The Disputable Discourse on Accuracy and Effectiveness of PGT-A  in Light of Advancements in Genetic Tools

Sadeghi, Mohammad Reza

doi:10.18502/jri.v22i3.6714

Cited by 1 publication

(1 citation statement)

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“…This involves genetic analysis of a small number of cells (biopsy) taken from the placenta cell lineage of a blastocyst-stage embryo [ 9 ]. However, in some embryos, this biopsy will fail to diagnose the presence of genetic aberrations within the same embryo due to mosaicism (a mixture of cells: a proportion with the expected number of chromosomes and a proportion with a deviation in this number) [ 10 , 11 ]. Additionally, the transfer of biopsied embryos has been associated with an increased risk of developing preeclampsia, a pregnancy complication that predisposes the mother and child to a lifetime increased risk of developing cardiovascular disease [ 12 ].…”

Section: Introductionmentioning

confidence: 99%

Viewing early life without labels: optical approaches for imaging the early embryo

Chow,

Tan,

Upadhya

et al. 2024

Biology of Reproduction

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Embryo quality is an important determinant of successful implantation and a resultant live birth. Current clinical approaches for evaluating embryo quality rely on subjective morphology assessments or an invasive biopsy for genetic testing. However, both approaches can be inherently inaccurate and crucially, fail to improve the live birth rate following the transfer of in vitro produced embryos. Optical imaging offers a potential non-invasive and accurate avenue for assessing embryo viability. Recent advances in various label-free optical imaging approaches have garnered increased interest in the field of reproductive biology due to their ability to rapidly capture images at high-resolution, delivering both morphological and molecular information. This burgeoning field holds immense potential for further development, with profound implications for clinical translation. Here, our review aims to: 1) describe the principles of various imaging systems, distinguishing between approaches that capture morphological and molecular information, 2) highlight the recent application of these technologies in the field of reproductive biology, and 3) assess their respective merits and limitations concerning the capacity to evaluate embryo quality. Additionally, the review summarizes challenges in the translation of optical imaging systems into routine clinical practice, providing recommendations for their future development. Finally, we identify suitable imaging approaches for interrogating the mechanisms underpinning successful embryo development.

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