Description
The c.9570+1G>A variant in USH2A has been reported in 4 Chinese individuals: 2 w ith Usher syndrome, 1 with hearing loss, and 1 with retinitis pigmentosa, and se gregated with disease in at least 3 affected individuals from 3 families (Huang 2013, Yang 2013, Xu 2014, Qu 2014). All of these individuals were compound hete rozygous. In addition, this variant has been identified in 7/8606 of East Asian chromosomes by the Exome Aggregation Consortium (ExAC, http://exac.broadinstitut e.org). Although this variant has been seen in the general population, its freq uency is low enough to be consistent with a recessive carrier frequency. The c.9 570+1G>A variant occurs in the invariant region (+/- 1,2) of the splice consensu s sequence and is predicted to cause altered splicing leading to an abnormal or absent protein. In summary, this variant meets our criteria to be classified as pathogenic for autosomal recessive Usher syndrome (www.partners.org/personalized medicine/lmm).
| # | Sample | Method | Observation |
|---|
| Origin | Affected | Number tested | Tissue | Purpose | Method | Individuals | Allele frequency | Families | Co-occurrences |
|---|
| 1 | germline | not provided | not provided | not provided | not provided | | 1 | not provided | 1 | not provided |
