Despite the improved outcomes associated with immunotherapy in SCLC, the overall clinical benefit remains modest. Further preclinical and clinical studies are essential to identify optimal treatment regimens and enhance therapeutic efficacy.

P1/2, N=90, Active, not recruiting, Hoffmann-La Roche | Recruiting --> Active, not recruiting

The study found that tarlatamab given every 2 weeks shrank SCLC in participants with SCLC who received previous treatments. Participants given the 10 mg tarlatamab dose had fewer side effects than those given the 100 mg tarlatamab dose.Clinical Trial Registration: NCT05740566 (DeLLphi-304) (ClinicalTrials.gov).

P1, N=54, Recruiting, Novartis Pharmaceuticals | Not yet recruiting --> Recruiting | Trial completion date: Nov 2027 --> Jul 2027 | Trial primary completion date: Nov 2027 --> Jul 2027

P1, N=154, Completed, Xencor, Inc. | Active, not recruiting --> Completed | N=270 --> 154 | Trial completion date: Jan 2025 --> Apr 2024 | Trial primary completion date: Oct 2024 --> Apr 2024

Six weeks later, while receiving the CD20-directed immunotherapies glofitamab and obinutuzumab, another bone marrow biopsy revealed eradication of the B-ALL and new involvement by pure erythroid leukemia (PEL). This patient's B-ALL lacked an IGH::BCL2 fusion resulting from t(14; 18), suggesting it did not arise through transformation of his prior FL/DLBCL. Instead, the B-ALL was likely caused by his extensive exposure to genotoxic chemotherapy drugs – including alkylating agents – for his preceding lymphomas. The shared cytogenetic and molecular features between this patient's B-ALL and PEL imply they are clonally related.

P2, N=40, Recruiting, The First Affiliated Hospital of Soochow University

P2/3, N=210, Recruiting, University of Birmingham | Active, not recruiting --> Recruiting

P2, N=125, Recruiting, Institut für Klinische Krebsforschung IKF GmbH at Krankenhaus Nordwest | Active, not recruiting --> Recruiting | N=80 --> 125 | Trial primary completion date: Sep 2027 --> Apr 2025

P1, N=40, Recruiting, IGM Biosciences, Inc. | N=24 --> 40 | Trial completion date: Jul 2025 --> May 2026 | Trial primary completion date: Feb 2025 --> May 2025

P1, N=30, Not yet recruiting, National Heart, Lung, and Blood Institute (NHLBI)

Currently, two BCMA-targeting BsAbs (teclistamab and elranatamab) and one GPRC5D-targeting BsAb (talquetamab) have regulatory approval for the treatment of patients (pts) with RRMM. CMMC counts through serial peripheral blood sampling can be used to assess disease burden and early kinetics of response to BsAb therapy. Further follow-up and additional cohorts are planned to confirm performance of this assay as a biomarker in predicting response and long-term outcomes in patients receiving BsAb and other therapies, as well as interrogating mechanisms of resistance through targeted sequencing and analysis of tumor-associated antigens of enumerated cells.

All pts received obinutuzumab pretreatment (1000mg or 2000mg) on Cycle (C) 1 Day (D) 1. Glofitamab induces high response rates in pts with heavily pretreated R/R MCL, including those who have clinical and/or histological features associated with poor prognosis. Clinical and molecular remissions are achieved early in the course of treatment, with durable responses lasting beyond the length of the treatment.

B-cell maturation antigen (BCMA)-targeting bispecific T-cell engagers (BiTEs), Teclistimab and Elranatamab have shown rapid and durable responses in RRMM with a lower incidence and severity of cytokine release syndrome (CRS) compared to chimeric antigen receptor T-cell therapies...CRS occurred within 24 hours of the first priming dose, lasted two days, and resolved with IV fluids, tocilizumab, and dexamethasone without recurrence... In this case series of heavily pre-treated Daratumumab relapsed/ refractory AL amyloidosis patients with advanced cardiac involvement, Elranatamab elicited rapid and deep hematological responses with all patients achieving a hematological complete response with deep suppression of iFLC within two weeks of treatment initiation, including MRD negative disease and cardiac responses in all tested patients after 3-5 cycles. Elranatamab was well-tolerated with no added toxicity and acceptable safety profile. These data support Elranatamab’s use in relapsed/refractory AL amyloidosis and prospective studies using BCMA-targeting BiTEs in this high-risk, high-need population.

With over 3 years of follow-up, single-agent epcoritamab demonstrated deep and durable responses and manageable side effects in CAR T–naive pts with R/R LBCL, as demonstrated by this subgroup analysis. Results were consistent with those seen in the overall EPCORE NHL-1 LBCL population, considering differences in baseline characteristics, and show that epcoritamab can be administered safely and effectively before or after CAR T for the treatment of R/R LBCL.

With a 3-year follow-up, epcoritamab continued to show deep and durable responses, with more than half of complete responders remaining in remission at 3 years: median duration of CR, 36.1 mo. Sustained MRD negativity was observed. Long-term safety was consistent with prior reports.

"Introduction: Brexucabtagene autoleucel (brexu cel) is a CD19-targeted chimeric antigen receptor (CAR) T cell therapy approved for the treatment of adults with relapsed/refractory (R/R) acute lymphoblastic leukemia (ALL)...No differences were observed with respect to sex, TP53 mutation status, prior inotuzumab (ino) or blinatumomab (blina) exposure, disease burden prior to CAR, or development of any cytokine release syndrome (CRS) or any neurotoxicity with brexu cel... In a large real-world cohort of adults with R/R B-ALL infused with brexu cel, we identified practice variation regarding the use of consolidative HCT. Among brexu cel recipients who entered an MRD- CR, we identified ClonoSeq NGS MRD negativity as a novel predictive factor of favorable oncologic outcomes, even without a consolidative HCT. Similar results have been obtained in pediatric ALL patietns ftreated with 41BB-based tisagenleucleucel (Pulsipher et al., Blood Cancer Discovery 2022)."

In this study, we infused allogeneic donor lymphocytes from haploidentical donors to patients with acute lymphoblastic leukemia who were receiving blinatumomab concurrently. Dose escalation of the T cell dose of the infused product was performed, while we monitored for unwanted effects from the T cell infusion. Starting doses were very small, 10e6 CD3+ cells/kg of recipient body weight, final doses were 100-fold larger, 10e8 CD3+/kg.

Because of the above, further research is needed to explore whether using upfront immunotherapy like inotuzumab ozogamicin or blinatumomab in the upfront setting, as well as administering allogeneic transplant early in the treatment course of muTP53-ALL would decrease the risk of relapse and improve long-term survival. The muTP53-ALL patients had similar CCR to first-line therapy to wtTP53-ALL. However, they had worse OS, likely because of relapses. The findings highlight the significant impact of TP53 mutation on outcomes in ALL.

Blinatumomab was not used during consolidation therapy in the reported patients. Its incorporation in the routine therapy of newly diagnosed patients may increase the proportion of patients receiving AHCT in a MRD negative state and further improve outcomes in this historically poor risk patient population.

Non-responders to blinatumomab have poor outcomes (2-year RFS: 25%) but may be salvaged by ASCT. The relatively low rate of NGS MRD negativity with blinatumomab monotherapy (31% in Ph- B-ALL) highlights the need for combination therapies in B-ALL.

Samples derived from cases from both the experimental and the control arm, based respectively on ponatinib followed by blinatumomab and on a combination of imatinib and conventional chemotherapy. While some groups reported a higher predictive prognostic power of IG/TR monitoring, our findings do not confirm these data, also in view of the very low rate of relapses so far observed. Nevertheless, a double-hit strategy may be informative for MRD monitoring and possibly for the distinction between typical/lymphoid Ph+ ALL vs multilineage/CML-like Ph+ ALL.

This study involved adult patients aged 19 or older with B-ALL, treated with modified hyper-CVAD (hyperfractionated cyclophosphamide, vincristine, doxorubicin, and dexamethasone) and allogeneic hematopoietic stem cell transplant (allogeneic-HSCT) at Catholic Hematology Hospital from May 2022 to June 2024...Poor MRD response was defined as > 0.1%, and complete MRD response as < 0.001%, and poor MRD responders were treated with MRD-directed therapy using blinatumomab or next-generation tyrosine kinase inhibitors... Our data suggested all MRD detection methods showed acceptable power and good concordance rates, but the detection power was different between Ph-positive and Ph-negative ALL. We also suggested MRD-directed therapeutic strategies might predict the significant time point of MRD for the prediction of survival outcomes.

Tal-DP exhibits a deep, long-term impact on efficacy through complementary mechanisms of action and may be especially beneficial in pts with prior BsAb exposure, who typically have unfavorable BL immune profiles. Ongoing analyses of tec-DP from MajesTEC-2 (NCT04722146) will be presented.

Median prior lines of therapy was 3 (range 2–12), 18 (38%) pts received prior lenalidomide–based therapy, 7 (15%) pts received prior chimeric antigen receptor T-cell therapy (CAR-T), and 4 (9%) received prior CD20 TCE therapy. AZD0486 offers high response rates in pts with R/R FL at target doses ≥2.4 mg. Responses were durable. 2SUD allows safe administration of the target dose up to at least 15 mg.

P1 | "Pts with CRS were managed with tocilizumab (47.4%), steroids (21.1%), or both agents (10.5%). Cevostamab demonstrates clinically meaningful activity and manageable safety at the 160mg TD level in pts with heavily pretreated RRMM. C1 TS dosing provides effective CRS mitigation. Cevostamab combination studies may use the 0.3/1.2/3.6mg TS regimen and the Q3W 160mg TD (or similar TD exposure)."

For patients (pts) with R/R FL, rituximab + lenalidomide (R2) is an approved and widely accepted regimen based on results from the AUGMENT trial (overall response rate [ORR], 78%; complete response [CR] rate, 34%; estimated 2-y progression-free survival [PFS], 58%). With more than 2 y of follow-up, fixed-duration epcoritamab + R2 continued to show deep and durable responses (CR rate, 87%; estimated 24-mo DOCR, 75%) in pts with R/R FL, irrespective of high-risk features. Considering limitations of cross-trial comparisons, these results (estimated 2-y PFS, 70%) compare favorably with those reported for R2 alone in the AUGMENT trial (estimated 2-y PFS, 58%). The depth of responses was underscored by MRD negativity in 88% of evaluable pts.

Frontline therapy was hyper-CVAD-based ± immunotherapy (e.g. inotuzumab ozogamicin and/or blinatumomab) in 43% (n=69), mini-hyper-CVD-based ± immunotherapy in 28% (n=45), and chemotherapy-free in 29% (n=47, all of whom were Ph+). Early achievement of NGS MRD negativity identifies pts with excellent outcomes after frontline therapy. Importantly, no relapses were observed in pts with HR cytogenetic/molecular features who achieved early NGS MRD negativity, suggesting that early MRD dynamics should be included in ALL risk stratification systems. Pts with HR Ph- ALL who achieve deep MRD negativity within the first 6 months of frontline therapy do not appear to benefit from allogeneic SCT.

Ten (77%) pts received blinatumomab as part of initial therapy...Among pts who completed the DLT period (n=11), 7 (64%) experienced transient grade (G) 1 cytokine release syndrome (CRS) that resolved with tocilizumab +/- corticosteroid... The use of CAR-T in older adults with B-ALL in CR1 appears safe with no observed ICANS or ≥G2 CRS. CAR T cells had a robust expansion in the blood and CSF despite the low antigen setting. We have observed preliminary durable remissions and pts maintained function and cognition on day 100 post CAR-T.

P2, N=184, Recruiting, Genmab | Trial primary completion date: Aug 2027 --> May 2029

P1, N=15, Recruiting, Genmab | Trial primary completion date: Nov 2028 --> Jun 2027

P2, N=622, Recruiting, Genmab | Trial completion date: Jun 2031 --> Nov 2032 | Trial primary completion date: Jun 2031 --> Nov 2032

P1, N=26, Not yet recruiting, Timothy Voorhees

P2, N=30, Not yet recruiting, M.D. Anderson Cancer Center

P1/2, N=186, Not yet recruiting, Regeneron Pharmaceuticals

P2, N=300, Recruiting, Multiple Myeloma Research Consortium | Not yet recruiting --> Recruiting | Initiation date: Jul 2024 --> Nov 2024

P2, N=42, Active, not recruiting, University of Washington | Recruiting --> Active, not recruiting | Trial completion date: Dec 2025 --> Mar 2025 | Trial primary completion date: Dec 2025 --> Mar 2025

P1, N=55, Recruiting, Boehringer Ingelheim | Trial completion date: Dec 2025 --> Aug 2026 | Trial primary completion date: Nov 2025 --> Jul 2026

Forimtamig is currently being evaluated in Phase 1 clinical trials in relapsed and refractory myeloma (RRMM) patients for monotherapy and in combination treatments. NCT04557150.

P2, N=300, Suspended, National Cancer Institute (NCI) | N=550 --> 300

P2, N=80, Not yet recruiting, Navy General Hospital, Beijing

This report presents two pediatric ALL cases (one Ph+ and one Ph-like) with minimal residual disease negativity established by multicolor flow cytometry but persistent transcript detection by quantitative PCR (qPCR) even after second-line treatment with tyrosine kinase inhibitors combined with blinatumomab immunotherapy. Using droplet digital PCR, BCR::ABL1 or TPM3::PDGFRB transcripts were identified in CD19+ cells as well as in non-CD19+ cells, suggesting the presence of a Ph+ or Ph-like ALL-M subtype originating from hematopoietic stem cells. This report provides information for better characterization, diagnosis, and treatment of these ALL subtypes.