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Study wrapper · #1305

Follicular kisspeptin-VEGF axis in polycystic ovary syndrome and ovarian hyperstimulation syndrome.

Korkmaz O, Karabulut S, Macit P Journal of assisted reproduction and genetics. 2026.
MixedCase-controlMentions: Kisspeptin

Editor's note

This is measurement of the body's own kisspeptin inside the follicle, not administration of a kisspeptin analogue, so it speaks to the peptide's reproductive biology rather than to any reported protocol. The design is retrospective and cross-sectional with 30 women per group, and the odds ratios for kisspeptin-54 and VEGF are very close to 1.0 per unit, which is why the authors themselves stop short of a predictive claim. The stepwise gradient across groups is the durable observation here; causal direction cannot be established from this data, since heavy ovarian stimulation could plausibly raise these levels rather than the reverse.

Plain-language abstract

Among 90 women undergoing IVF, follicular-fluid levels of kisspeptin-1, kisspeptin-54 and VEGF rose stepwise from normal responders to women with PCOS to women who developed ovarian hyperstimulation syndrome. Kisspeptin-54 and VEGF correlated strongly with standard markers of ovarian response such as AMH, antral follicle count and oocyte yield, and remained associated with hyperstimulation in models adjusting for those markers. The authors are explicit that these look like descriptive markers of the follicular environment rather than usable clinical predictors.