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Polar body based aneuploidy screening is poorly predictive of embryo ploidy and reproductive potential

PURPOSE: Polar body (polar body) biopsy represents one possible solution to performing comprehensive chromosome screening (CCS). This study adds to what is known about the predictive value of polar body based testing for the genetic status of the resulting embryo, but more importantly, provides the...

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Autores principales: Salvaggio, C. N., Forman, E. J., Garnsey, H. M., Treff, N. R., Scott, R. T.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer US 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4156943/
https://www.ncbi.nlm.nih.gov/pubmed/25106935
http://dx.doi.org/10.1007/s10815-014-0293-1
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author Salvaggio, C. N.
Forman, E. J.
Garnsey, H. M.
Treff, N. R.
Scott, R. T.
author_facet Salvaggio, C. N.
Forman, E. J.
Garnsey, H. M.
Treff, N. R.
Scott, R. T.
author_sort Salvaggio, C. N.
collection PubMed
description PURPOSE: Polar body (polar body) biopsy represents one possible solution to performing comprehensive chromosome screening (CCS). This study adds to what is known about the predictive value of polar body based testing for the genetic status of the resulting embryo, but more importantly, provides the first evaluation of the predictive value for actual clinical outcomes after embryo transfer. METHODS: SNP array was performed on first polar body, second polar body, and either a blastomere or trophectoderm biopsy, or the entire arrested embryo. Concordance of the polar body-based prediction with the observed diagnoses in the embryos was assessed. In addition, the predictive value of the polar body -based diagnosis for the specific clinical outcome of transferred embryos was evaluated through the use of DNA fingerprinting to track individual embryos. RESULTS: There were 459 embryos analyzed from 96 patients with a mean maternal age of 35.3. The polar body-based predictive value for the embryo based diagnosis was 70.3 %. The blastocyst implantation predictive value of a euploid trophectoderm was higher than from euploid polar bodies (51 % versus 40 %). The cleavage stage embryo implantation predictive value of a euploid blastomere was also higher than from euploid polar bodies (31 % versus 22 %). CONCLUSION: Polar body based aneuploidy screening results were less predictive of actual clinical outcomes than direct embryo assessment and may not be adequate to improve sustained implantation rates. In nearly one-third of cases the polar body based analysis failed to predict the ploidy of the embryo. This imprecision may hinder efforts for polar body based CCS to improve IVF clinical outcomes.
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spelling pubmed-41569432014-09-15 Polar body based aneuploidy screening is poorly predictive of embryo ploidy and reproductive potential Salvaggio, C. N. Forman, E. J. Garnsey, H. M. Treff, N. R. Scott, R. T. J Assist Reprod Genet Genetics PURPOSE: Polar body (polar body) biopsy represents one possible solution to performing comprehensive chromosome screening (CCS). This study adds to what is known about the predictive value of polar body based testing for the genetic status of the resulting embryo, but more importantly, provides the first evaluation of the predictive value for actual clinical outcomes after embryo transfer. METHODS: SNP array was performed on first polar body, second polar body, and either a blastomere or trophectoderm biopsy, or the entire arrested embryo. Concordance of the polar body-based prediction with the observed diagnoses in the embryos was assessed. In addition, the predictive value of the polar body -based diagnosis for the specific clinical outcome of transferred embryos was evaluated through the use of DNA fingerprinting to track individual embryos. RESULTS: There were 459 embryos analyzed from 96 patients with a mean maternal age of 35.3. The polar body-based predictive value for the embryo based diagnosis was 70.3 %. The blastocyst implantation predictive value of a euploid trophectoderm was higher than from euploid polar bodies (51 % versus 40 %). The cleavage stage embryo implantation predictive value of a euploid blastomere was also higher than from euploid polar bodies (31 % versus 22 %). CONCLUSION: Polar body based aneuploidy screening results were less predictive of actual clinical outcomes than direct embryo assessment and may not be adequate to improve sustained implantation rates. In nearly one-third of cases the polar body based analysis failed to predict the ploidy of the embryo. This imprecision may hinder efforts for polar body based CCS to improve IVF clinical outcomes. Springer US 2014-08-09 2014-09 /pmc/articles/PMC4156943/ /pubmed/25106935 http://dx.doi.org/10.1007/s10815-014-0293-1 Text en © The Author(s) 2014 https://creativecommons.org/licenses/by/4.0/ Open Access This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited.
spellingShingle Genetics
Salvaggio, C. N.
Forman, E. J.
Garnsey, H. M.
Treff, N. R.
Scott, R. T.
Polar body based aneuploidy screening is poorly predictive of embryo ploidy and reproductive potential
title Polar body based aneuploidy screening is poorly predictive of embryo ploidy and reproductive potential
title_full Polar body based aneuploidy screening is poorly predictive of embryo ploidy and reproductive potential
title_fullStr Polar body based aneuploidy screening is poorly predictive of embryo ploidy and reproductive potential
title_full_unstemmed Polar body based aneuploidy screening is poorly predictive of embryo ploidy and reproductive potential
title_short Polar body based aneuploidy screening is poorly predictive of embryo ploidy and reproductive potential
title_sort polar body based aneuploidy screening is poorly predictive of embryo ploidy and reproductive potential
topic Genetics
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4156943/
https://www.ncbi.nlm.nih.gov/pubmed/25106935
http://dx.doi.org/10.1007/s10815-014-0293-1
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