HTR2A and sudden infant death syndrome: In contrast, SIDS infants were distinct from controls with respect to 5-HT2A/C binding within the subnetwork: 81% of SIDS infants had at least one of the component nuclei within the olivocerebellar subnetwork with low 5-HT2A/C binding, compared to 18% of control infants (p < 0.001).