Effect of low-dose tamoxifen on benign gynecological and breast conditions in a phase III trial in non-invasive breast cancer
- Alessio Carbone 1, Martino Oliva 1, Matteo Puntoni 2, Aliana Guerrieri-Gonzaga 3, Irene Maria Briata 1, Matteo Lazzeroni 3, Davide Serrano 3, Livia Giordano 4, Maria Digennaro 5, Laura Cortesi 6, Francesco Millo 7, Katia Cagossi 8, Giuseppe Aprile 9, Patrizia Serra 10, Elisa Gallerani 11, Bernardo Bonanni 3, Andrea DeCensi 1
- 1EO Ospedali Galliera, Genoa, Italy.
- 2Clinical & Epidemiological Research Unit, University Hospital of Parma, Italy.
- 3IEO, European Institute of Oncology IRCCS, Milan, Italy.
- 4Azienda Ospedaliera-Universitaria Città della Salute e della Scienza, Torino, Italy.
- 5IRCCS, Istituto Tumori "Giovanni Paolo II", Bari, Italy.
- 6Azienda Ospedaliera-Universitaria Policlinico di Modena, Modena, Italy.
- 7Ospedali Riuniti ASL AL-Ospedale SS. Antonio e Margherita, Tortona, AL, Italy, ().
- 8Division of Medical Oncology, "B.Ramazzini" Hospital, Carpi.
- 9Department of Oncology, San Bortolo General Hospital, ULSS8 Berica, Vicenza.
- 10IRCCS Istituto Romagnolo per lo Studio dei Tumori "Dino Amadori"-IRST S.r.l., Meldola, FC, Italy.
- 11Aziende Socio Sanitarie Territoriale dei Sette Laghi, Varese, Italy.
- 0EO Ospedali Galliera, Genoa, Italy.
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View abstract on PubMed
Summary
This summary is machine-generated.Low-dose tamoxifen (5mg/day) significantly reduces breast cancer recurrence with minimal toxicity over 10 years. Benign gynecological and breast events were similar to placebo, reinforcing its favorable safety profile.
Area Of Science
- Oncology
- Pharmacology
- Clinical Trials
Background
- Tamoxifen is effective for breast cancer prevention but limited by side effects.
- A previous phase III trial demonstrated low-dose tamoxifen (5 mg/day) efficacy in reducing recurrence with minimal toxicity.
Purpose Of The Study
- To evaluate the long-term (10-year) safety and incidence of benign gynecological and breast events associated with low-dose tamoxifen therapy for breast cancer prevention.
Main Methods
- A 10-year follow-up of a phase III trial comparing low-dose tamoxifen (5 mg/day) against a placebo.
- Systematic monitoring and reporting of benign gynecological events (uterine, ovarian) and breast events.
Main Results
- No significant differences in benign gynecological or breast events were observed between the low-dose tamoxifen and placebo groups after 10 years.
- The uterus was the most frequently affected site, with similar rates of endometrial polyps in both arms.
- Endometrial thickness remained stable in premenopausal women and showed a minimal, non-clinically significant increase in postmenopausal women on low-dose tamoxifen.
Conclusions
- Low-dose tamoxifen exhibits a favorable long-term safety profile for breast cancer prevention.
- The incidence of benign events with low-dose tamoxifen is lower compared to standard-dose tamoxifen.
- Low-dose tamoxifen represents a safe and effective option for breast cancer risk reduction.
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