BLK (BLK Proto-Oncogene, Src Family Tyrosine Kinase) is a Protein Coding gene. Diseases associated with BLK include Maturity-Onset Diabetes Of The Young, Type 11 and Systemic Lupus Erythematosus. Among its related pathways are Gene expression (Transcription) and MAPK-Erk Pathway. Gene Ontology (GO) annotations related to this gene include transferase activity, transferring phosphorus-containing groups and protein tyrosine kinase activity. An important paralog of this gene is HCK.