The homoplasmic mutation m.1555A>G in the mitochondrial MT-RNR1 (12S rRNA) gene has been associated with aminoglycoside-induced and nonsyndromic sensorineural deafness. Testing is offered to patients likely to receive aminoglycosides and also to individuals with hearing loss, particularly where maternal inheritance has been noted.
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Great Ormond Street Hospital NE Thames Regional Genetics Service Laboratories
Great Ormond Street Hospital for Children
37 Queen Square