MAP3K14 (Mitogen-Activated Protein Kinase Kinase Kinase 14) encodes mitogen-activated protein kinase kinase kinase 14, which is a serine/threonine protein-kinase. This kinase binds to TRAF2 and stimulates NF-kappaB activity. It shares sequence similarity with several other MAPKK kinases. It participates in an NF-kappaB-inducing signalling cascade common to receptors of the tumour-necrosis/nerve-growth factor (TNF/NGF) family and to the interleukin-1 type-I receptor. MAP3K14 is a Protein Coding gene. Diseases associated with MAP3K14 include Nik Deficiency. Among its related pathways are 4-1BB Pathway and RANK Signaling in Osteoclasts.