FRCPath Haem Part 1 MCQ-Oncology 327
- amirhayat2527
- Dec 27, 2025
- 0 min read
A patient relapses 6 months after CD19 CAR-T therapy for Relapsed B-ALL. Flow cytometry shows CD19-negative blasts. What is the most likely mechanism?
CAR-T exhaustion
Antigen escape
Loss of CD22
Poor lymphodepletion

