Variant: rs121909192 

    present in Gene: SMN2
    present in Chromosome: 5
    Position on Chromosome: 70076545
    Alleles of this Variant: G/C

rs121909192 in SMN2 gene and Juvenile Spinal Muscular Atrophy PMID 19716110 2009 A positive modifier of spinal muscular atrophy in the SMN2 gene.