Table 4.

Gene defects associated with the early repolarization syndrome (ERS).

	Locus	Gene	Ion channel	Percent of probands
ERS1	12p11.23	KCNJ8	↑ IK−ATP	<1%
ERS2	12p13.3	CACNA1C	↓ ICa	4.1%
ERS3	10p12.33	CACNB2b	↓ ICa	8.3%
ERS4	7q21.11	CACNA2D1	↓ ICa	4.1%
ERS5	12p12.1	ABCC9	↑IK−ATP	<1%
ERS6	3p21	SCN5A	↓ INa	<1%
ERS7	3p22.2	SCN10A	↓ INa	<1%