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Use of Quantitative Fluorescent Polymerase Chain Reaction (QF PCR) in Prenatal Diagnostic of Fetal Aneuploidies in a 17 Month Period in Parallel with Karyotyping

Rijad Konjhodzic, Edina Dervovic, Ilvana Kurtovic-Basic, Meliha Stomornjak-Vukadin, Adis Muhic, Sumeja Baljevic, Aida Pirnat-Gegic, Ejub Basic, Nurija Bilalovic.




Abstract

Introduction: QF PCR has recently entered diagnostic practice as a possible way to bypass culturing of the fetal cells, as well as to provide a rapid response following amniocentesis. Material and methods: The effective value of the QF PCR remains a much debated issue, positions ranging from that it makes classic kayotyping obsolete except in special occasions, to that it is no more than a guideline for a mandatory karyotype. Current practices of the gynecology specialists generates samples in such fashion that kariotyping of samples quickly falls behind to the point of obsoleteness, because, by the time a karyotype has been finished, a window of opportunity for termination of pregnancy has closed. Results: QF PCR provides a rapid response alternative, but it is necessary to establish its reproducibility, as well as an algorithm of its use along classic kariotyping. This study contains samples processed in a period from August 1, 2012 to December 31 2013 in both QF PCR and classic karyotype. Object of this study was compare results obtained by two methods, and establish confidence interval of the QF PCR testing. Overall, 661 amniotic fluid samples were processed and typed with QF PCR, out of which 221 were done in parallel with karyiotyping, as an confirmation of results.

Key words: QF PCR, amniocentesis, kayotyping.






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