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Updated: Jun 13, 2025

Assessment of Resistance to Tyrosine Kinase Inhibitors by an Interrogation of Signal Transduction Pathways by Antibody Arrays
Published on: September 19, 2018
Molecular response with asciminib 20 mg QD in a patient intolerant to multiple TKIs
Ruth Stuckey1, Laura Navarrete Bullón1, Asunción Borrero Borrego2,3
1Hematology Department, Hospital Universitario de Gran Canaria Dr. Negrín, Las Palmas, Spain.
Abstract:
This case highlights a young CML patient who achieved a major molecular response (MMR) after just four months with a subtherapeutic dose of asciminib. The patient could not tolerate full-dose asciminib, or the full dose of two previous tyrosine kinase inhibitors (TKI) due to myelotoxicity, but blood counts recovered rapidly upon TKI suspension and reduced dosing enabled sustained treatment. This is the second reported case of the use of 20 mg QD asciminib, four times below the recommended dose, and the first to demonstrate efficacy at this dose. The study emphasizes asciminib's potential for overcoming treatment challenges associated with multi-resistant/intolerant CML patients.
Insights
A young patient with chronic myeloid leukemia (CML) achieved major molecular response (MMR) using a low dose of asciminib, overcoming intolerance to other treatments. This demonstrates the drug
Area of Science:
- Hematology
- Oncology
- Pharmacology
Background:
- Chronic myeloid leukemia (CML) treatment often involves tyrosine kinase inhibitors (TKIs).
- Patient intolerance and resistance to standard TKI doses present significant treatment challenges.
- Asciminib is a novel TKI targeting the BCR-ABL1 protein in CML.
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