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. 2006 Oct;26(10):980-4.
doi: 10.1002/pd.1541.

Prenatal diagnosis of the Cockayne syndrome: survey of 15 years experience

Wim J Kleijer  1 , Marianne L T van der Sterre, Victor H Garritsen, Anja Raams, Nicolaas G J Jaspers
Affiliations

Prenatal diagnosis of the Cockayne syndrome: survey of 15 years experience

Wim J Kleijer et al. Prenat Diagn. 2006 Oct.

Abstract

Objective: Evaluation of results in a consecutive series of 29 prenatal diagnoses for the Cockayne syndrome.

Methods: Recovery of DNA-synthesis in UV-irradiated cultured fetal cells was measured by scintillation counting of incorporated (3)H-thymidine. Semiquantitative autoradiographic assessment of the recovery of RNA-synthesis (RecRS) was used as an adjunctive method.

Results: In 26 of the 29 pregnancies at risk, a definite diagnosis was directly made, based on normal (n = 23) or clearly reduced (n = 3) recovery of DNA-synthesis in UV-irradiated cultured chorionic villus (CV) cells (n = 23) or amniocytes (n = 3). Adjunctive studies were performed in several pregnancies to corroborate the initial results. On three occasions initial results were unreliable, which required investigation of the recovery of RNA-synthesis (n = 2) or even additional amniocentesis (n = 1) to achieve a firm diagnosis. Thus, four affected fetuses were diagnosed in 29 pregnancies at risk (13.8%).

Conclusion: Reliable prenatal diagnosis of the Cockayne syndrome can be made by the demonstration of a strongly reduced recovery of DNA-synthesis in UV-irradiated cultured chorionic villus cells or amniocytes. Assessment of the recovery of RNA-synthesis was needed as an adjunctive method in rare cases of poor cell growth and DNA-synthesis.

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