The lack of significant correlations among symptoms and objective measures of impaired gastro-intestinal transport may possibly be related to sensory impairment due to expression of dystrophin isoform DP116 in peripheral nerve tissue,[40] and autosomal homologues of DP116 in sensory ganglia.[41] Moreover, gastro-intestinal symptoms may be underreported by some DMD patients suffering from a variety of severe symptoms, including immobility and inadequate respiration, which may be more distressing. Here, DMD is linked to Duchenne muscular dystrophy.