SCN5A and sudden infant death syndrome: Surprisingly, we did not identify pathogenic or likely pathogenic variants in SCN5A in our cohort; this contrasts with the 84/103 (82%) of SIDS cases reported in literature with variants in this gene, but we also observed that 47/84 (56%) of SCN5A variants reported in literature had conflicting evidence for pathogenicity when evaluated using modern data and criteria.