The effect of melatonin on appetite and other symptoms in patients with advanced cancer and cachexia: A double-blind placebo-controlled trial.
Bibliographic record
Abstract
9062 Background: Patients with advanced cancer experience anorexia and weight loss which impairs their quality of life. Prior studies suggest melatonin, a frequently used integrative medicine may attenuate weight loss, anorexia, fatigue, and depression. These studies were limited by a lack of blinding and absence of placebo controls. The primary objective of this study was to compare melatonin to placebo for appetite in patients with cachexia. Methods: A randomized, double-blind, 28 day trial of melatonin 20mg vs. placebo in patients with advanced lung or gastrointestinal cancer, appetite scores >3 on a 0 to 10 scale (10 = worst appetite) and a history of weight loss ≥ 5% within 6 months. Patients unable to maintain oral intake, thyroid or adrenal dysfunction, or with a karnofsky <40 were excluded from the study. The assessments included weight, symptom severity by Edmonton Symptom Assessment Scale (ESAS) and quality of life by the Functional Assessment of Anorexia/Cachexia Therapy (FAACT).Differences between groups from baseline to day 28 were analyzed using one-sided two sample t tests (appetite, pain and well-being) or Wilcoxon two-sample tests for the other variables. Interim analysis at half point had a Lan-DeMets monitoring boundary with an O’Brien-Fleming stopping rule. The decision boundaries for the interim test was to accept the null hypothesis of no treatment difference (futility) if the test statistic Z < 0.39 (p ≥ 0.348). Results: After interim analysis of 48 patients, the study was closed by the Data Safety Monitoring Board for futility. There were no significant differences between groups in appetite (p=0.78), weight (p= 0.17), FAACT score (p=0.95), insomnia (p=0.62) or other symptoms measured by the ESAS from baseline to day 28.No significant toxicities were observed. Conclusions: In cachectic patients with advanced cancer, 20mg oral Melatonin at night does not improve appetite, weight or quality of life compared to placebo.
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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 | 0.002 | 0.002 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.005 | 0.002 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.003 | 0.002 |
| Insufficient payload (model declined to judge) | 0.007 | 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".