DM1 with 11 trinucleotide repeats of cytosine-thymine-guanine in allele 1 and more than 150 in allele 2 of the <i>myotonic dystrophy protein kinase</i> (<i>DMPK</i>) gene were found on genetic testing. The gene discussed is DMPK; the disease is myotonic dystrophy type 1.