The 18 p- syndrome
- 1 January 1976
- journal article
- research article
- Published by Springer Nature in European Journal of Nuclear Medicine and Molecular Imaging
- Vol. 123 (1) , 59-66
- https://doi.org/10.1007/bf00497681
Abstract
Four children, two girls and two boys, were found to have a short arm deletion of chromosome No. 18. Three of them exhibit a typical dysmorphy of the face showing retraction of the midface, broad-based, flat nose, hypertelorism, epicanthus, “carp mouth”, big, protruding, and low set ears, as well as a variable number of Turner-like features, failure of growth, mental retardation, and muscular hypotonia. A newly born child, who diet at 2 days of age exhibited severe brain defects of holoprosencephalic series. The clinical and cytogenetic findings are compared with the reviewed data of the 18 p deletion. The hypothesis of “gene-dosis compensation” is discussed in order to explain the variable phenotypical expression of 18 p- syndrome as there is obviously no correlation between the extent of the deficiency and the expression of malformations. Es wird über 4 Kinder, 2 Mädchen und 2 Jungen, mit einer Deletion am kurzen Arm des Chromosoms Nr. 18 berichtet. 3 Patienten zeigten Minderwuchs, mentale Retardation und ein charakteristisches Dysplasiemuster im Gesicht mit Hypertelorismus, Epicanthus, breit-basiger, flacher Nase, Karpfenmund, großen, abstehenden, tief ansetzenden Ohren, variablen Turner-Stigmata, Muskelhypotonie. Ein Neugeborenes, welches 2 Tage post partum verstarb, wies den bekannten schwersten Ausprägungsrad mit holoprosencephaler Hirnmißbildung auf. Die klinischen und cytogenetischen Befunde werden mit den bekannten Daten über das 18 p- Syndrom verglichen. Die Hypothese einer “Gen-Dosis-Kompensation” wird diskutiert, mit der sich der unterschiedliche Schweregrad im phänotypischen Ausdruck erklären ließe, da sich keine Korrelation zwischen der Größe der Defizienz und dem Grad der Mißbildungen feststellen läßt.This publication has 21 references indexed in Scilit:
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