title: BRAF mutation: supporting diversity in HCL.
abstract: In this issue of Blood, Xi and colleagues report on v-raf murine sarcoma viral oncogene homolog B1 (BRAF) mutations in hairy cell leukemia (HCL) subsets, demonstrating that BRAF V600E mutations are absent in variant HCL forms and in a subset of classic HCL (HCLc).
authors.affiliation: M D Anderson Cancer Center.
authors.forename: Jan A
authors.initials: JA
authors.lastname: Burger