Correlation between hemodynamic parameters and response to high-dose interleukin-2 in metastatic melanoma
Bibliographic record
Abstract
18012 Background: A direct correlation between the levels of hypotension during IL-2 treatment and response in melanoma has not yet been demonstrated, although both have been correlated with higher IL-2 doses and production of nitric oxide. Methods: A retrospective study analyzed the association between response to IL-2 and systolic, diastolic, mean blood pressure (BP), and heart rate (HR) at baseline and during treatment, by using the t-test. Further, same comparison was performed after BP was corrected for the amount of neosynephrine (neo) utilized during IL-2 treatment (subtracting the raise in BP produced by neo using individual patient coefficients). 22 patients (13 females, 9 males) with a median age of 54 years (range 36–71) received a total of 26 courses of IL-2 (between 2001–2005). Median number of prior treatments was 2.5 (range 0–5). Outcomes were divided in (A) responders (1CR, 3PRs and 4SDs), and (B) non-responders (18PD). Results: When adjusting for the effects of neo, the corrected mean BP during treatment was significantly lower in (A) compared to (B) (52.17 vs 64.34 mmHg, P = 0.018; mean difference −12.17, 95% CI −22.06 to −2.27). Similarly, the decrease in corrected mean blood pressure from baseline was greater in (A) (−34.89 vs −20.67 mmHg, P = 0.003; mean difference −14.22, 95% CI −23.09 to −5.37). A trend towards statistical significance was recorded for the variation in uncorrected mean BP (17.86 vs. 23.22 mmHg, P = 0.085; mean difference −5.36, 95% CI −11.53 to 0.80). Separate analysis demonstrated a significant drop in both systolic (−17.85 mmHg, P = 0.009; 95% −30.77 to −4.91) and diastolic (−12.05 mmHg, P = 0.01; 95% CI −21.02 to −3.07) corrected BP in (A) vs. (B), but no significant difference for either uncorrected parameters. No correlation between response and the HR, number of IL-2 doses or total quantity of neo was observed. Conclusions: Uncorrected variation in mean BP shows a trend towards significance in predicting response to IL-2. However, corrected mean, systolic and diastolic BP correlate closely with response to treatment. Implications of this association may reside in better outcomes for an intensive IL-2 treatment, with aggressive pressor support. A common pathogenetic basis for response to IL-2 and induction of hypotension is possible. No significant financial relationships to disclose.
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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 | 0.000 | 0.002 |
| 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) | 0.001 | 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 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".