Mixed Phenotype Acute Leukemia, B/T/Myeloid

**Semantic type:** Neoplastic Process

**Definition:** A very rare mixed phenotype acute leukemia in which the blasts show evidence of B-cell, T-cell, and myeloid lineage but are negative for KMT2A rearrangement and t(9;22)(q34;q11.2) translocation.

**Synonyms:** - MPAL-B/T/M - Mixed Phenotype Acute Leukemia, B/T/Myeloid, NOS - Mixed Phenotype Acute Leukemia, B/T/Myeloid, NOS - Mixed Phenotype Acute Leukemia, B/T/Myeloid, Not Otherwise Specified - Mixed Phenotype Acute Leukemia, B/T/Myeloid, Not Otherwise Specified