Subtle executive dysfunction have been reported in other X‐linked disorders, namely, in premutation carriers of Fragile X tremor/ataxia syndrome16 and ornithine transcarbamylase deficiency (OTCD), an urea cycle disorder.17 The evaluation of cognitive health in women carriers of DMD mutation not only informs neurobiological mechanisms that underpin higher order cognitive skills, but also has practical implications for anticipatory guidance. Here, DMD is linked to ornithine carbamoyltransferase deficiency.