Rs121913105

rs121913105, also known as Lys650Met or K650M, is a mutation in the FGFR3 gene on chromosome 4.

Acting in an autosomal dominant manner, the rs121913105(T) allele is considered to cause achondroplasia, or at least a term called "SADDAN dysplasia"; see also OMIM 134934.0015.

Note that 23andMe refers to this SNP as i5001274 and i6010277.