Cognitive Function in Postmenopausal Women With Breast Cancer Receiving Hormone Therapy on Clinical Trial IBCSG-1-98
Breast Cancer, Cognitive/Functional Effects, Fatigue
About this trial
This is an interventional treatment trial for Breast Cancer focused on measuring cognitive/functional effects, fatigue, psychosocial effects of cancer and its treatment, stage I breast cancer, stage II breast cancer, stage IIIA breast cancer
Eligibility Criteria
DISEASE CHARACTERISTICS: Enrolled in protocol IBCSG-1-98 Must be in the fifth year of study treatment (i.e., still receiving tamoxifen or letrozole) No breast cancer recurrence or second malignancy Patients who received 2-4½ years of tamoxifen and have chosen to switch to letrozole to complete 5 years of treatment on protocol IBCSG-1-98 are not eligible Hormone receptor status Estrogen receptor- and/or progesterone receptor-positive tumor PATIENT CHARACTERISTICS: Female Postmenopausal PRIOR CONCURRENT THERAPY: See Disease Characteristics No concurrent hormone replacement therapy
Sites / Locations
- Institute of Oncology at Prince of Wales Hospital
- Peter MacCallum Cancer Centre
- St. Vincent's Hospital - Melbourne
- Cabrini Hospital
- Institut Jules Bordet
- European Institute of Oncology
- Auckland City Hospital
- Universitaetsspital-Basel
- Oncology Institute of Southern Switzerland
- International Breast Cancer Study Group
- Kantonsspital - St. Gallen
- Ninewells Hospital
Arms of the Study
Arm 1
Arm 2
Arm 3
Arm 4
Experimental
Experimental
Experimental
Experimental
Tamoxifen for 5 years
Letrozole for 5 years
Tamoxifen 2 years plus letrozole 3 years
Letrozole for 2 years plus tamoxifen for 3 years
Patients treated with tamoxifen for 5 years after randomization.
Patients treated with letrozole for 5 years after randomization.
Patients treated with tamoxifen for 2 years and afterwards with letrozole for 3 years.
Patients treated with letrozole for 2 years and afterwards with tamoxifen for 3 years.