SPTLC2 and influenza: In fact, six (SLFN5, ARL5B, SPTLC2, IRF5, ADCY3, CCDC146) of the 38 genes implicated in our reQTL mapping were also identified in a recent reQTL mapping study for Escherichia coli lipopolysaccharide, influenza, and interferon-β in dendritic cells [35].