At 10 to 12 weeks of pregnancy, examining a piece of placental tissue through a test called chorionic villus sampling can be performed to make a diagnosis. Another prenatal test can be performed called amniocentesis at 16 to 18 weeks of pregnancy.Marfan syndrome is expressed dominantly. This means a child with one parent a bearer of the gene has a 50% probability of getting the syndrome. In 1996, the first preimplantation genetic testing (PGT) therapy for Marfan was conducted; in essence PGT means conducting a genetic test on early-stage IVF embryo cells and discarding those embryos affected by the Marfan mutation. Prognosis
Prior to modern cardiovascular surgical techniques and medications such as losartan, and metoprolol, the prognosis of those with Marfan syndrome was not good: a range of untreatable cardiovascular issues was common. Lifespan was reduced by at least a third, and many died in their teens and twenties due to cardiovascular problems. Today, cardiovascular symptoms of Marfan syndrome are still the most significant issues in diagnosis and management of the disease, but adequate prophylactic monitoring and prophylactic therapy offers something approaching a normal lifespan, and more manifestations of the disease are being discovered as more patients live longer. Women with Marfan syndrome live longer than men. Epidemiology
Marfan syndrome affects males and females equally, and the mutation shows no ethnic or geographical bias. Estimates indicate about 1 in 5,000 to 10,000 individuals have Marfan syndrome.
History
Marfan syndrome is named after Antoine Marfan, the French pediatrician who first described the condition in 1896 after noticing striking features in a five-year-old girl. The gene linked to the disease was first identified by Francesco Ramirez at the Mount Sinai Medical Center in New York City in 1991. Famous patients
Famous people who have had Marfan syndrome include:

Isaiah Austin
Javier Botet
Austin Carlile
Bradford Cox
Euell Gibbons
Flo Hyman
Jonathan Jeanne
Vincent Schiavelli
Troye Sivan
John TavenerIn addition the following historical figures and celebrities often appear on lists of people with Marfan syndrome, but from case to case the evidence is speculative, questionable, or even refuted. See also
Ehlers–Danlos syndrome
Kashin–Beck disease
Loeys–Dietz syndrome
Nail-Patella syndrome
Mitral valve prolapse

Bibliography
Lorenz, Megaera. "Lorenz, Maegara "The Mystery of Akhenaton: Genetics or Aesthetics"". Heptune.com. Archived from the original on February 8, 2010. Retrieved March 21, 2010. Montserrat, Dominic (2003) [2000]. Akhenaten: History, Fantasy and Ancient Egypt (1st paperback ed.). London; New York: Routledge. ISBN 0415301866. Reeves, Nicholas (2019) [2001]. Akhenaten: Egypts False Prophet (Electronic ed.). London; New York: Thames & Hudson. ISBN 978-0-500-29469-7. LCCN 00108868. References
External links

Marfan syndrome at Curlie
Orphanets disease page on Marfan syndrome