Excision Repair Defect in Rothmund Thomson Syndrome

Vasseur, F.; Delaporte, E.; Zabot, M. T.; Sturque, M. N.; Barrut, D.; Savary, J. B.; Thomas, L.; Thomas, P.
May 1999
Acta Dermato-Venereologica;5/26/99, Vol. 79 Issue 2, p150
Academic Journal
Rothmund Thomson syndrome is a rare autosomal recessive skin disorder. The main clinical feature is poikiloderma appearing in early childhood associated with skeletal abnormalities. Early occurrence of malignancies is another relevant feature. Here we describe the clinical features of 2 patients with Rothmund Thomson syndrome who were investigated for the in vitro DNA repair capacities of blood cells following UVC radiation exposure. DNA excision repair, assessed with unscheduled DNA synthesis following UVC exposure, was decreased in both patients. Such a defect might explain the patients'sensitivity to sunlight and the relatively high risk of cancer associated with this syndrome.


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