Ehlers-Danlos syndrome. A variant characterized by the deficiency of pro alpha 2 chain of type I procollagen

Arch Dermatol. 1987 Jan;123(1):76-9. doi: 10.1001/archderm.123.1.76.


The clinical findings and biochemical studies are described for a 30-year-old man with Ehlers-Danlos syndrome. Type analysis of collagen produced by cultured fibroblasts revealed the lack of a detectable pro alpha 2 chain of type I procollagen. The intracellular degradation rate of newly synthesized collagen was higher than that of normal cells, resulting in the reduction of net collagen production. Clinical manifestations characterized by cardiovascular abnormalities due to decreased collagen deposition in the aortic valve and the wall of aorta, hypermobility of the joints, and hyperextensibility of the skin in this patient may be closely related to the observations described above.

Publication types

  • Case Reports
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Cells, Cultured
  • Collagen / metabolism*
  • Ehlers-Danlos Syndrome / genetics*
  • Ehlers-Danlos Syndrome / metabolism
  • Fibroblasts / metabolism
  • Genetic Variation
  • Humans
  • Male
  • Peptide Fragments / deficiency*
  • Procollagen / deficiency*
  • Skin / metabolism


  • Peptide Fragments
  • Procollagen
  • Collagen