Seven-year overall survival analysis from ECHELON-1 study of A+AVD versus ABVD in patients with previously untreated stage III/IV classical Hodgkin lymphoma.
Bibliographic record
Abstract
7053 Background: In ECHELON-1 (NCT01712490), 6-year follow-up (FU) analyses demonstrated significant improvements in overall survival (OS) and progression-free survival (PFS) with A+AVD (brentuximab vedotin plus doxorubicin, vinblastine, and dacarbazine) versus ABVD (doxorubicin, bleomycin, vinblastine, and dacarbazine), with a comparable safety profile. Here, we report data at 7-year median FU. Methods: Analyses of OS and PFS per investigator were conducted in the intent-to-treat (ITT) population (data cut-off March 11, 2023). Patients (pts) were randomized 1:1 to receive ≤6 cycles of A+AVD (n=664) or ABVD (n=670) on days 1 and 15, every 28 days. PET scan after cycle 2 (PET2) evaluation was mandatory. Long-term safety outcomes in the safety population included resolution or improvement of peripheral neuropathy (PN), second malignancies, and pregnancies. Results: At median FU of 89.3 months (95% CI 87.0–90.2), 7-year OS rates were 93.5% (95% CI 91.1–95.2) with A+AVD and 88.8% (95% CI 85.8–91.1) with ABVD; OS favored A+AVD over ABVD (HR 0.62; 95% CI 0.42–0.90; p=0.011). Subgroup analyses showed consistent OS benefit for A+AVD, including in the age <40 years and Stage IV disease subgroups (Table). 7-year PFS rates with A+AVD vs ABVD were 82.3% (95% CI 79.1–85.0) vs 74.5% (95% CI 70.8–77.7; HR 0.68 [95% CI 0.53–0.86]; p=0.001). PN improved/resolved in most pts at last FU (A+AVD: 86%; ABVD: 87%). Median (range) time to complete resolution of PN (A+AVD vs ABVD) was 16 (0–373) vs 10 (0–343) weeks; median (range) time to improvement was 42 (2–182) vs 19 (15–142) weeks. PN was ongoing in 28% (4% grade ≥3) of A+AVD and 20% (1% grade ≥3) of ABVD pts. Second malignancies were reported in 5% of A+AVD and 6% of ABVD pts. Pts and their partners reported 84/92 livebirths/pregnancies with A+AVD and 59/73 with ABVD; no stillbirths were recorded. Conclusions: At 7-year median FU, pts with stage III/IV cHL who received A+AVD showed a sustained PFS and OS benefit vs ABVD, with PFS rates indicating potential curability. The safety profile in pts treated with A+AVD showed no new safety signals at 7 years. Clinical trial information: NCT01712490 . [Table: see text]
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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 | 0.003 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.002 | 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".