Protein C deficiency, protein S deficiency, Factor V mutation, prothrombotic polymorphisms, Factor II G2021A, and the homozygous TT genotype of the methylenetetrahydrofolate reductase (MTHFR) C677T polymorphism were found to be associated with increased risk of arterial thrombosis in neonates. Here, MTHFR is linked to Arterial thrombosis.