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FDA grants regular approval to venetoclax for CLL/SLL
Venetoclax (Venclexta) has received regular approval from the Food and Drug Administration for the treatment of patients with chronic lymphocytic leukemia (CLL) or small lymphocytic lymphoma (SLL), with or without 17p deletion, who have received at least one prior therapy.
The approval was based results from the MURANO trial of 389 patients, which was a randomized, multicenter, open-label trial of venetoclax plus rituximab versus bendamustine plus rituximab.
Neutropenia, diarrhea, upper respiratory tract infection, fatigue, cough, and nausea were the most common adverse events seen in the venetoclax arm. Grade 3 or 4 neutropenia developed in 64% of those patients, and grade 4 in 31%. The most common infection in venetoclax patients was pneumonia, but overall, 21% of patients in that arm experienced some kind of infection.
Because of the rapid reduction in tumor size, tumor lysis syndrome is possible with venetoclax treatment, the FDA noted.
In 2016, the FDA granted accelerated approval to venetoclax for treatment of patients with CLL with 17d deletion who had received at least one prior line of therapy.
Venetoclax (Venclexta) has received regular approval from the Food and Drug Administration for the treatment of patients with chronic lymphocytic leukemia (CLL) or small lymphocytic lymphoma (SLL), with or without 17p deletion, who have received at least one prior therapy.
The approval was based results from the MURANO trial of 389 patients, which was a randomized, multicenter, open-label trial of venetoclax plus rituximab versus bendamustine plus rituximab.
Neutropenia, diarrhea, upper respiratory tract infection, fatigue, cough, and nausea were the most common adverse events seen in the venetoclax arm. Grade 3 or 4 neutropenia developed in 64% of those patients, and grade 4 in 31%. The most common infection in venetoclax patients was pneumonia, but overall, 21% of patients in that arm experienced some kind of infection.
Because of the rapid reduction in tumor size, tumor lysis syndrome is possible with venetoclax treatment, the FDA noted.
In 2016, the FDA granted accelerated approval to venetoclax for treatment of patients with CLL with 17d deletion who had received at least one prior line of therapy.
Venetoclax (Venclexta) has received regular approval from the Food and Drug Administration for the treatment of patients with chronic lymphocytic leukemia (CLL) or small lymphocytic lymphoma (SLL), with or without 17p deletion, who have received at least one prior therapy.
The approval was based results from the MURANO trial of 389 patients, which was a randomized, multicenter, open-label trial of venetoclax plus rituximab versus bendamustine plus rituximab.
Neutropenia, diarrhea, upper respiratory tract infection, fatigue, cough, and nausea were the most common adverse events seen in the venetoclax arm. Grade 3 or 4 neutropenia developed in 64% of those patients, and grade 4 in 31%. The most common infection in venetoclax patients was pneumonia, but overall, 21% of patients in that arm experienced some kind of infection.
Because of the rapid reduction in tumor size, tumor lysis syndrome is possible with venetoclax treatment, the FDA noted.
In 2016, the FDA granted accelerated approval to venetoclax for treatment of patients with CLL with 17d deletion who had received at least one prior line of therapy.
Venetoclax plus ibrutinib yields encouraging MRD results in first-line CLL
CHICAGO – The combination of ibrutinib plus venetoclax yielded a high rate of undetectable minimal residual disease (MRD) when used as first-line treatment for chronic lymphocytic leukemia (CLL), according to preliminary results of the CAPTIVATE trial.
Of the first 30 patients in the trial, 23 (77%) had undetectable blood MRD after just six cycles of combined treatment, said investigator William G. Wierda, MD, PhD, of the University of Texas MD Anderson Cancer Center, Houston.
“These early results show a highly active and safe treatment with 12 cycles of combined treatment with ibrutinib and venetoclax,” Dr. Wierda said in a presentation of the CAPTIVATE results at the annual meeting of the American Society of Clinical Oncology.
Those MRD results are “at least as good as we can achieve with chemoimmunotherapy,” Bruce D. Cheson, MD, head of hematology at Georgetown University, Washington, said during a discussion of the CAPTIVATE study results.
Dr. Cheson referenced MRD results from a 2016 analysis of the CLL8 and CLL10 trials, which included patients treated with fludarabine, cyclophosphamide, and rituximab (FCR) and bendamustine plus rituximab (BR). In that analysis, 33.6% of patients achieved MRD-negative complete response and 29.1% achieved MRD-negative partial response.
In CAPTIVATE, by contrast, all of the complete remissions were MRD negative, as were a majority of the partial responders, Dr. Cheson noted.
Venetoclax and ibrutinib have “clinically complimentary activity” that provided a rationale for combining the two, Dr. Wierda said at ASCO. Ibrutinib is a BTK inhibitor that has a high rate of response and durable disease control, though continuous treatment is indicated, he said, because most patients achieve partial remissions as best response and continue to have residual disease in blood or bone marrow. Venetoclax, he added, is a BCL-2 inhibitor that produces durable partial remissions, though “residual disease is typically present in the form of persistently enlarged lymph nodes,” he said. “Venetoclax is highly effective at clearing disease from blood and bone marrow.”
The phase 2 CAPTIVATE trial includes a total of 164 patients younger than 70 years of age who receive a 3-cycle ibrutinib lead-in, followed by ibrutinib plus venetoclax for 12 cycles. At that point, patients are randomized according to MRD status. Patients with confirmed undetectable MRD are randomized to further treatment with ibrutinib or placebo, and those with undetectable MRD not confirmed are randomized to ibrutinib versus ibrutinib plus venetoclax.
In addition to early efficacy data, Dr. Wierda also reported some safety data. Compared with the single-agent ibrutinib lead-in period, combined ibrutinib plus venetoclax treatment had more gastrointestinal-associated events and neutropenia. Almost half of patients (45%) have had a treatment-related grade 3-4 adverse event, though just 18 (11%) have had treatment-related adverse events classified as serious, and there have been no adverse event-related deaths on study.
The high activity of ibrutinib plus venetoclax in CAPTIVATE supports further study of the combination, Dr. Wierda said. A randomized, open-label phase 3 trial of ibrutinib plus venetoclax versus chlorambucil plus obinutuzumab as first-line treatment for CLL is currently recruiting.
The study was sponsored by Pharmacyclics, an AbbVie company. Dr. Wierda reported consulting and research funding from Pharmacyclics, AbbVie, and several other companies.
SOURCE: Wierda WG et al. ASCO 2018, Abstract 7502.
CHICAGO – The combination of ibrutinib plus venetoclax yielded a high rate of undetectable minimal residual disease (MRD) when used as first-line treatment for chronic lymphocytic leukemia (CLL), according to preliminary results of the CAPTIVATE trial.
Of the first 30 patients in the trial, 23 (77%) had undetectable blood MRD after just six cycles of combined treatment, said investigator William G. Wierda, MD, PhD, of the University of Texas MD Anderson Cancer Center, Houston.
“These early results show a highly active and safe treatment with 12 cycles of combined treatment with ibrutinib and venetoclax,” Dr. Wierda said in a presentation of the CAPTIVATE results at the annual meeting of the American Society of Clinical Oncology.
Those MRD results are “at least as good as we can achieve with chemoimmunotherapy,” Bruce D. Cheson, MD, head of hematology at Georgetown University, Washington, said during a discussion of the CAPTIVATE study results.
Dr. Cheson referenced MRD results from a 2016 analysis of the CLL8 and CLL10 trials, which included patients treated with fludarabine, cyclophosphamide, and rituximab (FCR) and bendamustine plus rituximab (BR). In that analysis, 33.6% of patients achieved MRD-negative complete response and 29.1% achieved MRD-negative partial response.
In CAPTIVATE, by contrast, all of the complete remissions were MRD negative, as were a majority of the partial responders, Dr. Cheson noted.
Venetoclax and ibrutinib have “clinically complimentary activity” that provided a rationale for combining the two, Dr. Wierda said at ASCO. Ibrutinib is a BTK inhibitor that has a high rate of response and durable disease control, though continuous treatment is indicated, he said, because most patients achieve partial remissions as best response and continue to have residual disease in blood or bone marrow. Venetoclax, he added, is a BCL-2 inhibitor that produces durable partial remissions, though “residual disease is typically present in the form of persistently enlarged lymph nodes,” he said. “Venetoclax is highly effective at clearing disease from blood and bone marrow.”
The phase 2 CAPTIVATE trial includes a total of 164 patients younger than 70 years of age who receive a 3-cycle ibrutinib lead-in, followed by ibrutinib plus venetoclax for 12 cycles. At that point, patients are randomized according to MRD status. Patients with confirmed undetectable MRD are randomized to further treatment with ibrutinib or placebo, and those with undetectable MRD not confirmed are randomized to ibrutinib versus ibrutinib plus venetoclax.
In addition to early efficacy data, Dr. Wierda also reported some safety data. Compared with the single-agent ibrutinib lead-in period, combined ibrutinib plus venetoclax treatment had more gastrointestinal-associated events and neutropenia. Almost half of patients (45%) have had a treatment-related grade 3-4 adverse event, though just 18 (11%) have had treatment-related adverse events classified as serious, and there have been no adverse event-related deaths on study.
The high activity of ibrutinib plus venetoclax in CAPTIVATE supports further study of the combination, Dr. Wierda said. A randomized, open-label phase 3 trial of ibrutinib plus venetoclax versus chlorambucil plus obinutuzumab as first-line treatment for CLL is currently recruiting.
The study was sponsored by Pharmacyclics, an AbbVie company. Dr. Wierda reported consulting and research funding from Pharmacyclics, AbbVie, and several other companies.
SOURCE: Wierda WG et al. ASCO 2018, Abstract 7502.
CHICAGO – The combination of ibrutinib plus venetoclax yielded a high rate of undetectable minimal residual disease (MRD) when used as first-line treatment for chronic lymphocytic leukemia (CLL), according to preliminary results of the CAPTIVATE trial.
Of the first 30 patients in the trial, 23 (77%) had undetectable blood MRD after just six cycles of combined treatment, said investigator William G. Wierda, MD, PhD, of the University of Texas MD Anderson Cancer Center, Houston.
“These early results show a highly active and safe treatment with 12 cycles of combined treatment with ibrutinib and venetoclax,” Dr. Wierda said in a presentation of the CAPTIVATE results at the annual meeting of the American Society of Clinical Oncology.
Those MRD results are “at least as good as we can achieve with chemoimmunotherapy,” Bruce D. Cheson, MD, head of hematology at Georgetown University, Washington, said during a discussion of the CAPTIVATE study results.
Dr. Cheson referenced MRD results from a 2016 analysis of the CLL8 and CLL10 trials, which included patients treated with fludarabine, cyclophosphamide, and rituximab (FCR) and bendamustine plus rituximab (BR). In that analysis, 33.6% of patients achieved MRD-negative complete response and 29.1% achieved MRD-negative partial response.
In CAPTIVATE, by contrast, all of the complete remissions were MRD negative, as were a majority of the partial responders, Dr. Cheson noted.
Venetoclax and ibrutinib have “clinically complimentary activity” that provided a rationale for combining the two, Dr. Wierda said at ASCO. Ibrutinib is a BTK inhibitor that has a high rate of response and durable disease control, though continuous treatment is indicated, he said, because most patients achieve partial remissions as best response and continue to have residual disease in blood or bone marrow. Venetoclax, he added, is a BCL-2 inhibitor that produces durable partial remissions, though “residual disease is typically present in the form of persistently enlarged lymph nodes,” he said. “Venetoclax is highly effective at clearing disease from blood and bone marrow.”
The phase 2 CAPTIVATE trial includes a total of 164 patients younger than 70 years of age who receive a 3-cycle ibrutinib lead-in, followed by ibrutinib plus venetoclax for 12 cycles. At that point, patients are randomized according to MRD status. Patients with confirmed undetectable MRD are randomized to further treatment with ibrutinib or placebo, and those with undetectable MRD not confirmed are randomized to ibrutinib versus ibrutinib plus venetoclax.
In addition to early efficacy data, Dr. Wierda also reported some safety data. Compared with the single-agent ibrutinib lead-in period, combined ibrutinib plus venetoclax treatment had more gastrointestinal-associated events and neutropenia. Almost half of patients (45%) have had a treatment-related grade 3-4 adverse event, though just 18 (11%) have had treatment-related adverse events classified as serious, and there have been no adverse event-related deaths on study.
The high activity of ibrutinib plus venetoclax in CAPTIVATE supports further study of the combination, Dr. Wierda said. A randomized, open-label phase 3 trial of ibrutinib plus venetoclax versus chlorambucil plus obinutuzumab as first-line treatment for CLL is currently recruiting.
The study was sponsored by Pharmacyclics, an AbbVie company. Dr. Wierda reported consulting and research funding from Pharmacyclics, AbbVie, and several other companies.
SOURCE: Wierda WG et al. ASCO 2018, Abstract 7502.
REPORTING FROM ASCO 2018
Key clinical point:
Major finding: Of 14 patients, 12 (86%) who completed 12 cycles of treatment had undetectable bone marrow MRD.
Study details: Early results of the phase 2 CAPTIVATE trial including 164 patients younger than 70 years of age with previously untreated CLL.
Disclosures: The study was sponsored by Pharmacyclics, an Abbvie company. Dr. Wierda reported consulting and research funding from Pharmacyclics, AbbVie, and several other companies.
Source: Wierda WG et al. ASCO 2018, Abstract 7502.
Ibrutinib plus rituximab amped PFS in Waldenström’s
, results of a randomized phase 3 trial show.
The results make ibrutinib plus rituximab “a new standard of care” for the disease, said investigator Meletios A. Dimopoulos, MD, with the Department of Clinical Therapeutics, National and Kapodistrian University of Athens, Greece.
“This is a combination with remarkable activity as far as progression-free survival is concerned, and well tolerated,” Dr. Dimopoulos said in a presentation of the data here at the 2018 annual meeting of the American Society of Clinical Oncology (ASCO).
Ibrutinib, a BTK inhibitor, was approved as a single agent in 2015 for the treatment of Waldenström’s macroglobulinemia.* Clinical practice guidelines from the National Comprehensive Cancer Network (NCCN) list ibrutinib as an “other” recommended regimen, noting that study data show a “lower overall and absence of major responses” reported for MYD88 wild-type patients.Rituximab alone and in combination with other agents has clinical activity in Waldenström’s. Moreover, preclinical studies have shown that rituximab and ibrutinib have synergistic activity, Dr. Dimopoulos said, presenting data from the iNNOVATE Study Group and the European Consortium for Waldenström’s Macroglobulinemia that was published concurrently in the New England Journal of Medicine.
They initiated a study of 150 symptomatic patients randomized to either ibrutinib plus rituximab or placebo plus rituximab, with a primary end point of progression-free survival.
They also assessed mutational status of MYD88 and CXCR4 in bone marrow samples, given that previous data suggest outcomes of ibrutinib treatment for this disease depend on MYD88 and CXCR4 mutational status, they said in the report.
Progression-free survival at 30 months was 82% for ibrutinib plus rituximab, compared to 28% for placebo plus rituximab (hazard ratio for progression or death, 0.20; P less than 0.001). Further, ibrutinib and rituximab had a benefit that was independent of the MYD88 or CXCR4 genotype, the investigators reported.
“Response rates with ibrutinib–rituximab were similar across different CXCR4 genotypes, but were slightly lower among patients who did not have the activating MYD88 L265P mutation, which triggers the growth of malignant cells through BTK and hematopoietic-cell kinase, both of which are targeted by ibrutinib,” they wrote.
Atrial fibrillation of grade 3 or higher occurred in 12% of the ibrutinib-rituximab and in 1% of placebo-rituximab groups. In the ibrutinib-rituximab group, the majority of these cases occurred in patients older than 75 years of age, Dr. Dimopoulos reported at ASCO.
Grade 3 or greater hypertension occurred in 13% and 4% of the ibrutinib-rituximab and placebo-rituximab groups respectively, while respiratory tract infections occurred in 4% and 0%. Conversely, the ibrutinib-rituximab arm had a lower rate of grade 3 or greater infusion reactions (1% vs. 16%), he said.
Based on this report, ibrutinib plus rituximab is “appealing, primarily in MYD88-mutated patients, which is the vast majority of Waldenström’s patients,” said Craig Hofmeister, MD, MPH, who commented on the study in a ASCO presentation discussing the results of this trial.
Dr. Hofmeister, of Winship Cancer Institute, Emory University, Atlanta, noted the numerically lower response rate in patients without the MYD88 mutation “makes me wonder whether I would want to have ibrutinib if I was MYD88 wild type.”
Atrial fibrillation and infections on the ibrutinib-rituximab regimen may require close monitoring and should be managed appropriately, he added. “Atrial fibrillation seems to be a consistent theme with ibrutinib, certainly in patients who are older and have probably more heart disease.”
The study (NCT02165397) was funded by Pharmacyclics and Janssen Research and Development. Dr. Dimopoulos reported personal fees from Amgen, Celgene, Janssen, and Takeda, outside of the submitted work. Co-authors reported disclosures related to Pharmacyclics, Bristol-Myers Squibb, Gilead, Roche, and AbbVie, among others. Dr. Hofmeister had no relevant financial disclosures.
SOURCE: Dimopoulos MA, et al. N Engl J Med. 2018 Jun 1. ASCO Abstract 8003.
*Correction, 8/27/2018: An earlier version of this story misstated the date of ibrutinib's approval as a single agent in the treatment of Waldenström’s .
, results of a randomized phase 3 trial show.
The results make ibrutinib plus rituximab “a new standard of care” for the disease, said investigator Meletios A. Dimopoulos, MD, with the Department of Clinical Therapeutics, National and Kapodistrian University of Athens, Greece.
“This is a combination with remarkable activity as far as progression-free survival is concerned, and well tolerated,” Dr. Dimopoulos said in a presentation of the data here at the 2018 annual meeting of the American Society of Clinical Oncology (ASCO).
Ibrutinib, a BTK inhibitor, was approved as a single agent in 2015 for the treatment of Waldenström’s macroglobulinemia.* Clinical practice guidelines from the National Comprehensive Cancer Network (NCCN) list ibrutinib as an “other” recommended regimen, noting that study data show a “lower overall and absence of major responses” reported for MYD88 wild-type patients.Rituximab alone and in combination with other agents has clinical activity in Waldenström’s. Moreover, preclinical studies have shown that rituximab and ibrutinib have synergistic activity, Dr. Dimopoulos said, presenting data from the iNNOVATE Study Group and the European Consortium for Waldenström’s Macroglobulinemia that was published concurrently in the New England Journal of Medicine.
They initiated a study of 150 symptomatic patients randomized to either ibrutinib plus rituximab or placebo plus rituximab, with a primary end point of progression-free survival.
They also assessed mutational status of MYD88 and CXCR4 in bone marrow samples, given that previous data suggest outcomes of ibrutinib treatment for this disease depend on MYD88 and CXCR4 mutational status, they said in the report.
Progression-free survival at 30 months was 82% for ibrutinib plus rituximab, compared to 28% for placebo plus rituximab (hazard ratio for progression or death, 0.20; P less than 0.001). Further, ibrutinib and rituximab had a benefit that was independent of the MYD88 or CXCR4 genotype, the investigators reported.
“Response rates with ibrutinib–rituximab were similar across different CXCR4 genotypes, but were slightly lower among patients who did not have the activating MYD88 L265P mutation, which triggers the growth of malignant cells through BTK and hematopoietic-cell kinase, both of which are targeted by ibrutinib,” they wrote.
Atrial fibrillation of grade 3 or higher occurred in 12% of the ibrutinib-rituximab and in 1% of placebo-rituximab groups. In the ibrutinib-rituximab group, the majority of these cases occurred in patients older than 75 years of age, Dr. Dimopoulos reported at ASCO.
Grade 3 or greater hypertension occurred in 13% and 4% of the ibrutinib-rituximab and placebo-rituximab groups respectively, while respiratory tract infections occurred in 4% and 0%. Conversely, the ibrutinib-rituximab arm had a lower rate of grade 3 or greater infusion reactions (1% vs. 16%), he said.
Based on this report, ibrutinib plus rituximab is “appealing, primarily in MYD88-mutated patients, which is the vast majority of Waldenström’s patients,” said Craig Hofmeister, MD, MPH, who commented on the study in a ASCO presentation discussing the results of this trial.
Dr. Hofmeister, of Winship Cancer Institute, Emory University, Atlanta, noted the numerically lower response rate in patients without the MYD88 mutation “makes me wonder whether I would want to have ibrutinib if I was MYD88 wild type.”
Atrial fibrillation and infections on the ibrutinib-rituximab regimen may require close monitoring and should be managed appropriately, he added. “Atrial fibrillation seems to be a consistent theme with ibrutinib, certainly in patients who are older and have probably more heart disease.”
The study (NCT02165397) was funded by Pharmacyclics and Janssen Research and Development. Dr. Dimopoulos reported personal fees from Amgen, Celgene, Janssen, and Takeda, outside of the submitted work. Co-authors reported disclosures related to Pharmacyclics, Bristol-Myers Squibb, Gilead, Roche, and AbbVie, among others. Dr. Hofmeister had no relevant financial disclosures.
SOURCE: Dimopoulos MA, et al. N Engl J Med. 2018 Jun 1. ASCO Abstract 8003.
*Correction, 8/27/2018: An earlier version of this story misstated the date of ibrutinib's approval as a single agent in the treatment of Waldenström’s .
, results of a randomized phase 3 trial show.
The results make ibrutinib plus rituximab “a new standard of care” for the disease, said investigator Meletios A. Dimopoulos, MD, with the Department of Clinical Therapeutics, National and Kapodistrian University of Athens, Greece.
“This is a combination with remarkable activity as far as progression-free survival is concerned, and well tolerated,” Dr. Dimopoulos said in a presentation of the data here at the 2018 annual meeting of the American Society of Clinical Oncology (ASCO).
Ibrutinib, a BTK inhibitor, was approved as a single agent in 2015 for the treatment of Waldenström’s macroglobulinemia.* Clinical practice guidelines from the National Comprehensive Cancer Network (NCCN) list ibrutinib as an “other” recommended regimen, noting that study data show a “lower overall and absence of major responses” reported for MYD88 wild-type patients.Rituximab alone and in combination with other agents has clinical activity in Waldenström’s. Moreover, preclinical studies have shown that rituximab and ibrutinib have synergistic activity, Dr. Dimopoulos said, presenting data from the iNNOVATE Study Group and the European Consortium for Waldenström’s Macroglobulinemia that was published concurrently in the New England Journal of Medicine.
They initiated a study of 150 symptomatic patients randomized to either ibrutinib plus rituximab or placebo plus rituximab, with a primary end point of progression-free survival.
They also assessed mutational status of MYD88 and CXCR4 in bone marrow samples, given that previous data suggest outcomes of ibrutinib treatment for this disease depend on MYD88 and CXCR4 mutational status, they said in the report.
Progression-free survival at 30 months was 82% for ibrutinib plus rituximab, compared to 28% for placebo plus rituximab (hazard ratio for progression or death, 0.20; P less than 0.001). Further, ibrutinib and rituximab had a benefit that was independent of the MYD88 or CXCR4 genotype, the investigators reported.
“Response rates with ibrutinib–rituximab were similar across different CXCR4 genotypes, but were slightly lower among patients who did not have the activating MYD88 L265P mutation, which triggers the growth of malignant cells through BTK and hematopoietic-cell kinase, both of which are targeted by ibrutinib,” they wrote.
Atrial fibrillation of grade 3 or higher occurred in 12% of the ibrutinib-rituximab and in 1% of placebo-rituximab groups. In the ibrutinib-rituximab group, the majority of these cases occurred in patients older than 75 years of age, Dr. Dimopoulos reported at ASCO.
Grade 3 or greater hypertension occurred in 13% and 4% of the ibrutinib-rituximab and placebo-rituximab groups respectively, while respiratory tract infections occurred in 4% and 0%. Conversely, the ibrutinib-rituximab arm had a lower rate of grade 3 or greater infusion reactions (1% vs. 16%), he said.
Based on this report, ibrutinib plus rituximab is “appealing, primarily in MYD88-mutated patients, which is the vast majority of Waldenström’s patients,” said Craig Hofmeister, MD, MPH, who commented on the study in a ASCO presentation discussing the results of this trial.
Dr. Hofmeister, of Winship Cancer Institute, Emory University, Atlanta, noted the numerically lower response rate in patients without the MYD88 mutation “makes me wonder whether I would want to have ibrutinib if I was MYD88 wild type.”
Atrial fibrillation and infections on the ibrutinib-rituximab regimen may require close monitoring and should be managed appropriately, he added. “Atrial fibrillation seems to be a consistent theme with ibrutinib, certainly in patients who are older and have probably more heart disease.”
The study (NCT02165397) was funded by Pharmacyclics and Janssen Research and Development. Dr. Dimopoulos reported personal fees from Amgen, Celgene, Janssen, and Takeda, outside of the submitted work. Co-authors reported disclosures related to Pharmacyclics, Bristol-Myers Squibb, Gilead, Roche, and AbbVie, among others. Dr. Hofmeister had no relevant financial disclosures.
SOURCE: Dimopoulos MA, et al. N Engl J Med. 2018 Jun 1. ASCO Abstract 8003.
*Correction, 8/27/2018: An earlier version of this story misstated the date of ibrutinib's approval as a single agent in the treatment of Waldenström’s .
REPORTING FROM ASCO 2018
Key clinical point: Adding ibrutinib to rituximab treatment improved progression-free survival in patients with Waldenström’s macroglobulinemia.
Major finding: The rate of 30-month progression-free survival was 82% for the combination of ibrutinib plus rituximab, as compared with 28% for placebo plus rituximab (hazard ratio, 0.20; P less than 0.001).
Study details: A phase 3 trial including 150 symptomatic patients with Waldenström’s macroglobulinemia who had received no previous treatment or had disease recurrence.
Disclosures: The study (NCT02165397) was funded by Pharmacyclics and Janssen Research and Development. Dr. Dimopoulos reported personal fees from Amgen, Celgene, Janssen, and Takeda, outside of the submitted work. Co-authors reported disclosures related to Pharmacyclics, Bristol-Myers Squibb, Gilead, Roche, and AbbVie, among others. Dr. Hofmeister had no relevant financial disclosures.
Source: Dimopoulos MA, et al. N Engl J Med. 2018 Jun 1. ASCO Abstract 8003.
Older CLL and NHL patients are more vulnerable to toxicities
Older patients with chronic lymphocytic leukemia (CLL) and non-Hodgkin lymphoma (NHL) have an increased odds of experiencing treatment-related toxicities, even when treated with novel agents, according to findings reported in the Journal of Geriatric Oncology.
An analysis of 1,199 patients showed that CLL patients aged 65 years and older had significantly higher odds than younger patients of developing a grade three or four hematologic toxicity (adjusted odds ratio, 1.70; P = .009; 95% confidence interval, 1.57-1.84) or nonhematologic toxicity (OR, 1.47; P = .022; 95% CI, 1.39-1.55).
Investigators analyzed data obtained from the Alliance for Clinical Trials in Oncology to compare the incidence of toxicities between age groups. Of the 1,199 patients included in the analysis, 409 were 65 years of age or older, and 790 were younger than 65 years. Among these patients, 438 received only therapy with novel agents including biologic combinations, monoclonal antibodies, cell cycle inhibitors, chemoimmunotherapy, and immunomodulators, and 761 received novel agents in addition to chemotherapy.
Overall, 68% of CLL patients and 35% of NHL patients had at least one grade three or four hematologic toxicity, compared with 48% and 54% for nonhematologic toxicities, respectively.
Older CLL patients with at least one grade three or four toxicity in the first 3 months had similar overall survival (OS) and progression-free survival (PFS) as those without a toxicity. In contrast, older NHL patients with at least one grade three or four hematologic toxicity in the first 3 months had worse OS (HR, 3.14; P = .006; 95% CI, 2.25-4.39) and PFS (HR, 3.06; P = .011; 95% CI, 2.10-4.45) than patients without these toxicities. Nonhematologic toxicities were not significantly associated with survival outcomes for patients with NHL.
“The observed associations between hematologic toxicity and OS/PFS among older patients with NHL require further investigation,” the researchers wrote. “These findings could represent a direct effect of toxicity due to decreased physiologic reserve, decreased drug clearance, or an increased sensitivity of tissue to novel agents.”
The study was supported by a National Institutes of Health grant. Researchers reported relationships with Bartlett, KITE, Pfizer, Seattle Genetics, Roche-Genentech, Celgene, Pharmacyclics, and Gilead.
SOURCE: Tallarico M et al. J Geriatr Oncol. 2018 Apr 16. pii: S1879-4068(18)30131-0.
Older patients with chronic lymphocytic leukemia (CLL) and non-Hodgkin lymphoma (NHL) have an increased odds of experiencing treatment-related toxicities, even when treated with novel agents, according to findings reported in the Journal of Geriatric Oncology.
An analysis of 1,199 patients showed that CLL patients aged 65 years and older had significantly higher odds than younger patients of developing a grade three or four hematologic toxicity (adjusted odds ratio, 1.70; P = .009; 95% confidence interval, 1.57-1.84) or nonhematologic toxicity (OR, 1.47; P = .022; 95% CI, 1.39-1.55).
Investigators analyzed data obtained from the Alliance for Clinical Trials in Oncology to compare the incidence of toxicities between age groups. Of the 1,199 patients included in the analysis, 409 were 65 years of age or older, and 790 were younger than 65 years. Among these patients, 438 received only therapy with novel agents including biologic combinations, monoclonal antibodies, cell cycle inhibitors, chemoimmunotherapy, and immunomodulators, and 761 received novel agents in addition to chemotherapy.
Overall, 68% of CLL patients and 35% of NHL patients had at least one grade three or four hematologic toxicity, compared with 48% and 54% for nonhematologic toxicities, respectively.
Older CLL patients with at least one grade three or four toxicity in the first 3 months had similar overall survival (OS) and progression-free survival (PFS) as those without a toxicity. In contrast, older NHL patients with at least one grade three or four hematologic toxicity in the first 3 months had worse OS (HR, 3.14; P = .006; 95% CI, 2.25-4.39) and PFS (HR, 3.06; P = .011; 95% CI, 2.10-4.45) than patients without these toxicities. Nonhematologic toxicities were not significantly associated with survival outcomes for patients with NHL.
“The observed associations between hematologic toxicity and OS/PFS among older patients with NHL require further investigation,” the researchers wrote. “These findings could represent a direct effect of toxicity due to decreased physiologic reserve, decreased drug clearance, or an increased sensitivity of tissue to novel agents.”
The study was supported by a National Institutes of Health grant. Researchers reported relationships with Bartlett, KITE, Pfizer, Seattle Genetics, Roche-Genentech, Celgene, Pharmacyclics, and Gilead.
SOURCE: Tallarico M et al. J Geriatr Oncol. 2018 Apr 16. pii: S1879-4068(18)30131-0.
Older patients with chronic lymphocytic leukemia (CLL) and non-Hodgkin lymphoma (NHL) have an increased odds of experiencing treatment-related toxicities, even when treated with novel agents, according to findings reported in the Journal of Geriatric Oncology.
An analysis of 1,199 patients showed that CLL patients aged 65 years and older had significantly higher odds than younger patients of developing a grade three or four hematologic toxicity (adjusted odds ratio, 1.70; P = .009; 95% confidence interval, 1.57-1.84) or nonhematologic toxicity (OR, 1.47; P = .022; 95% CI, 1.39-1.55).
Investigators analyzed data obtained from the Alliance for Clinical Trials in Oncology to compare the incidence of toxicities between age groups. Of the 1,199 patients included in the analysis, 409 were 65 years of age or older, and 790 were younger than 65 years. Among these patients, 438 received only therapy with novel agents including biologic combinations, monoclonal antibodies, cell cycle inhibitors, chemoimmunotherapy, and immunomodulators, and 761 received novel agents in addition to chemotherapy.
Overall, 68% of CLL patients and 35% of NHL patients had at least one grade three or four hematologic toxicity, compared with 48% and 54% for nonhematologic toxicities, respectively.
Older CLL patients with at least one grade three or four toxicity in the first 3 months had similar overall survival (OS) and progression-free survival (PFS) as those without a toxicity. In contrast, older NHL patients with at least one grade three or four hematologic toxicity in the first 3 months had worse OS (HR, 3.14; P = .006; 95% CI, 2.25-4.39) and PFS (HR, 3.06; P = .011; 95% CI, 2.10-4.45) than patients without these toxicities. Nonhematologic toxicities were not significantly associated with survival outcomes for patients with NHL.
“The observed associations between hematologic toxicity and OS/PFS among older patients with NHL require further investigation,” the researchers wrote. “These findings could represent a direct effect of toxicity due to decreased physiologic reserve, decreased drug clearance, or an increased sensitivity of tissue to novel agents.”
The study was supported by a National Institutes of Health grant. Researchers reported relationships with Bartlett, KITE, Pfizer, Seattle Genetics, Roche-Genentech, Celgene, Pharmacyclics, and Gilead.
SOURCE: Tallarico M et al. J Geriatr Oncol. 2018 Apr 16. pii: S1879-4068(18)30131-0.
FROM THE JOURNAL OF GERIATRIC ONCOLOGY
Key clinical point:
Major finding: Older CLL patients had significantly higher odds of developing a grade three or four hematologic toxicity (adjusted odds ratio, 1.70; P = .009; 95% confidence interval, 1.57-1.84) or nonhematologic toxicity (OR, 1.47; P = .022; 95% CI 1.39-1.55).
Study details: An analysis of data from 1,199 CLL and NHL patients in the Alliance for Clinical Trials in Oncology.
Disclosures: The study was supported by a National Institutes of Health grant. Researchers reported relationships with Bartlett, KITE, Pfizer, Seattle Genetics, Roche-Genentech, Celgene, Pharmacyclics, and Gilead.
Source: Tallarico M et al. J Geriatr Oncol. 2018 Apr 16. pii: S1879-4068(18)30131-0.
Physical inactivity linked to lymphoma risk
A lifetime of physical inactivity could significantly increase the risk of developing both Hodgkin and non-Hodgkin lymphoma, according to a case-control study.
Researchers examined self-reported lifetime physical activity in 87 patients with Hodgkin lymphoma and 236 patients with non-Hodgkin lymphoma, as well as 1,300 cancer-free controls.
Researchers also found a nearly threefold higher risk of Hodgkin lymphoma among overweight and obese individuals who were physically inactive, compared with those who were active (odds ratio, 2.79; P = .01). Similarly, physically inactive individuals who had never smoked had a greater than threefold increase in risk, compared with never-smokers who were active (OR, 3.30; P less than .001). But despite these significant associations for smoking and weight, the small samples sizes meant they were not significant in multivariable-adjusted models, the researchers noted. For non-Hodgkin lymphoma, the associations between obesity/overweight and smoking status were also not statistically significant in multivariable-adjusted models.
Previous studies looking at the role of physical activity in Hodgkin and non-Hodgkin lymphoma had yielded mixed and inconclusive results. Since then, researchers have begun to specifically consider the role of physical inactivity, rather than physical activity, as the exposure of interest.
“An additional advantage of identifying inactivity as the exposure of interest is that a body of literature suggests that those who are at the lower end of the physical activity continuum are less likely to overreport physical activity than those who engage in greater levels of physical activity,” the researchers wrote.
They acknowledged that relying on self-reported levels of physical activity was a limitation of their study. However, they also pointed out that previous research suggested that simplified physical activity questionnaires that took a dichotomous approach to activity/inactivity were effective at identifying the most physically inactivity individuals in a population.
“Continued evidence for adverse associations between physical inactivity and cancer endpoints substantiate a powerful public health message that any amount of regular activity appears to associate with decreased cancer risk,” they wrote.
One researcher was supported by the New York State Department of Health. No conflicts of interest were reported.
SOURCE: Etter JL et al. Leuk Res. 2018 Mar 27;69:7-11.
A lifetime of physical inactivity could significantly increase the risk of developing both Hodgkin and non-Hodgkin lymphoma, according to a case-control study.
Researchers examined self-reported lifetime physical activity in 87 patients with Hodgkin lymphoma and 236 patients with non-Hodgkin lymphoma, as well as 1,300 cancer-free controls.
Researchers also found a nearly threefold higher risk of Hodgkin lymphoma among overweight and obese individuals who were physically inactive, compared with those who were active (odds ratio, 2.79; P = .01). Similarly, physically inactive individuals who had never smoked had a greater than threefold increase in risk, compared with never-smokers who were active (OR, 3.30; P less than .001). But despite these significant associations for smoking and weight, the small samples sizes meant they were not significant in multivariable-adjusted models, the researchers noted. For non-Hodgkin lymphoma, the associations between obesity/overweight and smoking status were also not statistically significant in multivariable-adjusted models.
Previous studies looking at the role of physical activity in Hodgkin and non-Hodgkin lymphoma had yielded mixed and inconclusive results. Since then, researchers have begun to specifically consider the role of physical inactivity, rather than physical activity, as the exposure of interest.
“An additional advantage of identifying inactivity as the exposure of interest is that a body of literature suggests that those who are at the lower end of the physical activity continuum are less likely to overreport physical activity than those who engage in greater levels of physical activity,” the researchers wrote.
They acknowledged that relying on self-reported levels of physical activity was a limitation of their study. However, they also pointed out that previous research suggested that simplified physical activity questionnaires that took a dichotomous approach to activity/inactivity were effective at identifying the most physically inactivity individuals in a population.
“Continued evidence for adverse associations between physical inactivity and cancer endpoints substantiate a powerful public health message that any amount of regular activity appears to associate with decreased cancer risk,” they wrote.
One researcher was supported by the New York State Department of Health. No conflicts of interest were reported.
SOURCE: Etter JL et al. Leuk Res. 2018 Mar 27;69:7-11.
A lifetime of physical inactivity could significantly increase the risk of developing both Hodgkin and non-Hodgkin lymphoma, according to a case-control study.
Researchers examined self-reported lifetime physical activity in 87 patients with Hodgkin lymphoma and 236 patients with non-Hodgkin lymphoma, as well as 1,300 cancer-free controls.
Researchers also found a nearly threefold higher risk of Hodgkin lymphoma among overweight and obese individuals who were physically inactive, compared with those who were active (odds ratio, 2.79; P = .01). Similarly, physically inactive individuals who had never smoked had a greater than threefold increase in risk, compared with never-smokers who were active (OR, 3.30; P less than .001). But despite these significant associations for smoking and weight, the small samples sizes meant they were not significant in multivariable-adjusted models, the researchers noted. For non-Hodgkin lymphoma, the associations between obesity/overweight and smoking status were also not statistically significant in multivariable-adjusted models.
Previous studies looking at the role of physical activity in Hodgkin and non-Hodgkin lymphoma had yielded mixed and inconclusive results. Since then, researchers have begun to specifically consider the role of physical inactivity, rather than physical activity, as the exposure of interest.
“An additional advantage of identifying inactivity as the exposure of interest is that a body of literature suggests that those who are at the lower end of the physical activity continuum are less likely to overreport physical activity than those who engage in greater levels of physical activity,” the researchers wrote.
They acknowledged that relying on self-reported levels of physical activity was a limitation of their study. However, they also pointed out that previous research suggested that simplified physical activity questionnaires that took a dichotomous approach to activity/inactivity were effective at identifying the most physically inactivity individuals in a population.
“Continued evidence for adverse associations between physical inactivity and cancer endpoints substantiate a powerful public health message that any amount of regular activity appears to associate with decreased cancer risk,” they wrote.
One researcher was supported by the New York State Department of Health. No conflicts of interest were reported.
SOURCE: Etter JL et al. Leuk Res. 2018 Mar 27;69:7-11.
FROM LEUKEMIA RESEARCH
Key clinical point:
Major finding: A lifetime of physical inactivity is associated with a 90% increased risk of Hodgkin lymphoma and a 35% increased risk of non-Hodgkin lymphoma.Study details: A case-control study in 323 patients with Hodgkin or non-Hodgkin lymphoma and 1,300 cancer-free controls.
Disclosures: One researcher was supported by the New York State Department of Health. No conflicts of interest were declared.
Source: Etter JL et al. Leuk Res. 2018 Mar 27;69:7-11.
5-year data show deepening response with ibrutinib in CLL
Single-agent ibrutinib has had sustained efficacy and a rate of complete response that has increased over time, according to a 5-year follow-up report including 132 patients with chronic lymphocytic leukemia (CLL).
Efficacy has been maintained in both treatment-naive and relapsed/refractory CLL, despite the presence of high-risk genomic features in many patients, investigators reported in Blood.
Treatment has been well tolerated, and the occurrence of severe adverse events has diminished over time, according to Susan M. O’Brien, MD, of the Chao Family Comprehensive Cancer Center, University of California, Irvine, and her colleagues.
“The safety profile of ibrutinib over time remains acceptable and manageable, allowing almost one-half of the patients (48%) to be treated for more than 4 years and thus maximize response,” the investigators wrote.
The report was based on 5-year follow-up of patients with CLL who had been enrolled in a phase 1b/2 study (PCYC-1102) and an extension study (PCYC-1103). A total of 132 patients were evaluated, including 101 with relapsed/refractory disease and 31 who were treatment naive.
The overall response rate remained high, at 89% in this 5-year follow-up. Complete response rates increased over time, reaching 29% in treatment-naive patients and 10% in relapsed/refractory patients. In a previous report on 3-year follow-up for these patients, investigators reported complete response rates of 23% in the previously untreated group and 7% in the relapsed/refractory group. The new findings demonstrate “deepening of responses” with continued ibrutinib therapy, Dr. O’Brien and her coauthors wrote.
The 5-year rate of progression-free survival was 44% for relapsed/refractory patients and 92% for treatment-naive patients in this study. Median progression-free survival was 51 months for the relapsed/refractory cohort. “[Progression-free survival] with single-agent ibrutinib in [treatment-naive] patients appears particularly favorable, because the median has not been reached,” investigators wrote.
Adverse events that limited treatment were more frequent during the first year of treatment than in subsequent years, data show, while new onset of neutropenia and thrombocytopenia decreased over time.
The overall response rate was high even in patients with high-risk genetic features. Rates of overall response ranged from 79% to 97%, depending on genomic subgroup. That held true for relapsed/refractory CLL patients with del(17p), a significant negative prognostic factor for survival. In that group, the overall response rate was 79% and the duration of response was 31 months, representing “promising single-agent efficacy” in that group, investigators said.
Pharmacyclics, an AbbVie Company, provided funding for the study and writing support. The study was also supported by grants from the National Institutes of Health and a private foundation. Dr. O’Brien reported ties to AbbVie, Janssen, and Pharmacyclics. Other investigators reported financial relationships with various pharmaceutical companies.
SOURCE: O’Brien S et al. Blood. 2018;131(17):1910-9.
This report on the 5-year experience with single-agent ibrutinib in chronic lymphocytic leukemia (CLL) is a step forward in knowledge of the drug’s natural history, according to Jennifer R. Brown, MD, PhD.
“Ibrutinib data are starting to mature, but much opportunity for growth remains,” Dr. Brown said in an editorial.
One notable update in the report is that a median, progression-free survival has been reached in patients with relapsed/refractory CLL. The reported 51-month median progression-free survival is “strikingly good” in this cohort of patients with high-risk disease, and compares favorably to older regimens in similar patient populations, she said.
Regarding previously untreated CLL patients, it is notable that 45% of this cohort discontinued treatment, many apparently after year 4, Dr. Brown said. The finding that median duration on therapy was just about 5.5 years in the cohort could be “potentially quite useful” in counseling patients, if confirmed in a larger cohort, she added.
Given the discontinuation data, one unanswered question is the durability of remission after stopping ibrutinib in a “deep but probably not complete remission” versus continuing therapy.
“Further follow-up of patients who discontinue without disease progression, as well as systematic investigation of time-limited therapy, including novel likely combination approaches, is clearly warranted,” Dr. Brown said in her editorial.
Dr. Jennifer R. Brown is with the Dana-Farber Cancer Institute in Boston. These comments are adapted an accompanying editorial ( Blood. 2018;131:1880-2 ). Dr. Brown reported ties to Janssen, Pharmacyclics, AstraZeneca, Sun, Redx, Sunesis, Loxo, Gilead, TG Therapeutics, Verastem, and AbbVie.
This report on the 5-year experience with single-agent ibrutinib in chronic lymphocytic leukemia (CLL) is a step forward in knowledge of the drug’s natural history, according to Jennifer R. Brown, MD, PhD.
“Ibrutinib data are starting to mature, but much opportunity for growth remains,” Dr. Brown said in an editorial.
One notable update in the report is that a median, progression-free survival has been reached in patients with relapsed/refractory CLL. The reported 51-month median progression-free survival is “strikingly good” in this cohort of patients with high-risk disease, and compares favorably to older regimens in similar patient populations, she said.
Regarding previously untreated CLL patients, it is notable that 45% of this cohort discontinued treatment, many apparently after year 4, Dr. Brown said. The finding that median duration on therapy was just about 5.5 years in the cohort could be “potentially quite useful” in counseling patients, if confirmed in a larger cohort, she added.
Given the discontinuation data, one unanswered question is the durability of remission after stopping ibrutinib in a “deep but probably not complete remission” versus continuing therapy.
“Further follow-up of patients who discontinue without disease progression, as well as systematic investigation of time-limited therapy, including novel likely combination approaches, is clearly warranted,” Dr. Brown said in her editorial.
Dr. Jennifer R. Brown is with the Dana-Farber Cancer Institute in Boston. These comments are adapted an accompanying editorial ( Blood. 2018;131:1880-2 ). Dr. Brown reported ties to Janssen, Pharmacyclics, AstraZeneca, Sun, Redx, Sunesis, Loxo, Gilead, TG Therapeutics, Verastem, and AbbVie.
This report on the 5-year experience with single-agent ibrutinib in chronic lymphocytic leukemia (CLL) is a step forward in knowledge of the drug’s natural history, according to Jennifer R. Brown, MD, PhD.
“Ibrutinib data are starting to mature, but much opportunity for growth remains,” Dr. Brown said in an editorial.
One notable update in the report is that a median, progression-free survival has been reached in patients with relapsed/refractory CLL. The reported 51-month median progression-free survival is “strikingly good” in this cohort of patients with high-risk disease, and compares favorably to older regimens in similar patient populations, she said.
Regarding previously untreated CLL patients, it is notable that 45% of this cohort discontinued treatment, many apparently after year 4, Dr. Brown said. The finding that median duration on therapy was just about 5.5 years in the cohort could be “potentially quite useful” in counseling patients, if confirmed in a larger cohort, she added.
Given the discontinuation data, one unanswered question is the durability of remission after stopping ibrutinib in a “deep but probably not complete remission” versus continuing therapy.
“Further follow-up of patients who discontinue without disease progression, as well as systematic investigation of time-limited therapy, including novel likely combination approaches, is clearly warranted,” Dr. Brown said in her editorial.
Dr. Jennifer R. Brown is with the Dana-Farber Cancer Institute in Boston. These comments are adapted an accompanying editorial ( Blood. 2018;131:1880-2 ). Dr. Brown reported ties to Janssen, Pharmacyclics, AstraZeneca, Sun, Redx, Sunesis, Loxo, Gilead, TG Therapeutics, Verastem, and AbbVie.
Single-agent ibrutinib has had sustained efficacy and a rate of complete response that has increased over time, according to a 5-year follow-up report including 132 patients with chronic lymphocytic leukemia (CLL).
Efficacy has been maintained in both treatment-naive and relapsed/refractory CLL, despite the presence of high-risk genomic features in many patients, investigators reported in Blood.
Treatment has been well tolerated, and the occurrence of severe adverse events has diminished over time, according to Susan M. O’Brien, MD, of the Chao Family Comprehensive Cancer Center, University of California, Irvine, and her colleagues.
“The safety profile of ibrutinib over time remains acceptable and manageable, allowing almost one-half of the patients (48%) to be treated for more than 4 years and thus maximize response,” the investigators wrote.
The report was based on 5-year follow-up of patients with CLL who had been enrolled in a phase 1b/2 study (PCYC-1102) and an extension study (PCYC-1103). A total of 132 patients were evaluated, including 101 with relapsed/refractory disease and 31 who were treatment naive.
The overall response rate remained high, at 89% in this 5-year follow-up. Complete response rates increased over time, reaching 29% in treatment-naive patients and 10% in relapsed/refractory patients. In a previous report on 3-year follow-up for these patients, investigators reported complete response rates of 23% in the previously untreated group and 7% in the relapsed/refractory group. The new findings demonstrate “deepening of responses” with continued ibrutinib therapy, Dr. O’Brien and her coauthors wrote.
The 5-year rate of progression-free survival was 44% for relapsed/refractory patients and 92% for treatment-naive patients in this study. Median progression-free survival was 51 months for the relapsed/refractory cohort. “[Progression-free survival] with single-agent ibrutinib in [treatment-naive] patients appears particularly favorable, because the median has not been reached,” investigators wrote.
Adverse events that limited treatment were more frequent during the first year of treatment than in subsequent years, data show, while new onset of neutropenia and thrombocytopenia decreased over time.
The overall response rate was high even in patients with high-risk genetic features. Rates of overall response ranged from 79% to 97%, depending on genomic subgroup. That held true for relapsed/refractory CLL patients with del(17p), a significant negative prognostic factor for survival. In that group, the overall response rate was 79% and the duration of response was 31 months, representing “promising single-agent efficacy” in that group, investigators said.
Pharmacyclics, an AbbVie Company, provided funding for the study and writing support. The study was also supported by grants from the National Institutes of Health and a private foundation. Dr. O’Brien reported ties to AbbVie, Janssen, and Pharmacyclics. Other investigators reported financial relationships with various pharmaceutical companies.
SOURCE: O’Brien S et al. Blood. 2018;131(17):1910-9.
Single-agent ibrutinib has had sustained efficacy and a rate of complete response that has increased over time, according to a 5-year follow-up report including 132 patients with chronic lymphocytic leukemia (CLL).
Efficacy has been maintained in both treatment-naive and relapsed/refractory CLL, despite the presence of high-risk genomic features in many patients, investigators reported in Blood.
Treatment has been well tolerated, and the occurrence of severe adverse events has diminished over time, according to Susan M. O’Brien, MD, of the Chao Family Comprehensive Cancer Center, University of California, Irvine, and her colleagues.
“The safety profile of ibrutinib over time remains acceptable and manageable, allowing almost one-half of the patients (48%) to be treated for more than 4 years and thus maximize response,” the investigators wrote.
The report was based on 5-year follow-up of patients with CLL who had been enrolled in a phase 1b/2 study (PCYC-1102) and an extension study (PCYC-1103). A total of 132 patients were evaluated, including 101 with relapsed/refractory disease and 31 who were treatment naive.
The overall response rate remained high, at 89% in this 5-year follow-up. Complete response rates increased over time, reaching 29% in treatment-naive patients and 10% in relapsed/refractory patients. In a previous report on 3-year follow-up for these patients, investigators reported complete response rates of 23% in the previously untreated group and 7% in the relapsed/refractory group. The new findings demonstrate “deepening of responses” with continued ibrutinib therapy, Dr. O’Brien and her coauthors wrote.
The 5-year rate of progression-free survival was 44% for relapsed/refractory patients and 92% for treatment-naive patients in this study. Median progression-free survival was 51 months for the relapsed/refractory cohort. “[Progression-free survival] with single-agent ibrutinib in [treatment-naive] patients appears particularly favorable, because the median has not been reached,” investigators wrote.
Adverse events that limited treatment were more frequent during the first year of treatment than in subsequent years, data show, while new onset of neutropenia and thrombocytopenia decreased over time.
The overall response rate was high even in patients with high-risk genetic features. Rates of overall response ranged from 79% to 97%, depending on genomic subgroup. That held true for relapsed/refractory CLL patients with del(17p), a significant negative prognostic factor for survival. In that group, the overall response rate was 79% and the duration of response was 31 months, representing “promising single-agent efficacy” in that group, investigators said.
Pharmacyclics, an AbbVie Company, provided funding for the study and writing support. The study was also supported by grants from the National Institutes of Health and a private foundation. Dr. O’Brien reported ties to AbbVie, Janssen, and Pharmacyclics. Other investigators reported financial relationships with various pharmaceutical companies.
SOURCE: O’Brien S et al. Blood. 2018;131(17):1910-9.
FROM BLOOD
Key clinical point:
Major finding: The 5-year rate of progression-free survival was 44% for relapsed/refractory patients and 92% for treatment-naive patients.
Study details: Report on 5-year follow-up of 132 patients with CLL enrolled in a phase 1b/2 study (PCYC-1102) and an extension study (PCYC-1103).
Disclosures: Pharmacyclics, an AbbVie Company, provided funding for the study and writing support. The study was also supported by grants from the National Institutes of Health and a private foundation. The authors reported ties to Pharmacyclics and other companies.
Source: O’Brien S et al. Blood. 2018;131(17):1910-9.
In young MCL patients, optimal treatment may vary
, according to a recent review published in Best Practice & Research Clinical Haematology.
Use of high-dose cytarabine plus rituximab as frontline treatment is well established, with median overall survival now exceeding 10 years, said Rory McCulloch, MD, and Simon Rule, MD, of the department of Haematology, Derriford Hospital, Plymouth, England. However, there is no proven benefit to conventional therapy in patients with asymptomatic, non-bulky disease, making a watch-and-wait strategy appropriate for these patients, the authors said.
On the opposite end of the spectrum there is a subgroup of patients characterized by TP53 mutations and poor prognostic index scores that have poor outcomes in spite of conventional therapy.
These patients might have improved outcomes either with early allogeneic haematopoietic cell transplantation (allo-HCT), or, especially, clinical trials of novel agents in the upfront setting, the authors noted.
“There are a host of exciting novel agents, most prominently the BTK inhibitors, that are game changing with respect to their activity,” wrote Dr. McCulloch and Dr. Rule. “Based on the long-term results seen with conventional therapy, it is premature to be considering such new drugs in the frontline setting outside the context of a clinical trial, but it is hard to believe they will not become incorporated into treatment protocols in the future.”
Watch-and-wait treatment strategies for lower-risk patients are supported by the results of two single-center, retrospective studies published in 2009 that suggest the practice has no adverse impact on overall survival. More recent registry studies, published in 2016 and 2017, have shown that a significant proportion of patients can be managed according to the watch-and-wait strategy.
Although it’s been challenging to precisely define the group of patients for whom watch-and-wait is appropriate, enrollment criteria for studies have generally specified that patients be asymptomatic with non-bulky disease and non-blastoid morphology, they said.
For the minority of patients presenting with high-risk disease, allo-HCT may improve outcomes, according to Dr. McCulloch and Dr. Rule. One prospective study evaluating allogeneic transplants in frontline therapy showed favorable outcomes in younger patients, although few high-risk patients were enrolled.
However, a second prospective study of allo-HCT, involving 25 patients with untreated MCL in the United Kingdom, demonstrated a 2-year overall survival of 80%. “Although immature, the results are encouraging and provide data to support frontline allogeneic transplant for some patients,” Dr. McCulloch and Dr. Rule said in a comment on that study.
Novel agent studies have produced mixed results in treatment settings relevant to younger, high-risk MCL patients, though key trials are ongoing that could change practice.
One phase 2 study is evaluating obinituzumab, the fully humanized anti-CD20, as part of MCL induction and maintenance. Results of that study could challenge the role of rituximab in maintenance, the review authors noted. Likewise, the immune modulator lenalidomide has been evaluated as maintenance in an Italian phase 3 trial that recently closed to recruitment.
BTK inhibitors represent a “step change” in the management of MCL, according to the authors of this review.
“It has become clear that earlier use of ibrutinib leads to an improved outcome [in MCL] and it is logical to extend this into frontline treatment,” they wrote.
A randomized phase 3, multinational trial known as TRIANGLE, now open to recruitment, is designed to evaluate use of ibrutinib in both induction and maintenance. Investigators plan to enroll 870 patients into the three-arm study, which will also evaluate the use of ibrutinib as part of induction, but with no autologous stem cell transplant.
“The trial is the first to randomize to a non-ASCT arm since the introduction of rituximab and cytarabine to the induction regimen and the results have the potential to significantly reduce chemotherapy intensity and toxicity,” the authors said.
Dr. Rule reported consulting for Pharmacyclics, Napp, Sunesis, Acerta Pharma, Kite, AstraZeneca, Roche, Janssen, and Celgene, and research funding from Janssen, Celgene, and GSK. Dr. McCulloch reported having no financial disclosures.
SOURCE: McCulloch R et al. Best Pract Res Clin Haematol. 2018 Mar;31(1):90-8.
, according to a recent review published in Best Practice & Research Clinical Haematology.
Use of high-dose cytarabine plus rituximab as frontline treatment is well established, with median overall survival now exceeding 10 years, said Rory McCulloch, MD, and Simon Rule, MD, of the department of Haematology, Derriford Hospital, Plymouth, England. However, there is no proven benefit to conventional therapy in patients with asymptomatic, non-bulky disease, making a watch-and-wait strategy appropriate for these patients, the authors said.
On the opposite end of the spectrum there is a subgroup of patients characterized by TP53 mutations and poor prognostic index scores that have poor outcomes in spite of conventional therapy.
These patients might have improved outcomes either with early allogeneic haematopoietic cell transplantation (allo-HCT), or, especially, clinical trials of novel agents in the upfront setting, the authors noted.
“There are a host of exciting novel agents, most prominently the BTK inhibitors, that are game changing with respect to their activity,” wrote Dr. McCulloch and Dr. Rule. “Based on the long-term results seen with conventional therapy, it is premature to be considering such new drugs in the frontline setting outside the context of a clinical trial, but it is hard to believe they will not become incorporated into treatment protocols in the future.”
Watch-and-wait treatment strategies for lower-risk patients are supported by the results of two single-center, retrospective studies published in 2009 that suggest the practice has no adverse impact on overall survival. More recent registry studies, published in 2016 and 2017, have shown that a significant proportion of patients can be managed according to the watch-and-wait strategy.
Although it’s been challenging to precisely define the group of patients for whom watch-and-wait is appropriate, enrollment criteria for studies have generally specified that patients be asymptomatic with non-bulky disease and non-blastoid morphology, they said.
For the minority of patients presenting with high-risk disease, allo-HCT may improve outcomes, according to Dr. McCulloch and Dr. Rule. One prospective study evaluating allogeneic transplants in frontline therapy showed favorable outcomes in younger patients, although few high-risk patients were enrolled.
However, a second prospective study of allo-HCT, involving 25 patients with untreated MCL in the United Kingdom, demonstrated a 2-year overall survival of 80%. “Although immature, the results are encouraging and provide data to support frontline allogeneic transplant for some patients,” Dr. McCulloch and Dr. Rule said in a comment on that study.
Novel agent studies have produced mixed results in treatment settings relevant to younger, high-risk MCL patients, though key trials are ongoing that could change practice.
One phase 2 study is evaluating obinituzumab, the fully humanized anti-CD20, as part of MCL induction and maintenance. Results of that study could challenge the role of rituximab in maintenance, the review authors noted. Likewise, the immune modulator lenalidomide has been evaluated as maintenance in an Italian phase 3 trial that recently closed to recruitment.
BTK inhibitors represent a “step change” in the management of MCL, according to the authors of this review.
“It has become clear that earlier use of ibrutinib leads to an improved outcome [in MCL] and it is logical to extend this into frontline treatment,” they wrote.
A randomized phase 3, multinational trial known as TRIANGLE, now open to recruitment, is designed to evaluate use of ibrutinib in both induction and maintenance. Investigators plan to enroll 870 patients into the three-arm study, which will also evaluate the use of ibrutinib as part of induction, but with no autologous stem cell transplant.
“The trial is the first to randomize to a non-ASCT arm since the introduction of rituximab and cytarabine to the induction regimen and the results have the potential to significantly reduce chemotherapy intensity and toxicity,” the authors said.
Dr. Rule reported consulting for Pharmacyclics, Napp, Sunesis, Acerta Pharma, Kite, AstraZeneca, Roche, Janssen, and Celgene, and research funding from Janssen, Celgene, and GSK. Dr. McCulloch reported having no financial disclosures.
SOURCE: McCulloch R et al. Best Pract Res Clin Haematol. 2018 Mar;31(1):90-8.
, according to a recent review published in Best Practice & Research Clinical Haematology.
Use of high-dose cytarabine plus rituximab as frontline treatment is well established, with median overall survival now exceeding 10 years, said Rory McCulloch, MD, and Simon Rule, MD, of the department of Haematology, Derriford Hospital, Plymouth, England. However, there is no proven benefit to conventional therapy in patients with asymptomatic, non-bulky disease, making a watch-and-wait strategy appropriate for these patients, the authors said.
On the opposite end of the spectrum there is a subgroup of patients characterized by TP53 mutations and poor prognostic index scores that have poor outcomes in spite of conventional therapy.
These patients might have improved outcomes either with early allogeneic haematopoietic cell transplantation (allo-HCT), or, especially, clinical trials of novel agents in the upfront setting, the authors noted.
“There are a host of exciting novel agents, most prominently the BTK inhibitors, that are game changing with respect to their activity,” wrote Dr. McCulloch and Dr. Rule. “Based on the long-term results seen with conventional therapy, it is premature to be considering such new drugs in the frontline setting outside the context of a clinical trial, but it is hard to believe they will not become incorporated into treatment protocols in the future.”
Watch-and-wait treatment strategies for lower-risk patients are supported by the results of two single-center, retrospective studies published in 2009 that suggest the practice has no adverse impact on overall survival. More recent registry studies, published in 2016 and 2017, have shown that a significant proportion of patients can be managed according to the watch-and-wait strategy.
Although it’s been challenging to precisely define the group of patients for whom watch-and-wait is appropriate, enrollment criteria for studies have generally specified that patients be asymptomatic with non-bulky disease and non-blastoid morphology, they said.
For the minority of patients presenting with high-risk disease, allo-HCT may improve outcomes, according to Dr. McCulloch and Dr. Rule. One prospective study evaluating allogeneic transplants in frontline therapy showed favorable outcomes in younger patients, although few high-risk patients were enrolled.
However, a second prospective study of allo-HCT, involving 25 patients with untreated MCL in the United Kingdom, demonstrated a 2-year overall survival of 80%. “Although immature, the results are encouraging and provide data to support frontline allogeneic transplant for some patients,” Dr. McCulloch and Dr. Rule said in a comment on that study.
Novel agent studies have produced mixed results in treatment settings relevant to younger, high-risk MCL patients, though key trials are ongoing that could change practice.
One phase 2 study is evaluating obinituzumab, the fully humanized anti-CD20, as part of MCL induction and maintenance. Results of that study could challenge the role of rituximab in maintenance, the review authors noted. Likewise, the immune modulator lenalidomide has been evaluated as maintenance in an Italian phase 3 trial that recently closed to recruitment.
BTK inhibitors represent a “step change” in the management of MCL, according to the authors of this review.
“It has become clear that earlier use of ibrutinib leads to an improved outcome [in MCL] and it is logical to extend this into frontline treatment,” they wrote.
A randomized phase 3, multinational trial known as TRIANGLE, now open to recruitment, is designed to evaluate use of ibrutinib in both induction and maintenance. Investigators plan to enroll 870 patients into the three-arm study, which will also evaluate the use of ibrutinib as part of induction, but with no autologous stem cell transplant.
“The trial is the first to randomize to a non-ASCT arm since the introduction of rituximab and cytarabine to the induction regimen and the results have the potential to significantly reduce chemotherapy intensity and toxicity,” the authors said.
Dr. Rule reported consulting for Pharmacyclics, Napp, Sunesis, Acerta Pharma, Kite, AstraZeneca, Roche, Janssen, and Celgene, and research funding from Janssen, Celgene, and GSK. Dr. McCulloch reported having no financial disclosures.
SOURCE: McCulloch R et al. Best Pract Res Clin Haematol. 2018 Mar;31(1):90-8.
FROM BEST PRACTICE & RESEARCH CLINICAL HAEMATOLOGY
Early results favor combo IL-15/anti-CD20 in indolent NHL
CHICAGO – A combination of an immunostimulatory IL-15-based agent, ALT-803, with a therapeutic monoclonal antibody (mAb) against CD20, was well tolerated and had clinical activity in patients with indolent non-Hodgkin lymphoma (iNHL), according to preliminary findings from a phase 1 study.
“The cancer immunotherapy breakthrough that happened several years ago continues year after year, with a plethora of different modalities of immunotherapy at our disposal,” Todd A. Fehniger, MD, PhD, said at the annual meeting of the American Association for Cancer Research.
Immunotherapy with anti-CD20 mAbs, alone or in combination with chemotherapy, is a standard therapy for iNHL patients. Since iNHL cells express CD20, targeting it with mAbs triggers antitumor responses via cell surface receptors resulting in a potent antibody-dependent cellular toxicity. However, response in patients is highly heterogeneous, with relapse within a few months in a subset of patients. In addition, chemotherapeutic combinations can be toxic and result in serious and long-term complications.
“Relapsed or refractory iNHL is not curable and treatment strategies without long-term complications are needed,” said Dr. Fehniger, associate professor of medicine at Washington University, St. Louis.
In an attempt to address this, Dr. Fehniger and his colleagues combined rituximab, an anti-CD20 antibody, with a relatively new IL-15 agonist immunostimulatory agent called ALT-803.
In the phase 1 trial, the researchers enrolled patients with indolent non-Hodgkin lymphoma who had relapsed after at least 1 prior to CD20 antibody containing therapy. The study was a standard 3+3 dose escalation design with rituximab administered by intravenous infusion, 375 mg/m2 in four weekly doses, followed by a rest and four consolidation doses every 8 weeks for four cycles.
ALT-803 was administered concurrently at dose levels of 1 mcg/kg, 3 mcg/kg, and 6 mcg/kg IV followed by 6 mcg/kg, 10 mcg/kg, 15 mcg/kg, and 20 mcg/kg subcutaneously.
In total, 21 patients were treated: 16 patients had follicular lymphoma, four patients had marginal zone lymphoma, and one patient had small lymphocytic lymphoma. The median prior therapies received was two (range: 1-18) and five patients were treated who were refractory to prior anti-CD20 MAb therapy.
ALT-803 was well tolerated with no dose limiting toxicities or grade 4 or 5 adverse events. No patients discontinued ALT-803 and the recommended phase 2 dose was 20 mcg/kg subcutaneously. Grade 3 adverse events, regardless of attribution to ALT-803, included transient hypertension (14%), anemia (5%), nausea (5%), chills (5%), fever (5%), neutropenia (5%), and hyperglycemia (5%).
“Patients who received [subcutaneous] ALT-803 developed a unique injection site rash reaction that peaked 7-10 days later but resolved typically within 14 days. It was self-limited and resolved on its own,” Dr. Fehniger said.
At the time of the presentation, the best overall response rate was achieved in 11 of 21 patients (52%), with 9 complete responders (43%), and 2 partial responders (10%).
Of the 12 patients treated with ALT-803 subcutaneously, 11 patients had either stable disease, or partial or complete responses. All 11 patients remained on study and were in consolidation or follow-up and have not relapsed, Dr. Fehniger reported.
Among the five rituximab-refractory patients, the researchers observed one complete response, two patients with stable disease (45% and 36% tumor volume decrease), and two patients with partial disease. The durability of the responses can only be understood with longer follow-up, Dr. Fehniger said.
The peripheral blood of the patients was analyzed via flow cytometry and mass cytometry. Over the duration of four weekly doses, there was an increase in percentage (sixfold, P less than .001) and absolute number (10-fold, P less than .001) of natural killer cells at the 15-mcg/kg and 20-mcg/kg subcutaneous dose levels of ALT-803.
These results suggest that further studies of ALT-803 with other therapeutic targeting mAbs, or other immunotherapy modalities, are warranted, the researchers concluded.
Dr. Fehniger reported research funding from Altor BioScience.
SOURCE: Fehniger TA et al. AACR Annual Meeting, Abstract CT146.
CHICAGO – A combination of an immunostimulatory IL-15-based agent, ALT-803, with a therapeutic monoclonal antibody (mAb) against CD20, was well tolerated and had clinical activity in patients with indolent non-Hodgkin lymphoma (iNHL), according to preliminary findings from a phase 1 study.
“The cancer immunotherapy breakthrough that happened several years ago continues year after year, with a plethora of different modalities of immunotherapy at our disposal,” Todd A. Fehniger, MD, PhD, said at the annual meeting of the American Association for Cancer Research.
Immunotherapy with anti-CD20 mAbs, alone or in combination with chemotherapy, is a standard therapy for iNHL patients. Since iNHL cells express CD20, targeting it with mAbs triggers antitumor responses via cell surface receptors resulting in a potent antibody-dependent cellular toxicity. However, response in patients is highly heterogeneous, with relapse within a few months in a subset of patients. In addition, chemotherapeutic combinations can be toxic and result in serious and long-term complications.
“Relapsed or refractory iNHL is not curable and treatment strategies without long-term complications are needed,” said Dr. Fehniger, associate professor of medicine at Washington University, St. Louis.
In an attempt to address this, Dr. Fehniger and his colleagues combined rituximab, an anti-CD20 antibody, with a relatively new IL-15 agonist immunostimulatory agent called ALT-803.
In the phase 1 trial, the researchers enrolled patients with indolent non-Hodgkin lymphoma who had relapsed after at least 1 prior to CD20 antibody containing therapy. The study was a standard 3+3 dose escalation design with rituximab administered by intravenous infusion, 375 mg/m2 in four weekly doses, followed by a rest and four consolidation doses every 8 weeks for four cycles.
ALT-803 was administered concurrently at dose levels of 1 mcg/kg, 3 mcg/kg, and 6 mcg/kg IV followed by 6 mcg/kg, 10 mcg/kg, 15 mcg/kg, and 20 mcg/kg subcutaneously.
In total, 21 patients were treated: 16 patients had follicular lymphoma, four patients had marginal zone lymphoma, and one patient had small lymphocytic lymphoma. The median prior therapies received was two (range: 1-18) and five patients were treated who were refractory to prior anti-CD20 MAb therapy.
ALT-803 was well tolerated with no dose limiting toxicities or grade 4 or 5 adverse events. No patients discontinued ALT-803 and the recommended phase 2 dose was 20 mcg/kg subcutaneously. Grade 3 adverse events, regardless of attribution to ALT-803, included transient hypertension (14%), anemia (5%), nausea (5%), chills (5%), fever (5%), neutropenia (5%), and hyperglycemia (5%).
“Patients who received [subcutaneous] ALT-803 developed a unique injection site rash reaction that peaked 7-10 days later but resolved typically within 14 days. It was self-limited and resolved on its own,” Dr. Fehniger said.
At the time of the presentation, the best overall response rate was achieved in 11 of 21 patients (52%), with 9 complete responders (43%), and 2 partial responders (10%).
Of the 12 patients treated with ALT-803 subcutaneously, 11 patients had either stable disease, or partial or complete responses. All 11 patients remained on study and were in consolidation or follow-up and have not relapsed, Dr. Fehniger reported.
Among the five rituximab-refractory patients, the researchers observed one complete response, two patients with stable disease (45% and 36% tumor volume decrease), and two patients with partial disease. The durability of the responses can only be understood with longer follow-up, Dr. Fehniger said.
The peripheral blood of the patients was analyzed via flow cytometry and mass cytometry. Over the duration of four weekly doses, there was an increase in percentage (sixfold, P less than .001) and absolute number (10-fold, P less than .001) of natural killer cells at the 15-mcg/kg and 20-mcg/kg subcutaneous dose levels of ALT-803.
These results suggest that further studies of ALT-803 with other therapeutic targeting mAbs, or other immunotherapy modalities, are warranted, the researchers concluded.
Dr. Fehniger reported research funding from Altor BioScience.
SOURCE: Fehniger TA et al. AACR Annual Meeting, Abstract CT146.
CHICAGO – A combination of an immunostimulatory IL-15-based agent, ALT-803, with a therapeutic monoclonal antibody (mAb) against CD20, was well tolerated and had clinical activity in patients with indolent non-Hodgkin lymphoma (iNHL), according to preliminary findings from a phase 1 study.
“The cancer immunotherapy breakthrough that happened several years ago continues year after year, with a plethora of different modalities of immunotherapy at our disposal,” Todd A. Fehniger, MD, PhD, said at the annual meeting of the American Association for Cancer Research.
Immunotherapy with anti-CD20 mAbs, alone or in combination with chemotherapy, is a standard therapy for iNHL patients. Since iNHL cells express CD20, targeting it with mAbs triggers antitumor responses via cell surface receptors resulting in a potent antibody-dependent cellular toxicity. However, response in patients is highly heterogeneous, with relapse within a few months in a subset of patients. In addition, chemotherapeutic combinations can be toxic and result in serious and long-term complications.
“Relapsed or refractory iNHL is not curable and treatment strategies without long-term complications are needed,” said Dr. Fehniger, associate professor of medicine at Washington University, St. Louis.
In an attempt to address this, Dr. Fehniger and his colleagues combined rituximab, an anti-CD20 antibody, with a relatively new IL-15 agonist immunostimulatory agent called ALT-803.
In the phase 1 trial, the researchers enrolled patients with indolent non-Hodgkin lymphoma who had relapsed after at least 1 prior to CD20 antibody containing therapy. The study was a standard 3+3 dose escalation design with rituximab administered by intravenous infusion, 375 mg/m2 in four weekly doses, followed by a rest and four consolidation doses every 8 weeks for four cycles.
ALT-803 was administered concurrently at dose levels of 1 mcg/kg, 3 mcg/kg, and 6 mcg/kg IV followed by 6 mcg/kg, 10 mcg/kg, 15 mcg/kg, and 20 mcg/kg subcutaneously.
In total, 21 patients were treated: 16 patients had follicular lymphoma, four patients had marginal zone lymphoma, and one patient had small lymphocytic lymphoma. The median prior therapies received was two (range: 1-18) and five patients were treated who were refractory to prior anti-CD20 MAb therapy.
ALT-803 was well tolerated with no dose limiting toxicities or grade 4 or 5 adverse events. No patients discontinued ALT-803 and the recommended phase 2 dose was 20 mcg/kg subcutaneously. Grade 3 adverse events, regardless of attribution to ALT-803, included transient hypertension (14%), anemia (5%), nausea (5%), chills (5%), fever (5%), neutropenia (5%), and hyperglycemia (5%).
“Patients who received [subcutaneous] ALT-803 developed a unique injection site rash reaction that peaked 7-10 days later but resolved typically within 14 days. It was self-limited and resolved on its own,” Dr. Fehniger said.
At the time of the presentation, the best overall response rate was achieved in 11 of 21 patients (52%), with 9 complete responders (43%), and 2 partial responders (10%).
Of the 12 patients treated with ALT-803 subcutaneously, 11 patients had either stable disease, or partial or complete responses. All 11 patients remained on study and were in consolidation or follow-up and have not relapsed, Dr. Fehniger reported.
Among the five rituximab-refractory patients, the researchers observed one complete response, two patients with stable disease (45% and 36% tumor volume decrease), and two patients with partial disease. The durability of the responses can only be understood with longer follow-up, Dr. Fehniger said.
The peripheral blood of the patients was analyzed via flow cytometry and mass cytometry. Over the duration of four weekly doses, there was an increase in percentage (sixfold, P less than .001) and absolute number (10-fold, P less than .001) of natural killer cells at the 15-mcg/kg and 20-mcg/kg subcutaneous dose levels of ALT-803.
These results suggest that further studies of ALT-803 with other therapeutic targeting mAbs, or other immunotherapy modalities, are warranted, the researchers concluded.
Dr. Fehniger reported research funding from Altor BioScience.
SOURCE: Fehniger TA et al. AACR Annual Meeting, Abstract CT146.
REPORTING FROM THE AACR ANNUAL MEETING
Key clinical point:
Major finding: The ALT-803 plus rituximab combination achieved an overall response rate in 52% of patients, a complete response in 43%, and partial response in 10%.
Study details: A phase 1 study of 21 patients with indolent non-Hodgkin lymphoma.
Disclosures: Dr. Fehniger reported research funding from Altor BioScience LLC.
Source: Fehniger TA et al. AACR Annual Meeting, Abstract CT146.
Venetoclax shows muscle against CLL relapsed after idelalisib
For patients with relapsed or refractory chronic lymphocytic leukemia despite therapy with idelalisib (Zydelig), venetoclax (Venclexta) was associated with relatively high overall response and progression-free survival rates, results of a phase 2 study show.
Among 36 patients with relapsed/refractory CLL who had received idelalisib as their most recent B-cell receptor pathway inhibitor (BCRi), the overall response rate (ORR) was 67%, and median progression-free and overall survival (PFS and OS) had not been reached after 14 months of follow-up, reported Steven Coutre, MD, of Stanford (Calif.) University, and his colleagues.
“[V]enetoclax monotherapy is active and well-tolerated in patients with CLL progression after therapy with idelalisib, including a significant number of patients who also received prior therapy with ibrutinib [Imbruvica]. These results from the first prospective trial in this high-risk population provide evidence that venetoclax should be considered as a treatment option for such patients,” the investigators wrote. The report was published in Blood.
In clinical trials with idelalisib, approximately one-third of patients with CLL experienced disease progression on therapy, and other patients had to discontinue the drug, an inhibitor of the delta isoform of phosphoinositide 3-kinase (PI3K), because of toxicities, the investigators noted.
“The optimal treatment of patients with CLL progressing after idelalisib has not been well characterized,” they wrote. “Outcomes in patients who discontinued idelalisib treatment early are poor, with one retrospective analysis reporting a median overall survival (OS) after idelalisib discontinuation of approximately 2 months (range, 0-10 months).”
Venetoclax, an inhibitor of the apoptotic BCL-2 protein, has been shown to have activity against CLL, including in patients with high-risk features such as the chromosome 17p deletion (del17p), prompting the investigators to evaluate it as a follow-on in patients with relapsed/refractory CLL treated with a B-cell receptor pathway inhibitor.
They reported on the idelalisib cohort in a phase 2 trial in which patients with CLL that progressed on either idelalisib or ibrutinib were subsequently treated with venetoclax. The patients in this analysis included those treated with idelalisib in the main study cohort or an expansion cohort.
Patients were started on venetoclax 20 mg daily, followed by weekly dose escalations to a target of 400 mg daily by week 5, or to a maximum of 600 mg for patients who did not have a response by the week 12 assessment.
The overall response rate – the primary efficacy endpoint – was 67%. There were two complete remissions (CR) and one CR with incomplete bone marrow recovery. The remaining 21 patients with responses had partial responses.
At a median of 14 months of follow-up, neither median PFS, duration of response, or OS had been reached.
The investigator-estimated 12-month PFS rate was 79%.
The most common grade 3 or 4 adverse events were neutropenia in 50% of patients, thrombocytopenia in 25%, and anemia in 17%. There were no cases of clinical tumor lysis syndrome, which has been known to occur when venetoclax is initiated at full dose without a ramp-up.
The most common adverse events of any grade included neutropenia, diarrhea, upper respiratory tract infection, thrombocytopenia, nausea, fatigue, cough, rash, and anemia.
“The low number of CRs reported at the time of analysis may be a result of the follow-up time, particularly for patients in the expansion cohort, as other clinical studies with venetoclax report CR occurring after 1 year on therapy. Patients with prior ibrutinib exposure who had progressed on idelalisib as their most recent therapy before study entry had similar efficacy results,” the investigators wrote.
Genentech and AbbVie funded the study. Dr. Coutre is an advisory board member for both companies and others, and receives institutional funding from AbbVie and others. Multiple coauthors disclosed financial relationships with AbbVie, Genentech, or both, as well as other companies.
SOURCE: Coutre S et al. Blood. 2018;131(15):1704-11.
For patients with relapsed or refractory chronic lymphocytic leukemia despite therapy with idelalisib (Zydelig), venetoclax (Venclexta) was associated with relatively high overall response and progression-free survival rates, results of a phase 2 study show.
Among 36 patients with relapsed/refractory CLL who had received idelalisib as their most recent B-cell receptor pathway inhibitor (BCRi), the overall response rate (ORR) was 67%, and median progression-free and overall survival (PFS and OS) had not been reached after 14 months of follow-up, reported Steven Coutre, MD, of Stanford (Calif.) University, and his colleagues.
“[V]enetoclax monotherapy is active and well-tolerated in patients with CLL progression after therapy with idelalisib, including a significant number of patients who also received prior therapy with ibrutinib [Imbruvica]. These results from the first prospective trial in this high-risk population provide evidence that venetoclax should be considered as a treatment option for such patients,” the investigators wrote. The report was published in Blood.
In clinical trials with idelalisib, approximately one-third of patients with CLL experienced disease progression on therapy, and other patients had to discontinue the drug, an inhibitor of the delta isoform of phosphoinositide 3-kinase (PI3K), because of toxicities, the investigators noted.
“The optimal treatment of patients with CLL progressing after idelalisib has not been well characterized,” they wrote. “Outcomes in patients who discontinued idelalisib treatment early are poor, with one retrospective analysis reporting a median overall survival (OS) after idelalisib discontinuation of approximately 2 months (range, 0-10 months).”
Venetoclax, an inhibitor of the apoptotic BCL-2 protein, has been shown to have activity against CLL, including in patients with high-risk features such as the chromosome 17p deletion (del17p), prompting the investigators to evaluate it as a follow-on in patients with relapsed/refractory CLL treated with a B-cell receptor pathway inhibitor.
They reported on the idelalisib cohort in a phase 2 trial in which patients with CLL that progressed on either idelalisib or ibrutinib were subsequently treated with venetoclax. The patients in this analysis included those treated with idelalisib in the main study cohort or an expansion cohort.
Patients were started on venetoclax 20 mg daily, followed by weekly dose escalations to a target of 400 mg daily by week 5, or to a maximum of 600 mg for patients who did not have a response by the week 12 assessment.
The overall response rate – the primary efficacy endpoint – was 67%. There were two complete remissions (CR) and one CR with incomplete bone marrow recovery. The remaining 21 patients with responses had partial responses.
At a median of 14 months of follow-up, neither median PFS, duration of response, or OS had been reached.
The investigator-estimated 12-month PFS rate was 79%.
The most common grade 3 or 4 adverse events were neutropenia in 50% of patients, thrombocytopenia in 25%, and anemia in 17%. There were no cases of clinical tumor lysis syndrome, which has been known to occur when venetoclax is initiated at full dose without a ramp-up.
The most common adverse events of any grade included neutropenia, diarrhea, upper respiratory tract infection, thrombocytopenia, nausea, fatigue, cough, rash, and anemia.
“The low number of CRs reported at the time of analysis may be a result of the follow-up time, particularly for patients in the expansion cohort, as other clinical studies with venetoclax report CR occurring after 1 year on therapy. Patients with prior ibrutinib exposure who had progressed on idelalisib as their most recent therapy before study entry had similar efficacy results,” the investigators wrote.
Genentech and AbbVie funded the study. Dr. Coutre is an advisory board member for both companies and others, and receives institutional funding from AbbVie and others. Multiple coauthors disclosed financial relationships with AbbVie, Genentech, or both, as well as other companies.
SOURCE: Coutre S et al. Blood. 2018;131(15):1704-11.
For patients with relapsed or refractory chronic lymphocytic leukemia despite therapy with idelalisib (Zydelig), venetoclax (Venclexta) was associated with relatively high overall response and progression-free survival rates, results of a phase 2 study show.
Among 36 patients with relapsed/refractory CLL who had received idelalisib as their most recent B-cell receptor pathway inhibitor (BCRi), the overall response rate (ORR) was 67%, and median progression-free and overall survival (PFS and OS) had not been reached after 14 months of follow-up, reported Steven Coutre, MD, of Stanford (Calif.) University, and his colleagues.
“[V]enetoclax monotherapy is active and well-tolerated in patients with CLL progression after therapy with idelalisib, including a significant number of patients who also received prior therapy with ibrutinib [Imbruvica]. These results from the first prospective trial in this high-risk population provide evidence that venetoclax should be considered as a treatment option for such patients,” the investigators wrote. The report was published in Blood.
In clinical trials with idelalisib, approximately one-third of patients with CLL experienced disease progression on therapy, and other patients had to discontinue the drug, an inhibitor of the delta isoform of phosphoinositide 3-kinase (PI3K), because of toxicities, the investigators noted.
“The optimal treatment of patients with CLL progressing after idelalisib has not been well characterized,” they wrote. “Outcomes in patients who discontinued idelalisib treatment early are poor, with one retrospective analysis reporting a median overall survival (OS) after idelalisib discontinuation of approximately 2 months (range, 0-10 months).”
Venetoclax, an inhibitor of the apoptotic BCL-2 protein, has been shown to have activity against CLL, including in patients with high-risk features such as the chromosome 17p deletion (del17p), prompting the investigators to evaluate it as a follow-on in patients with relapsed/refractory CLL treated with a B-cell receptor pathway inhibitor.
They reported on the idelalisib cohort in a phase 2 trial in which patients with CLL that progressed on either idelalisib or ibrutinib were subsequently treated with venetoclax. The patients in this analysis included those treated with idelalisib in the main study cohort or an expansion cohort.
Patients were started on venetoclax 20 mg daily, followed by weekly dose escalations to a target of 400 mg daily by week 5, or to a maximum of 600 mg for patients who did not have a response by the week 12 assessment.
The overall response rate – the primary efficacy endpoint – was 67%. There were two complete remissions (CR) and one CR with incomplete bone marrow recovery. The remaining 21 patients with responses had partial responses.
At a median of 14 months of follow-up, neither median PFS, duration of response, or OS had been reached.
The investigator-estimated 12-month PFS rate was 79%.
The most common grade 3 or 4 adverse events were neutropenia in 50% of patients, thrombocytopenia in 25%, and anemia in 17%. There were no cases of clinical tumor lysis syndrome, which has been known to occur when venetoclax is initiated at full dose without a ramp-up.
The most common adverse events of any grade included neutropenia, diarrhea, upper respiratory tract infection, thrombocytopenia, nausea, fatigue, cough, rash, and anemia.
“The low number of CRs reported at the time of analysis may be a result of the follow-up time, particularly for patients in the expansion cohort, as other clinical studies with venetoclax report CR occurring after 1 year on therapy. Patients with prior ibrutinib exposure who had progressed on idelalisib as their most recent therapy before study entry had similar efficacy results,” the investigators wrote.
Genentech and AbbVie funded the study. Dr. Coutre is an advisory board member for both companies and others, and receives institutional funding from AbbVie and others. Multiple coauthors disclosed financial relationships with AbbVie, Genentech, or both, as well as other companies.
SOURCE: Coutre S et al. Blood. 2018;131(15):1704-11.
FROM BLOOD
Key clinical point:
Major finding: The overall response rate was 67%, including two complete responses (CRs) and one CR with incomplete bone marrow recovery.
Study details: Cohort of 36 patients with relapsed/refractory CLL previously treated with idelalisib.
Disclosures: Genentech and AbbVie funded the study. Dr. Coutre is an advisory board member for both companies and others, and receives institutional funding from AbbVie and others. Multiple coauthors disclosed financial relationships with AbbVie, Genentech, or both, as well as other companies.
Source: Coutre S et al. Blood. 2018;131(15):1704-11.
FDA grants priority review of follicular lymphoma drug
by the Food and Drug Administration.
The biopharmaceutical company Verastem is seeking full approval for duvelisib for the treatment of relapsed/refractory chronic lymphocytic leukemia/small lymphocytic lymphoma (CLL/SLL) and accelerated approval for the treatment of relapsed/refractory follicular lymphoma. The FDA has set Oct. 5, 2018, as the target action date, according to Verastem.
by the Food and Drug Administration.
The biopharmaceutical company Verastem is seeking full approval for duvelisib for the treatment of relapsed/refractory chronic lymphocytic leukemia/small lymphocytic lymphoma (CLL/SLL) and accelerated approval for the treatment of relapsed/refractory follicular lymphoma. The FDA has set Oct. 5, 2018, as the target action date, according to Verastem.
by the Food and Drug Administration.
The biopharmaceutical company Verastem is seeking full approval for duvelisib for the treatment of relapsed/refractory chronic lymphocytic leukemia/small lymphocytic lymphoma (CLL/SLL) and accelerated approval for the treatment of relapsed/refractory follicular lymphoma. The FDA has set Oct. 5, 2018, as the target action date, according to Verastem.