In addition we have performed a genetic screnning of 5 gene polymorphisms (ACE I/D, MTHFR 677C>T, MMP9-1562C>T, PAI 1 4G/5G; MMP12 A82G) reported in multiple case control studies to be genetic risk factors for the development of the abdominal aortic aneurysm (AAA) [4]. Here, MTHFR is linked to triple-A syndrome.