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Mayo experts outline Waldenström macroglobulinemia management
, especially when rapid control is needed for bulky disease, according to treatment guidelines from a multidisciplinary expert panel.
The Mayo Clinic Cancer Center Myeloma, Amyloidosis, and Dysproteinemia and Lymphoma Disease-Oriented Groups, composed of experts who have collectively treated hundreds of patients with Waldenström macroglobulinemia, updated their recommendations for management of the condition in JAMA Oncology. It’s the first update from the group since 2010. The new treatment approaches are based on clinical and observational studies published or presented through December 2015 and consensus recommendations.
The Mayo group said dexamethasone-rituximab-cyclophosphamide can be an alternative treatment for patients with symptomatic Waldenström macroglobulinemia with a low disease burden. But because of an absence of data, the group said rituximab maintenance therapy is not recommended for routine use outside of clinical trials.
Rituximab monotherapy is contraindicated if patients have symptomatic hyperviscosity; without preemptive plasmapheresis, this treatment should be avoided in those with very high serum IgM. They recommended a prompt start of therapeutic plasma exchange for hyperviscosity syndrome, before starting cytoreductive treatment. But rituximab is indicated when patients have symptomatic mild to moderate anemia, symptomatic cryoglobulinemia (in combination with steroids), or hemolytic anemia that does not respond to corticosteroids.
In cases of first or second relapse, autologous stem cell transplantation should be considered in patients with chemosensitive disease who are eligible for transplant, especially when the first remission duration was less than 2 years. Patients with refractory Waldenström macroglobulinemia should not be offered autologous stem cell transplantation.
Read the full set of recommendations in JAMA Oncology (2017 Sep 1;3[9]:1257-65).
[email protected]
On Twitter @maryellenny
, especially when rapid control is needed for bulky disease, according to treatment guidelines from a multidisciplinary expert panel.
The Mayo Clinic Cancer Center Myeloma, Amyloidosis, and Dysproteinemia and Lymphoma Disease-Oriented Groups, composed of experts who have collectively treated hundreds of patients with Waldenström macroglobulinemia, updated their recommendations for management of the condition in JAMA Oncology. It’s the first update from the group since 2010. The new treatment approaches are based on clinical and observational studies published or presented through December 2015 and consensus recommendations.
The Mayo group said dexamethasone-rituximab-cyclophosphamide can be an alternative treatment for patients with symptomatic Waldenström macroglobulinemia with a low disease burden. But because of an absence of data, the group said rituximab maintenance therapy is not recommended for routine use outside of clinical trials.
Rituximab monotherapy is contraindicated if patients have symptomatic hyperviscosity; without preemptive plasmapheresis, this treatment should be avoided in those with very high serum IgM. They recommended a prompt start of therapeutic plasma exchange for hyperviscosity syndrome, before starting cytoreductive treatment. But rituximab is indicated when patients have symptomatic mild to moderate anemia, symptomatic cryoglobulinemia (in combination with steroids), or hemolytic anemia that does not respond to corticosteroids.
In cases of first or second relapse, autologous stem cell transplantation should be considered in patients with chemosensitive disease who are eligible for transplant, especially when the first remission duration was less than 2 years. Patients with refractory Waldenström macroglobulinemia should not be offered autologous stem cell transplantation.
Read the full set of recommendations in JAMA Oncology (2017 Sep 1;3[9]:1257-65).
[email protected]
On Twitter @maryellenny
, especially when rapid control is needed for bulky disease, according to treatment guidelines from a multidisciplinary expert panel.
The Mayo Clinic Cancer Center Myeloma, Amyloidosis, and Dysproteinemia and Lymphoma Disease-Oriented Groups, composed of experts who have collectively treated hundreds of patients with Waldenström macroglobulinemia, updated their recommendations for management of the condition in JAMA Oncology. It’s the first update from the group since 2010. The new treatment approaches are based on clinical and observational studies published or presented through December 2015 and consensus recommendations.
The Mayo group said dexamethasone-rituximab-cyclophosphamide can be an alternative treatment for patients with symptomatic Waldenström macroglobulinemia with a low disease burden. But because of an absence of data, the group said rituximab maintenance therapy is not recommended for routine use outside of clinical trials.
Rituximab monotherapy is contraindicated if patients have symptomatic hyperviscosity; without preemptive plasmapheresis, this treatment should be avoided in those with very high serum IgM. They recommended a prompt start of therapeutic plasma exchange for hyperviscosity syndrome, before starting cytoreductive treatment. But rituximab is indicated when patients have symptomatic mild to moderate anemia, symptomatic cryoglobulinemia (in combination with steroids), or hemolytic anemia that does not respond to corticosteroids.
In cases of first or second relapse, autologous stem cell transplantation should be considered in patients with chemosensitive disease who are eligible for transplant, especially when the first remission duration was less than 2 years. Patients with refractory Waldenström macroglobulinemia should not be offered autologous stem cell transplantation.
Read the full set of recommendations in JAMA Oncology (2017 Sep 1;3[9]:1257-65).
[email protected]
On Twitter @maryellenny
FROM JAMA ONCOLOGY
FDA approves obinutuzumab for follicular lymphoma
The Food and Drug Administration has approved obinutuzumab in combination with chemotherapy, followed by obinutuzumab alone in those who responded, for people with previously untreated advanced follicular lymphoma (stage II bulky, III or IV).
The most common adverse events associated with obinutuzumab were infusion reactions, low white blood cell count, upper respiratory tract infection, cough, constipation, and diarrhea. The most common significant adverse events are low white blood cell count, low white blood cell count with fever, and low platelet count.
Obinutuzumab is marketed as Gazyva by Genentech.
“Today’s Gazyva approval is an important advance for the thousands of people diagnosed each year with follicular lymphoma who hope to delay disease progression for as long as possible,” said Sarah Horning, MD, chief medical officer and head of global product development at Genentech, in the company press release.
The Food and Drug Administration has approved obinutuzumab in combination with chemotherapy, followed by obinutuzumab alone in those who responded, for people with previously untreated advanced follicular lymphoma (stage II bulky, III or IV).
The most common adverse events associated with obinutuzumab were infusion reactions, low white blood cell count, upper respiratory tract infection, cough, constipation, and diarrhea. The most common significant adverse events are low white blood cell count, low white blood cell count with fever, and low platelet count.
Obinutuzumab is marketed as Gazyva by Genentech.
“Today’s Gazyva approval is an important advance for the thousands of people diagnosed each year with follicular lymphoma who hope to delay disease progression for as long as possible,” said Sarah Horning, MD, chief medical officer and head of global product development at Genentech, in the company press release.
The Food and Drug Administration has approved obinutuzumab in combination with chemotherapy, followed by obinutuzumab alone in those who responded, for people with previously untreated advanced follicular lymphoma (stage II bulky, III or IV).
The most common adverse events associated with obinutuzumab were infusion reactions, low white blood cell count, upper respiratory tract infection, cough, constipation, and diarrhea. The most common significant adverse events are low white blood cell count, low white blood cell count with fever, and low platelet count.
Obinutuzumab is marketed as Gazyva by Genentech.
“Today’s Gazyva approval is an important advance for the thousands of people diagnosed each year with follicular lymphoma who hope to delay disease progression for as long as possible,” said Sarah Horning, MD, chief medical officer and head of global product development at Genentech, in the company press release.
VCR regimen showed efficacy in mantle cell and indolent lymphomas
The combination of bortezomib, cladribine, and rituximab (VCR) was an effective treatment regimen for patients with CD20-positive mantle cell lymphoma (MCL) and indolent non-Hodgkin’s lymphoma (iNHL), based on results of a recent phase 2, open-label study.
The overall response rate was 92% in the single-center, 24-patient study. The 2-year progression-free survival (PFS) was 82% and 54%, respectively, for MCL and iNHL patients; PFS was 80% for treatment-naive patients and 57% for those with refractory/recalcitrant disease, according to Soham D. Puvvada, MD, of the University of Arizona Cancer Center in Tucson, and her associates.
Two-year overall survival was 91% for MCL and 69% for iNHL patients. Median time to progression was 34.5 months, and median PFS had not been reached at 2 years, according to the researchers.
While the study (NCT00980395) was small and limited by its single-center design, the VCR combination “has encouraging activity in both MCL and iNHL and could be compared to standard therapies in future studies,” the researchers wrote. “For MCL in particular, we believe a noninferiority comparison to standard therapies would be justified by our results.”
Adverse events were most commonly hematologic, and three patients experienced febrile neutropenia, data show.
“Although hematological toxicity can be an issue, the regimen provides an alternative option in transplant ineligible relapsed/refractory MCL and iNHL,” wrote Dr. Puvvada and her colleagues. The study was published in Clinical Lymphoma, Myeloma & Leukemia (doi: 10.1016/j.clml.2017.09.001).
The researchers studied the combination of bortezomib, the proteasome inhibitor initially approved for relapsed/refractory MCL, cladribine, which has shown activity and promising response rates in patients with indolent lymphomas, and rituximab in patients with CD20-positive mantle cell or indolent lymphoma.
Patients with follicular lymphomas were eligible to be included in the study if they had received at least one previous line of therapy. All other participants could be treatment naive or have relapsed after previous treatment.
Of the 24 patients enrolled, 11 had MCL, 5 had follicular lymphoma, 4 had marginal zone lymphoma, 3 had lymphoplasmacytic lymphoma, and 1 had small lymphocytic lymphoma.
The VCR regimen, given every 28 days for no more than six cycles, included rituximab at 375 mg/m2 given intravenously on day 1 of each cycle, cladribine 4 mg/m2 given intravenously over 2 hours on days 1 through 5, and bortezomib 1.3 mg/m2 given intravenously on days 1 and 4. Patients received a median of five cycles of therapy.
Adverse events of grade 3 or greater occurred in 14 patients (58%); 8 patients had leukopenia, 6 had thrombocytopenia, 5 had fatigue, and 5 had neutropenia, which included febrile neutropenia in 3 patients.
With a median follow-up of 38.5 months, overall response rate for VCR was 96%. Complete responses occurred in 8 of 23 evaluable patients (35%) and partial responses in 14 more patients (61%).
The combination of bortezomib, cladribine, and rituximab (VCR) was an effective treatment regimen for patients with CD20-positive mantle cell lymphoma (MCL) and indolent non-Hodgkin’s lymphoma (iNHL), based on results of a recent phase 2, open-label study.
The overall response rate was 92% in the single-center, 24-patient study. The 2-year progression-free survival (PFS) was 82% and 54%, respectively, for MCL and iNHL patients; PFS was 80% for treatment-naive patients and 57% for those with refractory/recalcitrant disease, according to Soham D. Puvvada, MD, of the University of Arizona Cancer Center in Tucson, and her associates.
Two-year overall survival was 91% for MCL and 69% for iNHL patients. Median time to progression was 34.5 months, and median PFS had not been reached at 2 years, according to the researchers.
While the study (NCT00980395) was small and limited by its single-center design, the VCR combination “has encouraging activity in both MCL and iNHL and could be compared to standard therapies in future studies,” the researchers wrote. “For MCL in particular, we believe a noninferiority comparison to standard therapies would be justified by our results.”
Adverse events were most commonly hematologic, and three patients experienced febrile neutropenia, data show.
“Although hematological toxicity can be an issue, the regimen provides an alternative option in transplant ineligible relapsed/refractory MCL and iNHL,” wrote Dr. Puvvada and her colleagues. The study was published in Clinical Lymphoma, Myeloma & Leukemia (doi: 10.1016/j.clml.2017.09.001).
The researchers studied the combination of bortezomib, the proteasome inhibitor initially approved for relapsed/refractory MCL, cladribine, which has shown activity and promising response rates in patients with indolent lymphomas, and rituximab in patients with CD20-positive mantle cell or indolent lymphoma.
Patients with follicular lymphomas were eligible to be included in the study if they had received at least one previous line of therapy. All other participants could be treatment naive or have relapsed after previous treatment.
Of the 24 patients enrolled, 11 had MCL, 5 had follicular lymphoma, 4 had marginal zone lymphoma, 3 had lymphoplasmacytic lymphoma, and 1 had small lymphocytic lymphoma.
The VCR regimen, given every 28 days for no more than six cycles, included rituximab at 375 mg/m2 given intravenously on day 1 of each cycle, cladribine 4 mg/m2 given intravenously over 2 hours on days 1 through 5, and bortezomib 1.3 mg/m2 given intravenously on days 1 and 4. Patients received a median of five cycles of therapy.
Adverse events of grade 3 or greater occurred in 14 patients (58%); 8 patients had leukopenia, 6 had thrombocytopenia, 5 had fatigue, and 5 had neutropenia, which included febrile neutropenia in 3 patients.
With a median follow-up of 38.5 months, overall response rate for VCR was 96%. Complete responses occurred in 8 of 23 evaluable patients (35%) and partial responses in 14 more patients (61%).
The combination of bortezomib, cladribine, and rituximab (VCR) was an effective treatment regimen for patients with CD20-positive mantle cell lymphoma (MCL) and indolent non-Hodgkin’s lymphoma (iNHL), based on results of a recent phase 2, open-label study.
The overall response rate was 92% in the single-center, 24-patient study. The 2-year progression-free survival (PFS) was 82% and 54%, respectively, for MCL and iNHL patients; PFS was 80% for treatment-naive patients and 57% for those with refractory/recalcitrant disease, according to Soham D. Puvvada, MD, of the University of Arizona Cancer Center in Tucson, and her associates.
Two-year overall survival was 91% for MCL and 69% for iNHL patients. Median time to progression was 34.5 months, and median PFS had not been reached at 2 years, according to the researchers.
While the study (NCT00980395) was small and limited by its single-center design, the VCR combination “has encouraging activity in both MCL and iNHL and could be compared to standard therapies in future studies,” the researchers wrote. “For MCL in particular, we believe a noninferiority comparison to standard therapies would be justified by our results.”
Adverse events were most commonly hematologic, and three patients experienced febrile neutropenia, data show.
“Although hematological toxicity can be an issue, the regimen provides an alternative option in transplant ineligible relapsed/refractory MCL and iNHL,” wrote Dr. Puvvada and her colleagues. The study was published in Clinical Lymphoma, Myeloma & Leukemia (doi: 10.1016/j.clml.2017.09.001).
The researchers studied the combination of bortezomib, the proteasome inhibitor initially approved for relapsed/refractory MCL, cladribine, which has shown activity and promising response rates in patients with indolent lymphomas, and rituximab in patients with CD20-positive mantle cell or indolent lymphoma.
Patients with follicular lymphomas were eligible to be included in the study if they had received at least one previous line of therapy. All other participants could be treatment naive or have relapsed after previous treatment.
Of the 24 patients enrolled, 11 had MCL, 5 had follicular lymphoma, 4 had marginal zone lymphoma, 3 had lymphoplasmacytic lymphoma, and 1 had small lymphocytic lymphoma.
The VCR regimen, given every 28 days for no more than six cycles, included rituximab at 375 mg/m2 given intravenously on day 1 of each cycle, cladribine 4 mg/m2 given intravenously over 2 hours on days 1 through 5, and bortezomib 1.3 mg/m2 given intravenously on days 1 and 4. Patients received a median of five cycles of therapy.
Adverse events of grade 3 or greater occurred in 14 patients (58%); 8 patients had leukopenia, 6 had thrombocytopenia, 5 had fatigue, and 5 had neutropenia, which included febrile neutropenia in 3 patients.
With a median follow-up of 38.5 months, overall response rate for VCR was 96%. Complete responses occurred in 8 of 23 evaluable patients (35%) and partial responses in 14 more patients (61%).
FROM LYMPHOMA, MYELOMA & LEUKEMIA
Key clinical point:
Major finding: The overall response rate was 92%, with a 2-year PFS of 82% and 54% for patients with mantle cell lymphoma (MCL) and indolent non-Hodgkin’s lymphoma (iNHL), respectively. Adverse events were most commonly hematologic, and three patients experienced febrile neutropenia.
Data source: A phase 2, open-label study including 24 patients with mantle cell or indolent lymphomas.
Disclosures: No disclosures were reported in the accepted manuscript.
FDA grants Priority Review to Gazyva for follicular lymphoma
Gazyva (obinutuzumab) has been granted a Priority Review by the Food and Drug Administration for the treatment of previously untreated follicular lymphoma, according to a press release from Genentech.
FDA approval was based on results from the GALLIUM study, a phase 3 trial comparing Gazyva to Rituxan (rituximab). Patients who received Gazyva plus chemotherapy followed by Gazyva therapy alone for 2 years had a 32% improvement in progression-free survival during the 41.1 month follow-up period, compared with the patient group who received Rituxan plus chemotherapy followed by 2 years of Rituxan therapy alone. Median progression-free survival has not been reached in either arm of the study.
The most common adverse events that occurred more often in the Gazyva arm of the study were low white blood cell count, infections, infusion-related reactions, low platelet count, new tumors, and cardiac events.
“Based on the GALLIUM study, Gazyva-based treatment significantly improved progression-free survival over the current standard of care, and we are committed to bringing this potential new option to patients as soon as possible,” Dr. Sandra Horning, chief medical officer and head of Genentech’s Global Product Development said in the press release.
The FDA is expected to make a decision on approval under Priority Review by Dec. 23, 2017.
Find the full press release on the Genentech website.
Gazyva (obinutuzumab) has been granted a Priority Review by the Food and Drug Administration for the treatment of previously untreated follicular lymphoma, according to a press release from Genentech.
FDA approval was based on results from the GALLIUM study, a phase 3 trial comparing Gazyva to Rituxan (rituximab). Patients who received Gazyva plus chemotherapy followed by Gazyva therapy alone for 2 years had a 32% improvement in progression-free survival during the 41.1 month follow-up period, compared with the patient group who received Rituxan plus chemotherapy followed by 2 years of Rituxan therapy alone. Median progression-free survival has not been reached in either arm of the study.
The most common adverse events that occurred more often in the Gazyva arm of the study were low white blood cell count, infections, infusion-related reactions, low platelet count, new tumors, and cardiac events.
“Based on the GALLIUM study, Gazyva-based treatment significantly improved progression-free survival over the current standard of care, and we are committed to bringing this potential new option to patients as soon as possible,” Dr. Sandra Horning, chief medical officer and head of Genentech’s Global Product Development said in the press release.
The FDA is expected to make a decision on approval under Priority Review by Dec. 23, 2017.
Find the full press release on the Genentech website.
Gazyva (obinutuzumab) has been granted a Priority Review by the Food and Drug Administration for the treatment of previously untreated follicular lymphoma, according to a press release from Genentech.
FDA approval was based on results from the GALLIUM study, a phase 3 trial comparing Gazyva to Rituxan (rituximab). Patients who received Gazyva plus chemotherapy followed by Gazyva therapy alone for 2 years had a 32% improvement in progression-free survival during the 41.1 month follow-up period, compared with the patient group who received Rituxan plus chemotherapy followed by 2 years of Rituxan therapy alone. Median progression-free survival has not been reached in either arm of the study.
The most common adverse events that occurred more often in the Gazyva arm of the study were low white blood cell count, infections, infusion-related reactions, low platelet count, new tumors, and cardiac events.
“Based on the GALLIUM study, Gazyva-based treatment significantly improved progression-free survival over the current standard of care, and we are committed to bringing this potential new option to patients as soon as possible,” Dr. Sandra Horning, chief medical officer and head of Genentech’s Global Product Development said in the press release.
The FDA is expected to make a decision on approval under Priority Review by Dec. 23, 2017.
Find the full press release on the Genentech website.
Copanlisib makes inroads against relapsed/refractory follicular lymphoma
LUGANO, SWITZERLAND – Copanlisib, an investigational intravenous inhibitor of phosphatidylinositol 3-kinase (PI3K), was associated with “promising” efficacy and a better safety profile than has been seen with oral PI3K inhibitors in patients with relapsed or refractory indolent lymphomas.
In a phase 2 trial of the drug as monotherapy in patients with indolent lymphomas, copanlisib was associated with an overall response rate of 58.6% among 104 patients with follicular lymphoma (FL), including 14.4% complete responses (CR) and 44.2% partial responses (PR), reported Martin Dreyling, MD, of the Universität München-Grosshadern in Munich, Germany.
“The favorable risk-benefit profile of this compound suggests further [need for] testing in follicular lymphoma. My personal interpretation is that the different safety profile is due to the intermittent dosing and the IV application, avoiding adverse cause-effect both in the gut and the liver,” he said at the 14th International Conference on Malignant Lymphoma.
Dr. Dreyling noted that the oral PI3K inhibitor idelalisib (Zydelig) is approved for the treatment of patients with relapsed chronic lymphocytic leukemia in combination with rituximab and in patients with relapsed FL or small lymphocytic lymphomas (SLL) who have received at least two prior lines of systemic therapy. This agent, however, carries a black box warning about fatal and serious toxicities, including hepatic events, severe diarrhea, colitis, pneumonitis, infections, and intestinal perforation.
Copanlisib inhibits all isoforms of P13K but is predominantly active against the alpha and delta isoforms of the kinase. The alpha form, expressed in many cell types, is involved in insulin signaling and angiogenesis and in resistance mechanisms to lymphoma. The delta form, expressed in leukocytes, is involved in B-cell signaling, development, and survival, making PIK3 an attractive target, Dr. Dreyling explained.
The study included patients with indolent B-cell lymphomas, including FL grades 1-3a, marginal zone lymphoma, SLL, or lymphoplasmacytic lymphoma/Waldenstrom macroglobulinemia (LPL/WM) for whom at least two prior lines of therapy had failed.
The patients received copanlisib 60 mg IV on days 1, 8, and 15 of each 28-day cycle until disease progression or unacceptable toxicity.
Of 142 assigned to and started on treatment, 46 patients (32.3%) remained on treatment at the time of data cutoff. Of the 96 patients (67.7%) who discontinued, 35 did so because of adverse events, 36 discontinued for radiologic or clinical evidence of progression, 16 withdrew, 5 were discontinued on the treating physician’s decision, and 4 stopped for other, unspecified reasons.
Among all 142 patients, the median duration of therapy was 22 weeks and the median number of cycles was 5.5. In all, 26.1% of patients required a dosage reduction to 45 mg, and 5.6% required reduction to 30 mg.
As noted, the objective tumor response rate (ORR) among patients was 58.6% for 104 patients with FL. For the 23 patients with marginal zone lymphoma, the ORR was 69.6%, consisting of two complete and 14 partial responses. Among eight patients with SLL, there were six partial responses and no complete responses. For the six patients with LPL/WM, there was one partial response.
The overall median duration of response was 22.6 months. Among patients with refractory disease and in all patients with FL the median duration of response was 12.2 months.
The median progression-free survival after 24 months of follow-up was 11.2 months for all patients. The median overall survival has not been reached.
The most frequent adverse events of grade 3 or 4 were hyperglycemia in 40.1% (33.1% grade 3 and 7.0% grade 4) and hypertension in 22.5% (all grade 3).
Grade 3 diarrhea, a significant problem with idelalisib, occurred in 4.2% of patients, and there were no grade 4 events.
Grade 3 pneumonitis was seen in two patients, and one had grade 4 colitis. There were three drug related deaths, including one patient each from lung infection, respiratory failure, or thromboembolic event..
The study was supported by Bayer. Dr. Dreyling disclosed receiving honoraria from the company and serving on a scientific/advisory board for the company.
LUGANO, SWITZERLAND – Copanlisib, an investigational intravenous inhibitor of phosphatidylinositol 3-kinase (PI3K), was associated with “promising” efficacy and a better safety profile than has been seen with oral PI3K inhibitors in patients with relapsed or refractory indolent lymphomas.
In a phase 2 trial of the drug as monotherapy in patients with indolent lymphomas, copanlisib was associated with an overall response rate of 58.6% among 104 patients with follicular lymphoma (FL), including 14.4% complete responses (CR) and 44.2% partial responses (PR), reported Martin Dreyling, MD, of the Universität München-Grosshadern in Munich, Germany.
“The favorable risk-benefit profile of this compound suggests further [need for] testing in follicular lymphoma. My personal interpretation is that the different safety profile is due to the intermittent dosing and the IV application, avoiding adverse cause-effect both in the gut and the liver,” he said at the 14th International Conference on Malignant Lymphoma.
Dr. Dreyling noted that the oral PI3K inhibitor idelalisib (Zydelig) is approved for the treatment of patients with relapsed chronic lymphocytic leukemia in combination with rituximab and in patients with relapsed FL or small lymphocytic lymphomas (SLL) who have received at least two prior lines of systemic therapy. This agent, however, carries a black box warning about fatal and serious toxicities, including hepatic events, severe diarrhea, colitis, pneumonitis, infections, and intestinal perforation.
Copanlisib inhibits all isoforms of P13K but is predominantly active against the alpha and delta isoforms of the kinase. The alpha form, expressed in many cell types, is involved in insulin signaling and angiogenesis and in resistance mechanisms to lymphoma. The delta form, expressed in leukocytes, is involved in B-cell signaling, development, and survival, making PIK3 an attractive target, Dr. Dreyling explained.
The study included patients with indolent B-cell lymphomas, including FL grades 1-3a, marginal zone lymphoma, SLL, or lymphoplasmacytic lymphoma/Waldenstrom macroglobulinemia (LPL/WM) for whom at least two prior lines of therapy had failed.
The patients received copanlisib 60 mg IV on days 1, 8, and 15 of each 28-day cycle until disease progression or unacceptable toxicity.
Of 142 assigned to and started on treatment, 46 patients (32.3%) remained on treatment at the time of data cutoff. Of the 96 patients (67.7%) who discontinued, 35 did so because of adverse events, 36 discontinued for radiologic or clinical evidence of progression, 16 withdrew, 5 were discontinued on the treating physician’s decision, and 4 stopped for other, unspecified reasons.
Among all 142 patients, the median duration of therapy was 22 weeks and the median number of cycles was 5.5. In all, 26.1% of patients required a dosage reduction to 45 mg, and 5.6% required reduction to 30 mg.
As noted, the objective tumor response rate (ORR) among patients was 58.6% for 104 patients with FL. For the 23 patients with marginal zone lymphoma, the ORR was 69.6%, consisting of two complete and 14 partial responses. Among eight patients with SLL, there were six partial responses and no complete responses. For the six patients with LPL/WM, there was one partial response.
The overall median duration of response was 22.6 months. Among patients with refractory disease and in all patients with FL the median duration of response was 12.2 months.
The median progression-free survival after 24 months of follow-up was 11.2 months for all patients. The median overall survival has not been reached.
The most frequent adverse events of grade 3 or 4 were hyperglycemia in 40.1% (33.1% grade 3 and 7.0% grade 4) and hypertension in 22.5% (all grade 3).
Grade 3 diarrhea, a significant problem with idelalisib, occurred in 4.2% of patients, and there were no grade 4 events.
Grade 3 pneumonitis was seen in two patients, and one had grade 4 colitis. There were three drug related deaths, including one patient each from lung infection, respiratory failure, or thromboembolic event..
The study was supported by Bayer. Dr. Dreyling disclosed receiving honoraria from the company and serving on a scientific/advisory board for the company.
LUGANO, SWITZERLAND – Copanlisib, an investigational intravenous inhibitor of phosphatidylinositol 3-kinase (PI3K), was associated with “promising” efficacy and a better safety profile than has been seen with oral PI3K inhibitors in patients with relapsed or refractory indolent lymphomas.
In a phase 2 trial of the drug as monotherapy in patients with indolent lymphomas, copanlisib was associated with an overall response rate of 58.6% among 104 patients with follicular lymphoma (FL), including 14.4% complete responses (CR) and 44.2% partial responses (PR), reported Martin Dreyling, MD, of the Universität München-Grosshadern in Munich, Germany.
“The favorable risk-benefit profile of this compound suggests further [need for] testing in follicular lymphoma. My personal interpretation is that the different safety profile is due to the intermittent dosing and the IV application, avoiding adverse cause-effect both in the gut and the liver,” he said at the 14th International Conference on Malignant Lymphoma.
Dr. Dreyling noted that the oral PI3K inhibitor idelalisib (Zydelig) is approved for the treatment of patients with relapsed chronic lymphocytic leukemia in combination with rituximab and in patients with relapsed FL or small lymphocytic lymphomas (SLL) who have received at least two prior lines of systemic therapy. This agent, however, carries a black box warning about fatal and serious toxicities, including hepatic events, severe diarrhea, colitis, pneumonitis, infections, and intestinal perforation.
Copanlisib inhibits all isoforms of P13K but is predominantly active against the alpha and delta isoforms of the kinase. The alpha form, expressed in many cell types, is involved in insulin signaling and angiogenesis and in resistance mechanisms to lymphoma. The delta form, expressed in leukocytes, is involved in B-cell signaling, development, and survival, making PIK3 an attractive target, Dr. Dreyling explained.
The study included patients with indolent B-cell lymphomas, including FL grades 1-3a, marginal zone lymphoma, SLL, or lymphoplasmacytic lymphoma/Waldenstrom macroglobulinemia (LPL/WM) for whom at least two prior lines of therapy had failed.
The patients received copanlisib 60 mg IV on days 1, 8, and 15 of each 28-day cycle until disease progression or unacceptable toxicity.
Of 142 assigned to and started on treatment, 46 patients (32.3%) remained on treatment at the time of data cutoff. Of the 96 patients (67.7%) who discontinued, 35 did so because of adverse events, 36 discontinued for radiologic or clinical evidence of progression, 16 withdrew, 5 were discontinued on the treating physician’s decision, and 4 stopped for other, unspecified reasons.
Among all 142 patients, the median duration of therapy was 22 weeks and the median number of cycles was 5.5. In all, 26.1% of patients required a dosage reduction to 45 mg, and 5.6% required reduction to 30 mg.
As noted, the objective tumor response rate (ORR) among patients was 58.6% for 104 patients with FL. For the 23 patients with marginal zone lymphoma, the ORR was 69.6%, consisting of two complete and 14 partial responses. Among eight patients with SLL, there were six partial responses and no complete responses. For the six patients with LPL/WM, there was one partial response.
The overall median duration of response was 22.6 months. Among patients with refractory disease and in all patients with FL the median duration of response was 12.2 months.
The median progression-free survival after 24 months of follow-up was 11.2 months for all patients. The median overall survival has not been reached.
The most frequent adverse events of grade 3 or 4 were hyperglycemia in 40.1% (33.1% grade 3 and 7.0% grade 4) and hypertension in 22.5% (all grade 3).
Grade 3 diarrhea, a significant problem with idelalisib, occurred in 4.2% of patients, and there were no grade 4 events.
Grade 3 pneumonitis was seen in two patients, and one had grade 4 colitis. There were three drug related deaths, including one patient each from lung infection, respiratory failure, or thromboembolic event..
The study was supported by Bayer. Dr. Dreyling disclosed receiving honoraria from the company and serving on a scientific/advisory board for the company.
AT 14-ICML
Key clinical point: Copanlisib, an intravenous PI3K inhibitor, was active against relapsed/refractory follicular lymphoma (FL).
Major finding: The overall response rate among 104 patients was 58.6%
Data source: A multicenter international phase 2 study in patients with relapsed/refractory indolent lymphomas
Disclosures: The study was supported by Bayer. Dr. Dreyling disclosed receiving honoraria from the company and serving on a scientific/advisory board for the company.
Ibrutinib/buparlisib looks good for relapsed mantle cell lymphoma
LUGANO, SWITZERLAND – A combination of the Bruton’s tyrosine kinase (BTK) ibrutinib (Imbruvica) and the pan-phosphoinositide 3-kinase (PI3K) inhibitor buparlisib showed clinical activity superior to that of single-agent ibrutinib in patients with relapsed/refractory mantle cell lymphoma (MCL).
In a phase I/IB dose escalation study and expansion cohort testing the combination in patients with diffuse large B cell lymphoma (DLBCL), follicular lymphoma, and MCL, the overall response rate (ORR) among patients with MCL was 100%, consisting of complete responses (CR) in 8 of 11 patients, and partial responses (PR) in 3 patients, reported Connie Lee Batlevi, MD, of Memorial Sloan Kettering Cancer Center in New York.
In contrast, the response rate to ibrutinib monotherapy among patients with relapsed MCL is around 20%, she said.
Preclinical studies have demonstrated synergism between BTK inhibitors and PI3K inhibitors in B-cell non-Hodgkin lymphoma (NHL), prompting the investigators to look into the combination in patients with relapsed or refractory DLBCL, follicular lymphoma (FL), and MCL.
They enrolled 25 patients (9 with DLBCL, 5 with FL, and 11 with MCL). The patients received escalating doses of once daily ibrutinib and buparlisib in three dose levels (ibrutinib 420-560 mg; buparlisib 80-100 mg). Dose level 3, consisting of ibrutinib 560 mg and buparlisib 100 mg, was selected for dose expansion based on one of six patients developing a dose-limiting toxicity.
Using the Lugano Response Criteria, the overall ORR (all histologies) was 52%. Among nine patients with DLBCL, the ORR was 11%, with one CR and no PR. Among five patients with FL, the ORR was 20%, consisting of one CR and no PR.
Among 11 patients with MCL, however, the ORR was far more impressive, at 100%, including eight CR and three PR. No patients with MCL had either stable or progressive disease.
Under the RECIL (International Working Group) criteria, the ORR was 48% including one CR each for DLBCL and FL, and eight CR and two PR for patients with MCL.
In the safety analysis, there were two dose-limiting toxicities in the lowest and highest dose groups, but none at dose level 2 (ibrutinib 560 mg and buparlisib 80 mg).
Grade 3 or greater adverse events occurred in 63% of patients. The most common events were hyperglycemia and rash in 19% each, and diarrhea, anorexia, and neurologic changes in 11% each,
The grade 3 neurologic changes included depression, agitation, mood swings, confusion and memory impairment, all of which resolved after buparlisib was withdrawn.
Dr. Batlevi showed scans of two patients with representative clinical responses in MCL. One 55-year-old man with blastoid MCL who had relapsed 18 months after frontline therapy with ofatumumab and bendamustine had near total clearance of lesions after two cycles of ibrutinib and buparlisib. He remains in CR after 12 months on the combination.
A second patient, a 77-year-old man with MCL that relapsed 10 years after R-CHOP and rituximab maintenance followed by autologous stem cell transplant, showed a complete response upon restaging after two cycles of ibrutinib/buparlisib.
The investigators are currently enrolling patients for phase IB expansions, with the goal of better estimating the safety and efficacy of the combination.
Memorial Sloan Kettering Cancer Center sponsored the study, with support from Janssen and Novartis. Dr. Batlevi reported no conflicts of interest.
LUGANO, SWITZERLAND – A combination of the Bruton’s tyrosine kinase (BTK) ibrutinib (Imbruvica) and the pan-phosphoinositide 3-kinase (PI3K) inhibitor buparlisib showed clinical activity superior to that of single-agent ibrutinib in patients with relapsed/refractory mantle cell lymphoma (MCL).
In a phase I/IB dose escalation study and expansion cohort testing the combination in patients with diffuse large B cell lymphoma (DLBCL), follicular lymphoma, and MCL, the overall response rate (ORR) among patients with MCL was 100%, consisting of complete responses (CR) in 8 of 11 patients, and partial responses (PR) in 3 patients, reported Connie Lee Batlevi, MD, of Memorial Sloan Kettering Cancer Center in New York.
In contrast, the response rate to ibrutinib monotherapy among patients with relapsed MCL is around 20%, she said.
Preclinical studies have demonstrated synergism between BTK inhibitors and PI3K inhibitors in B-cell non-Hodgkin lymphoma (NHL), prompting the investigators to look into the combination in patients with relapsed or refractory DLBCL, follicular lymphoma (FL), and MCL.
They enrolled 25 patients (9 with DLBCL, 5 with FL, and 11 with MCL). The patients received escalating doses of once daily ibrutinib and buparlisib in three dose levels (ibrutinib 420-560 mg; buparlisib 80-100 mg). Dose level 3, consisting of ibrutinib 560 mg and buparlisib 100 mg, was selected for dose expansion based on one of six patients developing a dose-limiting toxicity.
Using the Lugano Response Criteria, the overall ORR (all histologies) was 52%. Among nine patients with DLBCL, the ORR was 11%, with one CR and no PR. Among five patients with FL, the ORR was 20%, consisting of one CR and no PR.
Among 11 patients with MCL, however, the ORR was far more impressive, at 100%, including eight CR and three PR. No patients with MCL had either stable or progressive disease.
Under the RECIL (International Working Group) criteria, the ORR was 48% including one CR each for DLBCL and FL, and eight CR and two PR for patients with MCL.
In the safety analysis, there were two dose-limiting toxicities in the lowest and highest dose groups, but none at dose level 2 (ibrutinib 560 mg and buparlisib 80 mg).
Grade 3 or greater adverse events occurred in 63% of patients. The most common events were hyperglycemia and rash in 19% each, and diarrhea, anorexia, and neurologic changes in 11% each,
The grade 3 neurologic changes included depression, agitation, mood swings, confusion and memory impairment, all of which resolved after buparlisib was withdrawn.
Dr. Batlevi showed scans of two patients with representative clinical responses in MCL. One 55-year-old man with blastoid MCL who had relapsed 18 months after frontline therapy with ofatumumab and bendamustine had near total clearance of lesions after two cycles of ibrutinib and buparlisib. He remains in CR after 12 months on the combination.
A second patient, a 77-year-old man with MCL that relapsed 10 years after R-CHOP and rituximab maintenance followed by autologous stem cell transplant, showed a complete response upon restaging after two cycles of ibrutinib/buparlisib.
The investigators are currently enrolling patients for phase IB expansions, with the goal of better estimating the safety and efficacy of the combination.
Memorial Sloan Kettering Cancer Center sponsored the study, with support from Janssen and Novartis. Dr. Batlevi reported no conflicts of interest.
LUGANO, SWITZERLAND – A combination of the Bruton’s tyrosine kinase (BTK) ibrutinib (Imbruvica) and the pan-phosphoinositide 3-kinase (PI3K) inhibitor buparlisib showed clinical activity superior to that of single-agent ibrutinib in patients with relapsed/refractory mantle cell lymphoma (MCL).
In a phase I/IB dose escalation study and expansion cohort testing the combination in patients with diffuse large B cell lymphoma (DLBCL), follicular lymphoma, and MCL, the overall response rate (ORR) among patients with MCL was 100%, consisting of complete responses (CR) in 8 of 11 patients, and partial responses (PR) in 3 patients, reported Connie Lee Batlevi, MD, of Memorial Sloan Kettering Cancer Center in New York.
In contrast, the response rate to ibrutinib monotherapy among patients with relapsed MCL is around 20%, she said.
Preclinical studies have demonstrated synergism between BTK inhibitors and PI3K inhibitors in B-cell non-Hodgkin lymphoma (NHL), prompting the investigators to look into the combination in patients with relapsed or refractory DLBCL, follicular lymphoma (FL), and MCL.
They enrolled 25 patients (9 with DLBCL, 5 with FL, and 11 with MCL). The patients received escalating doses of once daily ibrutinib and buparlisib in three dose levels (ibrutinib 420-560 mg; buparlisib 80-100 mg). Dose level 3, consisting of ibrutinib 560 mg and buparlisib 100 mg, was selected for dose expansion based on one of six patients developing a dose-limiting toxicity.
Using the Lugano Response Criteria, the overall ORR (all histologies) was 52%. Among nine patients with DLBCL, the ORR was 11%, with one CR and no PR. Among five patients with FL, the ORR was 20%, consisting of one CR and no PR.
Among 11 patients with MCL, however, the ORR was far more impressive, at 100%, including eight CR and three PR. No patients with MCL had either stable or progressive disease.
Under the RECIL (International Working Group) criteria, the ORR was 48% including one CR each for DLBCL and FL, and eight CR and two PR for patients with MCL.
In the safety analysis, there were two dose-limiting toxicities in the lowest and highest dose groups, but none at dose level 2 (ibrutinib 560 mg and buparlisib 80 mg).
Grade 3 or greater adverse events occurred in 63% of patients. The most common events were hyperglycemia and rash in 19% each, and diarrhea, anorexia, and neurologic changes in 11% each,
The grade 3 neurologic changes included depression, agitation, mood swings, confusion and memory impairment, all of which resolved after buparlisib was withdrawn.
Dr. Batlevi showed scans of two patients with representative clinical responses in MCL. One 55-year-old man with blastoid MCL who had relapsed 18 months after frontline therapy with ofatumumab and bendamustine had near total clearance of lesions after two cycles of ibrutinib and buparlisib. He remains in CR after 12 months on the combination.
A second patient, a 77-year-old man with MCL that relapsed 10 years after R-CHOP and rituximab maintenance followed by autologous stem cell transplant, showed a complete response upon restaging after two cycles of ibrutinib/buparlisib.
The investigators are currently enrolling patients for phase IB expansions, with the goal of better estimating the safety and efficacy of the combination.
Memorial Sloan Kettering Cancer Center sponsored the study, with support from Janssen and Novartis. Dr. Batlevi reported no conflicts of interest.
AT 14-ICML
Key clinical point: The combination of ibrutinib and buparlisib showed efficacy against mantle cell lymphoma in a dose-escalation and safety study,
Major finding: The overall response rate to the combination among 11 patients with relapsed MCL was 100%.
Data source: Open label phase I/IB study of 25 patients with B-cell lymphomas.
Disclosures: Memorial Sloan Kettering Cancer Center sponsored the study, with support from Janssen and Novartis. Dr. Batlevi reported no conflicts of interest.
Pembrolizumab + rituximab boost response rates in relapsed follicular lymphoma
LUGANO, SWITZERLAND – A novel combination of the anti-programmed death 1 (PD-1) checkpoint inhibitor pembrolizumab (Keytruda) and the anti-CD20 monoclonal antibody rituximab was associated with a high overall response rate (ORR) in patients with relapsed follicular lymphoma in a phase II clinical trial.
Among 20 patients evaluable for efficacy, the overall response rate to the combination was 65%, including 50% complete responses (CR) reported Loretta J. Nastoupil, MD, of the University of Texas MD Anderson Cancer Center in Houston.
“Follicular lymphoma is probably one of the best examples of targeting the immune system and also one of the earliest examples. Over the last few years we’ve learned a great deal about the different mechanisms of not only negative impact on infiltrating T cells, but also immune escape and T-cell exhaustion,” she said at the International Conference on Malignant Lymphoma.
Although biopsies of follicular lymphoma tumors have demonstrated infiltration of anti-tumor T cells, these cells are typically impeded by immune checkpoints, including PD-1 and its ligand (PD-L1).
The use of anti-PD-1 checkpoint inhibitors such as pembrolizumab has been shown to enhance the function of antitumor T cells in follicular lymphoma, and blocking PD-1 on natural killer cells enhances the antibody-dependent cell-mediated cytotoxicity of the natural killer cells, she said.
Because rituximab, a mainstay of therapy for non-Hodgkin lymphomas, induces antibody-dependent cell-mediated cytotoxicity, the investigators reasoned that combining it with pembrolizumab would simultaneously and synergistically stimulate activation of innate and adaptive immunity.
They designed a phase II, single-arm study in 30 patients with relapsed follicular lymphoma following one or more prior lines of therapy. The patients also had to have rituximab-sensitive disease, defined as a complete response (CR) or partial response lasting for at least 6 months following the most recent rituximab-containing therapy.
The patients were treated with rituximab 375 mg/m2 IV on days 1, 8, 15, and 22 of cycle 1, and pembrolizumab 200 mg IV every 3 weeks for up to 16 cycles starting on day 2 of cycle 1.
The investigators expected that the combination would improve ORR, the primary endpoint, to at least 60%, compared with 40% for historical controls treated with repeat courses of rituximab.
At the data cutoff for the interim analysis, 32 patients had been enrolled, 30 were evaluable for safety, and 20 for efficacy after a median follow-up of 8.2 months.
Among the 20 patients (median age 64) in the efficacy analysis, 10 (50%) had a CR, and 3 (15%) had a partial response, for an ORR of 65%. Three additional patients had stable disease, and four had disease progression as best responses.
Among the patients with CRs, the duration of response ranged from nearly 275 days to more than 600 days.
“This does appear to be durable, and it is time dependent in terms of response. We did see early response, and we also saw deepening of response over time,” Dr. Nastoupil said.
Four patients were discontinued from the study because of immune-related adverse events. All four patients had achieved a CR at the time of study removal, and all four have ongoing CRs.
Among the 30 patients evaluable for safety, there were no grade 4 adverse events, no deaths, and few grade 3 events. Most events were grade 1 or 2, and included fatigue, eye pain/blurred vision/watery eye, nausea and vomiting, diarrhea dyspnea, rash, cough, and lymphopenia.
The investigators also looked at potential biomarkers for response, including PD-L1 expression in tumors prior to treatment. They found in samples from three patients who went on to achieve CRs that PD-L1 expression in tumor cells was low, ranging from 0% to 8%, suggesting that PD-L1 expression may not be necessary to generate a response with the combination.
They then looked at the association between CD8-positive T effector cells and responses in 12 patients, and found that patients with higher levels of expression had better ORR and CR rates.
“These interim results warrant further investigation of this combination in follicular lymphoma, and an expansion to include patients with refractory follicular lymphoma is planned,” Dr. Nastoupil concluded.
The Leukemia & Lymphoma Society supported the study. Dr Nastoupil has disclosed consulting fees from Celgene and contracted research for Abbvie, Janssen, and TG Therapeutics.
LUGANO, SWITZERLAND – A novel combination of the anti-programmed death 1 (PD-1) checkpoint inhibitor pembrolizumab (Keytruda) and the anti-CD20 monoclonal antibody rituximab was associated with a high overall response rate (ORR) in patients with relapsed follicular lymphoma in a phase II clinical trial.
Among 20 patients evaluable for efficacy, the overall response rate to the combination was 65%, including 50% complete responses (CR) reported Loretta J. Nastoupil, MD, of the University of Texas MD Anderson Cancer Center in Houston.
“Follicular lymphoma is probably one of the best examples of targeting the immune system and also one of the earliest examples. Over the last few years we’ve learned a great deal about the different mechanisms of not only negative impact on infiltrating T cells, but also immune escape and T-cell exhaustion,” she said at the International Conference on Malignant Lymphoma.
Although biopsies of follicular lymphoma tumors have demonstrated infiltration of anti-tumor T cells, these cells are typically impeded by immune checkpoints, including PD-1 and its ligand (PD-L1).
The use of anti-PD-1 checkpoint inhibitors such as pembrolizumab has been shown to enhance the function of antitumor T cells in follicular lymphoma, and blocking PD-1 on natural killer cells enhances the antibody-dependent cell-mediated cytotoxicity of the natural killer cells, she said.
Because rituximab, a mainstay of therapy for non-Hodgkin lymphomas, induces antibody-dependent cell-mediated cytotoxicity, the investigators reasoned that combining it with pembrolizumab would simultaneously and synergistically stimulate activation of innate and adaptive immunity.
They designed a phase II, single-arm study in 30 patients with relapsed follicular lymphoma following one or more prior lines of therapy. The patients also had to have rituximab-sensitive disease, defined as a complete response (CR) or partial response lasting for at least 6 months following the most recent rituximab-containing therapy.
The patients were treated with rituximab 375 mg/m2 IV on days 1, 8, 15, and 22 of cycle 1, and pembrolizumab 200 mg IV every 3 weeks for up to 16 cycles starting on day 2 of cycle 1.
The investigators expected that the combination would improve ORR, the primary endpoint, to at least 60%, compared with 40% for historical controls treated with repeat courses of rituximab.
At the data cutoff for the interim analysis, 32 patients had been enrolled, 30 were evaluable for safety, and 20 for efficacy after a median follow-up of 8.2 months.
Among the 20 patients (median age 64) in the efficacy analysis, 10 (50%) had a CR, and 3 (15%) had a partial response, for an ORR of 65%. Three additional patients had stable disease, and four had disease progression as best responses.
Among the patients with CRs, the duration of response ranged from nearly 275 days to more than 600 days.
“This does appear to be durable, and it is time dependent in terms of response. We did see early response, and we also saw deepening of response over time,” Dr. Nastoupil said.
Four patients were discontinued from the study because of immune-related adverse events. All four patients had achieved a CR at the time of study removal, and all four have ongoing CRs.
Among the 30 patients evaluable for safety, there were no grade 4 adverse events, no deaths, and few grade 3 events. Most events were grade 1 or 2, and included fatigue, eye pain/blurred vision/watery eye, nausea and vomiting, diarrhea dyspnea, rash, cough, and lymphopenia.
The investigators also looked at potential biomarkers for response, including PD-L1 expression in tumors prior to treatment. They found in samples from three patients who went on to achieve CRs that PD-L1 expression in tumor cells was low, ranging from 0% to 8%, suggesting that PD-L1 expression may not be necessary to generate a response with the combination.
They then looked at the association between CD8-positive T effector cells and responses in 12 patients, and found that patients with higher levels of expression had better ORR and CR rates.
“These interim results warrant further investigation of this combination in follicular lymphoma, and an expansion to include patients with refractory follicular lymphoma is planned,” Dr. Nastoupil concluded.
The Leukemia & Lymphoma Society supported the study. Dr Nastoupil has disclosed consulting fees from Celgene and contracted research for Abbvie, Janssen, and TG Therapeutics.
LUGANO, SWITZERLAND – A novel combination of the anti-programmed death 1 (PD-1) checkpoint inhibitor pembrolizumab (Keytruda) and the anti-CD20 monoclonal antibody rituximab was associated with a high overall response rate (ORR) in patients with relapsed follicular lymphoma in a phase II clinical trial.
Among 20 patients evaluable for efficacy, the overall response rate to the combination was 65%, including 50% complete responses (CR) reported Loretta J. Nastoupil, MD, of the University of Texas MD Anderson Cancer Center in Houston.
“Follicular lymphoma is probably one of the best examples of targeting the immune system and also one of the earliest examples. Over the last few years we’ve learned a great deal about the different mechanisms of not only negative impact on infiltrating T cells, but also immune escape and T-cell exhaustion,” she said at the International Conference on Malignant Lymphoma.
Although biopsies of follicular lymphoma tumors have demonstrated infiltration of anti-tumor T cells, these cells are typically impeded by immune checkpoints, including PD-1 and its ligand (PD-L1).
The use of anti-PD-1 checkpoint inhibitors such as pembrolizumab has been shown to enhance the function of antitumor T cells in follicular lymphoma, and blocking PD-1 on natural killer cells enhances the antibody-dependent cell-mediated cytotoxicity of the natural killer cells, she said.
Because rituximab, a mainstay of therapy for non-Hodgkin lymphomas, induces antibody-dependent cell-mediated cytotoxicity, the investigators reasoned that combining it with pembrolizumab would simultaneously and synergistically stimulate activation of innate and adaptive immunity.
They designed a phase II, single-arm study in 30 patients with relapsed follicular lymphoma following one or more prior lines of therapy. The patients also had to have rituximab-sensitive disease, defined as a complete response (CR) or partial response lasting for at least 6 months following the most recent rituximab-containing therapy.
The patients were treated with rituximab 375 mg/m2 IV on days 1, 8, 15, and 22 of cycle 1, and pembrolizumab 200 mg IV every 3 weeks for up to 16 cycles starting on day 2 of cycle 1.
The investigators expected that the combination would improve ORR, the primary endpoint, to at least 60%, compared with 40% for historical controls treated with repeat courses of rituximab.
At the data cutoff for the interim analysis, 32 patients had been enrolled, 30 were evaluable for safety, and 20 for efficacy after a median follow-up of 8.2 months.
Among the 20 patients (median age 64) in the efficacy analysis, 10 (50%) had a CR, and 3 (15%) had a partial response, for an ORR of 65%. Three additional patients had stable disease, and four had disease progression as best responses.
Among the patients with CRs, the duration of response ranged from nearly 275 days to more than 600 days.
“This does appear to be durable, and it is time dependent in terms of response. We did see early response, and we also saw deepening of response over time,” Dr. Nastoupil said.
Four patients were discontinued from the study because of immune-related adverse events. All four patients had achieved a CR at the time of study removal, and all four have ongoing CRs.
Among the 30 patients evaluable for safety, there were no grade 4 adverse events, no deaths, and few grade 3 events. Most events were grade 1 or 2, and included fatigue, eye pain/blurred vision/watery eye, nausea and vomiting, diarrhea dyspnea, rash, cough, and lymphopenia.
The investigators also looked at potential biomarkers for response, including PD-L1 expression in tumors prior to treatment. They found in samples from three patients who went on to achieve CRs that PD-L1 expression in tumor cells was low, ranging from 0% to 8%, suggesting that PD-L1 expression may not be necessary to generate a response with the combination.
They then looked at the association between CD8-positive T effector cells and responses in 12 patients, and found that patients with higher levels of expression had better ORR and CR rates.
“These interim results warrant further investigation of this combination in follicular lymphoma, and an expansion to include patients with refractory follicular lymphoma is planned,” Dr. Nastoupil concluded.
The Leukemia & Lymphoma Society supported the study. Dr Nastoupil has disclosed consulting fees from Celgene and contracted research for Abbvie, Janssen, and TG Therapeutics.
AT 14-ICML
Key clinical point: The combination of pembrolizumab and rituximab increased responses compared with repeat rituximab in patients with relapsed follicular lymphoma.
Major finding: The overall response rate with the combination was 65%, including 50% complete responses.
Data source: Open-label, phase II, single-arm study in 32 patients with relapsed follicular lymphoma (20 for efficacy, 30 for safety analysis).
Disclosures: The Leukemia & Lymphoma Society supported the study. Dr Nastoupil has disclosed consulting fees from Celgene and contracted research for Abbvie, Janssen, and TG Therapeutics.
Bendamustine plus rituximab may have edge for treating indolent NHL, MCL
CHICAGO – Overall survival was comparable at 5 years of follow up for three regimens in treatment-naive patients with indolent non-Hodgkin lymphoma (NHL) or mantle cell lymphoma (MCL), based on long-term results from the BRIGHT study.
While progression-free survival, event-free survival, and duration of response were significantly better with bendamustine plus rituximab (BR), overall survival at 5 years did not significantly differ in patients given this regimen and compared to patients given rituximab plus cyclophosphamide, doxorubicin, vincristine, and prednisone (R-CHOP) or rituximab with cyclophosphamide, vincristine and prednisone (R-CVP), Ian Flinn, MD, of Tennessee Oncology, Nashville, reported at the annual meeting of the American Society of Clinical Oncology.
Quality of life was somewhat better for the patients given BR, but those patients were also at higher risk for secondary malignancies (42 vs. 24), most of which were squamous cell carcinomas, observed Dr. Kahl, professor of medicine at Washington University, St. Louis.
In BRIGHT, 224 treatment-naive patients with indolent NHL or MCL were randomized to receive BR and were compared to 223 similar patients who received either R-CHOP (104 patients) or R-CVP (119 patients). At least six cycles of therapy were completed by 203 patients in the BR group and by 196 in the R-CHOP/R-CVP group. Rituximab maintenance therapy was given to 43% of the BR group and to 45% of the R-CHOP/R-CVP group.
For BR and R-CHOP/R-CVP, the 5-year progression-free survival rate was 65.5% (95% CI, 58.5-71.6) and 55.8% (95% CI, 48.4-62.5), respectively. The overall survival rate for the entire patient group was 81.7% (75.7-86.3) and 85% (79.3-89.3) respectively. Comparing BR and R-CHOP/R-CVP, the hazard ratio (95% CI) for progression-free survival was 0.61 (0.45-0.85; P = .0025), the HR for event-free survival was 0.63 (0.46-0.84; P = .0020), the HR for duration of response was 0.66 (0.47-0.92; P = .0134), and the HR for overall survival was 1.15 (0.72-1.84; P = .5461).
Similar results were found in indolent NHL (progression-free survival 0.70 [0.49-1.01; P = .0582]) and MCL (progression-free survival 0.40 [0.21-0.75; P = .0035]), with the strongest effect in MCL, Dr. Flinn said.
Dr. Kahl noted that the advantages for the BR regimen include that it is not associated with alopecia, neuropathy, or steroid issues, and that it may extend progression-free survival and time to next treatment. On the other hand, R-CHOP is associated with less GI toxicity, rash, opportunistic infections, and prolonged cytopenia. Also, the BR regimen was associated with a higher risk of secondary cancers, primarily squamous cell carcinomas.
There were 42 secondary malignancies in the BR group and 24 in the R-CHOP/R-CVP group, Dr. Flinn reported.
It is theoretically possible that BR equals R-CHOP plus maintenance therapy from an efficacy perspective, Dr. Kahl said.
As virtually all excess adverse event fatalities occurred during maintenance therapy, it is possible that maintenance therapy after BR “does more harm than good.” This high priority issue “should be evaluated in the BRIGHT data set,” Dr. Kahl recommended.
Teva Branded Pharmaceutical Products R&D sponsored the study. Dr. Flinn had no relationships to disclose; two of his fellow researchers are Teva employees. Dr. Kahl disclosed serving as an adviser or consultant to Abbvie, Acerta Pharma, Celgene, Cell Therapeutics, Genentech/Roche, Incyte, Infinity Pharmaceuticals, Juno Therapeutics, Millennium, Pharmacyclics, Sandoz, and Seattle Genetics.
[email protected]
On Twitter @maryjodales
CHICAGO – Overall survival was comparable at 5 years of follow up for three regimens in treatment-naive patients with indolent non-Hodgkin lymphoma (NHL) or mantle cell lymphoma (MCL), based on long-term results from the BRIGHT study.
While progression-free survival, event-free survival, and duration of response were significantly better with bendamustine plus rituximab (BR), overall survival at 5 years did not significantly differ in patients given this regimen and compared to patients given rituximab plus cyclophosphamide, doxorubicin, vincristine, and prednisone (R-CHOP) or rituximab with cyclophosphamide, vincristine and prednisone (R-CVP), Ian Flinn, MD, of Tennessee Oncology, Nashville, reported at the annual meeting of the American Society of Clinical Oncology.
Quality of life was somewhat better for the patients given BR, but those patients were also at higher risk for secondary malignancies (42 vs. 24), most of which were squamous cell carcinomas, observed Dr. Kahl, professor of medicine at Washington University, St. Louis.
In BRIGHT, 224 treatment-naive patients with indolent NHL or MCL were randomized to receive BR and were compared to 223 similar patients who received either R-CHOP (104 patients) or R-CVP (119 patients). At least six cycles of therapy were completed by 203 patients in the BR group and by 196 in the R-CHOP/R-CVP group. Rituximab maintenance therapy was given to 43% of the BR group and to 45% of the R-CHOP/R-CVP group.
For BR and R-CHOP/R-CVP, the 5-year progression-free survival rate was 65.5% (95% CI, 58.5-71.6) and 55.8% (95% CI, 48.4-62.5), respectively. The overall survival rate for the entire patient group was 81.7% (75.7-86.3) and 85% (79.3-89.3) respectively. Comparing BR and R-CHOP/R-CVP, the hazard ratio (95% CI) for progression-free survival was 0.61 (0.45-0.85; P = .0025), the HR for event-free survival was 0.63 (0.46-0.84; P = .0020), the HR for duration of response was 0.66 (0.47-0.92; P = .0134), and the HR for overall survival was 1.15 (0.72-1.84; P = .5461).
Similar results were found in indolent NHL (progression-free survival 0.70 [0.49-1.01; P = .0582]) and MCL (progression-free survival 0.40 [0.21-0.75; P = .0035]), with the strongest effect in MCL, Dr. Flinn said.
Dr. Kahl noted that the advantages for the BR regimen include that it is not associated with alopecia, neuropathy, or steroid issues, and that it may extend progression-free survival and time to next treatment. On the other hand, R-CHOP is associated with less GI toxicity, rash, opportunistic infections, and prolonged cytopenia. Also, the BR regimen was associated with a higher risk of secondary cancers, primarily squamous cell carcinomas.
There were 42 secondary malignancies in the BR group and 24 in the R-CHOP/R-CVP group, Dr. Flinn reported.
It is theoretically possible that BR equals R-CHOP plus maintenance therapy from an efficacy perspective, Dr. Kahl said.
As virtually all excess adverse event fatalities occurred during maintenance therapy, it is possible that maintenance therapy after BR “does more harm than good.” This high priority issue “should be evaluated in the BRIGHT data set,” Dr. Kahl recommended.
Teva Branded Pharmaceutical Products R&D sponsored the study. Dr. Flinn had no relationships to disclose; two of his fellow researchers are Teva employees. Dr. Kahl disclosed serving as an adviser or consultant to Abbvie, Acerta Pharma, Celgene, Cell Therapeutics, Genentech/Roche, Incyte, Infinity Pharmaceuticals, Juno Therapeutics, Millennium, Pharmacyclics, Sandoz, and Seattle Genetics.
[email protected]
On Twitter @maryjodales
CHICAGO – Overall survival was comparable at 5 years of follow up for three regimens in treatment-naive patients with indolent non-Hodgkin lymphoma (NHL) or mantle cell lymphoma (MCL), based on long-term results from the BRIGHT study.
While progression-free survival, event-free survival, and duration of response were significantly better with bendamustine plus rituximab (BR), overall survival at 5 years did not significantly differ in patients given this regimen and compared to patients given rituximab plus cyclophosphamide, doxorubicin, vincristine, and prednisone (R-CHOP) or rituximab with cyclophosphamide, vincristine and prednisone (R-CVP), Ian Flinn, MD, of Tennessee Oncology, Nashville, reported at the annual meeting of the American Society of Clinical Oncology.
Quality of life was somewhat better for the patients given BR, but those patients were also at higher risk for secondary malignancies (42 vs. 24), most of which were squamous cell carcinomas, observed Dr. Kahl, professor of medicine at Washington University, St. Louis.
In BRIGHT, 224 treatment-naive patients with indolent NHL or MCL were randomized to receive BR and were compared to 223 similar patients who received either R-CHOP (104 patients) or R-CVP (119 patients). At least six cycles of therapy were completed by 203 patients in the BR group and by 196 in the R-CHOP/R-CVP group. Rituximab maintenance therapy was given to 43% of the BR group and to 45% of the R-CHOP/R-CVP group.
For BR and R-CHOP/R-CVP, the 5-year progression-free survival rate was 65.5% (95% CI, 58.5-71.6) and 55.8% (95% CI, 48.4-62.5), respectively. The overall survival rate for the entire patient group was 81.7% (75.7-86.3) and 85% (79.3-89.3) respectively. Comparing BR and R-CHOP/R-CVP, the hazard ratio (95% CI) for progression-free survival was 0.61 (0.45-0.85; P = .0025), the HR for event-free survival was 0.63 (0.46-0.84; P = .0020), the HR for duration of response was 0.66 (0.47-0.92; P = .0134), and the HR for overall survival was 1.15 (0.72-1.84; P = .5461).
Similar results were found in indolent NHL (progression-free survival 0.70 [0.49-1.01; P = .0582]) and MCL (progression-free survival 0.40 [0.21-0.75; P = .0035]), with the strongest effect in MCL, Dr. Flinn said.
Dr. Kahl noted that the advantages for the BR regimen include that it is not associated with alopecia, neuropathy, or steroid issues, and that it may extend progression-free survival and time to next treatment. On the other hand, R-CHOP is associated with less GI toxicity, rash, opportunistic infections, and prolonged cytopenia. Also, the BR regimen was associated with a higher risk of secondary cancers, primarily squamous cell carcinomas.
There were 42 secondary malignancies in the BR group and 24 in the R-CHOP/R-CVP group, Dr. Flinn reported.
It is theoretically possible that BR equals R-CHOP plus maintenance therapy from an efficacy perspective, Dr. Kahl said.
As virtually all excess adverse event fatalities occurred during maintenance therapy, it is possible that maintenance therapy after BR “does more harm than good.” This high priority issue “should be evaluated in the BRIGHT data set,” Dr. Kahl recommended.
Teva Branded Pharmaceutical Products R&D sponsored the study. Dr. Flinn had no relationships to disclose; two of his fellow researchers are Teva employees. Dr. Kahl disclosed serving as an adviser or consultant to Abbvie, Acerta Pharma, Celgene, Cell Therapeutics, Genentech/Roche, Incyte, Infinity Pharmaceuticals, Juno Therapeutics, Millennium, Pharmacyclics, Sandoz, and Seattle Genetics.
[email protected]
On Twitter @maryjodales
AT ASCO 2017
Key clinical point:
Major finding: For BR and R-CHOP/R-CVP, the 5-year progression-free survival rate was 65.5% (95% CI, 58.5-71.6) and 55.8% (95% CI, 48.4-62.5), respectively.
Data source: In BRIGHT, 224 treatment-naive patients with indolent non-Hodgkin lymphoma or mantle cell lymphoma were randomized to receive BR and were compared to 223 similar patients who received either R-CHOP (104 patients) or R-CVP (119 patients).
Disclosures: Teva Branded Pharmaceutical Products R&D sponsored the study. Dr. Flinn had no relationships to disclose; two of his fellow researchers are Teva employees. Dr. Kahl disclosed serving as an adviser or consultant to Abbvie, Acerta Pharma, Celgene, Cell Therapeutics, Genentech/Roche, Incyte, Infinity Pharmaceuticals, Juno Therapeutics, Millennium, Pharmacyclics, Sandoz, and Seattle Genetics.
Lenalidomide-rituximab induces high CR rate in untreated follicular lymphoma
LUGANO, SWITZERLAND – The chemotherapy-free combination of lenalidomide (Revlimid) and rituximab was highly active as frontline therapy for patients with low- and intermediate-risk follicular lymphoma in a multicenter phase II trial.
Among 66 patients with previously untreated follicular lymphoma, the overall response rate to the combination was 95%, including complete responses in 72% of patients. The 5-year progression-free survival (PFS) rate was 70%, reported John P. Leonard, MD, of Weill Cornell Medicine, New York.
“I think this overall is a useful validation – confirmation of the single-center data that showed that this [combination] in a multicenter setting can be a highly effective and reasonably well-tolerated treatment approach for patients with untreated follicular lymphoma,” he said at the International Conference on Malignant Lymphoma, on behalf of colleagues in the National Cancer Institute Alliance for Clinical Trials in Oncology and Cancer and Leukemia Group B (CALGB) 50803 trial.
In the 50803 study, the investigators enrolled 66 treatment-naive patients. The median age was 53 years (range 32-79). Patients were eligible if they had grade 1-3a, stage 3-4 or bulky stage 2 untreated follicular lymphoma, with Follicular Lymphoma International Prognostic Index (FLIPI) scores of 0-2.
They received lenalidomide 20 mg/day on days 1 through 21 of each 28-day cycle for 12 cycles, plus rituximab administered once weekly for each week of cycle 1, and on the first day of cycles 4, 6, 8 and 10.
The investigators also evaluated polymorphisms in the Fc fragment of immunoglobulin G receptor IIa and IIIa (FcGR2A/FcGR3A).
One of the 66 patients never started treatment, leaving 65 for the response analysis.
As noted, the overall response rate was 95%, including 94% of 21 patients with FLIPI 0 or 1 disease, and 96% of 44 patients with FLIPI 2 or 3. There were no associations between FLIPI score and likelihood of achieving a complete response, and no associations between FcR polymorphism or change in angiogenic markers and either complete responses or PFS, Dr. Leonard said.
Complete responses, the primary endpoint, were seen in 15 of the 21 (71%) of patients with FLIPI 0-1, and in 32 of the 44 (73%) with FLIPI 2-3, for an overall complete response rate of 72%.
Partial responses occurred in 5 patients (23%) with FLIPI 0-1 and 10 patients (23%) with FLIPI 2-3, for an overall PR rate of 23%.
Respective rates of stable disease were 0, 2%, and 2%. One patient in each FLIPI group was not evaluated because of adverse events.
After a median follow-up of 5 years, the progression free survival rate was 70%.
The most common grade 3 or 4 adverse events were neutropenia, seen in 21% of patients, and infections, seen in 40% (including one grade 3 febrile neutropenia).
Grade 1-2 fatigue was reported by 51 patients, and grade 3 fatigue was reported by 4.
Other grade 3 or 4 events seen in more than 5% of patients included rash in 9%, and hyperglycemia, hypophosphatemia, or hypertension, each in 6% of patients.
Celgene and Genentech supported the study. Dr. Leonard has served as an adviser/consultant to Celgene and other companies.
LUGANO, SWITZERLAND – The chemotherapy-free combination of lenalidomide (Revlimid) and rituximab was highly active as frontline therapy for patients with low- and intermediate-risk follicular lymphoma in a multicenter phase II trial.
Among 66 patients with previously untreated follicular lymphoma, the overall response rate to the combination was 95%, including complete responses in 72% of patients. The 5-year progression-free survival (PFS) rate was 70%, reported John P. Leonard, MD, of Weill Cornell Medicine, New York.
“I think this overall is a useful validation – confirmation of the single-center data that showed that this [combination] in a multicenter setting can be a highly effective and reasonably well-tolerated treatment approach for patients with untreated follicular lymphoma,” he said at the International Conference on Malignant Lymphoma, on behalf of colleagues in the National Cancer Institute Alliance for Clinical Trials in Oncology and Cancer and Leukemia Group B (CALGB) 50803 trial.
In the 50803 study, the investigators enrolled 66 treatment-naive patients. The median age was 53 years (range 32-79). Patients were eligible if they had grade 1-3a, stage 3-4 or bulky stage 2 untreated follicular lymphoma, with Follicular Lymphoma International Prognostic Index (FLIPI) scores of 0-2.
They received lenalidomide 20 mg/day on days 1 through 21 of each 28-day cycle for 12 cycles, plus rituximab administered once weekly for each week of cycle 1, and on the first day of cycles 4, 6, 8 and 10.
The investigators also evaluated polymorphisms in the Fc fragment of immunoglobulin G receptor IIa and IIIa (FcGR2A/FcGR3A).
One of the 66 patients never started treatment, leaving 65 for the response analysis.
As noted, the overall response rate was 95%, including 94% of 21 patients with FLIPI 0 or 1 disease, and 96% of 44 patients with FLIPI 2 or 3. There were no associations between FLIPI score and likelihood of achieving a complete response, and no associations between FcR polymorphism or change in angiogenic markers and either complete responses or PFS, Dr. Leonard said.
Complete responses, the primary endpoint, were seen in 15 of the 21 (71%) of patients with FLIPI 0-1, and in 32 of the 44 (73%) with FLIPI 2-3, for an overall complete response rate of 72%.
Partial responses occurred in 5 patients (23%) with FLIPI 0-1 and 10 patients (23%) with FLIPI 2-3, for an overall PR rate of 23%.
Respective rates of stable disease were 0, 2%, and 2%. One patient in each FLIPI group was not evaluated because of adverse events.
After a median follow-up of 5 years, the progression free survival rate was 70%.
The most common grade 3 or 4 adverse events were neutropenia, seen in 21% of patients, and infections, seen in 40% (including one grade 3 febrile neutropenia).
Grade 1-2 fatigue was reported by 51 patients, and grade 3 fatigue was reported by 4.
Other grade 3 or 4 events seen in more than 5% of patients included rash in 9%, and hyperglycemia, hypophosphatemia, or hypertension, each in 6% of patients.
Celgene and Genentech supported the study. Dr. Leonard has served as an adviser/consultant to Celgene and other companies.
LUGANO, SWITZERLAND – The chemotherapy-free combination of lenalidomide (Revlimid) and rituximab was highly active as frontline therapy for patients with low- and intermediate-risk follicular lymphoma in a multicenter phase II trial.
Among 66 patients with previously untreated follicular lymphoma, the overall response rate to the combination was 95%, including complete responses in 72% of patients. The 5-year progression-free survival (PFS) rate was 70%, reported John P. Leonard, MD, of Weill Cornell Medicine, New York.
“I think this overall is a useful validation – confirmation of the single-center data that showed that this [combination] in a multicenter setting can be a highly effective and reasonably well-tolerated treatment approach for patients with untreated follicular lymphoma,” he said at the International Conference on Malignant Lymphoma, on behalf of colleagues in the National Cancer Institute Alliance for Clinical Trials in Oncology and Cancer and Leukemia Group B (CALGB) 50803 trial.
In the 50803 study, the investigators enrolled 66 treatment-naive patients. The median age was 53 years (range 32-79). Patients were eligible if they had grade 1-3a, stage 3-4 or bulky stage 2 untreated follicular lymphoma, with Follicular Lymphoma International Prognostic Index (FLIPI) scores of 0-2.
They received lenalidomide 20 mg/day on days 1 through 21 of each 28-day cycle for 12 cycles, plus rituximab administered once weekly for each week of cycle 1, and on the first day of cycles 4, 6, 8 and 10.
The investigators also evaluated polymorphisms in the Fc fragment of immunoglobulin G receptor IIa and IIIa (FcGR2A/FcGR3A).
One of the 66 patients never started treatment, leaving 65 for the response analysis.
As noted, the overall response rate was 95%, including 94% of 21 patients with FLIPI 0 or 1 disease, and 96% of 44 patients with FLIPI 2 or 3. There were no associations between FLIPI score and likelihood of achieving a complete response, and no associations between FcR polymorphism or change in angiogenic markers and either complete responses or PFS, Dr. Leonard said.
Complete responses, the primary endpoint, were seen in 15 of the 21 (71%) of patients with FLIPI 0-1, and in 32 of the 44 (73%) with FLIPI 2-3, for an overall complete response rate of 72%.
Partial responses occurred in 5 patients (23%) with FLIPI 0-1 and 10 patients (23%) with FLIPI 2-3, for an overall PR rate of 23%.
Respective rates of stable disease were 0, 2%, and 2%. One patient in each FLIPI group was not evaluated because of adverse events.
After a median follow-up of 5 years, the progression free survival rate was 70%.
The most common grade 3 or 4 adverse events were neutropenia, seen in 21% of patients, and infections, seen in 40% (including one grade 3 febrile neutropenia).
Grade 1-2 fatigue was reported by 51 patients, and grade 3 fatigue was reported by 4.
Other grade 3 or 4 events seen in more than 5% of patients included rash in 9%, and hyperglycemia, hypophosphatemia, or hypertension, each in 6% of patients.
Celgene and Genentech supported the study. Dr. Leonard has served as an adviser/consultant to Celgene and other companies.
AT 14-ICML
Key clinical point: The combination of lenalidomide and rituximab was highly active against previously untreated follicular lymphoma.
Major finding: The overall response rate was 95%; 5-year progression-free survival was 70%.
Data source: Open-label prospective study of lenalidomide-rituximab in 66 patients with previously untreated follicular lymphoma.
Disclosures: Celgene and Genentech supported the study. Dr. Leonard has served as an adviser/consultant to Celgene and other companies.
GALEN safe and effective in relapsed and refractory follicular lymphoma
LUGANO, SWITZERLAND – For patients with relapsed or refractory follicular lymphoma, a pairing of lenalidomide (Revlimid) and obinutuzumab (Gazyva) appeared to be especially useful among patients who had disease progression within 24 months, based on results from a Lymphoma Academic Research Organisation trial.
Among 86 patients who were enrolled in a phase II trial and were assessable for efficacy, overall response rates (ORR) with the combination therapy, nicknamed “GALEN,” were 80.2% by 1999 International Working Group criteria, and 74.4% according to the 2007 IWG criteria, reported Franck Morschhauser, MD, PhD, of the University of Lille, France.
The rationale for this combination is the known synergy between lenalidomide and rituximab in relapsed refractory non-Hodgkin lymphomas and in the frontline setting for patients with follicular lymphoma. Obinutuzumab, a follow-on to rituximab, is a unique type II glycoengineered monoclonal antibody directed against CD20, but with increased antibody-dependent cell-mediated cytotoxicity and increased direct cytotoxicity, compared with rituximab, he explained.
In the phase Ib part of the study, researchers settled on a dose of obinutuzumab 1000 mg and lenalidomide 20 mg. Obinutuzumab was administered on days 8, 15 and 22 and lenalidomide on days 1 to 21 of each 28 day cycle. Patients were evaluated for response after three cycles and at the end of induction (after completion of 4 to 6 cycles).
The maintenance phase consisted of obinutuzumab on day 1 of every other cycle beginning with cycle 1, and lenalidomide on days 1 through 22 for cycles 7 through 18. From cycles 19 through 24, obinutuzumab was given alone on the first day of every 56-day cycle.
The overall response rate (ORR) at the end of induction according to the IWG 1999 criteria, the primary endpoint, was 80.2%, including 39.5% complete or unconfirmed complete responses.
When the same patients were assessed according to 2007 IWG criteria, the ORR rate was slightly lower, at 74.4%, but the complete or unconfirmed complete response rate was slightly higher, at 44.2%.
An analysis of responses by time to relapse showed that the ORR among 24 patients with disease progression within 24 months was 70.8%, including 33.3% complete or unconfirmed complete responses by the 1999 criteria, and 66.7% with 54.2% complete or unconfirmed complete responses by the 2007 criteria.
ORR among the 64 patients with disease progression after more than 24 months was 83.9% with 41.9% complete or unconfirmed complete responses by 1999 criteria, and 77.4% with 40.3% complete or unconfirmed complete responses by 2007 criteria. The differences between the groups with disease progression within 24 months and later relapse groups were not significant.
A subanalysis by refractory status, however, showed that the 63 nonrefractory patients fared significantly better, with 87.3% ORR and 41.3% complete or unconfirmed complete responses by 1999 criteria, and 81.0% with 49.2% complete or unconfirmed complete response rate by 2007 determinations, compared with respective rates among 23 refractory patients of 60.9%/34.8% complete or unconfirmed complete response rate and 56.5% with 30.4% complete or unconfirmed complete responses (P = .0212 by 1999 criteria, and P = .022 by 2007 criteria).
After a median follow-up of 18 months, 1-year progression-free survival (PFS) among all patients was 75.5%, and 1-year overall survival (OS) was 88.8%.
There were no significant differences in either progression-free survival or overall survival by time to relapse. Although there appeared to be a nonsignificant trend toward worse outcomes among patients with refractory vs. nonrefractory disease, there was a significantly lower 1-year overall survival rate among refractory patients, at 71.5% compared with 95% for nonrefractory patients (censored logrank P = .0098).
Dr. Morschhauser said that the combination had no unexpected toxicities. Hematologic toxicities of grade 3 or greater included neutropenia in 28.4%, thrombocytopenia in 11.4%, and anemia and lymphopenia in 3.4% each.
The most common nonhematologic toxicities of all grades included infections in 62.5% of patients (grade 3 or greater in 6.8%), and asthenia in 52.3% of patients (grade 3 or greater in 2.3%). The only other grade 3 or greater toxicities were peripheral neuropathy in 1.1%, and infusion related rash in 3.4%.
Additional follow-up will be need for evaluation of the full impact of maintenance on outcomes, he added.
The study was funded by Celgene and Roche. Dr. Morschhauser disclosed receiving honoraria from and serving on advisory boards for both companies.
LUGANO, SWITZERLAND – For patients with relapsed or refractory follicular lymphoma, a pairing of lenalidomide (Revlimid) and obinutuzumab (Gazyva) appeared to be especially useful among patients who had disease progression within 24 months, based on results from a Lymphoma Academic Research Organisation trial.
Among 86 patients who were enrolled in a phase II trial and were assessable for efficacy, overall response rates (ORR) with the combination therapy, nicknamed “GALEN,” were 80.2% by 1999 International Working Group criteria, and 74.4% according to the 2007 IWG criteria, reported Franck Morschhauser, MD, PhD, of the University of Lille, France.
The rationale for this combination is the known synergy between lenalidomide and rituximab in relapsed refractory non-Hodgkin lymphomas and in the frontline setting for patients with follicular lymphoma. Obinutuzumab, a follow-on to rituximab, is a unique type II glycoengineered monoclonal antibody directed against CD20, but with increased antibody-dependent cell-mediated cytotoxicity and increased direct cytotoxicity, compared with rituximab, he explained.
In the phase Ib part of the study, researchers settled on a dose of obinutuzumab 1000 mg and lenalidomide 20 mg. Obinutuzumab was administered on days 8, 15 and 22 and lenalidomide on days 1 to 21 of each 28 day cycle. Patients were evaluated for response after three cycles and at the end of induction (after completion of 4 to 6 cycles).
The maintenance phase consisted of obinutuzumab on day 1 of every other cycle beginning with cycle 1, and lenalidomide on days 1 through 22 for cycles 7 through 18. From cycles 19 through 24, obinutuzumab was given alone on the first day of every 56-day cycle.
The overall response rate (ORR) at the end of induction according to the IWG 1999 criteria, the primary endpoint, was 80.2%, including 39.5% complete or unconfirmed complete responses.
When the same patients were assessed according to 2007 IWG criteria, the ORR rate was slightly lower, at 74.4%, but the complete or unconfirmed complete response rate was slightly higher, at 44.2%.
An analysis of responses by time to relapse showed that the ORR among 24 patients with disease progression within 24 months was 70.8%, including 33.3% complete or unconfirmed complete responses by the 1999 criteria, and 66.7% with 54.2% complete or unconfirmed complete responses by the 2007 criteria.
ORR among the 64 patients with disease progression after more than 24 months was 83.9% with 41.9% complete or unconfirmed complete responses by 1999 criteria, and 77.4% with 40.3% complete or unconfirmed complete responses by 2007 criteria. The differences between the groups with disease progression within 24 months and later relapse groups were not significant.
A subanalysis by refractory status, however, showed that the 63 nonrefractory patients fared significantly better, with 87.3% ORR and 41.3% complete or unconfirmed complete responses by 1999 criteria, and 81.0% with 49.2% complete or unconfirmed complete response rate by 2007 determinations, compared with respective rates among 23 refractory patients of 60.9%/34.8% complete or unconfirmed complete response rate and 56.5% with 30.4% complete or unconfirmed complete responses (P = .0212 by 1999 criteria, and P = .022 by 2007 criteria).
After a median follow-up of 18 months, 1-year progression-free survival (PFS) among all patients was 75.5%, and 1-year overall survival (OS) was 88.8%.
There were no significant differences in either progression-free survival or overall survival by time to relapse. Although there appeared to be a nonsignificant trend toward worse outcomes among patients with refractory vs. nonrefractory disease, there was a significantly lower 1-year overall survival rate among refractory patients, at 71.5% compared with 95% for nonrefractory patients (censored logrank P = .0098).
Dr. Morschhauser said that the combination had no unexpected toxicities. Hematologic toxicities of grade 3 or greater included neutropenia in 28.4%, thrombocytopenia in 11.4%, and anemia and lymphopenia in 3.4% each.
The most common nonhematologic toxicities of all grades included infections in 62.5% of patients (grade 3 or greater in 6.8%), and asthenia in 52.3% of patients (grade 3 or greater in 2.3%). The only other grade 3 or greater toxicities were peripheral neuropathy in 1.1%, and infusion related rash in 3.4%.
Additional follow-up will be need for evaluation of the full impact of maintenance on outcomes, he added.
The study was funded by Celgene and Roche. Dr. Morschhauser disclosed receiving honoraria from and serving on advisory boards for both companies.
LUGANO, SWITZERLAND – For patients with relapsed or refractory follicular lymphoma, a pairing of lenalidomide (Revlimid) and obinutuzumab (Gazyva) appeared to be especially useful among patients who had disease progression within 24 months, based on results from a Lymphoma Academic Research Organisation trial.
Among 86 patients who were enrolled in a phase II trial and were assessable for efficacy, overall response rates (ORR) with the combination therapy, nicknamed “GALEN,” were 80.2% by 1999 International Working Group criteria, and 74.4% according to the 2007 IWG criteria, reported Franck Morschhauser, MD, PhD, of the University of Lille, France.
The rationale for this combination is the known synergy between lenalidomide and rituximab in relapsed refractory non-Hodgkin lymphomas and in the frontline setting for patients with follicular lymphoma. Obinutuzumab, a follow-on to rituximab, is a unique type II glycoengineered monoclonal antibody directed against CD20, but with increased antibody-dependent cell-mediated cytotoxicity and increased direct cytotoxicity, compared with rituximab, he explained.
In the phase Ib part of the study, researchers settled on a dose of obinutuzumab 1000 mg and lenalidomide 20 mg. Obinutuzumab was administered on days 8, 15 and 22 and lenalidomide on days 1 to 21 of each 28 day cycle. Patients were evaluated for response after three cycles and at the end of induction (after completion of 4 to 6 cycles).
The maintenance phase consisted of obinutuzumab on day 1 of every other cycle beginning with cycle 1, and lenalidomide on days 1 through 22 for cycles 7 through 18. From cycles 19 through 24, obinutuzumab was given alone on the first day of every 56-day cycle.
The overall response rate (ORR) at the end of induction according to the IWG 1999 criteria, the primary endpoint, was 80.2%, including 39.5% complete or unconfirmed complete responses.
When the same patients were assessed according to 2007 IWG criteria, the ORR rate was slightly lower, at 74.4%, but the complete or unconfirmed complete response rate was slightly higher, at 44.2%.
An analysis of responses by time to relapse showed that the ORR among 24 patients with disease progression within 24 months was 70.8%, including 33.3% complete or unconfirmed complete responses by the 1999 criteria, and 66.7% with 54.2% complete or unconfirmed complete responses by the 2007 criteria.
ORR among the 64 patients with disease progression after more than 24 months was 83.9% with 41.9% complete or unconfirmed complete responses by 1999 criteria, and 77.4% with 40.3% complete or unconfirmed complete responses by 2007 criteria. The differences between the groups with disease progression within 24 months and later relapse groups were not significant.
A subanalysis by refractory status, however, showed that the 63 nonrefractory patients fared significantly better, with 87.3% ORR and 41.3% complete or unconfirmed complete responses by 1999 criteria, and 81.0% with 49.2% complete or unconfirmed complete response rate by 2007 determinations, compared with respective rates among 23 refractory patients of 60.9%/34.8% complete or unconfirmed complete response rate and 56.5% with 30.4% complete or unconfirmed complete responses (P = .0212 by 1999 criteria, and P = .022 by 2007 criteria).
After a median follow-up of 18 months, 1-year progression-free survival (PFS) among all patients was 75.5%, and 1-year overall survival (OS) was 88.8%.
There were no significant differences in either progression-free survival or overall survival by time to relapse. Although there appeared to be a nonsignificant trend toward worse outcomes among patients with refractory vs. nonrefractory disease, there was a significantly lower 1-year overall survival rate among refractory patients, at 71.5% compared with 95% for nonrefractory patients (censored logrank P = .0098).
Dr. Morschhauser said that the combination had no unexpected toxicities. Hematologic toxicities of grade 3 or greater included neutropenia in 28.4%, thrombocytopenia in 11.4%, and anemia and lymphopenia in 3.4% each.
The most common nonhematologic toxicities of all grades included infections in 62.5% of patients (grade 3 or greater in 6.8%), and asthenia in 52.3% of patients (grade 3 or greater in 2.3%). The only other grade 3 or greater toxicities were peripheral neuropathy in 1.1%, and infusion related rash in 3.4%.
Additional follow-up will be need for evaluation of the full impact of maintenance on outcomes, he added.
The study was funded by Celgene and Roche. Dr. Morschhauser disclosed receiving honoraria from and serving on advisory boards for both companies.
AT 14-ICML
Key clinical point: A combination of lenalidomide and obinutuzumab was safe and effective in patients with relapsed/refractory follicular lymphoma.
Major finding: The overall response rate according to 1999 International Working Group criteria was 80.2%, including 39.5% CR/CRu.
Data source: Single-arm phase II study with 86 patients evaluable for efficacy and 88 evaluable for safety.
Disclosures: The study was funded by Celgene and Roche. Dr. Morschhauser disclosed receiving honoraria from and serving on advisory boards for both companies.
