Klinefelter syndrome (47, XXY) is a condition that wake up in guys who have actually an extra X chromosome, leading to an XXY sex chromosome karyotype.

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The syndrome can affect different step of language, physical, and also social development. It is estimated that 3,000 impacted boys room born annually in the US.


The signs and also symptoms the KSin young guys and teenagers may include:

a quietcharacter;tall stature (short torso, lengthy legs, and broader hips);shyness;small penis;fatigue;small, for sure testicles;weak bones;gynecomastia (enlarged chest tissue).

Note – due to the fact that KS deserve to be tough to notice, plenty of parents don’t recognize their child has the syndrome till he shows delays in puberty.

People who have actually KS have actually an boosted risk because that autoimmune disorders, choose – rheumatoid arthritis, lupus, and also Sjogren’s syndrome. Also, the syndrome is connected with an enhanced risk for breast cancer, varicose veins, lung disease, extragonadal germ cabinet tumor, and also osteoporosis.


Testosterone therapy can help sufferers with countless of the symptom of KS, yet the treatment must start at puberty.

Marfan Syndrome

Marfan syndrome is one inherited condition that influence the body’s connective tissue, which gives support, strength, and also elasticity come blood vessels, cartilage, heart valves, tendons, and other necessary parts the the physics body.

This autosomal dominant problem occursonce in every 10,000 come 20,000 people. It is named after Antoine Marfan, a French physician who an initial described the syndrome in 1896.

If you have actually MS, you have actually a 50:50 chance of happen on the problem to every of your children.


Common symptoms might include:

backward circulation of blood through the aortic and also mitral valves;floppiness the the mitral valve;tear (dissection) and also widening (aneurysm) of the main artery;nearsightedness (myopia);dislocation the the lenses that the eyes (ectopia lentis);protrusion of the chest wall surface (pectus deformity);an abnormalside-to-side curvature that the spine (scoliosis);overgrowth the the lengthy bones of the legs and arms.

Note – due to the fact that of the high degree of variability the the syndrome, numerous of this clinical attributes can be existing at birth or they can manifest later in childhood.


It can be complicated to diagnose because many sufferers have only a couple of typical symptoms and also no certain biochemical or histologic changes.

List the Celebrities, Actors, and OtherFamous world Who have actually (or room rumored) Klinefelter Syndrome or Marfan Syndrome:

1) Austin Carlile


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He was born top top September 27, 1987, in Ohio, and also is best known together the former lead vocalist the the bands ”Attack Attack!” and ”Of mice & Men.”

In 2005, Austin formed call It also with his high college friends.

Austin is experience a long procedure to fight the results of Marfan syndrome.

2) Brooke Moore

Originally named Bradley, she was assigned the male gender at birth and also went come an all-boys school. Eventually, Moore was diagnosed through Klinefelter syndrome.

3) Peter Mayhew


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Peter earn a location in cinematic history for his duty as Chewbacca in the Star battles franchise.

He was additionally diagnosed v Marfan syndrome.

4) Niccolo Paganini


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He to be a famous Italian violinist and also composer the the 19th century who is best remembered because that his ”24 Caprices for Solo Violin Op 1,” the he wrote between 1802 and also 1817.

The American Schonfeld was the an initial to breakthrough the theory that Niccolo Paganini was influenced by the Marfan syndrome.

5) Troye Sivan


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He is a singer and also actor the Australian origin, born in 1995. TroyeSivan began off as a singer in 2006 and in 2008 he exit his very first original music album.

Sivan is additionally quite renowned on society media, including Instagram (where he has an ext than 7 million followers) and YouTube (where his audience contains over 6.2 million people).

Troye suffers native a mild form of Marfan syndrome.

6) Isaiah Austin


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He is an American basketball player who played 2 years of university basketball because that Baylor University. Moreover, Isaiah had actually been considered a first-round possibility in the 2014 NBA draft.

On June 22, 2014, Isaiah had been diagnosed through Marfan syndrome.

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7) Vincent Schiavelli

Vincent was an actor that had actually made over 120 television and also film appearances.

He was additionally selected in 1997 by Vanity fair as among the finest character gibbs in the unified States.

Schiavelli was diagnosed v Marfan syndrome.

In addition, he functioned at the national conference helping teenagers with MS, whom he called his “genetic brothers and sisters.”

He died of lung cancer at period 57 in Italy.

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8) Michael Phelps

He to be born come Deborah Sue ‘Debbie’ and also Michael Fred Phelps in Baltimore, Maryland.

Phelps won 6 yellow medals at the 2004 Olympics, 8 yellow medals in ~ the 2008 Olympics, and also 4 gold medals at the 2012 Olympics.

He is the most celebrated athlete and also the many decorated Olympian ever before in the history of sports.

It was rumored that Michael Phelps, however, he tested negative for it. Phelps likewise wrote in his autobiography the he walk not have actually MS.

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9) Peter the Great

Peter the great was the Tsardom that Russia from might 1682 until his fatality in 1725.

It is thought that he had actually MS.

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10) Sergei Rachmaninoff

He was a composer and the last good figure the the Russian Romanticism tradition.

The size of his hands may have been a manifestation that MS.

However, the did not clearly exhibit any kind of of the various other clinical features typical of the syndrome.

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11) Arik Einstein

He was a vocalist because that Shleeshiyat Gesher Hayarkon (Yarkon bridge Trio), Batzal Yarok (Green Onion), and Hahalonot Hagvohim (The High Windows).

Arik had MarfanSyndrome. He died at the age of 74 at Ichilov Hospital in Tel Aviv, a few hours after ~ he experienced a deadly hemorrhage.

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#12) Andy Jackson

Andy Jackson is an Australian poet diagnosed with Marfan.

“When ns was very first diagnosed there was speak that the typical Marfan lifespan was 30 come 40 years,” Andy said ABC. That added:“Nowadays, if people are aware that they have it and also they’re monitored and also live appropriately, they can have rather a typical lifespan.”

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