Evidence map›Paper›PMID 34369004›Full record

ArticleJournal of clinical laboratory analysis2021

The effect of A1298c polymorphism of the MTHFR gene on anti-Müllerian hormone levels: experimental and Web-based analysis.

Seyedeh Zahra Shahrokhi, Faranak Kazerouni, Firouzeh Ghaffari, Morteza Hadizadeh, Zahra Zolfaghary

Open access · goldAbstract read
In one paragraph

Article in Journal of clinical laboratory analysis, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
1.0field-weighted citation impact, top 23% 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

5 citing papers in PubMed, 7 citations in OpenAlex.

  1. Association ofBiomedicines · 2026
    Article
  2. Review
  3. The Study ofInternational journal of fertility & sterility · 2025
    Article
  4. Review
  5. Article
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

5 authors at 3 institutions in 1 country.

Seyedeh Zahra ShahrokhiDepartment of Laboratory Medicine, School of Allied Medical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran.ORCID https://orcid.org/0000-0002-2028-5918
Faranak KazerouniDepartment of Laboratory Medicine, School of Allied Medical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran.ORCID https://orcid.org/0000-0002-1022-0053
Firouzeh GhaffariDepartment of Endocrinology and Female Infertility, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran.ORCID https://orcid.org/0000-0002-9234-5318
Morteza HadizadehPhysiology Research Center, Institute of Basic and Clinical Physiology Sciences, Kerman University of Medical Sciences, Kerman, Iran.ORCID https://orcid.org/0000-0002-8866-0737
Zahra ZolfagharyReproductive Epidemiology Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran.ORCID https://orcid.org/0000-0002-8134-9268
Royan Institute · IRShahid Beheshti University of Medical Sciences · IRKerman University of Medical Sciences · IR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe 5,10-methylenetetrahydrofolate reductase (MTHFR) is an important enzyme of folate and methionine metabolism, which is expressed in human oocytes and preimplantation. Due to the involvement of MTHFR in female reproduction, we tend to evaluate the influence of MTHFR A1298C polymorphism on ovarian marker reserves such as serum anti-Müllerian hormone (AMH) levels in women after in vitro fertilization (IVF)/intracytoplasmic sperm injection (ICSI).

methodsA total of 100 women, who underwent ART treatment due to male factor infertility, were recruited into this study. MTHFR A1298C polymorphism was detected by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) technique, and serum AMH concentrations were measured by an ultrasensitive enzyme-linked immunosorbent assay (ELISA).

resultsWomen with the CC genotype had higher AMH levels (4.15 ± 1.67 ng/ml), albeit not significant, than carriers with other genotypes after ovarian stimulation. No significant differences existed in terms of miscarriage and live birth rates among different genotype groups.

conclusionThe presence of the C mutant allele of the 1298 polymorphism in the MTHFR gene led to an increasing trend in serum AMH concentrations; however, the numbers of oocytes retrieved decreased in women with mutated genotypes. The influence of the MTHFR C677T polymorphism on embryo quality and pregnancy rate after ART cycles remains unclear.

Indexed as

Fertilization in VitroPolymorphism, GeneticAbortion, SpontaneousAdultAnti-Mullerian HormoneFemaleHumansInternetMethylenetetrahydrofolate Reductase (NADPH2)Oocyte RetrievalOvulation InductionPregnancyAnti-Mullerian HormoneMethylenetetrahydrofolate Reductase (NADPH2)MTHFR protein, humananti-müllerian hormonemale factor infertilityMTHFR A1298C polymorphismoocyte retrievedPCR-RFLP

Identifiers

PMID34369004
PMCPMC8418515
OpenAlexW3187666102

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Registered trials

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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.