Conditions / Genetic

Noonan syndrome 2

info · Genetic · ICD-10: Q87.1

A Noonan syndrome characterized by hypertrophic obstructive cardiomyopathy and that has_material_basis_in homozygous or compound heterozygous mutation in the LZTR1 gene on chromosome 22q11.

Signs and symptoms

  • Hyperpigmentation of the skin
  • Posteriorly rotated ears
  • Melanocytic nevus
  • Hypermelanotic macule
  • Pulmonary artery stenosis
  • Mitral valve prolapse
  • Atrial septal defect
  • Low-set ears
  • Redundant neck skin
  • Shield chest

Also known as: NS2