Furthermore, GJC3 (encoding Cx30.2/31.3), GJB3 (encoding Cx31), GJB1 (encoding Cx32), and GJA1 (encoding Cx43) gene mutations have been reported to cause non-syndromic deafness [90,91,92,93,94,95,96]. The gene discussed is GJA1; the disease is deafness.