Molecular Cytogenetic Characterization of an inv(Y)(p11.2q11.221∼q11.222) in a Syrian Family.
Constitutional chromosomal abnormalities are an important cause of miscarriage, infertility, congenital anomalies and mental retardation in humans. Pericentric inversions of the human Y-chromosome [inv(Y)] are rather common and show an estimated incidence of 0.6-1:1,000 in males in the general population. Most of the reported cases with inv(Y) are familial. For carriers of pericentric inversions the risk of mental retardation or multiple abortions is not apparently increased and there is no relation with abnormal phenotypic features. Polymerase chain reaction (PCR) analysis to detect microdeletions along the Y-chromosome as well as cytogenetic and fluorescence in situ hybridization (FISH) analysis were done to delineate the characteristics of an inv(Y) in a Syrian family. Thus, we present a detailed molecular-cytogenetic characterization of a father and his two sons having an inv(Y)(p11. 2q11.221∼q11.222) with varying mental retardation features but otherwise normal phenotype.
Department of Molecular Biology and Biotechnology, Division of Human Genetics, Atomic Energy Commission of Syria, Damascus, Syria.
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Al-Achkar
Department of Molecular Biology and Biotechnology, Division of Human Genetics, Atomic Energy Commission of Syria, Damascus, Syria.
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Wafa
Department of Molecular Biology and Biotechnology, Division of Human Genetics, Atomic Energy Commission of Syria, Damascus, Syria.
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Al-Ablog
Department of Molecular Biology and Biotechnology, Division of Human Genetics, Atomic Energy Commission of Syria, Damascus, Syria.
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Moassass
Jena University Hospital, Friedrich Schiller University, Institute of Human Genetics, Jena, Germany.
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Liehr
Ampli-conic fertility genes; Fluorescence in situ hybridization (FISH); Inversion; Mental retardation; Y-Chromosome