Asciminib & Standard-of-Care Integration in Maintenance Therapy for POST Allogeneic Stem Cell Transplant (Allo-HSCT) of Patient With Ph+ B-ALL or Blastic Transformed CML
brief summary
The goal of this clinical trial is to learn if Asciminib, a first in class allosteric inhibitor, as a add-on maintenance therapy can provides benefits and further prevents relapse in post allogenic hematopoietic stem-cell transplant (HSCT) of patients with Philadelphia chromosome-positive B-cell acute lymphoblastic leukemia (Ph+ B-ALL) or blastic transformed Chronic Myeloid Leukemia (CML-BP). The main questions it aims to answer are: Would Ascminib add-on maintenance therapyimprove Morphological relapse-free survival rate? Would Ascminib add-on maintenance therapy improve Molecular relapse-free survival and Overall survival ? Any toxicity or intolerable events during Ascminib add-on maintenance therapy? Researchers will compare Study arm (Ascminib plus tyrosine-kinase inhibitors \[TKIs\]) and Control arm (TKIs only) to see if Ascminib add-on maintenance therapy would provide better relapse-free survival (RFS) with optimal tolerability. Participants will * Enrolled and Randomized into either Study arm or Control arm * Take Ascminib plus selected TKI or selected TKI only according to schedule * Visit the clinic once every 2-4 weeks for checkups and tests * Record and Report any adverse event and graft-versus-host-disease (GvHD) development
detailed description
Philadelphia chromosome-positive B-cell acute lymphoblastic leukemia (Ph+ B-ALL) or blastic transformed Chronic Myeloid Leukemia (myeloid or lymphoid) (CML-BP) represent a group of high-risk disease. The outcome has improved since the introduction of tyrosine kinase inhibitors (TKIs). However, a significant proportion of patients still relapse despite undergoing allogeneic (allo-) hematopoietic stem cell transplant (HSCT) and post-transplant maintenance with TKIs. Moreover, many patients may not be able to tolerate the standard recommended dose of TKIs due to cytopenia especially during the early phase after transplant.
Asciminib is a first in class allosteric inhibitor that works by a mechanism totally different from the current TKIs in market. Its safety and efficacy have been studied in previous studies. We therefore postulate that combination of standard ATP-competitive TKIs (our current standard of care) and asciminib as post allo-HSCT maintenance can more effectively reduce risk of relapse post-transplant without increased toxicities.
This is a two-arm, parallel group, single-center, prospective, open-label, randomized clinical study to investigate the efficacy and safety of adding asciminib to the standard-of-care for post allogenic HSCT maintenance in patients with Ph+ B-ALL or CML-BP to prevent post-HSCT relapse.
Subjects in study group will receive Asciminib plus standard of care (SOC) while those in control group will receive standard of care. Eligible subjects will be randomized into study group and control group in a 2:1 ratio.
The subjects in study group commence study drug (Asciminib) for post-transplant maintenance at 80 mg QD (in combination with nilotinib or dasatinib) or 60 mg QD (in combination with imatinib) after stable count recovery (i.e. absolute neutrophile count \[ANC\] ≥ 1.0 × 109/L, granulocyte colony-stimulating factor (G-CSF) independent and platelet ≥ 50 × 109/L, transfusion independent). SOC TKI will be added from 5th week onwards after.
official title
Efficacy and Safety of Adding Asciminib to the Standard-of-care for Post Allogenic Hematopoietic Stem-cell Transplant (HSCT) Maintenance in Philadelphia Chromosome-positive B-cell Acute Lymphoblastic Leukemia (Ph+ B-ALL) or Blastic Transformed CML (Myeloid or Lymphoid) (CML-BP)