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OncoMatch/Clinical Trials/NCT06143631

Prescription of Letrozole for Uterine Myoma

Is NCT06143631 recruiting? Yes, currently enrolling (May 2026). This Phase 4 trial studies Letrozole 2.5mg for leiomyoma, uterine.

Phase 4RecruitingUniversity of California, San FranciscoNCT06143631Data as of May 2026

Treatment: Letrozole 2.5mgThe PLUM Study is a randomized, double-blinded, 2-arm, parallel-group, placebo-controlled trial is designed to compare the efficacy of letrozole versus placebo on leiomyoma-related symptoms and quality of life as well as leiomyoma and uterine size.

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Extracted eligibility criteria

Prior therapy

Cannot have received: surgery or radiologic procedure for leiomyomata

Leiomyomata treated by surgery, radiologic procedure in the last 12 weeks; or plans to undergo any of the above in the next 24 weeks

Cannot have received: GnRH agonist or antagonist

Leiomyomata treated by GRNH agonist or antagonist in the last 12 weeks; or plans to use the above in the next 24 weeks

Cannot have received: aromatase inhibitor (letrozole)

Use of letrozole, other aromatase inhibitor, or selective estrogen receptor modulator (SERM) medications in the past 4 weeks, or existing plans to initiate one of these in the next 24 weeks

Cannot have received: selective estrogen receptor modulator

Use of letrozole, other aromatase inhibitor, or selective estrogen receptor modulator (SERM) medications in the past 4 weeks, or existing plans to initiate one of these in the next 24 weeks

Cannot have received: exogenous estrogen, progestin, or androgen therapy

Use of oral, vaginal, or topical exogenous estrogen, progestin, or androgen therapy in the past 4 weeks; or injectable forms of the above in the past 12 weeks; or plans to initiate any of the above in the next 24 weeks

Cannot have received: medications with potential unsafe interactions with letrozole (methadone, levomethadone, nintedanib, thalidomide)

Use of medications with potential unsafe interactions with letrozole in the past 4 weeks (methadone, levomethadone, nintedanib, thalidomide), or plans to initiate these in the next 24 weeks

Lab requirements

Blood counts

Screening serum hemoglobin <8 g/dL, or history of blood transfusion in the last 12 weeks (indicating severe anemia)

Screening serum hemoglobin <8 g/dL, or history of blood transfusion in the last 12 weeks (indicating severe anemia)

Structured fields extracted by AI. May contain errors — verify against the official protocol.

US trial sites

  • University of California, Los Angeles · Los Angeles, California
  • University of California, San Francisco · San Francisco, California
  • Mayo Clinic · Rochester, Minnesota
  • University of Mississippi Medical Center · Jackson, Mississippi
  • Duke University · Durham, North Carolina

Showing up to 5 US sites. See all sites on ClinicalTrials.gov →

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