Latest news with #B-ALL
Medscape
6 days ago
- Health
- Medscape
Fast Five Quiz: B-Cell Acute Lymphoblastic Leukemia
Though more common in pediatric populations, B-cell acute lymphoblastic leukemia (B-ALL) affects both children and adults, and it has several genetic subtypes that significantly affect prognosis and treatment decisions. Despite advances in treatment protocols, resistance mechanisms remain a significant challenge. However, some genetic subtypes are associated with more favorable prognosis, and the nuances of this disease are evident in the cascading treatment algorithm recommended by the National Comprehensive Cancer Network (NCCN) for pediatric and adult cases. What do you know about B-ALL? Check your knowledge with this quick quiz. The treatment of B-ALL involves a complex and intensive series of steps. In the induction phase, glucocorticoids are typically used to reduce tumor burden by clearing leukemic cells from the bone marrow. However, point mutations in the NR3C1 gene generally cause resistance to glucocorticoid therapy, which can significantly affect prognosis. Mutations in the CREBBP gene also cause resistance to glucocorticoids DHFR , FPGS , and TYMS genes have been shown to generally cause resistance to methotrexate, not glucocorticoids. Learn more about corticosteroids in B-ALL. In risk stratification for B-ALL, the NCCN notes that having a white blood cell count of > 30 x 109/L is considered a high-risk feature. This is consistent with European guidelines. The NCCN also states that age over 35 years is another high-risk feature for B-ALL. ETP phenotype is a high-risk feature for T-cell acute lymphoblastic leukemia rather than the B-ALL subtype. Hyperdiploidy (a molecular subtype of B-ALL with 51-65 chromosomes) is considered standard risk by the NCCN; data have shown better prognosis for pediatric patients with this subtype. Learn more about risk stratification for B-ALL. TKIs are an important component of induction, consolidation, and maintenance treatment for Ph+ B-ALL. They are recommended by the NCCN for use in conjunction with other drugs, such as corticosteroids, blinatumomab, and inotuzumab ozogamicin (depending on treatment phase and disease severity) and as a treatment post-HCT. They recommend continuing TKI therapy for at least 2 years after HCT, although they note that the 'optimal duration' is unknown for this population. A recent review, however, notes that despite their success in patients with Ph+ B-ALL, approximately 25% of cases will develop resistance to TKIs. Given this possibility, the NCCN notes that clinicians should consider prior TKI intolerance, dose used, BCR::ABL1 mutations, and disease-related features when choosing a specific TKI; they specifically recommend bosutinib, dasatinib, imatinib, nilotinib, or ponatinib as options for TKI therapy. Learn more about Ph+ B-ALL treatments. The DUX4-rearranged subtype of B-ALL is considered to have a favorable prognosis in adolescents and young adults, compared with MEF2D-rearranged, CDX2/UBTF, and IDH1/2; these subtypes generally have inferior prognosis in the same populations (although MEF2D-rearranged has intermediate prognosis in adults). Specifically, DUX4-rearranged B-ALL has been associated with 93% event-free survival and overall survival in pediatric patients, and adolescent and young-adult patients also see longer disease-free survival after complete remission is achieved. Learn more about B-ALL genomics. Several genetic subtypes of B-ALL are associated with varying prognoses, and the outcomes differences seen between pediatric and adult patients can be partly explained by the different subtypes expressed by these populations. Further, new therapies have enabled high survival rates among pediatric patients with B-ALL, with long-term survival of up to 90% in this population. Prognosis for B-ALL in adolescents and adults is comparatively poor. For example, a population-based study reported the following declining survival rates with age: 74% for patients 15-19 years old, 59% for patients 20-39 years old, and 43% for those 40-59 years old. However, the researchers explained that these percentages still demonstrate improvements, as survival rates were overall lower in the 1980s and 1990s. Learn more about B-ALL prognosis.
Yahoo
31-03-2025
- Business
- Yahoo
IN8bio to Present New Preclinical Data on Novel Gamma-Delta (γδ) T cell Engager Platform for Cancer Immunotherapy at AACR Annual Meeting 2025
NEW YORK, March 31, 2025 (GLOBE NEWSWIRE) -- IN8bio, Inc. (Nasdaq: INAB), a clinical-stage biopharmaceutical company developing innovative gamma-delta T cell therapies for cancer and autoimmune diseases, announced today a poster presentation on its potentially breakthrough next generation γδ T cell-based T cell engager (TCE) platform at the American Association for Cancer Research (AACR) Annual Meeting 2025, taking place April 25-30, 2025 in Chicago, IL. 'T cell engagers are an exciting area of immunotherapy that remains in the early innings of development. We believe gamma-delta T cells offer unique properties, including tissue residence, phagocytosis and low IL-6 secretion, representing a powerful modality with the potential to overcome the limitations of current CD-3 based engager therapies,' said William Ho, CEO, and co-founder of IN8bio. Our novel gamma-delta T cell engager platform, presented for the first time at AACR 2025, demonstrates how we can combine the innate tumor-recognition capabilities of gamma-delta T cells with the capacity for significant cell expansion and the specificity of bispecific engagers to drive a potent, targeted immune response against multiple target antigens. These early findings in AML and B-ALL support our broader strategy to harness the unique biology of these cells across a range of cancers.' AACR Poster Presentation Details Poster Title: A novel gamma-delta T cell engager platform for cancer immunotherapy Abstract Presentation Number: 7321 (Poster Board 7) Session Title: Immunology/T Cell Engagers and Novel Antibody-Based Therapies Session Date and Time: Wednesday, April 30, 2025, 9:00 AM – 12:00 PM CT For more details visit: About IN8bio IN8bio is a clinical-stage biopharmaceutical company developing gamma-delta T cell-based immunotherapies for cancer and autoimmune diseases. Gamma-delta T cells are a specialized population of T cells that possess unique properties, including the ability to differentiate between healthy and diseased tissue. The company's lead program, INB-100, is focused on acute myeloid leukemia evaluating haplo-matched allogeneic gamma-delta T cells given to patients following a hematopoietic stem cell transplant. The company is also evaluating autologous DeltEx DRI gamma-delta T cells, in combination with standard of care, for glioblastoma, and advancing novel gamma-delta T cell engagers for potential oncology and autoimmune indications. For more information about IN8bio, visit Contacts:IN8bio, McCall646.933.5603pfmccall@ Media Contact:Kimberly HaKKH
