Identification of novel USH2A mutations in patients with autosomal recessive retinitis pigmentosa via targeted next ‑generation sequencing.

Identification of novel USH2A mutations in patients with autosomal recessive retinitis pigmentosa via targeted next‑generation sequencing. Mol Med Rep. 2020 Apr 22;: Authors: Zhu X, Li X, Tian W, Yang Y, Sun K, Li S, Zhu X Abstract Retinitis pigmentosa (RP) is a group of inheritable blindness retinal diseases characterized by the death of photoreceptor cells and a gradual loss of peripheral vision. Mutations in Usher syndrome type 2 (USH2A) have been reported in RP with or without hearing loss. The present study aimed to identify causative mutations in a cohort of families with RP from China. A cohort of 62 non‑syndromic families with RP and 30 sporadic cases were enrolled in this study. All affected members underwent a complete ophthalmic examination, including fundus photography, visual‑field test and optical coherence tomography examination. Next‑generation sequencing‑targeted sequencing of 163 genes involved in inheritable retinal disorders was performed on the probands. Stringent bioinformatics data analysis was applied to identify potential candidate variants. In total, 6 novel mutations and 2 known mutations of USH2A were identified in 4 families with RP. A stop‑gain mutation (c.C1731A) and a missense mutation (c.G8254A) were identified in RP family RP‑2148. In another RP family, RP‑2150, a known mutation (c.G802A) and a novel frameshift insertion mutation (c.12086dupA) were discovered. A novel stop‑gain mu...
Source: Molecular Medicine Reports - Category: Molecular Biology Tags: Mol Med Rep Source Type: research