Trial reportBreast cancer research and treatment2022
The progesterone-receptor modulator, ulipristal acetate, drastically lowers breast cell proliferation.
Trial report in Breast cancer research and treatment, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT02922127 (A Prospective, Randomized, Single-blind Study to Compare the Effects of Daily Ulipristal Acetate), which is not on this map. Cited by 4 papers.
What it found
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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.
A Prospective, Randomized, Single-blind Study to Compare the Effects of Daily Ulipristal Acetate (UPA) 10mg With a Combined Oral Contraceptive (COC) Pill on Breast Epithelial Cell Proliferation in Reproductive Age Women
Who cites it
4 citing papers in PubMed, 23 citations in OpenAlex.
- Antiprogestins reduce epigenetic field cancerization in breast tissue of young healthy women.Genome medicine · 2022Trial
- Article
- Experimental Induction of Mammary Carcinogenesis Using 7,12-Dimethylbenz(a)anthracene and Xenograft in Rats.Cureus · 2025Article
- Targeting nuclear hormone receptors for the prevention of breast cancer.Frontiers in medicine · 2023Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors at 3 institutions in 1 country.
Funding
Abstract
purposeThe proliferation of breast epithelial cells increases during the luteal phase of the menstrual cycle, when they are exposed to progesterone, suggesting that ulipristal acetate, a selective progestin-receptor modulator (SPRM), may reduce breast cell proliferation with potential use in breast cancer chemoprevention.
methodsWomen aged 18-39 were randomized 1:1 to ulipristal 10-mg daily or to a combination oral contraceptive (COC) for 84 days. Participants underwent a breast biopsy and breast MRI at baseline and at end of study treatment. Proliferation of breast TDLU cells was evaluated by Ki67 immunohistochemical stain. We evaluated the breast MRIs for background parenchymal enhancement (BPE). All slides and images were masked for outcome evaluation.
resultsTwenty-eight treatment-compliant participants completed the study; 25 of whom had evaluable Ki67 results at baseline and on-treatment. From baseline to end of treatment, Ki67 % positivity (Ki67%+) decreased a median of 84% in the ulipristal group (N = 13; 2-sided p (2p) = 0.040) versus a median increase of 8% in the COC group (N = 12; 2p = 0.85). Median BPE scores decreased from 3 to 1 in the ulipristal group (p = 0.008) and did not decrease in the COC group.
conclusionUlipristal was associated with a major decrease in Ki67%+ and BPE. Ulipristal would warrant further investigation for breast cancer chemoprevention were it not for concerns about its liver toxicity. Novel SPRMs without liver toxicity could provide a new approach to breast cancer chemoprevention.
trial registrationNCT02922127, 4 October 2016.
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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 Socratic graph.