Cited by 36Thyroid Disorders and TreatmentsReproductive Health and TechnologiesOvarian function and disorders

Impact of thyroid autoimmunity on assisted reproductive technology outcomes and ovarian reserve markers: an updated systematic review and meta-analysis

Busnelli, Andrea, Beltratti, Carola, Cirillo, Federico, Bulfoni, Alessandro, Lania, Andrea, Levi-Setti, Paolo Emanuele·2022·Thyroid

Abstract

Background: Thyroid autoimmunity (TAI) has a high prevalence among women of reproductive age. Investigating its possible impact on ovarian function and fertility is, thus, of utmost relevance. The aim of this systematic review and meta-analysis was to elucidate the effect of TAI on both assisted reproductive technology (ART) outcomes and ovarian reserve. Methods: This systematic review and meta-analysis was restricted to two groups of research articles investigating the association between TAI and: (1) autologous ART outcomes (i.e., fertilization rate [FR], implantation rate, clinical pregnancy rate [CPR], miscarriage rate, and live birth rate), (2) markers of ovarian reserve (i.e., anti-Müllerian hormone, basal follicle stimulating hormone, antral follicle count, and number of oocytes retrieved). Studies including women affected by overt hypo/hyperthyroidism were excluded. Relevant studies were identified by a systematic search in PubMed, MEDLINE, ClinicalTrials.gov, Embase, and Scopus, from database inception to May 1, 2022. Results: From a total of 432 identified publications, 22 studies were included in Group 1 and 26 studies in Group 2. The presence of TAI was associated with a higher risk of miscarriage (7606 participants, odds ratio [OR] 1.52, confidence interval [CI 1.14–2.01], p = 0.004, I 2 = 53%), lower chance of embryo implantation (7118 participants, OR 0.72, [CI 0.59–0.88], p = 0.001, I 2 = 36%), and live birth (11417 participants, OR 0.73, [CI 0.56–0.94], p = 0.02, I 2 = 71%). These associations were no longer observed in a subgroup analysis of patients who exclusively underwent intracytoplasmic sperm injection (ICSI). The FR and CPR as well as the mean values of surrogate markers of oocyte quantity appeared not to be affected by TAI. Conclusions: This data synthesis suggest a higher risk of adverse ART outcomes in women with positive TAI. However, the reliability of these findings is hampered by the relatively low quality of the evidence and significant heterogeneity in many of the meta-analyses. The possible protective effect of ICSI is promising but should be confirmed in controlled prospective clinical trials. PROSPERO Registration ID : CRD42021236529.

Integrity signals

Registry

Crossref · 10.1089/thy.2021.0656

Cites

81 of 81 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

This paper’s full text isn’t openly available, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • A recent systematic review and meta-analysis documents that assisted reproduction treatment results in a decrease in free T4 and rise in TSH in women with normal thyroid function before stimulation.

    “A recent systematic review and meta-analysis documents what has long been suspected, that this treatment results in a decrease in free T4 and rise in TSH in women with normal thyroid function before stimulation.”
  • The decrease in free T4 and rise in TSH after ovarian stimulation is due to a rapid increase of thyroid hormone-binding protein production that far exceeds the rate of increase in a normal pregnancy, with extent determined by the duration and intensity of ovarian stimulation.

    “This is due to a rapid increase of thyroid hormone-binding protein production that far exceeds the rate of increase in a normal pregnancy, the extent of which is also determined by the duration and intensity of ovarian stimulation (OS) (89).”

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Busnelli, A., Beltratti, C., Cirillo, F., Bulfoni, A., Lania, A., & Levi-Setti, P. E.
Affiliations
  • Humanitas University (IT)
  • IRCCS Humanitas Research Hospital (IT)
  • Division of Obstetrics and Gynecology, Humanitas S. Pio X Hospital, Rozzano, Italy.
Corresponding author
Busnelli, Andrea
Venue
Thyroid
Published
2022-09
Volume
32
Issue
9
Pages
1010-1028
ISSN
  • 1050-7256 (ISSN-L)
  • 1557-9077
OpenAlex
W4285077205
Cited by
36
References
81
Citations by year
2026: 15 · 2025: 5 · 2024: 11 · 2023: 5
FWCI
0.75
Type
journal article
Language
en
Open access
closed
Locations
  • Thyroid (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Thyroid Disorders and Treatments
  • Health Sciences › Medicine › Reproductive Medicine › Reproductive Health and Technologies
  • Health Sciences › Medicine › Reproductive Medicine › Ovarian function and disorders
Keywords
thyroid autoimmunity, assisted reproduction outcomes, ovarian reserve, miscarriage, embryo implantation, live birth rate, anti-Müllerian hormone, antral follicle count, follicle-stimulating hormone, intracytoplasmic sperm injection, female fertility, oocyte quantity, oocyte retrieval number, fertilization rate, clinical pregnancy rate
MeSH terms
Abortion, Spontaneous, Female, Follicle Stimulating Hormone, Humans, Pregnancy, Prospective Studies, Thyroid Gland, Reproducibility of Results, Biomarkers, Autoimmunity, Pregnancy Rate, Reproductive Techniques, Assisted, Live Birth, Anti-Mullerian Hormone, Ovarian Reserve

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review