SynthesisArchives of gynecology and obstetrics2026
Fertility treatment and risk of non-gynecological cancer: a systematic review.
Synthesis in Archives of gynecology and obstetrics, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper, 1 of them a synthesis that pooled 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.
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.
Who cites it
1 citing paper in PubMed, 1 synthesis or guideline pooled it.
- Association between infertility and thyroid cancer risk: a systematic review and meta-analysis.Frontiers in oncology · 2026Pooled it
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors.
Funding
Abstract
purposeEvidence on the relationship between fertility treatment and non-gynecologic cancers remains limited. This study synthesizes available research on the association between fertility treatments and the risk of non-gynecologic cancers in women with infertility.
methodsWe systematically searched MEDLINE, EMBASE, and the Cochrane Library for studies involving women with infertility who received fertility treatment, compared with untreated women or the general population. Primary outcomes included the incidence of thyroid, colorectal, gastric, and lung cancers. Subgroup analyses were conducted by type of ovarian stimulation drug, in vitro fertilization (IVF) status, parity, length of follow-up, and choice of reference group.
resultsFifteen studies met the inclusion criteria. Fertility treatment was positively, though imprecisely, associated with thyroid cancer (relative risk [RR] = 1.22; 95% confidence interval [CI]: 0.95-1.57). No increased risk of colorectal cancer was observed among treated women. Clomiphene citrate use was associated with a higher risk of thyroid cancer (RR = 1.28; 95% CI: 1.07-1.54) and a lower risk of colorectal cancer (RR = 0.79; 95% CI: 0.65-0.96).
conclusionFertility medications may increase the risk of thyroid cancer while potentially reducing the risk of colorectal cancer in women with infertility. Given the small number of studies and their heterogeneity, these findings should be interpreted cautiously. Further research is needed to clarify these associations.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
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.