Cytogenetic and fragile X molecular testing of individuals with mental retardation of unknown etiology
Date
1997Author
Patsalis, Philippos C.Sismani, Carolina
Hadjimarcou, Michael I.
Rose, Nancy C.
Stylianidou, Goula
Koukoulli, R.
Anastasiadou, Violetta C.
Constantinou-Deltas, Constantinos D.
Middleton, Lefkos T.
ISSN
1015-8146Source
Genetic CounselingVolume
8Pages
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The aim of this program was to investigate the patients with Mental Retardation Of Unknown Etiology (MROUE), on the island of Cyprus. The MROUE patients were examined cytogenetically for gross chromosomal abnormalities, and by molecular methods for the Fragile X syndrome pathology. Specialized physicians examined all institutionalized or non institutionalized patients throughout Cyprus. Cytogenetic analysis was carried out on 105 individuals, six of which showed various chromosomal aberrations. PCR and Southern blot analysis were carried out on 170 patients referred for exclusion of the Fragile X syndrome. Three patients had positive findings. Although the number of cases elucidated with this general approach was not spectacular, it allowed the resolution of a few clinically equivocal cases, to the satisfaction of the clinicians and, most importantly, the relatives involved. We believe that such screening programs should continue until all cases are thouroughly examined, thus providing definite genetic counseling and psychological support, at least in those cases that are clearly resolved. Equally important is the prospect for prevention through prenatal diagnostic programs, that are already available for such conditions.
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