Survival outcomes for patients with extensive stage small cell lung cancer (ES-SCLC) treated with consolidative thoracic radiation therapy (cTRT) and chemoimmunotherapy (CIT): A population level study.
Notice bibliographique
Résumé
e20126 Background: CIT has been adopted as the first-line treatment for ES-SCLC, supported by clinical trials which showed significant survival benefits. A synergistic effect of cTRT + CIT is theorized to enhance survival outcomes, but real-world data supporting the routine use of cTRT + CIT is limited. This study aims to investigate the safety and effectiveness of patients with ES-SCLC treated with CIT + cTRT in routine clinical practice. Methods: We identified a cohort of ES-SCLC patients treated with CIT + cTRT, with treatment initiated from Sept 2019 to Nov 2023, using Glans-Look Research Database, a province wide lung cancer registry, from which baseline demographic, diagnostic, treatment, and outcome information were derived. The last day of follow up was Dec 10, 2024. Descriptive statistics and survival analyses were generated. Results: 50 patients were identified, median age at diagnosis was 68. At CIT initiation, 34 (68%) patients had ECOG ≤ 1 and 38 (76%) had baseline brain metastasis. 35 (70%) patients received durvalumab, 11 (22%) atezolizumab, and 4 (8%) alternate immune checkpoint inhibitors (ICI). All CIT used ICI with platinum-based chemotherapy and etoposide. The median time from CIT initiation to cTRT was 4.7 months. The total dose of cTRT varied, with most patients (n= 23) receiving 30Gy in 10 fractions. 4 patients received doses above 30Gy (40-60 Gy in 8-20 fractions) and 23 received doses below 30Gy (22.5-25 Gy in 5-10 fractions). The incidence of post-cTRT pneumonitis was n=9 (18%), induced by radiation (n=4), ICI (n=3) or mixed etiology (n=2); the majority were low grade (n=8; grade 1-2) and managed with outpatient steroids, but 1 incidence of grade 3 pneumonitis required hospitalization. 20 (40%) patients experienced clinically significant CIT-induced adverse events (AEs) requiring treatment modification/interruption. Serious AE (≥ grade 3) included myelosuppression (n=6), cardiac (n=1), gastrointestinal toxicity (n=5), sepsis (n=1), and paraparesis (n=1). The median overall survival (OS) and progression-free survival (PFS) post-CIT initiation were 21.3 and 11.7 months, respectively. The presence of baseline brain metastasis was associated with both worse OS (HR = 3.0, 95% CI 1.2-7.2, p = 0.015) and PFS (HR = 2.9, 95% CI 1.3-6.4, p = 0.008). The type of ICI, atezolizumab vs durvalumab, did not significantly impact OS (HR = 0.85, 95% CI 0.36-2, p = 0.7) or PFS (HR = 0.95, 95% CI 0.44-2.1, p = 0.9). Conclusions: Our study observed a high incidence of pneumonitis (18%) in this largest North American cohort of real-life ES-SCLC patients receiving CIT + cTRT. Pivotal trials of CIT did not permit cTRT and had reported pneumonitis rates of < 2 %. Most of our pneumonitis cases were low-grade and did not require hospitalization. Overall, CIT + cTRT appears to be well tolerated in this cohort of real world patients.
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Comment cette classification a été obtenuedéplier
Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,001 | 0,001 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,002 | 0,000 |
| Bibliométrie | 0,000 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,001 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule tête enseignante, pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».