Evidence map›Paper›PMID 32998748›Full record

ArticleReproductive biology and endocrinology : RB&E2020

Does the transfer of a poor quality embryo with a good quality embryo benefit poor prognosis patients?

Wenjie Wang, Jiali Cai, Lanlan Liu, Yingpei Xu, Zhenfang Liu, Jinghua Chen, Xiaoming Jiang, Xiaohua Sun, Jianzhi Ren

Open access · goldAbstract read
In one paragraph

Article in Reproductive biology and endocrinology : RB&E, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 1 pooled it
7.8field-weighted citation impact, top 2% 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

19 citing papers in PubMed, 1 synthesis or guideline pooled it, 37 citations in OpenAlex.

  1. ESHRE guideline: number of embryos to transfer during IVF/ICSI†.Human reproduction (Oxford, England) · 2024
    Guideline
  2. Addressing multiple pregnancies in in vitro fertilization-embryo transfer: Current status, challenges, and solutions.International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics · 2026
    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

9 authors at 1 institution in 1 country.

Wenjie WangReproductive Medicine Center, Xiamen University Affiliated Chenggong Hospital, Wenyuan Road No.94, Siming District, Xiamen, Fujian, 361001, People's Republic of China.
Jiali CaiReproductive Medicine Center, Xiamen University Affiliated Chenggong Hospital, Wenyuan Road No.94, Siming District, Xiamen, Fujian, 361001, People's Republic of China.
Lanlan LiuReproductive Medicine Center, Xiamen University Affiliated Chenggong Hospital, Wenyuan Road No.94, Siming District, Xiamen, Fujian, 361001, People's Republic of China.
Yingpei XuReproductive Medicine Center, Xiamen University Affiliated Chenggong Hospital, Wenyuan Road No.94, Siming District, Xiamen, Fujian, 361001, People's Republic of China.
Zhenfang LiuReproductive Medicine Center, Xiamen University Affiliated Chenggong Hospital, Wenyuan Road No.94, Siming District, Xiamen, Fujian, 361001, People's Republic of China.
Jinghua ChenReproductive Medicine Center, Xiamen University Affiliated Chenggong Hospital, Wenyuan Road No.94, Siming District, Xiamen, Fujian, 361001, People's Republic of China.
Xiaoming JiangReproductive Medicine Center, Xiamen University Affiliated Chenggong Hospital, Wenyuan Road No.94, Siming District, Xiamen, Fujian, 361001, People's Republic of China.
Xiaohua SunReproductive Medicine Center, Xiamen University Affiliated Chenggong Hospital, Wenyuan Road No.94, Siming District, Xiamen, Fujian, 361001, People's Republic of China.
Jianzhi RenReproductive Medicine Center, Xiamen University Affiliated Chenggong Hospital, Wenyuan Road No.94, Siming District, Xiamen, Fujian, 361001, People's Republic of China. rjz174@126.com.
Zhongshan Hospital of Xiamen University · CN

Funding

Xiamen Municipal Bureau of Science and Technology 201896Xiamen Municipal Bureau of Science and Technology 3502Z20194053
6 · The paper itself

Abstract

backgroundWhile single embryo transfer (SET) is widely advocated, double embryo transfer (DET) remains preferable in clinical practice to improve IVF success rate, especially in poor prognosis patients with only poor quality embryos (PQEs) available in addition to one or no good quality embryos (GQEs). Furthermore, previous studies suggest PQE might adversely affect the implantation of a GQE when transferred together. This study aims to evaluate the effect of transferring an additional PQE with a GQE on the outcomes in poor prognosis patients.

methodsA total of 5037 frozen-thawed blastocyst transfer (FBT) cycles between January 2012 and May 2019 were included. Propensity score matching was applied to control for potential confounders, and we used generalized estimating equations (GEE) models to identify the association between the effect of an additional PQE and the outcomes.

resultsOverall, transferring a PQE with GQE (Group GP) achieved significantly higher pregnancy rate (PR), live birth rate (LBR) and multiple pregnancy rate (MPR) than GQE only (group G). The addition of a PQE increased LBR in patients aged 35 and over and in patients who received over 3 cycles of embryo transfer (ET) (48.1% vs 27.2%, OR:2.56, 95% CI: 1.3-5.03 and 46.6% vs 35.4%, OR:1.6, 95% CI: 1.09-2.35), but not in women under 35 and in women who received less than 3 cycles of ET (48.7% vs 43.9%, OR:1.22, 95% CI: 0.93-1.59 and 48.3% vs 41.4%, OR:1.33, 95% CI: 0.96-1.85). Group GP resulted in significantly higher MPR than group G irrespective of age and the number of previous IVF cycles.

conclusionsAn additional PQE does not negatively affect the implantation potential of the co-transferred GQE. Nevertheless, the addition of a PQE contributes to both live birth and multiple birth in poor prognosis patients. Physicians should still balance the benefits and risks of DET.

Indexed as

Embryo TransferInfertilityPregnancy, MultipleAdultEmbryo, MammalianFemaleFertilization in VitroHumansInfant, NewbornMalePregnancyPregnancy OutcomePregnancy RatePrognosisQuality ControlRetrospective StudiesGood quality embryoPoor prognosis patientsPoor quality embryoPropensity score matchingSingle embryo transfer

Identifiers

PMID32998748
PMCPMC7526391
OpenAlexW3089397682

What OpenQuestion holds

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LicenceCC BY
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.