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Biomedical subjects

Irene M Ghobrial

Publications and source records attributed to Irene M Ghobrial.

4 recordsLinked to original sources
PubMed2026

Teclistamab versus lenalidomide-dexamethasone in high-risk smoldering multiple myeloma: a randomized phase 2 trial.

Teclistamab, a B cell maturation antigen-targeting bispecific antibody, has demonstrated substantial activity in relapsed multiple myeloma (MM), particularly in earlier lines of therapy, and may have higher efficacy in high-risk smoldering MM (HR-SMM) with a more functional immune system. In the randomized phase 2 ImmunoPRISM trial, we compared fixed-duration teclistamab with lenalidomide-dexamethasone (Rd) in HR-SMM. After a six-patient safety run-in, patients were randomized 2:1 to teclistamab or Rd. The primary endpoint was complete response (CR) rate. As of 26 May 2026, 59 patients were treated-45 received teclistamab and 14 received Rd. Teclistamab treatment induced a CR in 77.8% patients versus 0% with Rd, and minimal residual disease negativity at 10-5 in 82.2% patients. At a median follow-up of 24.5 months, 2-year progression-free survival was 92% with teclistamab versus 49% with Rd. Overall, response rates, duration of response and time to progression (TTP) were significantly improved in teclistamab compared to Rd. Toxicities in the teclistamab arm included grades 1-2 cytokine release syndrome, no neurotoxicity and no increase in grade 3 infections compared to Rd (20% versus 21%). No deaths occurred in either arm. Teclistamab represents a highly active immune-interception strategy for HR-SMM. ClinicalTrials.gov registration: NCT05469893 .

Journal Article↗
PubMed2026

Evolution of tumor subclones and T-cell dynamics underlie variable ibrutinib responses in Waldenström macroglobulinemia.

To elucidate the molecular basis underlying differential responses and resistance to ibrutinib in Waldenström macroglobulinemia (WM), we conducted a prospective phase 2 trial of ibrutinib monotherapy in treatment-naïve patients. A total of 74 sequential bone marrow (BM) aspirates from 17 patients, collected from baseline through 48 treatment cycles, were profiled using single-cell multiomics. BM cells were segregated primarily into B-cell/plasma cell and T-cell compartments. Longitudinal clonal tracking of malignant B cells/plasma cells identified 3 distinct evolutionary patterns: evolution (early clone contraction with late clone expansion and increasing genomic complexity), devolution (early clone expansion with late clone contraction and genomic simplification), and no evolution (stable clonal architecture). The evolution pattern was strongly associated with disease progression, whereas devolution correlated with durable clinical response. Transcriptomic profiling of resistant clones enabled development and validation of the Waldenström ibrutinib prediction (WIP) score, which predicted treatment response at baseline. Within the WIP signature, LYN emerged as a key regulator; LYN knockdown or inhibition significantly increased WM cell sensitivity to ibrutinib, suggesting a rational combination strategy. In parallel, GZMB+ CD8+ effector-memory T cells expanded after treatment in patients with progressive disease and coexisted with tumor evolution. These cells exhibited persistently impaired cytotoxic programs (eg, GNLY), a dedifferentiated memory-like state, elevated PDCD1 expression, and reduced T-cell receptor diversity. Together, this study provides, to our knowledge, the first single-cell framework of tumor clonal evolution and T-cell dysfunction under ibrutinib in WM, introduces the WIP score as a predictive biomarker for treatment response, and identifies actionable tumor-intrinsic and immune mechanisms driving resistance. This trial was registered at www.ClinicalTrials.gov as NCT02604511.

Aged↗
PubMed2022

The International Consensus Classification of Mature Lymphoid Neoplasms: a report from the Clinical Advisory Committee.

Since the publication of the Revised European-American Classification of Lymphoid Neoplasms in 1994, subsequent updates of the classification of lymphoid neoplasms have been generated through iterative international efforts to achieve broad consensus among hematopathologists, geneticists, molecular scientists, and clinicians. Significant progress has recently been made in the characterization of malignancies of the immune system, with many new insights provided by genomic studies. They have led to this proposal. We have followed the same process that was successfully used for the third and fourth editions of the World Health Organization Classification of Hematologic Neoplasms. The definition, recommended studies, and criteria for the diagnosis of many entities have been extensively refined. Some categories considered provisional have now been upgraded to definite entities. Terminology for some diseases has been revised to adapt nomenclature to the current knowledge of their biology, but these modifications have been restricted to well-justified situations. Major findings from recent genomic studies have impacted the conceptual framework and diagnostic criteria for many disease entities. These changes will have an impact on optimal clinical management. The conclusions of this work are summarized in this report as the proposed International Consensus Classification of mature lymphoid, histiocytic, and dendritic cell tumors.

Advisory Committees↗