Brain Function in Premenopausal Women Receiving Tamoxifen With or Without Ovarian Function Suppression for Early-Stage Breast Cancer on Clinical Trial IBCSG 24-02
Investigating Cognitive Function for Patients Participating in the SOFT Trial in Selected Centers
Lead SponsorInternational Breast Cancer Study Group
StatusCompleted Results Posted
Indication/ConditionBreast Cancer Fatigue Sleep Disorders
Intervention/Treatmentexemestane triptorelin tamoxifen ...
RATIONALE: Learning about the long-term effects of adjuvant tamoxifen (T), adjuvant tamoxifen with ovarian function suppression (T+OFS), and exemestane with ovarian function suppression (E+ OFS) on brain function may help doctors plan cancer treatment.
PURPOSE: This study is looking at brain function in premenopausal women who are receiving adjuvant tamoxifen (T) alone against those receive adjuvant tamoxifen (T+OFS) or exemestane (E+OFS) with ovarian function suppression (OFS) for early-stage breast cancer on clinical trial IBCSG-2402.
* To evaluate and compare the changes in cognitive function over one year in premenopausal breast cancer patients who receive adjuvant tamoxifen (T) alone against those receive adjuvant tamoxifen (T+OFS) or exemestane (E+OFS) with ovarian function suppression (OFS).
OUTLINE: This is a multicenter study.
Objective cognitive function was measured with the CogState computerized test battery. The CogState battery consists of seven tasks: Detection, Identification, Monitoring, Memory, Learning, International Shopping List Task (ISLT), and ISLT-Delayed Recall. Performance speed is measured for the Detection, Identification and Monitoring tasks and performance accuracy is measured for the Memory, Learning, ISLT, and ISLT-Delayed Recall. Measures of performance speed are normalized using measures of performance accuracy (%) are normalized using arcsine transformation. The main outcome measure is a composite score which is the average of these task scores (after transformation and standardization by age-specific norms). Patients complete these assessments at baseline (i.e. before start of protocol hormonal therapy) and approximately one year after randomization to the parent IBCSG 24-02 (SOFT) study.
Data were collected separately for the T+OFS and E+OFS participants in the parent study, IBCSG 24-02 (SOFT). The sample size for this Co-SOFT substudy was small, so the analysis plan was revised to pre-specify collective analysis for all patients receiving OFS.
Tamoxifen 20mg orally daily for 5 years
Tamoxifen 20mg orally daily for 5 years plus ovarian function suppression (OFS; triptorelin (GnRH analogue) 3.75 mg by im injection q28 days for 5 years; or surgical oophorectomy; or ovarian irradiation)
Exemestane 25mg orally daily for 5 years plus ovarian function suppression (OFS; triptorelin (GnRH analogue) 3.75 mg by im injection q28 days for 5 years; or surgical oophorectomy; or ovarian irradiation)
DISEASE CHARACTERISTICS: Histologically confirmed breast cancer Completely resected disease Registered for clinical trial IBCSG-2402, but not yet started protocol hormonal therapy Has not yet received any of the following adjuvant endocrine therapy, either before or after registration on IBCSG-2402: Tamoxifen, exemestane, or gonadotropin-releasing hormone (GnRH) agonist Ovarian irradiation Bilateral oophorectomy Hormone receptor status: Estrogen and/or progesterone receptor positive Each tumor must be hormone receptor positive PATIENT CHARACTERISTICS: Premenopausal Can speak and read the local language(s) fluently PRIOR CONCURRENT THERAPY: See Disease Characteristics
|Event Type||Organ System||Event Term|
Objective cognitive function measured with CogState, a computerized test battery of 7 tasks: Detection, Identification, Monitoring, Memory, Learning, International Shopping List Task (ISLT) and ISLT-Delayed Recall. Performance speed is measured for Detection/Identification/Monitoring and performance accuracy is measured for Memory/Learning/ISLT/ISLT-Delayed Recall. Performance speed calculated as mean of the log10 transformed reaction time for correct responses (lower score=better); performance accuracy calculated as arcsine transformation of the proportion of correct responses (higher scores=better). Main outcome measure is a composite score (average of task scores after transformation and standardization by age-specific norms). A positive standardized score indicates that a patient performed better than average; a negative standardized score indicates below average results. Patients complete assessments at baseline and 1 year after randomization to parent IBCSG 24-02 (SOFT) study.