Letrozole, or CGS 20267, is an oral non-steroidal type II aromatase inhibitor first described in the literature in 1990. It is a third generation aromatase inhibitor like exemestane and anastrozole, meaning it does not significantly affect cortisol, aldosterone, and thyroxine.
Letrozole was granted FDA approval on 25 July 1997.
Letrozole is indicated to treat postmenopausal women with hormone receptor (HR) positive early breast cancer, postmenopausal women with early breast cancer who have periviously been treated with tamoxifen, and postmenopausal women with HR+ or unknown advanced breast cancer. Letrozole, given with ribociclib, is indicated to treat pre, peri, and postmenopausal women with HR+ and human epidermal growth factor 2 (HER2) negative advanced or metastatic breast cancer.
Washington University School of Medicine, Saint Louis, Missouri, United States
PRACS Institute, Ltd., Fargo, North Dakota, United States
PRACS Institute, Ltd., Fargo, North Dakota, United States
Loyola University Medical Center, Maywood, Illinois, United States
Emory University School of Medicine, Atlanta, Georgia, United States
Stanford University Medical Center, Stanford, California, United States
Bushehr university of medical science, Bushehr, Iran, Islamic Republic of
Univ of Chicago, Chicago, Illinois, United States
Mary Crowley Cancer Rsch Ctr, Dallas, Texas, United States
Baylor Sammons Cancer Center, Dallas, Texas, United States
Mills-Peninsula Medical Center, Burlingame, California, United States
Dublin Hematology Oncology Care PC, Dublin, Georgia, United States
Piedmont Fayette Hospital, Fayetteville, Georgia, United States
Vanderbilt-Ingram Cancer Center, Nashville, Tennessee, United States
Massachusetts General Hospital, Dana Farber Cancer Center, Boston, Massachusetts, United States
University of Alabama, Birmingham, Alabama, United States
Novartis Investigative Site, Tel Aviv, Israel
Oncology Care Associates, P.A., Wheaton, Maryland, United States
Presbyterian Hospital Cancer Research, Charlotte, North Carolina, United States
University Of Virginia Health System, Charlottesville, Virginia, United States
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