IQCB1 and inherited retinal dystrophy: Renal abnormalities can have a variable range of onset in Senior‐Løken syndrome, as reported for patients with IQCB1‐related retinal dystrophy where nephronophthisis and end‐stage renal disease commences between age 3 and 50 years (Estrada‐Cuzcano et al., 2011).