Abstract P1-13-07: A phase III study of fulvestrant 500 mg versus 250 mg in postmenopausal Chinese women with advanced breast cancer and disease progression following failure on prior antiestrogen or aromatase inhibitor therapy: Supporting superior clinical benefit for the
Notice bibliographique
Résumé
Abstract Background: In the international Phase III COmparisoN of Faslodex In Recurrent or Metastatic breast cancer (CONFIRM) study, fulvestrant 500 mg was associated with significantly longer progression-free survival (PFS) over the 250 mg dose (hazard ratio [HR] 0.80; 95% confidence interval [CI] 0.68, 0.94; p=0.006) in postmenopausal women with advanced breast cancer (ABC) following failure on prior endocrine therapy. There were no clinically meaningful differences between the treatment groups in terms of the incidence or severity of adverse events. The present study was designed to compare the efficacy and safety of fulvestrant 500 mg versus 250 mg in a Chinese population for registration purposes. Methods: This was a Phase III randomized, double-blind study in a Chinese population (ClinicalTrials.gov: NCT01300351). Postmenopausal women with estrogen receptor positive (ER+) ABC following failure on prior endocrine (antiestrogen [AO] or aromatase inhibitor [AI]) therapy were randomized 1:1 to fulvestrant 500 mg or 250 mg. Patients (pts) were stratified by post-AO/post-AI status and enrollment of post-AI pts was capped at 45%. Primary study endpoint was PFS. Consistency with the global CONFIRM study was to be concluded if the HR for the treatment comparison of PFS was <1 (full analysis set; stratified log-rank test); the study was not powered to detect significant differences between treatment groups. Secondary endpoints included pharmacokinetics, ORR, CBR, DoR, DoCB, safety and tolerability. Results: 221 pts were randomized to fulvestrant 500 mg (n=111) or fulvestrant 250 mg (n=110). 121 pts were in the post-AO subgroup and 100 pts were in the post-AI subgroup. Demographic and baseline characteristics were balanced between fulvestrant 500 mg and fulvestrant 250 mg and comparable with those in the global CONFIRM study. 98% (119/121) in the post-AO subgroup and 92% (92/100) in the post-AI subgroup had adjuvant endocrine therapy, while only 12% (14/121) in the post-AO subgroup and 51% (51/100) in the post-AI subgroup used salvage endocrine therapy. At the time of the primary analysis, 152 progression events (69%) had occurred (post-AO 59% [71/121]; post-AI 81% [81/100]). Median PFS was 8.0 months (m) in the fulvestrant 500 mg group vs 4.0 m in the 250 mg group (HR 0.75; 95% CI 0.54, 1.03; p=0.078); the predefined criterion for consistency with the global CONFIRM study was met. In a predefined subgroup analysis of PFS, the HR for fulvestrant 500 mg vs 250 mg was <1 in both post-AO (median PFS 8.1 m vs 5.6 m; HR 0.86; 95% CI 0.54, 1.37) and post-AI (median PFS 5.8 m vs 2.9 m; HR 0.65; 95% CI 0.42, 1.03) subgroups. Secondary endpoints favored fulvestrant 500 mg over 250 mg, with the exception of median DoR. Safety and tolerability profiles were consistent with the known safety profile of fulvestrant. Conclusions: Data from the present study support the superior clinical benefit of fulvestrant 500 mg vs 250 mg demonstrated in the global CONFIRM study, in postmenopausal Chinese women with ER+ ABC. Hazard ratios favoring fulvestrant 500 mg were observed in both the post-AO and post-AI settings. Citation Format: Zefei Jiang, Qingyuan Zhang, Zhimin Shao, Kunwei Shen, Li Li, Jifeng Feng, Zhongseng Tong, Kangsheng Gu, Xiaojia Wang, Binghe Xu, Guofang Sun, Huifang Chen, Yuri Rukazenkov. A phase III study of fulvestrant 500 mg versus 250 mg in postmenopausal Chinese women with advanced breast cancer and disease progression following failure on prior antiestrogen or aromatase inhibitor therapy: Supporting superior clinical benefit for the [abstract]. In: Proceedings of the Thirty-Seventh Annual CTRC-AACR San Antonio Breast Cancer Symposium: 2014 Dec 9-13; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2015;75(9 Suppl):Abstract nr P1-13-07.
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
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 | 0,002 | 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 | 0,001 |
| 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 ».