Ulipristal acetate decreases transforming growth factor β3 serum and tumor tissue concentrations in patients with uterine fibroids

Women with uterine fibroids treated with ulipristal acetate have lower serum and tissue concentrations of transforming growth factor b3 when compared with women who did not receive the compound.

Volume 109, Issue 3, Pages 501–507.e2


Michał Ciebiera, M.D., Ph.D., Marta Włodarczyk, M.Sc., Małgorzata Wrzosek, M.Sc., Ph.D., Aneta Słabuszewska-Jóźwiak, M.D., Ph.D., Grażyna Nowicka, M.Sc., Ph.D., Grzegorz Jakiel, M.D., Ph.D.



To evaluate and compare transforming growth factor β3 (TGF-β3) serum concentration in patients with uterine fibroids (UFs) without hormone treatment, treated with ulipristal acetate (UPA), and controls; to evaluate TGF-β3 concentrations in UF tissue in patients without hormone treatment and those treated with UPA; and to evaluate the correlations of age and body mass index (BMI) with TGF-β3 serum and UF tissue levels between the groups.


Retrospective cohort study.


University teaching hospital.


A total of 141 patients divided into three groups: UFs non-UPA, UFs, and UPA, controls.


Medical history and examination, genital ultrasound scan, blood and tissue sampling, and measurement of TGF-β3 serum and tissue concentrations.

Main Outcome Measure(s)

Evaluation of the impact of UPA (3 months treatment), age and BMI on TGF-β3 serum and UF tissue levels.


The values of TGF-β3 serum and tissue concentrations statistically significantly differed between the non-UPA and UPA groups. The mean TGF-β3 serum concentrations were non-UPA group 32.24 ± 34.55 pg/mL, UPA group 10.88 ± 7.15 pg/mL, and controls 11.97 ± 10.30 pg/mL. The mean TGF-β3 tissue concentrations were non-UPA group 171.29 ± 91.81 pg/mg and UPA group 99.99 ± 60.63 pg/mg. Statistically significantly lower mean TGF-β3 serum and tissue concentrations were observed in patients treated with UPA. No statistically significant correlations between TGF-β3 concentrations and age or BMI were found.


Reduction of serum and tissue TGF-β3 concentrations in UFs may be an important component of the effect of UPA on UF biology. Further research in this area is necessary.

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