Evidence map›Paper›PMID 33316287›Full record

ReviewPharmacology & therapeutics2021

Pharmacokinetics, metabolism and serum concentrations of progestins used in contraception.

Alexis J Bick, Renate Louw-du Toit, Salndave B Skosana, Donita Africander, Janet P Hapgood

Open access · greenAbstract readReview
In one paragraph

Review in Pharmacology & therapeutics, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed, 1 pooled it
5.0field-weighted citation impact, top 4% 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

34 citing papers in PubMed, 1 synthesis or guideline pooled it, 57 citations in OpenAlex.

  1. The association between prescribed hormonal contraception and multiple sclerosis risk: a systematic review and meta-analysis.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2026
    Pooled it
  2. Trial
  3. Trial
  4. Trial
  5. Article
  6. Review
  7. Advances in Sources, Content Determination, and Bioactivity of 20α-Hydroxyprogesterone.Endocrine, metabolic & immune disorders drug targets · 2026
    Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Review
  13. Review
  14. PCOS and Obesity: Contraception Challenges.Open access journal of contraception · 2025
    Review
  15. Article
  16. Article
  17. Review
  18. Review
  19. Article
  20. 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 2 institutions in 1 country.

Alexis J BickDepartment of Molecular and Cell Biology, University of Cape Town, Private Bag X3, Rondebosch 7700, South Africa.
Renate Louw-du ToitDepartment of Biochemistry, Stellenbosch University, Stellenbosch 7602, South Africa.
Salndave B SkosanaDepartment of Molecular and Cell Biology, University of Cape Town, Private Bag X3, Rondebosch 7700, South Africa.
Donita AfricanderDepartment of Biochemistry, Stellenbosch University, Stellenbosch 7602, South Africa.
Janet P HapgoodDepartment of Molecular and Cell Biology, University of Cape Town, Private Bag X3, Rondebosch 7700, South Africa; Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Cape Town, South Africa. Electronic address: janet.hapgood@uct.ac.za.
University of Cape Town · ZAStellenbosch University · ZA

Funding

Combination treatment for protection against HIV1 and pregnancyR01HD083026 · NICHD · UNIVERSITY OF CAPE TOWN · PI HAPGOOD, JANET PATRICIA, HEL, ZDENEK · 2015 to 2019
$2.5M
Biological effects, hormone levels and mechanisms relevant to HIV-1 infection for women randomized to the injectable contraceptives depo-medroxyprogesterone acetate or norethisterone enanthate.R01AI152118 · NIAID · UNIVERSITY OF CAPE TOWN · PI CHEN, PAI-LIEN, HAPGOOD, JANET PATRICIA · 2020 to 2024
$2.3M
NIAID NIH HHS R01 AI152118NICHD NIH HHS R01 HD083026
6 · The paper itself

Abstract

Many different forms of hormonal contraception are used by millions of women worldwide. These contraceptives differ in the dose and type of synthetic progestogenic compound (progestin) used, as well as the route of administration and whether or not they contain estrogenic compounds. There is an increasing awareness that different forms of contraception and different progestins have different side-effect profiles, in particular their cardiovascular effects, effects on reproductive cancers and susceptibility to infectious diseases. There is a need to develop new methods to suit different needs and with minimal risks, especially in under-resourced areas. This requires a better understanding of the pharmacokinetics, metabolism, serum and tissue concentrations of progestins used in contraception as well as the biological activities of progestins and their metabolites via steroid receptors. Here we review the current knowledge on these topics and identify the research gaps. We show that there is a paucity of research on most of these topics for most progestins. We find that major impediments to clear conclusions on these topics include a lack of standardized methodologies, comparisons between non-parallel clinical studies and variability of data on serum concentrations between and within studies. The latter is most likely due, at least in part, to differences in intrinsic characteristics of participants. The review highlights the importance of insight on these topics in order to provide the best contraceptive options to women with minimal risks.

Indexed as

ContraceptionContraceptive AgentsProgestinsFemaleHumansContraceptive AgentsProgestinsContraceptionMetabolismPharmacokineticsProgestinSerum concentration

Identifiers

PMID33316287
PMCPMC8122039
OpenAlexW3111564527

What OpenQuestion holds

Textmetadata
LicenceTDM
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.