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Individuals with Marfan syndrome have an increased cancer risk in childhood. Adult cancer risk was not elevated overall, but endocrine tumors showed a higher incidence in adults with Marfan syndrome.

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Area of Science:

  • Genetics
  • Oncology
  • Epidemiology

Background:

  • Marfan syndrome is a genetic connective tissue disorder.
  • Cancer risk in Marfan syndrome patients is not well-established.
  • Previous studies suggested increased cancer risk in adults.

Purpose of the Study:

  • To assess cancer risk in individuals with Marfan syndrome.
  • To differentiate cancer risk by age group (childhood vs. adult).
  • To identify specific cancer types associated with Marfan syndrome.

Main Methods:

  • Nationwide matched cohort study using Swedish National registers.
  • 1544 individuals with Marfan syndrome matched with 50 controls each.
  • Cox proportional hazard models used to estimate cancer risk (Hazard Ratios).

Main Results:

  • Overall adult cancer risk was not increased (HR 1.00).
  • Increased risk of endocrine tumors in adults with Marfan syndrome (HR 2.86).
  • Significantly higher cancer risk in children with Marfan syndrome (HR 2.44).

Conclusions:

  • Marfan syndrome is associated with increased cancer risk in childhood.
  • Adults with Marfan syndrome show elevated risk for endocrine tumors, not overall cancer.
  • Further research needed to understand lifetime cancer risk across different ages.