Defining Acute Myeloid Leukemia Ontogeny in Older Patients

AML in elderly patients (pts) is associated with poor outcomes and often arises from antecedent hematological disorders (AHD), classified as secondary AML (sAML). In order to validate the use of somatic mutations to determine AML ontogeny in the elderly population, we identified 178 elderly (>70yo) AML pts with NexGen Sequencing data. Pts were divided clinically into pAML or sAML based on prior history of AHD. Pts were then reclassified into 4 groups based on somatic mutations and cytogenetics as suggested by Lindsley et al: group 1 (pAML) with CBF rearrangements, 11q23/MLL, and NPM1 mutation (MT); group 2 (sAML) with SRSF2, SF3B1, U2AF1, ZRSR2, ASXL1, EZH2, BCOR, or STAG2 MT; group 3 with TP53 MT; and group 4 as not otherwise specified (NOS).

Source: Clinical Lymphoma, Myeloma and Leukemia - November 7, 2019 Category: Hematology Authors: Megan Melody, Andrew Kuykendall, David Sallman, Najla Al Ali, Ling Zhang, Chetasi Talati, Eric Padron, Kendra Sweet, Martine Extermann, Alan List, Jeffrey Lancet, Rami Komrokji Tags: Original Study Source Type: research