Prognostic value of early post-treatment 18F-FDG PET/CT in diffuse large B-cell lymphoma patients receiving chimeric antigen receptor T-cell therapy
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
Abstract Purpose To evaluate the prognostic value of early post-treatment 18 F-FDG PET/CT in diffuse large B-cell lymphoma (DLBCL) patients undergoing chimeric antigen receptor T-cell (CAR-T) therapy. Methods In this retrospective study, 159 patients referred for imaging prior to CAR-T therapy between January 2018 and May 2023 were reviewed. Of those, 51 with both baseline pre-infusion and one-month post-treatment 18 F-FDG PET/CTs were included. 18 F-FDG PET/CT parameters were derived, including standard uptake values (SUVs), metabolic tumour volume (MTV), total lesion glycolysis (TLG), and Dmax. Additionally, the delta changes from the baseline were calculated. Time to progression/death was documented. For progression-free survival (PFS) and overall survival (OS), univariate analysis was performed using the Kaplan-Meier method. The significance of the difference was measured using the Mantel-Cox log-rank test. Significant parameters entered the multiple Cox regression. Results Overall, 51 patients (mean age = 56y) entered the study. All had Deauville scores of 4 (14/51; 28%) or 5 (37/51; 72%) at baseline. At one month, 28% of patients showed a complete metabolic response, while 72% had 18 F-FDG-avid significant residual disease. Investigating those with residual disease, SUVmax, SUVpeak, SUVmax-to-Liver ratio and MTV were significantly lower in the one-month post-treatment scan. For PFS evaluation, serum LDH, one-month post-treatment SUVmax-to-liver ratio, one-month post-treatment TLG, and baseline Dmax entered the multivariate analysis. The one-month post-treatment SUVmax-to-liver ratio (Hazard ratio [HR] = 5.21; p = 0.004) and baseline Dmax (HR = 13.8; p = 0.013) retained significance, being independent predictors of PFS. For OS, serum LDH, delta SUVmean-to-liver ratio, delta percentage TLG, and one-month post-treatment Dmax were included in the multivariate analysis. The delta percentage TLG (HR = 4.37; p = 0.023) remained significant as an independent predictor of OS. Conclusion Early post-treatment 18 F-FDG PET/CT can provide valuable prognostic information for DLBCL patients receiving CAR-T. The most significant predictors of outcomes would be the baseline extent of the disease, one-month post-treatment avidity, and changes in the metabolic burden from baseline.
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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) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| 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