Loading
This study compares tamoxifen and letrozole during ovarian stimulation before cancer treatment. It asks which approach produces more mature eggs for fertility preservation.
This study compares tamoxifen and letrozole during ovarian stimulation before cancer treatment. It asks which approach produces more mature eggs for fertility preservation.
Interventional study registered as NCT03011684, sponsored by University of California, San Francisco. Registry phase: 3. Registry enrollment is 309 participants (estimated). Registry status checked October 10, 2026: recruiting. UCSF lists this study as open to eligible people; local availability and overall registry status are separate. See the registry for full eligibility and current sites.
The full inclusion and exclusion criteria are on the registry record. Read 2026-10-10. Recruiting overall does not mean a particular site is open; ask the study team.
ClinicalTrials.gov data courtesy of the US National Library of Medicine.
Shares Letrozole (and other aromatase inhibitors), Tamoxifen, UCSF Helen Diller Family Comprehensive Cancer Center, Breast cancer (all types) and the tags ucsf-breast-coverage, interventional.
Shares Letrozole (and other aromatase inhibitors), Tamoxifen, UCSF Helen Diller Family Comprehensive Cancer Center, Breast cancer (all types) and the tags ucsf-breast-coverage, interventional.
Shares Letrozole (and other aromatase inhibitors), Tamoxifen, UCSF Helen Diller Family Comprehensive Cancer Center, Breast cancer (all types) and the tags ucsf-breast-coverage, interventional.
Shares UCSF Helen Diller Family Comprehensive Cancer Center, Breast cancer (all types) and the tags ucsf-breast-coverage, interventional.
Shares UCSF Helen Diller Family Comprehensive Cancer Center, Breast cancer (all types) and the tags ucsf-breast-coverage, interventional.
Shares UCSF Helen Diller Family Comprehensive Cancer Center, Breast cancer (all types) and the tags ucsf-breast-coverage, interventional.
Shares UCSF Helen Diller Family Comprehensive Cancer Center, Breast cancer (all types) and the tags ucsf-breast-coverage, interventional.
Shares UCSF Helen Diller Family Comprehensive Cancer Center, Breast cancer (all types) and the tags ucsf-breast-coverage, interventional.
Every source this page cites, grouped by who published it. Grouping is read from the web address, not assigned by hand.
A source that has moved or gone is reported by the weekly link check. /audit/