Aberrant CD25 and Increased CD123 Expression Are Common in Acute Myeloid Leukemia with KMT2A Partial Tandem Duplication and Are Associated with FLT3 Internal Tandem Duplication.

ABSTRACT:

Background

KMT2A partial tandem duplication (PTD) occurs in approximately 5-10% of acute myeloid leukemia (AML) cases and is associated with poor prognosis. While its cytogenetic and molecular features are well described, the immunophenotypic characteristics of AML with KMT2A-PTD remain incompletely defined.

Methods

We identified 47 cases of AML with KMT2A-PTD by optical genome mapping. All cases underwent flow cytometric immunophenotypic analysis and next-generation sequencing using an 81-gene panel.

Results

The cohort included 32 men and 15 women with a median age of 67 years (range, 19-87). Thirty-eight cases were de novo AML, and nine were secondary to myelodysplastic syndrome and/or myeloproliferative neoplasm. Most cases (93%) demonstrated a

SUBMITTER: Wei Q 

PROVIDER: S-EPMC12839231 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature