Jervell and Lange-Nielsen Syndrome 2, also known as jlns2, is related to jervell and lange-nielsen syndrome 1 and long qt syndrome 1, and has symptoms including syncope An important gene associated with Jervell and Lange-Nielsen Syndrome 2 is KCNE1 (Potassium Voltage-Gated Channel Subfamily E Regulatory Subunit 1). The drugs Ibutilide and Progesterone have been mentioned in the context of this disorder. Affiliated tissues include heart and heart-ventricle, and related phenotypes are prolonged qt interval and congenital sensorineural hearing impairment