– BCL2-like 12 (BCL2L12 ) is a new member of the apoptosis-related BCL2 gene family, members of which are implicated in various malignancies. The mRNA expression of BCL2L12 may constitute a novel biomarker for the prediction of short-term relapse in nasopharyngeal carcinoma. BCL2L12 is a recently identified gene belonging to the BCL2 family, members of which are implicated in hematologic malignancies, including chronic lymphocytic leukemia (CLL). BCL2L12 can be considered as a new independent prognostic and chemotherapy response marker in AML. BCL2L12 mRNA expression may serve as a potential prognostic biomarker in tongue and/or larynx SCC, which principally constitute the great majority of HNSCC cases worldwide. BCL2L12 mRNA expression is a favorable prognostic marker of DFS for BC patients, suggesting its possible application as a novel prognostic indicator of this malignancy.