Frameshift deletion of bases 4:606326 through 4:606338 resulting in the addition of PIPVQWTLYHQI after glutamine 121 of all onecut isoforms and premature truncation after these novel amino acids.
Deletion of bases 4:606326..606338 in onecut results in a frameshift and early translation termination after the additon of 12 novel amino acids (PIPVQWTLYHQI).