PNP and short chain acyl-CoA dehydrogenase deficiency: Other reports have included the successful inclusion of ADA-SCID [879] and purine nucleoside phosphorylase-deficient SCID (added earlier) [880] on the screening panel, detection of SCAD in family members as a result of NBS [881], mild elevations of citrulline detected through NBS [882] and a possible algorithm to guide the diagnostic process, and a pilot demonstrating the value of dried bloodspot analysis of cCMV in infants with hearing loss [883,884].