P4-19-02: A Population-Based Study of Contemporary Systemic Therapy for Male Breast Cancer.
Bibliographic record
Abstract
Abstract Purpose: To describe the contemporary utilization, effectiveness and tolerability of tamoxifen, aromatase inhibitors, and trastuzumab in the treatment of early and advanced male breast cancer at a population level in British Columbia. Patients and Methods: Records of 158 consecutive referred cases of invasive male breast cancer diagnosed from January 2000 to March 2010 were analyzed in a population-based cancer program with respect to patient and tumour characteristics, usage of endocrine agents, toxicity and medication adherence, trastuzumab usage and outcome. This group was compared to a population-based random sample of 1000 contemporary female breast cancer patients for prognostic and demographic factors. Survival outcomes were also compared to a cohort of women, matched 2:1 on prognostic and treatment factors. Results: Pathology was most commonly infiltrating ductal carcinoma (94.3%) and estrogen-receptor positive (98.7%). Males were older (median 69.5 years) compared to women (median 60 years). Stage distribution was I (25.3%), II (43.0%), III (24.7%) and IV (7.0%), reflecting more advanced presentation compared to female cases I (43.9%), II (37.9%), III (12.5%) and IV (5.3%). Tamoxifen was prescribed as adjuvant therapy to109 patients, and as palliative therapy to 11. Fourteen (11.7%) patients discontinued tamoxifen due to toxicity. Aromatase inhibitors were prescribed as adjuvant therapy for 16 patients and as palliative therapy for 24; these were discontinued due to toxicity in 5 patients (12.5%). Five of 9 patients known to over-express Her2 were treated with adjuvant chemotherapy with trastuzumab. Overall survival, breast cancer-specific survival and progression-free survival at 5 years were 72.4%, 85.5% and 79.7%, respectively. There was no statistical difference in outcomes compared to the matched female cases. Conclusions: In this large population-based study of contemporary systemic therapy for male breast cancer, outcomes appear to be similar to those of women with the same diagnosis. Side effect profiles, tolerance, adherence and outcomes after tamoxifen, aromatase inhibitors and trastuzumab appear to be similar in men compared to that described in the literature for women. Citation Information: Cancer Res 2011;71(24 Suppl):Abstract nr P4-19-02.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.002 | 0.001 |
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 source (direct Gemma or distilled Codex), 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".