There was a significant positive correlation of utrophin intensity with β-dystroglycan (β-DG) intensity at the sarcolemma of muscle fibres in a 4 and an 8 year old DMD patient (P11 and P12), but ɣ-sarcoglycan (ɣ-SG) and utrophin intensities had a significantly positive correlation only in fibres from P11, not P12 (Fig 4c and 4d). Here, UTRN is linked to Duchenne muscular dystrophy.