Tamoxifen in Treating Women With High-Risk Breast Cancer
Double-Blind Randomized Trial of Tamoxifen Versus Placebo in Patients With Node Positive or High Risk Node Negative Breast Cancer Who Have Completed CMF, CEF, or AC Adjuvant Chemotherapy
4 other identifiers
interventional
672
1 country
48
Brief Summary
RATIONALE: Estrogen can stimulate the growth of breast cancer cells. Hormone therapy using tamoxifen may fight breast cancer by blocking the uptake of estrogen. Chemotherapy uses different ways to stop tumor cells from dividing so they stop growing or die. PURPOSE: Phase III trial to study the effectiveness of tamoxifen following surgery and chemotherapy in treating women who have stage I breast cancer at high risk of recurrence or stage II or stage III breast cancer.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P50-P75 for phase_3 breast-cancer
Started Jul 1993
Longer than P75 for phase_3 breast-cancer
48 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
Study Start
First participant enrolled
July 20, 1993
CompletedFirst Submitted
Initial submission to the registry
November 1, 1999
CompletedFirst Posted
Study publicly available on registry
July 29, 2004
CompletedPrimary Completion
Last participant's last visit for primary outcome
March 7, 2007
CompletedStudy Completion
Last participant's last visit for all outcomes
January 11, 2011
CompletedApril 1, 2020
March 1, 2020
13.6 years
November 1, 1999
March 30, 2020
Conditions
Keywords
Interventions
Eligibility Criteria
Contact the study team to discuss eligibility requirements. They can help determine if this study is right for you.
Sponsors & Collaborators
Study Sites (48)
Dr. H. Bliss Murphy Cancer Centre
St. John's, Newfoundland and Labrador, AIB 3V6, Canada
The Royal Victoria Hospital
Barrie, L4M 6M2, Canada
William Osler Health Centre, Brampton Memorial
Brampton, L6R 3J7, Canada
Tom Baker Cancer Centre
Calgary, T2N 4N2, Canada
PEI Cancer Treatment Centre,Queen Elizabeth Hospital
Charlottetown, C1A 8T5, Canada
Cross Cancer Institute
Edmonton, T6G 1Z2, Canada
Regional Cancer Program of the Hopital Regional
Greater Sudbury, P3E 5J1, Canada
QEII Health Sciences Center
Halifax, B3H 1V7, Canada
Juravinski Cancer Centre at Hamilton Health Sciences
Hamilton, L8V 5C2, Canada
Centre Hospitalier Regional de Lanaudiere
Joliette, J6E 6J2, Canada
Cancer Centre of Southeastern Ontario at Kingston
Kingston, K7L 5P9, Canada
L'Hotel-Dieu de Levis
Lévis, G6V 3Z1, Canada
London Regional Cancer Program
London, N6A 4L6, Canada
Credit Valley Hospital
Mississauga, L5M 2N1, Canada
CHUM - Hopital Notre-Dame
Montreal, H2L 4M1, Canada
McGill University - Dept. Oncology
Montreal, H2W 1S6, Canada
CHUM - Hotel Dieu du Montreal
Montreal, H2W 1T8, Canada
CHUM - Pavillon Saint-Luc
Montreal, H3X 3J4, Canada
Stronach Regional Health Centre at Southlake
Newmarket, L3Y 2P9, Canada
Lakeridge Health Oshawa
Oshawa, L1G 2B9, Canada
Ottawa Health Research Institute - General Division
Ottawa, K1H 8L6, Canada
Penticton Regional Hospital
Penticton, V2A 3G6, Canada
Peterborough Regional Health Centre
Peterborough, K9H 7B6, Canada
CHUQ-Pavillon Hotel-Dieu de Quebec
Québec, G1R 2J6, Canada
CHA-Hopital Du St-Sacrement
Québec, G1S 4L8, Canada
University Institute of Cardiology and
Québec, G1V 4G5, Canada
Allan Blair Cancer Centre
Regina, S4T 7T1, Canada
Atlantic Health Sciences Corporation
Saint John, E2L 4L2, Canada
Saskatoon Cancer Centre
Saskatoon, S7N 4H4, Canada
Algoma District Cancer Program
Sault Ste. Marie, P6A 2C4, Canada
Centre hospitalier universitaire de Sherbrooke
Sherbrooke, J1H 5N4, Canada
Niagara Health System
St. Catharines, L2R 7C6, Canada
BCCA - Fraser Valley Cancer Centre
Surrey, V3V 1Z2, Canada
Thunder Bay Regional Health Science Centre
Thunder Bay, P7B 6V4, Canada
Toronto East General Hospital
Toronto, M4C 3E7, Canada
Odette Cancer Centre
Toronto, M4N 3M5, Canada
St. Michael's Hospital
Toronto, M5B 1W8, Canada
Mount Sinai Hospital
Toronto, M5G 1X5, Canada
Univ. Health Network-The Toronto General Hospital
Toronto, M5G 2C4, Canada
Univ. Health Network-Princess Margaret Hospital
Toronto, M5G 2M9, Canada
Women's College Hospital
Toronto, M5S 1B2, Canada
St. Joseph's Health Centre
Toronto, M6R 1B5, Canada
Trillium Health Centre - West Toronto
Toronto, M9C 1A5, Canada
Humber River Regional Hospital
Toronto, M9N 1N8, Canada
BCCA - Vancouver Cancer Centre
Vancouver, V5Z 4E6, Canada
BCCA - Vancouver Island Cancer Centre
Victoria, V8R 6V5, Canada
Windsor Regional Cancer Centre
Windsor, N8W 2X3, Canada
CancerCare Manitoba
Winnipeg, R3E 0V9, Canada
Related Publications (2)
Bramwell VHC, Pritchard KI, Tu D, et al.: How compliant are patients with oral hormonal therapies? Data from a randomized, placebo controlled study of tamoxifen after adjuvant chemotherapy in premenopausal women with early breast cancer (NCIC CTG MA.12). [Abstract] Breast Cancer Res Treat 106 (1): A-3055, 2007.
RESULTBramwell VH, Pritchard KI, Tu D, et al.: Tamoxifen (T) compared to placebo (P), after adjuvant chemotherapy (CT), in premenopausal women with early breast cancer (EBC): interim results of NCIC-CTG MA.12. [Abstract] J Clin Oncol 25 (Suppl 18): A-547, 2007.
RESULT
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Intervention Hierarchy (Ancestors)
Study Officials
- STUDY CHAIR
Vivien HC Bramwell, MB, BS, PhD, FRCP
London Health Sciences Centre
Study Design
- Study Type
- interventional
- Phase
- phase 3
- Allocation
- RANDOMIZED
- Masking
- TRIPLE
- Who Masked
- PARTICIPANT, CARE PROVIDER, INVESTIGATOR
- Purpose
- TREATMENT
- Intervention Model
- PARALLEL
- Sponsor Type
- NETWORK
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
November 1, 1999
First Posted
July 29, 2004
Study Start
July 20, 1993
Primary Completion
March 7, 2007
Study Completion
January 11, 2011
Last Updated
April 1, 2020
Record last verified: 2020-03
Data Sharing
- IPD Sharing
- Will not share