title: Marfan syndrome: what internists and pediatric or adult cardiologists need to know.
abstract: Marfan syndrome (MFS) is one of the most frequent connective tissue disorders, showing striking pleiotropism and clinical variability. There is autosomal dominant inheritance with complete penetrance but variable expression. Approximately 25% of MFS patients have no family history of the syndrome and represent sporadic cases due to new mutations. This hazardous condition is often associated with premature cardiovascular death unless surveillance and management are optimized. The fibrillin gene (FBN1) encodes the structure of the connective tissue protein fibrillin. MFS is caused by mutations in the fibrillin gene, located on chromosome 15 at locus 15q21. Fibrillin abnormalities reduce the structural integrity of different body systems, primarily involving the heart valves, blood vessels, lungs, bones, tendons, ligaments, cartilages, eyes, skin, spinal dura and the CNS. Patients with MFS are likely to have too little fibrillin within these structures, resulting in clinically relevant problems. For example, in the aortic wall, deficient fibrillin may trigger progressive aortic ectasia and may result in aortic dissection.
authors.affiliation: Klinik für Kinderkardiologie und angeborene Herzfehler, Deutsches Herzzentrum München, Klinik an der Technischen UniversiteatLazarettstr. 36D-80636 Munich, Germany. Kaemmerer@dhm.mhn.de
authors.forename: Harald
authors.initials: H
authors.lastname: Kaemmerer
authors.forename: Erwin
authors.initials: E
authors.lastname: Oechslin
authors.forename: Heide
authors.initials: H
authors.lastname: Seidel
authors.forename: Thomas
authors.initials: T
authors.lastname: Neuhann
authors.forename: Irmingard Maria
authors.initials: IM
authors.lastname: Neuhann
authors.forename: H Michael
authors.initials: HM
authors.lastname: Mayer
authors.forename: John
authors.initials: J
authors.lastname: Hess
mesh_terms: D000328:Adult; D002309:Cardiology; D002648:Child; D006801:Humans; D007388:Internal Medicine; D008382:Marfan Syndrome / Q000175:diagnosis* / Q000628:therapy*; D010372:Pediatrics