CBFA2T3 (CBFA2/RUNX1 translocation partner 3) encodes a member of the myeloid translocation gene family which interact with DNA-bound transcription factors and recruit a range of corepressors to facilitate transcriptional repression. The t (16; 21) (q24; q22) translocation is one of the less common karyotypic abnormalities in acute myeloid leukemia. The translocation produces a chimeric gene made up of the 5'-region of the runt-related transcription factor 1 gene fused to the 3'-region of CBFA2T3. CBFA2T3 is also a putative breast tumor suppressor. Alternative splicing results in transcript variants.