Cited by 238Sexual Differentiation and DisordersEffects and risks of endocrine disrupting chemicalsUrological Disorders and Treatments

Anogenital distance as a marker of androgen exposure in humans

Open access
Thankamony, A., Pasterski, V., Ong, K. K., Acerini, C. L., Hughes, I. A.·2016·Andrology

Abstract

Abnormal foetal testis development has been proposed to underlie common disorders of the male reproductive system such as cryptorchidism, hypospadias, reduced semen quality and testicular germ cell tumour, which are regarded as components of a 'testicular dysgenesis syndrome'. The increasing trends and geographical variation in their incidence have been suggested to result from in utero exposure to environmental chemicals acting as endocrine disruptors. In rodents, the anogenital distance (AGD), measured from the anus to the base of genital tubercle, is a sensitive biomarker of androgen exposure during a critical embryonic window of testis development. In humans, several epidemiological studies have shown alterations in AGD associated with prenatal exposure to several chemicals with potential endocrine disrupting activity. However, the link between AGD and androgen exposure in humans is not well-defined. This review focuses on the current evidence for such a relationship. As in rodents, a clear gender difference is detected during foetal development of the AGD in humans which is maintained thereafter. Reduced AGD in association with clinically relevant outcomes of potential environmental exposures, such as cryptorchidism or hypospadias, is in keeping with AGD as a marker of foetal testicular function. Furthermore, AGD may reflect variations in prenatal androgen exposure in healthy children as shorter AGD at birth is associated with reduced masculine play behaviour in preschool boys. Several studies provide evidence linking shorter AGD with lower fertility, semen quality and testosterone levels in selected groups of adults attending andrology clinics. Overall, the observational data in humans are consistent with experimental studies in animals and support the use of AGD as a biomarker of foetal androgen exposure. Future studies evaluating AGD in relation to reproductive hormones in both infants and adults, and to gene polymorphisms, will help to further delineate the effect of prenatal and postnatal androgen exposures on AGD.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1111/andr.12156

Cites

103 of 103 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

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?

  • Higher androgen levels result in greater AGD length, and lower levels result in shorter AGD length.

    “Higher androgen levels result in greater AGD length, and lower levels result in shorter AGD length.”

    From Prenatal Origins of Endometriosis Pathology and Pain: Reviewing the Evidence of a Role for Low Testosterone (2023) · cites this paper as [12]

    The Introduction (page unavailable) describes AGD as a marker of prenatal androgen action, and the Conclusion (page unavailable) reports observational evidence linking AGD with fetal androgen exposure. But the Introduction says causal evidence in humans is indirect; the claim presents the relationship as a definite result of higher or lower androgen levels without limiting it to fetal exposure. (LLM, conf=0.87)

    Experimental — accuracy not yet measured
  • Anogenital distance (AGD) provides a proxy for androgen levels during the early programming window of fetal development in both sexes.

    “The anogenital distance (AGD), measured either from the anus to the posterior fourchette (AGD-AF) or the anus to the clitoral surface (AGD-AC) (Figure 1),12 provides a convenient, easily measurable proxy for androgen levels present during the early “programming window” of fetal development in both sexes.”

    From Prenatal Origins of Endometriosis Pathology and Pain: Reviewing the Evidence of a Role for Low Testosterone (2023) · cites this paper as [12]

    The Conclusion links human AGD to fetal androgen exposure, and the Definition and measurement methods section describes AGD measurements in both sexes. However, the paper describes the critical masculinisation programming window specifically in fetal male development; it does not establish that AGD reflects androgen levels during that same early window in both sexes. (LLM, conf=0.84)

    Experimental — accuracy not yet measured
  • Altered androgen exposure during the second trimester is likely a significant factor in the etiology of hypospadias.

    “The etiology of hypospadias is probably multifactorial, but it is likely that altered androgen exposure during the second trimester is a significant factor [9].”

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Thankamony, A., Pasterski, V., Ong, K. K., Acerini, C. L., & Hughes, I. A.
Affiliations
  • University of Copenhagen (DK)
  • University of Cambridge (GB)
Corresponding author
Thankamony, A.
Venue
Andrology
Publisher
Wiley
Published
2016-02-04
Volume
4
Issue
4
Pages
616-625
ISSN
  • 2047-2919 (ISSN-L)
  • 2047-2927
OpenAlex
W2254998737
Cited by
238
References
103
Citations by year
2026: 21 · 2025: 16 · 2024: 19 · 2023: 24 · 2022: 33 · 2021: 27 · 2020: 28 · 2019: 30 · 2018: 19 · 2017: 17 · 2016: 3
FWCI
2.08
Type
journal article
Language
en
Open access
Locations
  • Andrology (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • Apollo (University of Cambridge) (acceptedVersion)
Funders
  • Fifth Framework Programme
  • World Cancer Research Fund
  • Medical Research Council
  • Newlife Foundation for Disabled Children
  • Evelyn Trust
  • National Institute on Handicapped Research
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Sexual Differentiation and Disorders
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Effects and risks of endocrine disrupting chemicals
  • Health Sciences › Medicine › Urology › Urological Disorders and Treatments
Keywords
anogenital distance, androgen exposure, prenatal androgen exposure, testicular dysgenesis, cryptorchidism, hypospadias, endocrine disruptors, biomarkers, masculinization, semen quality, male fertility, testosterone, sex differences, genetic polymorphism
MeSH terms
Androgens, Anthropometry, Female, Genitalia, Female, Genitalia, Male, Humans, Male, Pregnancy, Prenatal Exposure Delayed Effects

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