Clinical and Genetic Features of Ehlers–Danlos Syndrome Type IV, the Vascular Type
Published on Mar 9, 2000in The New England Journal of Medicine70.67
· DOI :10.1056/NEJM200003093421001
Background Ehlers–Danlos syndrome type IV, the vascular type, results from mutations in the gene for type III procollagen (COL3A1). Affected patients are at risk for arterial, bowel, and uterine rupture, but the timing of these events, their frequency, and the course of the disease are not well documented. Methods We reviewed the clinical and family histories of and medical and surgical complications in 220 index patients with biochemically confirmed Ehlers–Danlos syndrome type IV and 199 of their affected relatives. We identified the underlying COL3A1 mutation in 135 index patients. Results Complications were rare in childhood; 25 percent of the index patients had a first complication by the age of 20 years, and more than 80 percent had had at least one complication by the age of 40. The calculated median survival of the entire cohort was 48 years. Most deaths resulted from arterial rupture. Bowel rupture, which often involved the sigmoid colon, accounted for about a quarter of complications but rarely l...