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  • Title: A Rare Case of Pericentric Inversion, Inv (21) (p12;q22) in Repeated Pregnancy Loss: A Case Report.
    Author: Tayebi N, Khodaei H.
    Journal: Oman Med J; 2011 Nov; 26(6):441-3. PubMed ID: 22253956.
    Abstract:
    Pericentric inversions are among the most frequent chromosomal rearrangements with a frequency of 1-2%. There is no phenotypic effect in the majority of pericentric inversion heterozygote carriers, when it is a balanced rearrangement. However, miscarriages, infertility and/or chromosomally unbalanced offspring can be observed in carriers of a pericentric inversion. This is a case of pericentric inversion of one chromosome 21: inv (21) (p12; q22) in repeated pregnancy loss. A couple was referred for cytogenetic examination due to idiopathic miscarriages. The proband proved to be a carrier of chromosomal inversion and her partner's karyotype was found to be normal. The karyotype of the proband is 46, xx, inv (21) (p12; q22). This abnormal karyotype is reported as a probable reason of miscarriage in the investigated couple. The risk of further miscarriages and the risk of a progeny with abnormal karyotype are rather high. Therefore, amniocenthesis for finding the chromosomal abnormality as a prenatal diagnosis are proposed for the patient if future pregnancy does not lead to miscarriage.
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