MAF (gene)Transcription factor Maf, also known as proto-oncogene c-Maf or V-maf musculoaponeurotic fibrosarcoma oncogene homolog, is a transcription factor that in humans is encoded by the MAF gene.TypesOne type, MafA, also known as RIPE3b1, promotes pancreatic development, as well as insulin gene transcription.InteractionsMAF has been shown to interact with: CREBBP EP300 MYB SOX9.