ADA2 and Blau syndrome: Molecular analysis of Nucleotide binding oligomerization domain 2 (NOD 2) gene in patients suspected to have Blau syndrome (11/14 patients) and Adenosine deaminase 2(ADA2) gene for Adenosine Deaminase 2 (ADA2) deficiency was performed in-house in Pediatric Immunology Laboratory, Advanced Pediatric Center by Sanger sequencing.