Safety and Efficacy of BCMA directed Chimeric Antigen Receptor T-Cell Therapy for the Treatment of Plasma Cell Leukemia.

Despite significant therapeutic advances in multiple myeloma (MM), outcomes in patients with plasma cell leukemia (PCL) remain dismal. We conducted a multicenter retrospective analysis of patients with PCL treated with the B-cell Maturation Antigen (BCMA)-directed Chimeric Antigen Receptor T-Cell (CAR-T) products idecabtagene vicleucel (ide-cel) and ciltacabtagene autoleucel (cilta-cel). We identified 34 patients, 19 patients received ide-cel and 15 received cilta-cel.

Real-World Experience with Teclistamab for Relapsed/Refractory Multiple Myeloma from the US Myeloma Immunotherapy Consortium.

Unlabelled: Teclistamab is an anti-CD3-/B-cell maturation antigen (BCMA) bispecific antibody approved for use in relapsed/refractory multiple myeloma. We undertook a retrospective study of postapproval, real-world outcomes with teclistamab in the US Multiple Myeloma Immunotherapy Consortium. Among 509 patients, 89% would have been ineligible for the MajesTEC-1 trial, primarily due to prior BCMA-directed therapy, cytopenias, or diminished performance status.

Real-World Experience with Teclistamab for Relapsed/ Refractory Multiple Myeloma from the U.S. Myeloma Immunotherapy Consortium.

Teclistamab is an anti-CD3xBCMA bispecific antibody approved for use in relapsed/refractory multiple myeloma (MM). We undertook a retrospective study of post-approval, real-world outcomes with teclistamab in the U.S.

Plasma Proteomic Profiles Among White and African American Individuals With Monoclonal Gammopathy of Unknown Significance (MGUS) and Multiple Myeloma (MM).

Background: Compared to Non-Hispanic Whites, African American (AA) individuals have a 2-fold higher incidence of MGUS and MM. Understanding the molecular mechanisms that drive progression from MGUS to MM is crucial, but few studies have explored whether there are differences in protein expression patterns in the progression of MGUS to MM by race. Here, we used mass-spectrometry to compare proteomic profiles between AA and White individuals with MGUS and MM.

Outcomes of teclistamab in patients with relapsed/refractory multiple myeloma with prior exposure to BCMA-directed therapy: a multicenter study from the U.S. Multiple Myeloma Immunotherapy Consortium.

Data describing outcomes of teclistamab in multiple myeloma patients with prior exposure to BCMA-directed therapy (BCMA-DT) are limited. The goal of this multicenter retrospective analysis was to report the efficacy and safety of standard-of-care teclistamab in patients with prior BCMA-DT. A total of 385 patients were included, of whom 193 (50%) had received prior BCMA-DT, including 47 (24%) patients with prior antibody-drug conjugate (ADC)-only, 99 (51%) with chimeric antigen receptor T-cell therapy (CAR T)-only, 36 (19%) with both ADC and CAR T, 6 (3%) with bispecific antibody-only, and 5 (3%) with other combinations.

Global Access to Multiple Myeloma Therapies.

Purpose: Initial reports indicate that access to contemporary therapies currently used in North America for the treatment of multiple myeloma (MM) varies internationally. No studies have quantitatively reported the extent of disparities in the access to MM therapies worldwide, with a goal to investigate access to MM therapies and barriers globally.

Methods: From June 18 to July 15, 2023, an electronic survey was distributed to 176 oncologists treating MM outside the United States.

Stem Cell Mobilization Yields with Daratumumab (Dara) and Lenalidomide (Len)-Containing Quadruplet Induction Therapy in Patients with Newly Diagnosed Multiple Myeloma (NDMM): A Real-World Experience at 2 Institutes.

Background: Quadruplet therapy has become standard frontline therapy in transplant eligible NDMM patients. Using data from the MASTER and GRIFFIN trials, Chhabra et al. reported that Dara-Len containing quadruplet therapies had minimal impact on stem cell harvesting and engraftment.

A phase 2 randomized study of modakafusp alfa as a single agent for patients with relapsed/refractory multiple myeloma.

Modakafusp alfa is a first-in-class immunocytokine-directing interferon alfa to CD38+ cells. Our previous phase 1/2 trial identified 2 potential phase 2 doses of modakafusp alfa for patients with relapsed/refractory multiple myeloma (RRMM): 1.5 or 3 mg/kg every 4 weeks.

Teclistamab for patients with heavily pretreated relapsed/refractory multiple myeloma and renal impairment.

Outcomes of bispecific antibodies in patients with renal impairment (RI) are not well characterized, given the exclusion of these patients from clinical trials. Herein, we evaluated patients with relapsed/refractory multiple myeloma and RI treated with standard-of-care teclistamab. RI was defined as creatinine clearance (CrCl) <40 mL/min.

Comparison of Standard-of-Care Idecabtagene Vicleucel and Ciltacabtagene Autoleucel in Relapsed/Refractory Multiple Myeloma.

Purpose: Idecabtagene vicleucel (ide-cel) and ciltacabtagene autoleucel (cilta-cel), two B-cell maturation antigen-directed chimeric antigen receptor (CAR) T-cell therapies have demonstrated remarkable efficacy in relapsed/refractory multiple myeloma (RRMM). We compare safety, efficacy, and survival among patients with RRMM treated with standard-of-care (SOC) ide-cel or cilta-cel.

Methods: Data were from a retrospective chart review of patients with RRMM leukapheresed by December 31, 2022, with the intent to receive SOC ide-cel or cilta-cel at 19 institutions.

Phase 1 clinical trial of B-Cell Maturation Antigen (BCMA) NEX-T® Chimeric Antigen Receptor (CAR) T cell therapy CC-98633/BMS-986354 in participants with triple-class exposed multiple myeloma.

BCMA-targeted CAR T-cells transformed the treatment of relapsed and refractory multiple myeloma (RRMM), yet improvements are needed in manufacturing, toxicity and efficacy. We conducted a phase 1 clinical trial of BMS-986354, an autologous BCMA CAR T manufactured using an optimized NEX-T® process, in participants with triple-class exposed, RRMM. The 65 participants had a median of 5 (range 3-13) prior regimens, 39% had cytogenetic high-risk, 91% triple-class refractory, and 43% extra-medullar disease.

Targeted interferon therapy with modakafusp alfa for relapsed or refractory multiple myeloma.

Interferon alfa has activity against multiple myeloma (MM). Modakafusp alfa is an immunocytokine comprising 2 attenuated interferon alfa-2b molecules and an anti-CD38 immunoglobulin G4 antibody, targeting delivery of interferon alfa to CD38-expressing (CD38+) immune and myeloma cells. This phase 1/2 trial enrolled patients with relapsed/refractory multiple myeloma with ≥3 prior lines of treatment and refractory to, or intolerant of, ≥1 proteasome inhibitor and ≥1 immunomodulatory drug.

MRD-driven phase 2 study of daratumumab, carfilzomib, lenalidomide, and dexamethasone in newly diagnosed multiple myeloma.

In newly diagnosed multiple myeloma (NDMM), measurable residual disease (MRD) status is prognostically important, but its role in treatment decisions remains unclear. In a phase 2 trial, we assessed daratumumab, carfilzomib, lenalidomide, and dexamethasone (Dara-KRd) induction followed by a next-generation sequencing-based MRD-adapted strategy. The primary outcome was complete response (CR) and stringent CR (≥CR) after induction.

Comparative Meta-Analysis of Triplet vs. Quadruplet Induction Regimens in Newly Diagnosed, Treatment Naïve, Multiple Myeloma.

The use of 4-drug induction regimens for treatment naïve newly diagnosed multiple myeloma (NDMM) is associated with improved depth of response and progression-free survival (PFS). However, head-to-head trials of 4-drug combinations are lacking, and instead, these regimens are typically compared to 3-drug backbones; limiting the ability to discern whether any additional benefit (or toxicity) is simply additive or represents a synergy (or interaction). We conducted a meta-analysis of phase 2 and phase 3 clinical trials that randomized treatment naïve NDMM patients to either a 4-drug or 3-drug induction regimen.

Absolute Lymphocyte Count and Outcomes of Multiple Myeloma Patients Treated with Idecabtagene Vicleucel: The US Myeloma Immunotherapy Consortium Real- World Experience.

Idecabtagene vicleucel (ide-cel) has shown impressive efficacy in relapsed/refractory multiple myeloma (RRMM). This study aimed to investigate the impact of absolute lymphocyte count (ALC) on the survival outcomes of RRMM patients treated with standard of care (SOC) ide-cel. Data were collected retrospectively from 11 institutions in the U.

TACTUM: Trends in Access to Cellular Therapies in Multiple Myeloma, Perspectives of Treating Versus Referring Physicians.

Chimeric antigen receptor T cell therapy (CAR-T) and bispecific T cell engagers (TCE) for multiple myeloma (MM) are readily available at many large US medical centers. However, many potentially eligible patients may not be referred to the specialized centers administering these therapies. Perspectives regarding potential barriers for MM cellular therapy from referring-center oncologists (ROs) versus treating-center oncologists (TOs) have not been reported previously.

Efficacy of Selinexor in Relapsed/Refractory Multiple Myeloma (RRMM) Patients with del17p and Other High-Risk Abnormalities (A Retrospective Single-Center Study).

Selinexor (Seli) is a first-in-class, oral selective inhibitor of the nuclear export protein, exportin-1 (XPO1). Seli exhibits its antitumor effect through the blockage of XPO1, which increases nuclear retention of tumor suppressor proteins (TSPs), including p53, thereby limiting the translation of oncogenes, triggering cell cycle arrest and the death of malignant cells. Multiple Myeloma (MM) patients with del17p are deficient in TP53 and have a particularly poor prognosis.