Marfan's Syndrome: Genetic disorder of connective tissue. Abnormal connective tissue results from a defect in the protein fibrillin, which helps provide scaffolding and structural support between cells. Signs and symptoms include: excessive height, abnormally loose joints, long spiderlike fingers, poor vision, and a weakened heart and blood vessels due to inadequate connective tissue reinforcement. The trait is dominant and carried by the FBN1 gene. For you punk rockers out there, Joey Ramone was diagnosed with Marfan's.
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