NOD2 and Blau syndrome: At the outset of this study, 98 SNPs in NOD2 associated with either Blau Syndrome or Crohn’s disease were identified using published data (5, 6, 13–18) and the NCBI database of NOD2 SNPs (http://www.ncbi.nlm.nih.gov/SNP/snp_ref.cgi?locusId=64127).