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Deletion of a 15pter→q13 segment of maternal origin was observed in a mentally retarded infant. In addition to the symptoms common to deletions of proximal 15q, the phenotype included myoclonic epilepsy of early infantile onset. The deletion was caused by a 3:1 disjunction in the mother, who...
A 19-year-old woman with the Alagille syndrome developed papillary thyroid carcinoma with lung metastasis. She was diagnosed as having Alagille syndrome at the age of 8. Following total thyroidectomy and lymph nodes dissection, iodine-131 therapy was conducted for local and distant metastases....
Lymphocytes from both Down syndrome (DS) patients and age-matched control donors have been investigated to identify a possible disturbance in chromosomal G2 repair. Analyses of caffeine treatments during G2 have shown that the frequency of chromosomal aberrations is higher in DS lymphocytes than...
Retinoblastoma may be caused by constitutional mutations in the retinoblastoma gene which segregates as an autosomal dominant inherited predisposition for developing retinoblastoma tumours. Since 75% of these cases are new mutations, there is a need for methods to identify carriers of such...
An intragenic elastin Hint I polymorphism has been used to study the inheritance of elastin alleles in a family considered to show recessive inheritance of pseudoxanthoma elasticum (PXE). The marker has proved informative, excluding the elastin gene as a cause of PXE in this family. In addition,...
We have evaluated a simple and rapid 2-step dual-label assay (DELFIA®) for alphafetoprotein (AFP) and free β subunit of human gonadotropin (hCGβ) in second-trimester screening for Down syndrome. Based on stored serum samples from 1059 normal control pregnancies and 72 cases of Down syndrome,...
Fluorescence in situ hybridization (FISH) with a chromosome-region-specific DNA probe was used prospectively on uncultured amniocyte interphase cells to detect an unbalanced chromosome abnormality that resulted in cri du chat or 5p – syndrome. Confirmation was performed by routine cytogenetics.
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