Muc19^sld

A spontaneous mutation inserted two CA repeats in intron 53 that results in decreased transcript stability. Additional mutations include: insertion of two GA repeats within intron 18, insertion of two T residues within intron 57 and a putative site within intron 52 of an TA repeat region that was intractable to sequencing. RT-PCR confirmed the absence of transcript expression in the sublingual gland.