Chromosomal abnormalities · USMLE Step 1

A child presents with hypertelorism, cleft lip/palate, seizures, and a deletion on chromosome 4p. Which condition is this?

  1. Wolf-Hirschhorn syndrome
  2. Edwards syndrome
  3. Patau syndrome
  4. Angelman syndrome
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Correct answer: Wolf-Hirschhorn syndrome

Wolf-Hirschhorn syndrome is due to a deletion on chromosome 4p. Clinical features include facial abnormalities and seizures. The other syndromes have distinct chromosomal etiologies.

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