Frameshift deletion of bases 4:211918 and 4:211919 resulting in the addition of LVDCA after aspartic acid 141 of the Crk RA, RC, RD and RG isoforms and premature truncation after these novel amino acids.
Deletion of bases 4:211918..211919 in Crk results in a frameshift and early translation termination after the additon of 5 novel amino acids (LVDCA) in the Crk RA, RB, RC, RD and RE isoforms.