Publications by authors named "Amitkumar Mehta"

Article Synopsis
  • Patients with relapsed/refractory diffuse large B-cell lymphoma (DLBCL) have limited treatment options, prompting the investigation of magrolimab (M) combined with rituximab (R), and M combined with gemcitabine-oxaliplatin (M+R-GemOx) for long-term disease control.
  • In a study involving 132 patients, M+R achieved an objective response rate (ORR) of 24%, while M+R-GemOx showed a higher ORR of 52%, with notable complete response (CR) rates of 12% and 39%, respectively.
  • Both treatments were generally well tolerated, though common side effects included fatigue and anemia, with
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  • R/R indolent non-Hodgkin lymphoma (iNHL) is often deemed incurable, but a phase 1b/2 study found that combining magrolimab (an anti-CD47 antibody) with rituximab (an anti-CD20 antibody) shows promising antitumor effects.
  • In this study, 46 patients were treated and showed a 52.2% overall response rate, with 30.4% achieving a complete response and median duration of response at 15.9 months.
  • Long-term follow-up (median 36.7 months) revealed no new toxicities or treatment-related deaths, indicating the combination's long-term safety and effectiveness, encouraging further research into CD
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  • Parsaclisib is a selective inhibitor targeting PI3Kδ that has shown promise for patients with relapsed or refractory B-cell lymphomas, particularly marginal zone lymphoma (MZL).
  • The CITADEL-204 phase 2 study evaluated its efficacy and safety in patients who had prior treatment with BTK inhibitors and those who were treatment-naive, focusing on objective response rates (ORR) as the primary endpoint.
  • The study found a 58.3% ORR in the daily dosing group, with a median response duration of 12.2 months, although some patients experienced significant treatment-related side effects such as diarrhea and neutropenia, leading to dose modifications in a large number of cases.
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  • This study looks at patients with mantle cell lymphoma (MCL) to understand their different experiences and predict their outcomes better.
  • It involves a big group of hospitals in North America and looks at 586 MCL cases from 2000 to 2012 to find important patterns in treatment and results.
  • The researchers discovered that certain treatments and factors, like using stem cell transplants and checking for specific proteins, are really important to know how well patients will do over time.
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  • * The trial enrolled 120 patients, showing notable efficacy with an overall response rate of 59.2% and a complete response rate of 45.9% during the dose expansion phase.
  • * Although some patients experienced adverse effects like neutropenia and fatigue, the treatment demonstrated a favorable safety profile and promising outcomes for patients not eligible for transplants.
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Purpose: To report the primary analysis results from the mantle cell lymphoma (MCL) cohort of the phase I seamless design TRANSCEND NHL 001 (ClinicalTrials.gov identifier: NCT02631044) study.

Methods: Patients with relapsed/refractory (R/R) MCL after ≥two lines of previous therapy, including a Bruton tyrosine kinase inhibitor (BTKi), an alkylating agent, and a CD20-targeted agent, received lisocabtagene maraleucel (liso-cel) at a target dose level (DL) of 50 × 10 (DL1) or 100 × 10 (DL2) chimeric antigen receptor-positive T cells.

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  • Mantle cell lymphoma (MCL) varies in prognosis, with blastoid and pleomorphic variants generally having poorer outcomes.
  • A study involving 1029 MCL patients over 15 years focused on the characteristics and survival rates of those with these variants, finding a median progression-free survival (PFS) of 38 months and overall survival (OS) of 68 months.
  • Key factors influencing PFS included receiving autologous hematopoietic transplantation (auto-HCT) and MCL International Prognostic Index (MIPI) scores; however, auto-HCT did not improve OS, indicating its benefits are more related to managing the disease's progression rather than overall survival.
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Follicular lymphoma (FL) is the most common type of indolent non-Hodgkin lymphoma. Despite treatment advances that have improved outcomes for patients with relapsed or refractory (R/R) FL, many patients still die from progressive disease or treatment-related toxicities. In the phase Ib/II GO29365 study (clinicaltrials.

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Background: Parsaclisib is a potent and highly selective PI3Kδ inhibitor that has shown clinical benefit in patients with relapsed/refractory (R/R) B-cell malignancies. In this phase 2 study (CITADEL-205; NCT03235544, EudraCT 2017-003148-19), the efficacy and safety of parsaclisib was evaluated in patients with R/R mantle cell lymphoma (MCL).

Methods: Patients ≥18 years old with pathologically confirmed R/R MCL and prior treatment with 1-3 systemic therapies, with (cohort 1) or without (cohort 2) previous Bruton kinase inhibitor (BTKi) treatment, received oral parsaclisib 20 mg once-daily (QD) for 8 weeks, then either parsaclisib 20 mg once-weekly (weekly dosing group [WG]) or parsaclisib 2.

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Up to 40% of patients with diffuse large B-cell lymphoma (DLBCL) are refractory to or relapse after first-line therapy, highlighting the need for better treatments. Mosunetuzumab is a CD20 × CD3 bispecific antibody that engages and redirects T cells to eliminate malignant B cells. In this phase 2, open-label study (NCT03677141), 40 patients (52.

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Significant variations exist related to the end of induction practices in the management of Acute Promyelocytic Leukemia (APL). These variations include all-trans retinoic acid (ATRA)-arsenic trioxide (ATO) in fixed doses versus continuation until hematologic complete remission (CR) and performance versus omission of post-induction bone marrow biopsy to confirm morphological CR. A retrospective chart review was conducted of 61 patients (42 low/intermediate-risk and 19 high-risk) aged ≥ 18 years with newly diagnosed APL treated with fixed duration ATRA-ATO +/- cytoreduction at a tertiary medical center from December 2012 through March 2020.

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Background: SEA-CD40 is an investigational, non-fucosylated, humanized monoclonal IgG antibody that activates CD40, an immune-activating tumor necrosis factor receptor superfamily member. SEA-CD40 exhibits enhanced binding to activating FcγRIIIa, possibly enabling greater immune stimulation than other CD40 agonists. A first-in-human phase 1 trial was conducted to examine safety, pharmacokinetics, and pharmacodynamics of SEA-CD40 monotherapy in patients with advanced solid tumors and lymphoma.

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Background: Patients with chronic lymphocytic leukemia (CLL) have reduced seroconversion rates and lower binding antibody (Ab) and neutralizing antibody (NAb) titers than healthy individuals following Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) mRNA vaccination. Here, we dissected vaccine-mediated humoral and cellular responses to understand the mechanisms underlying CLL-induced immune dysfunction.

Methods And Findings: We performed a prospective observational study in SARS-CoV-2 infection-naïve CLL patients (n = 95) and healthy controls (n = 30) who were vaccinated between December 2020 and June 2021.

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Chronic lymphocytic leukemia (CLL) patients have lower seroconversion rates and antibody titers following SARS-CoV-2 vaccination, but the reasons for this diminished response are poorly understood. Here, we studied humoral and cellular responses in 95 CLL patients and 30 healthy controls after two BNT162b2 or mRNA-2173 mRNA immunizations. We found that 42% of CLL vaccinees developed SARS-CoV-2-specific binding and neutralizing antibodies (NAbs), while 32% had no response.

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Background: Disparities in cancer outcomes persist for underserved populations; one important aspect of this is limited access to promising early phase clinical trials. To address this, the National Cancer Institute-funded Create Access to Targeted Cancer Therapy for Underserved Populations (CATCH-UP.2020) was created.

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Background: Patients with Diffuse Large Bcell Lymphoma (DLBCL) with MYC and BCL2 and/or BCL6 gene rearrangements [double-hit lymphoma/triple-hit lymphoma (DHL/THL)] have poor prognosis in the relapsed/refractory setting.

Methods: We utilized a real-world deidentified database of DLBCL patients and report patterns of therapy utilization in relapsed/refractory DLBCL. We used log-rank test to compare real-world overall survival (rwOS) among DHL and non-DHL subgroups for CAR Tcell therapy or ASCT respectively, stratified for prior lines of therapy.

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Purpose: Primary Central Nervous System Lymphoma (PCNSL) is an aggressive tumor that is confined to the CNS. Although the provision of high-dose methotrexate (HD-MTX) has remarkably improved outcomes in PCNSL patients, the optimal treatment regimens and standard MTX dose for induction therapy have been largely controversial. Herein, we sought to explore the impact of adjuvant rituximab and different dosages of induction HD-MTX on survival outcomes of immunocompetent patients with PCNSL.

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The host immune response is a potent defense mechanism against cancer development and progression. To survive, cancer cells must develop mechanisms to evade the immune response. Based on this knowledge, a series of new therapies collectively referred to as immunotherapies have been developed and translated to the clinic for treating cancer patients.

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We evaluated the triplet regimen obinutuzumab-atezolizumab-lenalidomide (G-atezo-len) for patients with relapsed/refractory (R/R) follicular lymphoma (FL) in an open-label, multicenter phase Ib/II study (BO29562; NCT02631577). An initial 3 + 3 dose-escalation phase to define the recommended phase II dose of lenalidomide was followed by an expansion phase with G-atezo-len induction and maintenance. At final analysis, 38 patients (lenalidomide 15 mg, n = 4; 20 mg, n = 34) had completed the trial.

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The advent of chimeric antigen receptor T-cell (CAR T-cell) therapy has revolutionized the treatment paradigm of various hematologic malignancies. Ever since its first approval for treatment of acute lymphoblastic leukemia (ALL) in 2017, CAR T-cell therapy has been found to be efficacious in various other lymphoid malignancies, with recent approvals in diffuse large B-cell lymphoma (DLBCL) and mantle cell lymphoma (MCL). Although CAR T-cell therapeutics offer a novel immunotherapeutic approach to treat otherwise refractory malignancies, the plethora of studies/products and complexities in manufacturing and administration have led to several challenges for clinicians and the healthcare system as a whole.

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Background: Developing appropriate care models for patients diagnosed with non-Hodgkin lymphoma (NHL) >65y require examination of current healthcare utilization patterns and cost, but non-malignant condition-specific utilization and Medicare spending among older patients has not been characterized.

Methods: Using SEER-Medicare, 14,533 patients diagnosed with NHL at age > 65 between 2008 and 2015 and a comparable non-cancer cohort (n = 14,533) were identified. Hospitalizations and outpatient visits for 109 non-malignant conditions were grouped into ten categories, allowing condition-specific utilization and spending calculation from diagnosis to 5y, censoring at blood or marrow transplantation, 6mo prior to death or end (12/31/2016).

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Bruton tyrosine kinase (BTK) inhibitors have become an important therapy for untreated and previously treated patients with chronic lymphocytic leukemia (CLL). Despite improved outcomes, rare adverse events, such as invasive fungal infections, have been reported with the use of first-generation BTK inhibitors. Invasive fungal infections carry a high morbidity and mortality risk.

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We report, to the best of our best knowledge, the oldest individual to ever be diagnosed with Familial Hemophagocytic Lymphohistiocytosis (FHL) Type 2 from homozygous c.1349C>T (p.T450M) missense variants in the PRF1 gene.

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Article Synopsis
  • Parsaclisib is a new medicine tested for patients with a type of cancer called diffuse large B-cell lymphoma in a study called CITADEL-202.
  • The study included two groups: one with patients who hadn’t taken a certain type of cancer medicine before and another with patients who had.
  • Although the results showed that some patients responded to parsaclisib, the study didn't meet its goals for group A, but they are still looking at how it works with other treatments.
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