KIT (P10721) variants and mutations

KIT (also known as P10721) is a human protein-coding gene encoding a mast/stem cell growth factor receptor protein. Stem-cell-factor signaling through this pathway supports hematopoietic progenitors, mast cells, melanocytes, and germ cells. Activating variants drive gastrointestinal stromal tumors, systemic mastocytosis, and other malignancies, whereas loss-of-function variants can cause piebaldism. This analysis covers 3,520 KIT variants and mutations. Of these, 45% have computational variant effect predictions. Disease context includes gastrointestinal stromal tumor, piebaldism, and cutaneous mastocytosis. Example KIT variants include R2*, R2G, and R2I.

Variant analysis overview

Variant and mutation evidence

Clinical, disease, and population context

Protein structure and variant hotspots

Data sources

Evidence in this analysis draws on EBI Proteins Variation, UniProt, gnomAD v4, EuropePMC, 3D Hotspot Analysis, Interaction Network Analysis, Protein Data Bank, AlphaFold DB, gnomAD constraint, Open Targets, ClinGen, MaveDB, LitVar.

Notable KIT variants

Examples include R2*, R2G, R2I, R2K, R2S, G3C, G3D, G3R. Listed records include available protein-change notation, database identifiers, clinical classifications, computational predictions, population evidence, experimental measurements, and disease context.