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Neurofibromatosis type 2 (NF2) is an autosomal dominant disorder that predisposes to nervous system tumors. The schwannomin (also termed merlin) protein encoded by the NF2 gene shows a close relationship to the family of cytoskeleton-to-membrane proteins linkers ERM (ezrin-radixin-moesin proteins). Even though penetrance of the disease is >95% and no… (More)
Cytogenetic and fluorescence in situ hybridization studies have shown the presence of telomeric repeats in translocation present in three patients with hematopoietic malignancies. One had jumping translocations, involving 1q12 and 2q, 16p, and 19q. These sequences were detected by FISH only in derivative chromosomes t(1;16) and t(1;19) in the first patient,… (More)
A series of 226 antenatal diagnoses of chromosome structural re-arrangements in 181 couples has shown the usefulness of such diagnosis for couples including a genitor carrying a balanced anomaly. Analysis of the data has elicited major variations in the incidence of unbalanced anomalies in foetal cells and has provided information which can usefully be… (More)
The enzymatic activities of gamma-glutamyl-transpeptidase and of aminopeptidase M have been determined in amniotic fluids taken in pregnancies with a trisomic conceptus. The low values obtained in these fluids may be the consequence of fetal growth retardation.