NCIt synonyms : NS4; GF1; Gingival Fibromatosis, Hereditary, 1 Gene; Son of Sevenless Homolog 1 (Drosophila) Gene; Son of Sevenless, Drosophila, Homolog 1 Gene; HGF; GGF1; GINGF; SOS Ras/Rho Guanine Nucleotide Exchange Factor 1 wt Allele; Son of Sevenless Homolog 1 Gene;
NCIt definition : Human SOS1 wild-type allele is located in the vicinity of 2p21 and is approximately
143 kb in length. This allele, which encodes son of sevenless homolog 1 protein, plays
a role in both signaling and guanine nucleotide exchange. Mutation of the gene is
associated with both gingival fibromatosis type 1 and Noonan syndrome type 4.;