A new point mutation in exon 12 of the dystrophin gene was identified
in a DMD patient using multiple SSCP analysis, which allows the simult
aneous study of several exons. The mutation is an A insertion at posit
ion 1580 of the cDNA sequence, leading to a stop codon in the translat
ional reading frame. This mutation was npt observed in a sample of 70
DMD patients.