Frameshift insertion (4bp) between 4:6579977..6579978 , SNP 4:657974 C to G, SNP 4:657973 C to T, and SNP 4:657972 A to T resulting in the addition of IRCWRCCFVWRTSVGTRCRWRRTWINWR after valine 120 of all isoforms and premature truncation following these novel amino acids.