Toxicities and adherence rates of hormone treatment in male breast cancer patients treated at a tertiary care center
Bibliographic record
Abstract
e11613 Background: Male breast cancer (BC) comprises approximately 1% of all breast cancer cases, and over 80% of male BC tumours express the estrogen receptor (ER). Male BC patients (pts) are often offered hormonal treatment (HT) with tamoxifen (T), or more recently aromatase inhibitors (AI's). There is a paucity of information in the literature on the toxicities (Tx) and adherence rates of HT in this population. Methods: We conducted a retrospective chart review of 24 pts diagnosed with male BC at the Ottawa Regional Cancer Centre from 1986–2003. Data collected included pt age, ER status, progesterone receptor (PR) status, systemic chemotherapy, HT, and Tx of treatment. Results: Median age of 24 male BC pts was 70.0 years (r: 46–83 years). The majority (16/24) of pts had ER/PR testing: 12 (75.0%) ER/PR +, 1 (6.3%) ER +/PR-, 2 (12.5%) ER +/PR unknown, and 1 (6.3%) ER/PR-. Of the 15 pts who were ER +, 13 received T and 5 received anastrozole (A) monotherapy during their treatment. One ER - pt received adjuvant T. Three pts with ER status unknown received T. Median duration of treatment with T (17 pts) was 38.0 months (r: 2–79 months). Hot flashes (23.5 %) was the most common reported Tx. Decreased libido, weight gain, rash, and malaise were reported in 2 pts (11.8%) each. Increased liver enzymes, pulmonary embolism, and erectile dysfunction were reported in 1 pt (5.9%) each. Five pts (29.4%) terminated treatment early due to T toxicity (median treatment 15 months; r: 2–54 months). Five pts were treated with A (median 10 months; r: 3–60 months), 4 of whom received prior T treatment. One pt reported loss of libido, and 1 significant depression /suicidal ideation requiring psychiatric treatment. Conclusions: This study provides contemporary data on toxicities and adherence rates of HT in male BC pts in a non-clinical trial setting. Approximately 30 % of male BC pts discontinued T therapy due to Tx, potentially having a negative impact on clinical outcome. Future studies will examine differences in adherence rates and outcomes between T and A in male BC pts. No significant financial relationships to disclose.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".