Conditional survival of patients with metastatic renal-cell carcinoma treated with VEGF-targeted therapy: a population-based study.
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Notice bibliographique
Résumé
BACKGROUND: The advent of targeted therapies in the past 7 years has extended median survival for metastatic renal-cell carcinoma. This improvement in clinical outcome has created a need for new, more accurate prognostic measures. We assessed the use of conditional survival--a measure that accounts for elapsed time since treatment initiation--for prognostication in patients with metastatic renal-cell carcinoma treated with first-line VEGF-targeted therapies.\n\nMETHODS: We obtained data for patients with metastatic renal-cell carcinoma who were treated with a first-line VEGF-targeted therapy between April 7, 2003, and Oct 12, 2010, from our large multi-institutional International mRCC Database Consortium (centres in Canada, the USA, Singapore, Denmark, and South Korea). All histologies, performance statuses, and prognostic risk groups were included. The primary outcome was 2-year conditional survival, defined as the probability of surviving an additional 2 years from a given timepoint since the start of targeted therapy. Secondary analyses included 1-year and 3-year conditional survival, along with stratification of patients by Heng prognostic risk criteria and Karnofsky performance score, and conditional survival based on length of time on therapy. We used the Kaplan-Meier method and a landmark analysis to calculate conditional survival.\n\nFINDINGS: In the 1673 patients analysed, median follow-up for alive patients was 20쨌1 months (IQR 9쨌0-34쨌4). We recorded an increase in the 2-year conditional survival probability from 44% (95% CI 41-47) at 0 months to 51% (46-55) at 18 months since beginning targeted therapy. When stratified by the Heng prognostic risk criteria defined at therapy initiation, 2-year conditional survival changed little in the favourable and intermediate groups, but in the poor-risk group, 2-year conditional survival improved from 11% (8-15) at 0 months to 33% (18-48) after 18 months. When conditioned on time on targeted therapy from 0 months to 18 months, 2-year conditional survival improved from 44% (41-47) to 68% (60-75) in the overall population and from 74% (68-79) to 90% (77-96) in the favourable group, 49% (45-53) to 57% (45-67) in the intermediate group, and 11% (8-15) to 73% (43-89) in the poor risk group.\n\nINTERPRETATION: Conditional survival is a clinically useful prediction measure that adjusts prognosis of patients with metastatic renal-cell carcinoma on the basis of survival since treatment initiation or therapy duration. Conditional survival might be especially relevant to adjust prognosis for poor-risk patients.\n\nFUNDING: The Trust Family Fund for Kidney Cancer Research.
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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 | 0,000 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,001 | 0,000 |
| Bibliométrie | 0,000 | 0,001 |
| 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 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,001 | 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 découle