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1.
Blood ; 138(SUPPL 1):3525, 2021.
Article in English | EMBASE | ID: covidwho-1770434

ABSTRACT

Background - The WINDOW-1 regimen introduced first-line ibrutinib with rituximab (IR) followed by 4 cycles of R-HCVAD for younger mantle cell lymphoma (MCL) patients (pts) demonstrating 90% CR on IR alone and we aimed to improve the CR rate with the addition of venetoclax. We therefore investigated the efficacy and safety of IR and venetoclax (IRV) followed by risk-stratified observation or short course R-HCVAD/MTX-ARA-C as consolidation in previously untreated young patients with mantle cell lymphoma (MCL). Our aim was to use a triplet chemotherapy-free induction to reduce the toxicity, complications and minimize chemotherapy exposure in MCL pts. Methods - We enrolled 50 previously untreated pts in this single institution, single arm, phase II clinical trial - NCT03710772. Pts received IR induction (Part-1) for initial 4 cycles. Pts were restaged at cycle 4 and received IRV for up to eight cycles (Cycle 5 to Cycle 12) starting with ramp up venetoclax dosing in Cycle 5. All pts who achieved CR prior to cycle 12 continued to receive IRV for 4 cycles (maximum 12 cycles) and then moved to part 2. Pts were stratified into three disease risk groups: high, moderate and low risk categories from the baseline data for assignment to R-HCVAD/MTX-ARA-C as consolidation in part 2 (4 cycles, 2 cycles, or no chemotherapy for high, medium and low risk pts respectively). Briefly, low risk pts were those with Ki-67 ≤30%, largest tumor mass <3 cm, low MIPI score and no features of high risk disease (Ki-67 ≥50%, mutations in the TP53, NSD2 or in NOTCH genes, complex karyotype or del17p, MYC positive, or largest tumor diameter >5 cm or blastoid/pleomorphic histology or if they remain in PR after 12 cycles of part 1. Medium risk are pts which did not belong to low or high-risk category. Those who experienced progression on part 1 went to part 2 and get 4 cycles of part 2. Patient were taken off protocol but not off study, if they remained in PR after 4 cycles of chemotherapy, these patients were followed up for time to next treatment and progression free survival on subsequent therapies. After part 2 consolidation, all pts received 2 years of IRV maintenance. The primary objective was to assess CR rates after IRV induction. Adverse events were coded as per CTCAE version 4. Molecular studies are being performed. Results - Among the 50 pts, the median age was 57 years (range - 35-65). There were 20 pts in high-risk group, 20 pts in intermediate-risk group and 10 pts in low-risk group. High Ki-67 (≥30%) in 18/50 (36%) pts. Eighteen (36%) had high and intermediate risk simplified MIPI scores. Six (12%) pts had aggressive MCL (blastoid/pleomorphic). Among the 24 TP53 evaluable pts, eight pts (33%) had TP53 aberrations (mutated and/or TP53 deletion by FISH). Forty-eight pts received IRV. Best response to IRV was 96% and CR of 92%. After part 2, the best ORR remained unaltered, 96% (92% CR and 4% PR). The median number of cycles of triplet IRV to reach best response was 8 cycles (range 2-12). Fifteen pts (30%) did not receive part 2 chemotherapy, two pts (4%) received 1 cycle, 16 pts (32%) 2 cycles and 13 pts (26%) got 4 cycles of chemotherapy. With a median follow up of 24 months, the median PFS and OS were not reached (2 year 92% and 90% respectively). The median PFS and OS was not reached and not significantly different in pts with high and low Ki-67% or with/without TP53 aberrations or among pts with low, medium or high-risk categories. The median PFS and OS was inferior in blastoid/pleomorphic MCL pts compared to classic MCL pts (p=0.01 and 0.03 respectively). Thirteen pts (26%) came off study - 5 for adverse events, 3 for on study deaths, and 2 for patient choice, 2 patients lost to follow up and one for disease progression. Overall, 5 pts died (3 on trial and 2 pts died off study, one due to progressive disease and another due to COVID pneumonia). Grade 3-4 toxicities on part 1 were 10% myelosuppression and 10% each with fatigue, myalgia and rashes and 3% mucositis. One pt developed grade 3 atrial flutter on part 1. None had grade 3-4 bleeding/bruising. Conclusions - Chemotherapy-free induction with IRV induced durable and deep responses in young MCL pts in the frontline setting. WINDOW-2 approach suggests that pts with low risk MCL do not need chemotherapy but further follow up is warranted. This combined modality treatment approach significantly improves outcomes of young MCL pts across all risk groups. Detailed molecular analyses will be reported. (Figure Presented).

2.
Blood ; 138:1460, 2021.
Article in English | EMBASE | ID: covidwho-1582437

ABSTRACT

Introduction: Non-Hodgkin lymphoma (NHL) constitutes ~40% of hematologic malignancies and, in 2020, resulted in 19,940 deaths in the USA. The most common NHL subtypes are diffuse large B-cell lymphoma (DLBCL), including primary mediastinal large B-cell lymphoma (PMBCL), and follicular lymphoma (FL). Although a majority of patients respond to standard-of-care therapy, many patients with NHL eventually relapse, highlighting the need for additional treatments. Real-world data regarding the safety and efficacy of emerging therapies in the relapsed/refractory (R/R) population, and the association between treatment patterns and patient outcomes, are limited. These data could provide unique insights to clinical and health-related quality of life (HRQoL) outcomes in patients with DLBCL, FL, or PMBCL treated with emerging therapies, especially novel options such as chimeric antigen receptor (CAR) T cell therapies. Methods: The Connect ® Lymphoma Disease Registry (NCT04982471) is a US-based, multicenter, prospective observational cohort study of patients with R/R NHL (DLBCL, FL, and PMBCL). Approximately 2100 patients ≥ 18 years of age from ~200 community oncology (~80%) or academic (~20%) sites will be enrolled over a ~3-year period. Patients with histologically confirmed NHL subtypes will be enrolled into 1 of 4 cohorts: first R/R DLBCL, second R/R DLBCL, first R/R FL, or first R/R PMBCL (Figure). Patients will be required to have begun second- (first R/R) or third- (second R/R) line systemic treatment within 60 days prior to enrollment. Patients receiving treatment for any active malignancy other than DLBCL, FL, or PMBCL at the time of enrollment, or who are diagnosed with any other malignancy in the 6 months prior to enrollment, will be excluded. All treatment and management decisions will be determined by the practicing clinicians. Patients may undergo hematopoietic stem cell transplantation, CAR T cell therapy, or other treatments at other sites while participating in this study. Patients will be followed from enrollment for up to 5 years or until death, withdrawal of consent, loss to follow-up, or study termination, whichever occurs first. Data collection will occur at enrollment (baseline) and then every ~3 months. The main objectives of the Connect ® Registry are to describe patient characteristics, practice patterns, and factors associated with treatment choice, sequencing, and effectiveness in NHL subtypes. Secondary objectives include describing treatment regimen safety, patient-reported outcomes (PROs) including HRQoL, and healthcare resource utilization outcomes. Exploratory objectives include tumor and blood biomarker evaluation and understanding the availability of social support and its impact on long-term treatment decision-making. Case report forms will be used to collect clinical and treatment data, including baseline demographics, clinical characteristics, treatment details and response, and socioeconomic factors. Outcome measures for efficacy will be progression-free survival, event-free survival, objective response rate, time to next treatment, and overall survival. The availability of social support will be assessed via a specific questionnaire administered at baseline. General (EQ-5D-5L) and disease-specific (FACT-Lym) questionnaires will also be administered. Patients may also optionally agree to release tumor biopsies and blood samples for biomarker analysis. Clinicians will be required to report serious adverse events (AEs), secondary primary malignancies, and confirmed COVID-19 infections within 24 hours. Non-serious AEs of interest include grade 1-3 cytokine release syndrome, grade 1-3 neurotoxicity, grade 3 colitis, grade 3 arrhythmia, grade 3 hemorrhage. Other AEs of interest to be collected include grade 3 hypogammaglobulinemia, prolonged grade 3 cytopenia, and grade 3 infections. Data collected in the Connect ® Registry will increase understanding of the association between emerging therapies and patient outcomes for R/R DLBCL, FL, and PMBCL. Study support: Bristol Myers Squibb [Formula presented] Disclosures: Flowers: Amgen: Research Funding;Janssen: Research Funding;Biopharma: Consultancy;Ziopharm: Research Funding;Burroughs Wellcome Fund: Research Funding;Nektar: Research Funding;Karyopharm: Consultancy;Iovance: Research Funding;Allogene: Research Funding;AbbVie: Consultancy, Research Funding;Cellectis: Research Funding;Pfizer: Research Funding;Sanofi: Research Funding;BeiGene: Consultancy;Kite: Research Funding;EMD: Research Funding;Genentech/Roche: Consultancy, Research Funding;Morphosys: Research Funding;Adaptimmune: Research Funding;Novartis: Research Funding;Epizyme, Inc.: Consultancy;Spectrum: Consultancy;Pharmacyclics/Janssen: Consultancy;Acerta: Research Funding;4D: Research Funding;Denovo: Consultancy;Celgene: Consultancy, Research Funding;Guardant: Research Funding;Genmab: Consultancy;Gilead: Consultancy, Research Funding;Bayer: Consultancy, Research Funding;SeaGen: Consultancy;Cancer Prevention and Research Institute of Texas: CPRIT Scholar in Cancer Research: Research Funding;Takeda: Research Funding;National Cancer Institute: Research Funding;TG Therapeutics: Research Funding;Eastern Cooperative Oncology Group: Research Funding;Xencor: Research Funding;Pharmacyclics: Research Funding. Andorsky: Celgene/Bristol Myers Squibb: Research Funding;AbbVie: Consultancy;Celgene/Bristol Myers Squibb: Consultancy;AstraZeneca: Other: served on steering committees;Epizyme: Research Funding;AbbVie: Research Funding. Burke: SeaGen: Consultancy, Speakers Bureau;X4 Pharmaceuticals: Consultancy;Bristol Myers Squibb: Consultancy;Verastem: Consultancy;AstraZeneca: Consultancy;MorphoSys: Consultancy;Adaptive Biotechnologies: Consultancy;Roche/Genentech: Consultancy;Epizyme: Consultancy;Kura: Consultancy;AbbVie: Consultancy;Beigene: Consultancy, Speakers Bureau;Kymera: Consultancy. Cerhan: Genentech: Research Funding;NanoString: Research Funding;Celgene/BMS: Other: Connect Lymphoma Scientific Steering Committee, Research Funding;Regeneron Genetics Center: Other: Research Collaboration. Grinblatt: Astellas Pharma, Inc.: Consultancy;Bristol Myers Squibb: Consultancy;Astra Zeneca: Consultancy;AbbVie: Consultancy. Toomey: Bristol Myers Squibb: Consultancy. Zelenetz: Gilead: Honoraria, Research Funding;Verastem: Honoraria;Novartis: Honoraria;MEI Pharma: Honoraria, Research Funding;SecuraBio: Honoraria;Abbvie: Honoraria, Research Funding;MorphoSys: Honoraria;Pharmacyclics: Honoraria;AstraZeneca: Honoraria;LFR: Other;Genentech/Roche: Honoraria, Research Funding;NCCN: Other;MethylGene: Research Funding;Beigene: Honoraria, Other, Research Funding;BMS/Celgene/JUNO: Honoraria, Other;Amgen: Honoraria;Gilead: Honoraria;Janssen: Honoraria. Sullivan: Bristol Myers Squibb: Current Employment, Current holder of individual stocks in a privately-held company. Flick: Bristol Myers Squibb: Current Employment. Kiselev: Bristol Myers Squibb: Current Employment, Current equity holder in publicly-traded company, Current holder of individual stocks in a privately-held company. Kaplan: Bristol Myers Squibb: Current Employment. Ahn: Bristol Myers Squibb: Current Employment.

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