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1.
Blood ; 144(4): 402-407, 2024 Jul 25.
Artigo em Inglês | MEDLINE | ID: mdl-38728378

RESUMO

ABSTRACT: B-cell maturation antigen (BCMA)-targeting therapeutics have dramatically improved outcomes in relapsed/refractory multiple myeloma (RRMM). However, whether the mechanisms of resistance between these therapies are shared and how the identification of such mechanisms before therapy initiation could refine clinical decision-making remains undefined. We analyzed outcomes for 72 RRMM patients treated with teclistamab, a CD3 × BCMA bispecific antibody, 42% (30/72) of whom had prior BCMA-directed therapy exposure. Malignant plasma cell BCMA expression was present in all BCMA therapy-naïve patients. Prior therapy-mediated loss of plasma cell BCMA expression before teclistamab treatment, measured by immunohistochemistry, was observed in 3 patients, none of whom responded to teclistamab, and 1 of whom also did not respond to ciltacabtagene autoleucel. Whole exome sequencing of tumor DNA from 1 patient revealed biallelic loss of TNFRSF17 following treatment with belantamab mafodotin. Low-to-undetectable peripheral blood soluble BCMA levels correlated with the absence of BCMA expression by bone marrow plasma cells. Thus, although rare, loss of BCMA expression following TNFRSF17 gene deletions can occur following any BCMA-directed therapy and prevents response to subsequent anti-BCMA-directed treatments, underscoring the importance of verifying the presence of a target antigen.


Assuntos
Antígeno de Maturação de Linfócitos B , Resistencia a Medicamentos Antineoplásicos , Mieloma Múltiplo , Humanos , Mieloma Múltiplo/imunologia , Mieloma Múltiplo/tratamento farmacológico , Mieloma Múltiplo/genética , Mieloma Múltiplo/patologia , Mieloma Múltiplo/terapia , Antígeno de Maturação de Linfócitos B/genética , Antígeno de Maturação de Linfócitos B/imunologia , Masculino , Feminino , Pessoa de Meia-Idade , Anticorpos Biespecíficos/uso terapêutico , Idoso , Anticorpos Monoclonais Humanizados
2.
Am J Hematol ; 99(6): 1180-1183, 2024 06.
Artigo em Inglês | MEDLINE | ID: mdl-38526002
3.
Res Sq ; 2024 Feb 07.
Artigo em Inglês | MEDLINE | ID: mdl-38405866

RESUMO

B-cell-maturation-antigen (BCMA)-directed therapies are highly active for multiple myeloma, but infections are emerging as a major challenge. In this retrospective, single-center analysis we evaluated infectious complications after BCMA-targeted chimeric-antigen-receptor T-cell therapy (CAR-T), bispecific-antibodies (BsAb) and antibody-drug-conjugates (ADC). The primary endpoint was severe (grade ≥ 3) infection incidence. Amongst 256 patients, 92 received CAR-T, 55 BsAb and 109 ADC. The incidence of severe infections was higher with BsAb (40%) than CAR-T (26%) or ADC (8%), including grade 5 infections (7% vs 0% vs 0%, respectively). Comparing T-cell redirecting therapies, the incidence rate of severe infections was significantly lower with CAR-T compared to BsAb at 1-year (incidence-rate-ratio [IRR] = 0.43, 95%CI 0.25-0.76, P = 0.004). During periods of treatment-emergent hypogammaglobulinemia, BsAb recipients had higher infection rates (IRR:2.27, 1.31-3.98, P = 0.004) and time to severe infection (HR 2.04, 1.05-3.96, P = 0.036) than their CAR-T counterparts. During periods of non-neutropenia, CAR-T recipients had a lower risk (HR 0.44, 95%CI 0.21-0.93, P = 0.032) and incidence rate (IRR:0.32, 95% 0.17-0.59, P < 0.001) of severe infections than BsAb. In conclusion, we observed an overall higher and more persistent risk of severe infections with BsAb. Our results also suggest a higher infection risk during periods of hypogammaglobulinemia with BsAb, and with neutropenia in CAR-T recipients.

4.
Blood Adv ; 8(12): 3246-3253, 2024 Jun 25.
Artigo em Inglês | MEDLINE | ID: mdl-38621239

RESUMO

ABSTRACT: Outcomes for patients with relapsed/refractory multiple myeloma (R/RMM) have dramatically improved after the development and now growing utilization of B-cell maturation antigen-targeted chimeric antigen receptor (CAR) T-cell therapy and bispecific antibody (BsAb) therapy. However, health care utilization as a quality-of-life metric in these growing populations has not been thoroughly evaluated. We performed a retrospective cohort study evaluating the frequency and cause of unscheduled health care interactions (UHIs) among patients with R/RMM responding to B-cell maturation antigen-targeted BsAb and CAR T-cell therapies (N = 46). This included the analysis of remote UHIs including calls to physicians' offices and messages sent through an online patient portal. Our results showed that nearly all patients with R/RMM (89%) receiving these therapies required a UHI during the first 125 days of treatment, with a mean of 3.7 UHIs per patient. Patients with R/RMM responding to BsAbs were significantly more likely to remotely contact their physicians' offices (1.8-fold increase; P = .038) or visit an urgent care center (more than threefold increase; P = .012) than patients with R/RMM responding to CAR T-cell therapies. This was largely due to increased reports of mild upper respiratory tract infections in BsAb patients. Our results underscore the need to develop preemptive management strategies for commonly reported symptoms that patients with R/RMM experience while receiving CAR T-cell or BsAb therapies. This preemptive management may significantly reduce unnecessary health care utilization in this vulnerable patient population.


Assuntos
Imunoterapia Adotiva , Mieloma Múltiplo , Humanos , Mieloma Múltiplo/terapia , Masculino , Imunoterapia Adotiva/métodos , Pessoa de Meia-Idade , Feminino , Estudos Retrospectivos , Idoso , Anticorpos Biespecíficos/uso terapêutico , Adulto , Receptores de Antígenos Quiméricos/uso terapêutico , Qualidade de Vida
5.
Blood Cancer J ; 14(1): 88, 2024 May 31.
Artigo em Inglês | MEDLINE | ID: mdl-38821925

RESUMO

B-cell-maturation-antigen (BCMA)-directed therapies are highly active for multiple myeloma, but infections are emerging as a major challenge. In this retrospective, single-center analysis we evaluated infectious complications after BCMA-targeted chimeric-antigen-receptor T-cell therapy (CAR-T), bispecific-antibodies (BsAb) and antibody-drug-conjugates (ADC). The primary endpoint was severe (grade ≥3) infection incidence. Amongst 256 patients, 92 received CAR-T, 55 BsAb and 109 ADC. The incidence of severe infections was higher with BsAb (40%) than CAR-T (26%) or ADC (8%), including grade 5 infections (7% vs 0% vs 0%, respectively). Comparing T-cell redirecting therapies, the incidence rate of severe infections was significantly lower with CAR-T compared to BsAb at 1-year (incidence-rate-ratio [IRR] = 0.43, 95%CI 0.25-0.76, P = 0.004). During periods of treatment-emergent hypogammaglobulinemia, BsAb recipients had higher infection rates (IRR:2.27, 1.31-3.98, P = 0.004) and time to severe infection (HR 2.04, 1.05-3.96, P = 0.036) than their CAR-T counterparts. During periods of non-neutropenia, CAR-T recipients had a lower risk (HR 0.44, 95%CI 0.21-0.93, P = 0.032) and incidence rate (IRR:0.32, 95% 0.17-0.59, P < 0.001) of severe infections than BsAb. In conclusion, we observed an overall higher and more persistent risk of severe infections with BsAb. Our results also suggest a higher infection risk during periods of hypogammaglobulinemia with BsAb, and with neutropenia in CAR-T recipients.


Assuntos
Antígeno de Maturação de Linfócitos B , Imunoterapia Adotiva , Mieloma Múltiplo , Humanos , Mieloma Múltiplo/terapia , Antígeno de Maturação de Linfócitos B/imunologia , Masculino , Feminino , Pessoa de Meia-Idade , Idoso , Estudos Retrospectivos , Imunoterapia Adotiva/efeitos adversos , Adulto , Infecções/etiologia , Infecções/epidemiologia , Anticorpos Biespecíficos/uso terapêutico , Anticorpos Biespecíficos/efeitos adversos , Idoso de 80 Anos ou mais , Incidência , Imunoconjugados/uso terapêutico , Imunoconjugados/efeitos adversos
6.
Blood Adv ; 8(12): 3038-3044, 2024 Jun 25.
Artigo em Inglês | MEDLINE | ID: mdl-38598713

RESUMO

ABSTRACT: Teclistamab (Tec) is a first-in-class BCMA × CD3 bispecific T-cell engager antibody approved for treating multiple myeloma progressing after at least 4 lines of therapy. The objective of this study was to evaluate the rate of cytokine release syndrome (CRS) in patients who were treated with commercial Tec and had prior exposure to other T-cell redirection therapies. A retrospective chart review was performed to identify patients who completed the Tec step-up dosing phase between November 2022 and November 2023. Patients were divided into 2 cohorts based on prior exposure to T-cell redirection therapy (cohort 1: T-cell redirection therapy experienced; cohort 2: T-cell redirection therapy naïve). The primary objective was to compare the differences in the rates of CRS between the 2 cohorts. Univariate and multivariate logistic regression analyses were performed to assess the association between CRS rates with Tec and prior treatment with T-cell redirection therapy. A total of 72 patients were included in the analysis (27 in cohort 1 and 45 in cohort 2). The CRS rates were significantly lower in cohort 1 (37%, n = 10) compared with cohort 2 (80%, n = 36; P = .0004). Based on multivariate logistic regression analysis, patients without prior exposure to T-cell redirection therapy (cohort 2) had about a fourfold increase in the incidence of CRS (95% confidence interval, 1.40-14.90; P = .0002) with Tec. In our study, prior exposure to T-cell redirection therapy reduced the risk of CRS with Tec during the step-up dosing phase. This observation will allow for the optimization of CRS prophylactic strategies for Tec.


Assuntos
Síndrome da Liberação de Citocina , Mieloma Múltiplo , Linfócitos T , Humanos , Mieloma Múltiplo/terapia , Mieloma Múltiplo/tratamento farmacológico , Masculino , Feminino , Pessoa de Meia-Idade , Síndrome da Liberação de Citocina/etiologia , Linfócitos T/imunologia , Linfócitos T/metabolismo , Estudos Retrospectivos , Idoso , Anticorpos Biespecíficos/uso terapêutico , Antígeno de Maturação de Linfócitos B/antagonistas & inibidores
7.
Blood Adv ; 2024 Aug 16.
Artigo em Inglês | MEDLINE | ID: mdl-39158065

RESUMO

Artificial intelligence enabled interpretation of electrocardiogram waveform images (AI-ECG) can identify patterns predictive of future adverse cardiac events. We hypothesized such an approach, which is well described in general medical and surgical patients, would provide prognostic information with respect to the risk of cardiac complications and overall mortality in patients undergoing hematopoietic cell transplantation (HCT) for blood malignancy. We retrospectively subjected ECGs obtained pre-HCT to an externally trained, deep learning model designed to predict risk of atrial fibrillation (AF). Included were 1,377 patients (849 autologous HCT and 528 allogeneic HCT recipients). Median follow-up was 2.9 years. The three-year cumulative incidence of AF was 9% (95% CI: 7-12%) in autologous HCT patients and 13% (10-16%) in allogeneic HCT patients. In the entire cohort, pre-HCT AI-ECG estimate of AF risk correlated highly with development of clinical AF (Hazard Ratio (HR) 7.37, 3.53-15.4, p <0.001), inferior overall survival (HR: 2.4; 1.3-4.5, p = 0.004), and greater risk of non-relapse mortality (HR 3.36, 1.39-8.13, p = 0.007), without increased risk of relapse. Significant associations with mortality were only noted in allo HCT recipients, where the risk of non-relapse mortality was greater. Compared to calcineurin inhibitor-based graft versus host disease prophylaxis, the use of post-transplantation cyclophosphamide resulted in greater 90-day incidence of AF (13% versus 5%, p = 0.01), corresponding to temporal changes in AI-ECG AF prediction post HCT. In summary, AI-ECG can inform risk of post-transplant cardiac outcomes and survival in HCT patients and represents a novel strategy for personalized risk assessment after HCT.

8.
Blood Cancer J ; 14(1): 84, 2024 May 27.
Artigo em Inglês | MEDLINE | ID: mdl-38802346

RESUMO

Despite being the mainstay of management for cytokine release syndrome (CRS) and immune effector cell-associated neurotoxicity syndrome (ICANS), there is limited data regarding the impact of tocilizumab (TCZ) and corticosteroids (CCS) on chimeric antigen receptor (CAR) T-cell efficacy in multiple myeloma (MM). The present study aims to evaluate the prognostic impact of these immunosuppressants in recipients of BCMA- or GPRC5D-directed CAR T cells for relapsed/refractory MM. Our retrospective cohort involved patients treated with commercial or investigational autologous CAR T-cell products at a single institution from March 2017-March 2023. The primary endpoint was progression-free survival (PFS). Secondary endpoints included overall response rate (ORR), complete response rate (CRR), and overall survival (OS). In total, 101 patients (91% treated with anti-BCMA CAR T cells and 9% treated with anti-GPRC5D CAR T cells) were analyzed. Within 30 days post-infusion, 34% received CCS and 49% received TCZ for CRS/ICANS management. At a median follow-up of 27.4 months, no significant difference in PFS was observed between CCS and non-CCS groups (log-rank p = 0.35) or between TCZ and non-TCZ groups (log-rank p = 0.69). ORR, CRR, and OS were also comparable between evaluated groups. In our multivariable model, administering CCS with/without TCZ for CRS/ICANS management did not independently influence PFS (HR, 0.74; 95% CI, 0.36-1.51). These findings suggest that, among patients with relapsed/refractory MM, the timely and appropriate use of CCS or TCZ for mitigating immune-mediated toxicities does not appear to impact the antitumor activity and long-term outcomes of CAR T-cell therapy.


Assuntos
Corticosteroides , Anticorpos Monoclonais Humanizados , Imunoterapia Adotiva , Mieloma Múltiplo , Humanos , Mieloma Múltiplo/terapia , Mieloma Múltiplo/mortalidade , Masculino , Feminino , Pessoa de Meia-Idade , Anticorpos Monoclonais Humanizados/uso terapêutico , Idoso , Imunoterapia Adotiva/efeitos adversos , Imunoterapia Adotiva/métodos , Estudos Retrospectivos , Prognóstico , Corticosteroides/uso terapêutico , Adulto , Receptores de Antígenos Quiméricos/uso terapêutico , Idoso de 80 Anos ou mais
9.
Res Sq ; 2024 Jun 05.
Artigo em Inglês | MEDLINE | ID: mdl-38883739

RESUMO

Lenalidomide maintenance is associated with a significantly improved progression-free in patients with newly diagnosed multiple myeloma. Maintenance with lenalidomide is generally well tolerated; however, lenalidomide associated diarrhea is a common side effect and bile acid malabsorption has been suggested as an underlying mechanism. We conducted a single arm phase 2 trial of colesevelam, a bile acid binder, for lenalidomide-associated diarrhea in multiple myeloma. Patients were treated with colesevelam daily starting at 1250 mg (2 tablets 625 mg) for 12 weeks. The trial included 25 patients, 1 patient with grade 3 diarrhea, 14 with grade 2, and 10 with grade 1 diarrhea. All patients were on treatment with single agent lenalidomide maintenance and no patient progressed during the trial. Colesevelam treatment was highly effective for treatment of lenalidomide-associated diarrhea; 22 (88%) of the 25 patients responded where 17 patients (68%) had complete resolution of diarrhea, and 5 patients (20%) had improvement by 1 grade of diarrhea. The responses to colesevelam were seen within the first two weeks of treatment. These findings support the conclusion that lenalidomide-associated diarrhea is driven by bile acid malabsorption. Five patients reported mild gastrointestinal side effects including constipation. Importantly, the pharmacokinetics of lenalidomide were not affected by concomitant colesevelam treatment. The stool microbiome composition was not significantly different before and after colesevelam treatment. Patients reported improved diarrhea, fewer gastrointestinal symptoms, and less interference with their daily life after starting colesevelam. In summary, colesevelam was safe and highly effective for treatment of lenalidomide-associated diarrhea in multiple myeloma and does not reduce the clinical effect of lenalidomide.

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