Niu Li et al. also reported a 15-month-old Chinese boy with retinal detachment and development delay, who was negative for mutation related to the exudative vitreoretinopathy but a heterozygous nonsense mutation (c.1627C>T, p. Gln558X) in CTNNB1 gene was found [6]. The gene discussed is CTNNB1; the disease is Familial exudative vitreoretinopathy.