Establishment of iPSC line from a Chinese infant (XACHi012-A) with Jervell and Lange-Nielsen syndrome carrying combined KCNQ1 frameshift c.431delC(p.I145Sfs*92) and nonsense c.1175G > A (p.W392X) variants and two iPSC lines from the parents (XACHi013-A, XACHi014-A).