MFS is caused by a mutation in FBN1, one of the genes that make fibrillin, which results in abnormal connective tissue.[1] It is an autosomal dominant disorder.[1] In about 75% of cases, it is inherited from a parent with the condition, while in about 25% it is a new mutation.[1] Diagnosis is often based on the Ghent criteria,[9] family history and genetic testing (DNA analysis).[2][4][3]
There is no known cure for MFS.[1] Many of those with the disorder have a normal life expectancy with proper treatment.[1] Management often includes the use of beta blockers such as propranolol or atenolol or, if they are not tolerated, calcium channel blockers or ACE inhibitors.[4][5] Surgery may be required to repair the aorta or replace a heart valve.[5] Avoiding strenuous exercise is recommended for those with the condition.[4]
About 1 in 5,000 to 1 in 10,000 people have MFS.[4][10] Rates of the condition are similar in different regions of the world.[10] It is named after French pediatricianAntoine Marfan, who first described it in 1896.[11][12]
^Marfan, Antoine (1896). "Un cas de déformation congénitale des quartre membres, plus prononcée aux extrémitiés, caractérisée par l'allongement des os avec un certain degré d'amincissement [A case of congenital deformation of the four limbs, more pronounced at the extremities, characterized by elongation of the bones with some degree of thinning]". Bulletins et Mémoires de la Société Médicale des Hôpitaux de Paris (in French). 13 (3rd series): 220–226. OCLC493643386. NAID10014879958.