Evidence map›Paper›PMID 34472017›Full record

SynthesisJournal of assisted reproduction and genetics2021

Evidence-based clinical prioritization of embryos with mosaic results: a systematic review and meta-analysis.

Ali Mourad, Roland Antaki, François Bissonnette, Obey Al Baini, Boutros Saadeh, Wael Jamal

Open access · greenAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Journal of assisted reproduction and genetics, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 2 pooled it
5.0field-weighted citation impact, top 5% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

9 citing papers in PubMed, 2 syntheses or guidelines pooled it, 19 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Article
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  5. Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 4 institutions in 3 countries.

Ali MouradDepartment of Obstetrics and Gynecology, Faculty of Medicine, University of Montreal, Montreal, QC, Canada.
Roland AntakiDepartment of Obstetrics and Gynecology, Faculty of Medicine, University of Montreal, Montreal, QC, Canada.
François BissonnetteDepartment of Obstetrics and Gynecology, Faculty of Medicine, University of Montreal, Montreal, QC, Canada.
Obey Al BainiDepartment of Research, Gilbert and Rose-Marie Chagoury School of Medicine, Lebanese American University, Beirut, Lebanon.
Boutros SaadehBurjeel Hospital, Abu Dhabi, United Arab Emirates.
Wael JamalDepartment of Obstetrics and Gynecology, Faculty of Medicine, University of Montreal, Montreal, QC, Canada. w.jamal@cliniqueovo.com.ORCID http://orcid.org/0000-0001-7738-1495
Ottawa Fertility Centre · CALebanese American University · LBMafraq Hospital · AEUniversité de Montréal · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThe purpose of this review and meta-analysis is to standardize the practice of mosaic embryo transfer, based on the current available evidence.

methodsThis is a systematic review and meta-analysis. Relevant studies published were comprehensively selected using PubMed, Medline, Embase, and CENTRAL until 5 March 2021. Prospective and retrospective studies reporting the genetic analysis and clinical outcomes of mosaic embryo transfer were included. Risk of bias assessment was based on the Newcastle-Ottawa scale for the non-randomized studies. The primary and secondary outcomes were combined ongoing pregnancy and live birth rate and miscarriage rate, respectively.

resultsThere were no differences between low and high mosaic embryos when a cut-off of 40% was used in terms of OP/LBR and SAB. However, low mosaics with a cut-off of 50% compared to high mosaics showed a significantly higher OP/LBR in the NGS but not in the a-CGH group, and a significantly lower risk of SAB. No differences were noted between mosaic monosomies versus trisomies and single versus double mosaics for both OP/LBR and SAB. Finally, segmental mosaics showed a higher OP/LBR and a lower SAB compared to whole chromosomes, and single and double mosaics had a higher OP/LBR compared to complex mosaics.

conclusionsA cut-off of 50% in defining low versus high mosaic embryos is preferable to a threshold of 40% when using NGS platform. No priority was established for mosaic trisomies over monosomies. Single and double mosaics must be preferred over complex mosaics and segmental mosaics must be preferred over whole chromosome mosaics. These results should be interpreted in the context of specific chromosomes involved in the mosaicism.

Indexed as

MosaicismAbortion, SpontaneousEmbryo TransferEvidence-Based MedicineFemaleFertilization in VitroHumansLive BirthPregnancyPregnancy OutcomePreimplantation DiagnosisAssisted reproductive technologyIn vitro fertilizationMosaicismPreimplantation genetic testing for aneuploidy (PGT-A)

Identifiers

PMID34472017
PMCPMC8609000
OpenAlexW3196771187

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.