GIPC1 Repeat Expansion Testing

Description

Pathogenic GGC repeat expansions within the 5′ untranslated region of the GIPC1 gene have been associated with autosomal dominant oculopharyngodistal myopathy 2 (OPDM2).

Pathogenicity is dependent upon GGC repeat length according to the following ranges 1-2:

Normal Alleles

Mutable Normal Alleles

Intermediate/Uncertain Alleles

Reduced Penetrance Alleles

Full Penetrance Alleles

12-32

-

33-60

-

61 or more