Document Detail


Non-invasive prenatal determination of fetal gender using QF-PCR analysis of cell-free fetal DNA in maternal plasma.
MedLine Citation:
PMID:  22192861     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
BACKGROUND: Detection of cell-free fetal DNA (cffDNA) in maternal plasma has given rise to the possibility of new non-invasive approaches for early prenatal diagnoses. We evaluated the feasibility and accuracy of non-invasive fetal gender determination using quantitative fluorescent-polymerase chain reaction (QF-PCR) analysis of circulating cffDNA in the first-trimester maternal plasma. METHODS: Plasma samples were prospectively collected from 202 singleton pregnancies at 4 to 13weeks of gestation. Fetal gender was determined by QF-PCR with the sex-determining region Y (SRY) and amelogenin X/Y (AMELX/Y) genes. The result was confirmed by fetal karyotyping or phenotype at birth. RESULTS: Of the 202 pregnancies, 162 had pregnancy outcomes available and could be included in our evaluation. The accuracies of AMELX/Y, SRY, and combined AMELX/Y+SRY analysis for fetal gender determination were 83.3%, 82.1%, and 97.5%, respectively, compared with those of the invasive approach and the fetal gender outcome at birth (82 males and 80 females). Combined AMELX/Y+SRY analysis had the highest sensitivity (98.8%) for fetal gender determination with a specificity of 96.3%. Moreover, fetal gender detection by the combined AMELX/Y+SRY analysis at 11 to 13weeks of gestation was 100% correct. CONCLUSION: Fetal gender determination could be accurately determined from maternal cffDNA in the first-trimester using QF-PCR analysis of combined AMELX/Y+SRY.
Authors:
Shin Young Kim; Ji Hyae Lim; So Yeon Park; Moon Young Kim; June Seek Choi; Hyun Mee Ryu
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-12-13
Journal Detail:
Title:  Clinica chimica acta; international journal of clinical chemistry     Volume:  -     ISSN:  1873-3492     ISO Abbreviation:  -     Publication Date:  2011 Dec 
Date Detail:
Created Date:  2011-12-23     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  1302422     Medline TA:  Clin Chim Acta     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011 Elsevier B.V. All rights reserved.
Affiliation:
Laboratory of Medical Genetics, Cheil General Hospital and Women's Healthcare Center, Seoul, Republic of Korea.
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