, Minnesota.

“In some cases, people with monoclonal gammopathy of undetermined significance go on to develop multiple myeloma.”

With this in mind, Dr Rajkumar and his colleagues studied 1384 patients—210 with IgM MGUS and 1129 with non-IgM MGUS. Patients were diagnosed with MGUS from 1960 through 1994, and their median age at diagnosis was 72.

The median follow-up was 34.1 years (range, 0.0 to 43.6), so there were 14,130 person-years of follow-up.

During that time, 147 patients progressed to another disorder, including:

• 97 to multiple myeloma
• 19 to non-Hodgkin lymphoma
• 14 to AL amyloidosis
• 13 to Waldenstrom’s macroglobulinemia
• 3 to chronic lymphocytic leukemia
• 1 to plasmacytoma.

The rate of progression in MGUS patients—11%—represented a risk of these disorders that was 6.5 times higher than the risk observed in an age- and sex-matched control population.

The risk of progression also increased over time for MGUS patients. Without accounting for death due to competing causes, the risk of progression was 10% at 10 years, 18% at 20 years, 28% at 30 years, and 36% at both 35 and 40 years.

“We also found that patients with monoclonal gammopathy of undetermined significance had shorter survival than comparable people without the condition, which raises the possibility there may be other disorders associated with monoclonal gammopathy of undetermined significance that still need further study,” Dr Rajkumar said.

The median survival was 8.1 years in MGUS patients and 12.4 years in controls (P<0.001).

Overall, 1300 MGUS patients (94%) had died at last follow-up. Of the 84 patients who were still alive, 5 had progressed.

Malignant plasma cells

A long-term study showed that patients with monoclonal gammopathy of undetermined significance (MGUS) were still at risk of progressing to other plasma-cell or lymphoid disorders after more than 30 years of follow-up.

The risk of developing such disorders was nearly 7 times higher in MGUS patients than in matched control subjects.

Patients with MGUS also had a significantly shorter median survival than controls.

Researchers reported these findings in NEJM.

“Monoclonal gammopathy of undetermined significance is present in more than 3% of the general population age 50 and older,” said study author S. Vincent Rajkumar, MD, of the Mayo Clinic in Rochester, Minnesota.

“In some cases, people with monoclonal gammopathy of undetermined significance go on to develop multiple myeloma.”

With this in mind, Dr Rajkumar and his colleagues studied 1384 patients—210 with IgM MGUS and 1129 with non-IgM MGUS. Patients were diagnosed with MGUS from 1960 through 1994, and their median age at diagnosis was 72.

The median follow-up was 34.1 years (range, 0.0 to 43.6), so there were 14,130 person-years of follow-up.

During that time, 147 patients progressed to another disorder, including:

• 97 to multiple myeloma
• 19 to non-Hodgkin lymphoma
• 14 to AL amyloidosis
• 13 to Waldenstrom’s macroglobulinemia
• 3 to chronic lymphocytic leukemia
• 1 to plasmacytoma.

The rate of progression in MGUS patients—11%—represented a risk of these disorders that was 6.5 times higher than the risk observed in an age- and sex-matched control population.

The risk of progression also increased over time for MGUS patients. Without accounting for death due to competing causes, the risk of progression was 10% at 10 years, 18% at 20 years, 28% at 30 years, and 36% at both 35 and 40 years.

“We also found that patients with monoclonal gammopathy of undetermined significance had shorter survival than comparable people without the condition, which raises the possibility there may be other disorders associated with monoclonal gammopathy of undetermined significance that still need further study,” Dr Rajkumar said.

The median survival was 8.1 years in MGUS patients and 12.4 years in controls (P<0.001).

Overall, 1300 MGUS patients (94%) had died at last follow-up. Of the 84 patients who were still alive, 5 had progressed.

Malignant plasma cells

A long-term study showed that patients with monoclonal gammopathy of undetermined significance (MGUS) were still at risk of progressing to other plasma-cell or lymphoid disorders after more than 30 years of follow-up.

The risk of developing such disorders was nearly 7 times higher in MGUS patients than in matched control subjects.

Patients with MGUS also had a significantly shorter median survival than controls.

Researchers reported these findings in NEJM.

“Monoclonal gammopathy of undetermined significance is present in more than 3% of the general population age 50 and older,” said study author S. Vincent Rajkumar, MD, of the Mayo Clinic in Rochester, Minnesota.

“In some cases, people with monoclonal gammopathy of undetermined significance go on to develop multiple myeloma.”

With this in mind, Dr Rajkumar and his colleagues studied 1384 patients—210 with IgM MGUS and 1129 with non-IgM MGUS. Patients were diagnosed with MGUS from 1960 through 1994, and their median age at diagnosis was 72.

The median follow-up was 34.1 years (range, 0.0 to 43.6), so there were 14,130 person-years of follow-up.

During that time, 147 patients progressed to another disorder, including:

• 97 to multiple myeloma
• 19 to non-Hodgkin lymphoma
• 14 to AL amyloidosis
• 13 to Waldenstrom’s macroglobulinemia
• 3 to chronic lymphocytic leukemia
• 1 to plasmacytoma.

The rate of progression in MGUS patients—11%—represented a risk of these disorders that was 6.5 times higher than the risk observed in an age- and sex-matched control population.

The risk of progression also increased over time for MGUS patients. Without accounting for death due to competing causes, the risk of progression was 10% at 10 years, 18% at 20 years, 28% at 30 years, and 36% at both 35 and 40 years.

“We also found that patients with monoclonal gammopathy of undetermined significance had shorter survival than comparable people without the condition, which raises the possibility there may be other disorders associated with monoclonal gammopathy of undetermined significance that still need further study,” Dr Rajkumar said.

The median survival was 8.1 years in MGUS patients and 12.4 years in controls (P<0.001).

Overall, 1300 MGUS patients (94%) had died at last follow-up. Of the 84 patients who were still alive, 5 had progressed.

Photo from Novartis

The chimeric antigen receptor (CAR) T-cell therapy tisagenlecleucel (Kymriah, formerly CTL019) is getting fast-tracked in the United States (US) and European Union (EU).

The US Food and Drug Administration (FDA) has accepted for priority review the supplemental biologics license application (sBLA) for tisagenlecleucel for the treatment of adults with relapsed or refractory (R/R) diffuse large B-cell lymphoma (DLBCL) who are ineligible for, or relapse after, autologous hematopoietic stem cell transplant (auto-HSCT).

Meanwhile, the European Medicines Agency (EMA) has granted accelerated assessment to the marketing authorization application (MAA) for tisagenlecleucel for the treatment of children and young adults with R/R B-cell acute lymphoblastic leukemia (ALL) and for adults with R/R DLBCL who are ineligible for auto-HSCT.

If the sBLA and MAA are approved, tisagenlecleucel will be the first CAR T-cell therapy available for 2 distinct indications in non-Hodgkin lymphoma and B-cell ALL.

Tisagenlecleucel became the first CAR T-cell therapy to receive regulatory approval when it was approved by the FDA in August 2017 for use in patients up to 25 years of age who have B-cell precursor ALL that is refractory or in second or later relapse.

Supporting data

The regulatory applications for tisagenlecleucel in the US and EU are supported by data from the Novartis-sponsored global clinical trial program in children and young adults with R/R B-cell ALL and adults with R/R DLBCL.

Results from the phase 2 JULIET trial served as the basis of the sBLA and MAA for tisagenlecleucel in adults with R/R DLCBL. Data from this trial were presented at the 2017 ASH Annual Meeting in December.

Results from the phase 2 ELIANA study were submitted as part of the MAA for tisagenlecleucel in children and young adults with R/R B-cell ALL. Data from this trial were presented at the 2017 EHA Congress last June.

About priority review, accelerated assessment

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

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

The EMA grants accelerated assessment when a product is expected to be of major public health interest, particularly from the point of view of therapeutic innovation.

Accelerated assessment shortens the review period from 210 days to 150 days.

Photo from Novartis

The chimeric antigen receptor (CAR) T-cell therapy tisagenlecleucel (Kymriah, formerly CTL019) is getting fast-tracked in the United States (US) and European Union (EU).

The US Food and Drug Administration (FDA) has accepted for priority review the supplemental biologics license application (sBLA) for tisagenlecleucel for the treatment of adults with relapsed or refractory (R/R) diffuse large B-cell lymphoma (DLBCL) who are ineligible for, or relapse after, autologous hematopoietic stem cell transplant (auto-HSCT).

Meanwhile, the European Medicines Agency (EMA) has granted accelerated assessment to the marketing authorization application (MAA) for tisagenlecleucel for the treatment of children and young adults with R/R B-cell acute lymphoblastic leukemia (ALL) and for adults with R/R DLBCL who are ineligible for auto-HSCT.

If the sBLA and MAA are approved, tisagenlecleucel will be the first CAR T-cell therapy available for 2 distinct indications in non-Hodgkin lymphoma and B-cell ALL.

Tisagenlecleucel became the first CAR T-cell therapy to receive regulatory approval when it was approved by the FDA in August 2017 for use in patients up to 25 years of age who have B-cell precursor ALL that is refractory or in second or later relapse.

Supporting data

The regulatory applications for tisagenlecleucel in the US and EU are supported by data from the Novartis-sponsored global clinical trial program in children and young adults with R/R B-cell ALL and adults with R/R DLBCL.

Results from the phase 2 JULIET trial served as the basis of the sBLA and MAA for tisagenlecleucel in adults with R/R DLCBL. Data from this trial were presented at the 2017 ASH Annual Meeting in December.

Results from the phase 2 ELIANA study were submitted as part of the MAA for tisagenlecleucel in children and young adults with R/R B-cell ALL. Data from this trial were presented at the 2017 EHA Congress last June.

About priority review, accelerated assessment

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

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

The EMA grants accelerated assessment when a product is expected to be of major public health interest, particularly from the point of view of therapeutic innovation.

Accelerated assessment shortens the review period from 210 days to 150 days.

Photo from Novartis

The chimeric antigen receptor (CAR) T-cell therapy tisagenlecleucel (Kymriah, formerly CTL019) is getting fast-tracked in the United States (US) and European Union (EU).

The US Food and Drug Administration (FDA) has accepted for priority review the supplemental biologics license application (sBLA) for tisagenlecleucel for the treatment of adults with relapsed or refractory (R/R) diffuse large B-cell lymphoma (DLBCL) who are ineligible for, or relapse after, autologous hematopoietic stem cell transplant (auto-HSCT).

Meanwhile, the European Medicines Agency (EMA) has granted accelerated assessment to the marketing authorization application (MAA) for tisagenlecleucel for the treatment of children and young adults with R/R B-cell acute lymphoblastic leukemia (ALL) and for adults with R/R DLBCL who are ineligible for auto-HSCT.

If the sBLA and MAA are approved, tisagenlecleucel will be the first CAR T-cell therapy available for 2 distinct indications in non-Hodgkin lymphoma and B-cell ALL.

Tisagenlecleucel became the first CAR T-cell therapy to receive regulatory approval when it was approved by the FDA in August 2017 for use in patients up to 25 years of age who have B-cell precursor ALL that is refractory or in second or later relapse.

Supporting data

The regulatory applications for tisagenlecleucel in the US and EU are supported by data from the Novartis-sponsored global clinical trial program in children and young adults with R/R B-cell ALL and adults with R/R DLBCL.

Results from the phase 2 JULIET trial served as the basis of the sBLA and MAA for tisagenlecleucel in adults with R/R DLCBL. Data from this trial were presented at the 2017 ASH Annual Meeting in December.

Results from the phase 2 ELIANA study were submitted as part of the MAA for tisagenlecleucel in children and young adults with R/R B-cell ALL. Data from this trial were presented at the 2017 EHA Congress last June.

About priority review, accelerated assessment

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

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

The EMA grants accelerated assessment when a product is expected to be of major public health interest, particularly from the point of view of therapeutic innovation.

Accelerated assessment shortens the review period from 210 days to 150 days.

The Food and Drug Administration has granted a priority review for the CAR T-cell therapy tisagenlecleucel suspension, formerly CTL019, for the treatment of adult patients with relapsed or refractory diffuse large B-cell lymphoma who are ineligible for or relapsed after autologous stem cell transplant.

[email protected]

The Food and Drug Administration has granted a priority review for the CAR T-cell therapy tisagenlecleucel suspension, formerly CTL019, for the treatment of adult patients with relapsed or refractory diffuse large B-cell lymphoma who are ineligible for or relapsed after autologous stem cell transplant.

[email protected]

The Food and Drug Administration has granted a priority review for the CAR T-cell therapy tisagenlecleucel suspension, formerly CTL019, for the treatment of adult patients with relapsed or refractory diffuse large B-cell lymphoma who are ineligible for or relapsed after autologous stem cell transplant.

[email protected]