Zoledronic Acid and Survival in Breast Cancer Patients with Bone Metastases and Elevated Markers of Osteoclast Activity
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
OBJECTIVE: Most breast cancer patients with bone metastases will receive bisphosphonate treatment. This post hoc analysis investigated whether early normalization of urinary N-telopeptide of type I collagen (NTX) levels during bisphosphonate therapy correlates with a long-term reduction in skeletal-related event (SRE) risk and mortality in patients with breast cancer. METHODS: This was a retrospective subset analysis of a phase III randomized trial comparing i.v. zoledronic acid with pamidronate treatment in patients with bone metastases from breast cancer or multiple myeloma. Patients with breast cancer who had NTX assessments at baseline and at months 1 and 3 (n = 342) were classified as normal (NTX < 64 nmol/mmol creatinine) or elevated (NTX > or = 64 nmol/mmol creatinine). The relative risk for an SRE or death was estimated with Cox regression models. RESULTS: Among the 328 evaluable patients treated with zoledronic acid, 196 patients (59.7%) had elevated baseline NTX, with 149 of those patients (76.0%) having normalized NTX levels and 31 patients (15.8%) having persistently elevated NTX levels at 3 months. The normalized NTX group had significantly lower risks for a first SRE, a first fracture or surgery to bone, or death than the group that had persistently elevated NTX levels. CONCLUSIONS: These results suggest that early normalization of elevated baseline NTX while receiving zoledronic acid is associated with longer event-free and overall survival times compared with persistently elevated NTX. Further analyses in cancer patients with elevated marker levels are warranted to confirm the implications of these findings.
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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) | 0.000 | 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 it