10 Important Facts On Trisomy 18

Today is National Trisomy Awareness Day. Below are 10 important facts on Trisomy 18.

  • It is also known as Edwards Syndrome
  • It is a condition caused by an error in cell division
  • An extra chromosome in 18 develops
  • Occurs in 1 out of every 2500 pregnancies in the United States
  • It is 1 in 6000 live births
  • Only 50% of babies who are carried to term will be born alive
  • Children are often born with heart defects
  • Features include a small head, small jaw, clenched fists and severe intellectual disabilities
  • It is named after John Hilton Edwards, who first described the syndrome in 1960
  • It affects different organ systems

 

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Turner Syndrome Characteristics

Turner Syndrome is a rare condition that affects only females. This occurs when the X chromosome is partially or totally missing.

Medical Sites

Boston Children’s Hospital
Genetics Home Reference
Kids Health
Mayo Clinic
Medscape
Wikipedia

Associations

Turner Syndrome Foundation
Turner Syndrome Society of the United States
Turner Syndrome Support Society- UK