Autosomal recessive nonsyndromic hearing loss 1A (DFNB1A, OMIM 220290), caused by pathogenic variants in the GJB2 gene (13q12.11, OMIM 121011), is considered to be the most common form of HL in many global populations [4]. This evidence concerns the gene GJB2 and autosomal recessive nonsyndromic hearing loss 1A.