FLT3 and acute myeloid leukemia: FLT3 mutations are associated with poor prognoses, increased relapse rates, and decreased overall survival.[17]FLT3 mutations were less frequent in South Korean patients with AML (6.7%) than in counterparts from other ethnic groups (generally reported to be 23%–27%).[18,19] A previous study also found the prevalence of this mutation among South Koreans to be relatively low (13%).[20] Interestingly, we did not detect the FLT3 D835 kinase domain-activating mutation in the South Korean cohort.