In a molecular autopsy on 141 SIDS cases, <6 months of age and 133 non/infants (19-58 years old) six major channelpathy genes, KCNQ1, KCNH2, SCN5A, KCNE1, KCNE2, and RyR2 were characterize in 274 cases which were autopsy negative. Here, KCNE2 is linked to sudden infant death syndrome.