The ubiquity of GJB2-associated hearing loss around the world is notable for a highly prevalent genetic disease. This work confirms the significant contribution of GJB2 gene mutations, particularly c.35delG, c.235delC and c.-23+1G>A, to congenital hearing loss in Gaza strip children and serves as both a reference for clinicians working up and counseling. Patients with congenital autosomal recessive non-syndromic hearing loss.