PMID- 12968936 OWN - NLM STAT- MEDLINE DCOM- 20031215 LR - 20220408 IS - 1470-1626 (Print) IS - 1470-1626 (Linking) VI - 126 IP - 3 DP - 2003 Sep TI - Rapid and simple prenatal diagnosis of common chromosome disorders: advantages and disadvantages of the molecular methods FISH and QF-PCR. PG - 279-97 AB - Molecular techniques have been developed for prenatal diagnosis of the most common chromosome disorders (trisomies 21, 13, 18 and sex chromosome aneuploidies) where results are available within a day or two. This involves fluorescence in situ hybridization (FISH) and microscopy analysis of fetal cells or quantitative fluorescence polymerase chain reaction (QF-PCR) on fetal DNA. Guidance is provided on the technological pitfalls in setting up and running these methods. Both methods are reliable, and the risk for misdiagnosis is low, although slightly higher for FISH. FISH is also more labour intensive than QF-PCR, the latter lending itself more easily to automation. These tests have been used as a preamble to full chromosome analysis by microscopy. However, there is a trend to apply the tests as 'stand-alone' tests for women who are at relatively low risk of having a baby with a chromosome disorder, in particular that associated with advanced age or results of maternal serum screening programmes. These women comprise the majority of those currently offered prenatal diagnosis with respect to fetal chromosome disorders and if introduced on a larger scale, the use of FISH and QF-PCR would lead to substantial economical savings. The implication, on the other hand, is that around one in 500 to one in 1000 cases with a mentally and/or physically disabling chromosome disorder would remain undiagnosed. FAU - Hulten, Maj A AU - Hulten MA AD - Department of Biological Sciences, University of Warwick, Coventry CV4 7AL, UK. maj.hulten@warwick.ac.uk FAU - Dhanjal, Seema AU - Dhanjal S FAU - Pertl, Barbara AU - Pertl B LA - eng PT - Journal Article PT - Review PL - England TA - Reproduction JT - Reproduction (Cambridge, England) JID - 100966036 RN - 0 (DNA Primers) SB - IM MH - Chromosome Disorders/*diagnosis MH - DNA Primers MH - Female MH - Humans MH - In Situ Hybridization, Fluorescence MH - Mosaicism MH - Polymerase Chain Reaction/methods MH - Predictive Value of Tests MH - Pregnancy MH - Prenatal Diagnosis/*methods MH - Risk MH - Sensitivity and Specificity MH - Sex Chromosome Disorders/diagnosis MH - Tandem Repeat Sequences MH - Trisomy/diagnosis RF - 72 EDAT- 2003/09/13 05:00 MHDA- 2003/12/16 05:00 CRDT- 2003/09/13 05:00 PHST- 2003/09/13 05:00 [pubmed] PHST- 2003/12/16 05:00 [medline] PHST- 2003/09/13 05:00 [entrez] AID - 10.1530/rep.0.1260279 [doi] PST - ppublish SO - Reproduction. 2003 Sep;126(3):279-97. doi: 10.1530/rep.0.1260279.