9 doctors weighed in:

Is XXY klinefelter's syndrome related at all to marfan's syndrome?

9 doctors weighed in
Dr. Steven Neish
Pediatrics - Cardiology
5 doctors agree

In brief: No

The two syndromes have some similar features, but they are different syndromes that are unrelated.
Klinefelter syndrome is caused by ahaving at least one extra x chromosome in a person who has a y chromosome (normal male=46 xy, klinefelter=47xxy). Typical marfan syndrome is caused by a mutation in fbn1, coding for fibrillin-1.

In brief: No

The two syndromes have some similar features, but they are different syndromes that are unrelated.
Klinefelter syndrome is caused by ahaving at least one extra x chromosome in a person who has a y chromosome (normal male=46 xy, klinefelter=47xxy). Typical marfan syndrome is caused by a mutation in fbn1, coding for fibrillin-1.
Dr. Steven Neish
Dr. Steven Neish
Thank
Dr. Robert Kwok
Pediatrics
2 doctors agree

In brief: No

Klinefelter syndrome is a group of features seen in some males with an extra x chromosome (they are xxy).
A klinefelter syndrome male tends to be taller than expected compared to his father and brothers. Klinefelter syndrome is not related to marfan syndrome.

In brief: No

Klinefelter syndrome is a group of features seen in some males with an extra x chromosome (they are xxy).
A klinefelter syndrome male tends to be taller than expected compared to his father and brothers. Klinefelter syndrome is not related to marfan syndrome.
Dr. Robert Kwok
Dr. Robert Kwok
Thank
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