SCN5A and sudden infant death syndrome: Ackerman et al. [182] genetically analyzed postmortem cardiac tissue from 45 SIDS and 48 possible SIDS cases, obtained between September 1997 and August 1999 in the State of Arkansas, USA, for mutations in SCN5A. In two of these 93 cases, a missense mutation in SCN5A was found (A997S and R1826H).