Rs121913114

rs121913114, also known as Ser279Cys or S279C, is a mutation in the FGFR3 gene on chromosome 4.

Acting in an autosomal dominant manner, the rs121913114(T) allele is considered to cause achondroplasia; see also OMIM 134934.0030

Note that 23andMe refers to this SNP as i5001264.