MMP9 and ataxia telangiectasia: Notably, a microarray analysis of blood samples from AT patients revealed a deregulation of genes related to inflammation (ADA, ADORA3, ADRB2, ALOX5AP) [24], cellular migration (MMP9, FASLG, CX3R1, RAG1, TNF, IRAG1, CX3CR, and THBS1), and lipid deposition during the atherosclerotic process [24,25].