SSCP banding pattern of PCR products of GJA8 exon 2 of patient samples affected 10 to affected 17, with primer set 4. M, 1Kb DNA ladder; Lane 1, A10; Lane 2, A11; Lane 3, A12; Lane 4, A13; Lane 5, A14; Lane 6, A14; Lane 7, A15; Lane 8, A16; Lane 9, A17. White arrowheads indicate an extra band in Lane 5 and 6.