Ribociclib plus Endocrine Therapy in Early Breast Cancer

Copyright © 2024 Massachusetts Medical Society..

BACKGROUND: Ribociclib has been shown to have a significant overall survival benefit in patients with hormone receptor (HR)-positive, human epidermal growth factor receptor 2 (HER2)-negative advanced breast cancer. Whether this benefit in advanced breast cancer extends to early breast cancer is unclear.

METHODS: In this international, open-label, randomized, phase 3 trial, we randomly assigned patients with HR-positive, HER2-negative early breast cancer in a 1:1 ratio to receive ribociclib (at a dose of 400 mg per day for 3 weeks, followed by 1 week off, for 3 years) plus a nonsteroidal aromatase inhibitor (NSAI; letrozole at a dose of 2.5 mg per day or anastrozole at a dose of 1 mg per day for ≥5 years) or an NSAI alone. Premenopausal women and men also received goserelin every 28 days. Eligible patients had anatomical stage II or III breast cancer. Here we report the results of a prespecified interim analysis of invasive disease-free survival, the primary end point; other efficacy and safety results are also reported. Invasive disease-free survival was evaluated with the use of the Kaplan-Meier method. The statistical comparison was made with the use of a stratified log-rank test, with a protocol-specified stopping boundary of a one-sided P-value threshold of 0.0128 for superior efficacy.

RESULTS: As of the data-cutoff date for this prespecified interim analysis (January 11, 2023), a total of 426 patients had had invasive disease, recurrence, or death. A significant invasive disease-free survival benefit was seen with ribociclib plus an NSAI as compared with an NSAI alone. At 3 years, invasive disease-free survival was 90.4% with ribociclib plus an NSAI and 87.1% with an NSAI alone (hazard ratio for invasive disease, recurrence, or death, 0.75; 95% confidence interval, 0.62 to 0.91; P = 0.003). Secondary end points - distant disease-free survival and recurrence-free survival - also favored ribociclib plus an NSAI. The 3-year regimen of ribociclib at a 400-mg starting dose plus an NSAI was not associated with any new safety signals.

CONCLUSIONS: Ribociclib plus an NSAI significantly improved invasive disease-free survival among patients with HR-positive, HER2-negative stage II or III early breast cancer. (Funded by Novartis; NATALEE ClinicalTrials.gov number, NCT03701334.).

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:390

Enthalten in:

The New England journal of medicine - 390(2024), 12 vom: 21. März, Seite 1080-1091

Sprache:

Englisch

Beteiligte Personen:

Slamon, Dennis [VerfasserIn]
Lipatov, Oleg [VerfasserIn]
Nowecki, Zbigniew [VerfasserIn]
McAndrew, Nicholas [VerfasserIn]
Kukielka-Budny, Bozena [VerfasserIn]
Stroyakovskiy, Daniil [VerfasserIn]
Yardley, Denise A [VerfasserIn]
Huang, Chiun-Sheng [VerfasserIn]
Fasching, Peter A [VerfasserIn]
Crown, John [VerfasserIn]
Bardia, Aditya [VerfasserIn]
Chia, Stephen [VerfasserIn]
Im, Seock-Ah [VerfasserIn]
Ruiz-Borrego, Manuel [VerfasserIn]
Loi, Sherene [VerfasserIn]
Xu, Binghe [VerfasserIn]
Hurvitz, Sara [VerfasserIn]
Barrios, Carlos [VerfasserIn]
Untch, Michael [VerfasserIn]
Moroose, Rebecca [VerfasserIn]
Visco, Frances [VerfasserIn]
Afenjar, Karen [VerfasserIn]
Fresco, Rodrigo [VerfasserIn]
Severin, Irene [VerfasserIn]
Ji, Yan [VerfasserIn]
Ghaznawi, Farhat [VerfasserIn]
Li, Zheng [VerfasserIn]
Zarate, Juan P [VerfasserIn]
Chakravartty, Arunava [VerfasserIn]
Taran, Tetiana [VerfasserIn]
Hortobagyi, Gabriel [VerfasserIn]

Links:

Volltext

Themen:

0F65R8P09N
7LKK855W8I
Aminopyridines
Antineoplastic Agents, Hormonal
Aromatase Inhibitors
Clinical Trial, Phase III
Comparative Study
EC 2.7.10.1
Goserelin
Journal Article
Letrozole
Multicenter Study
Purines
Randomized Controlled Trial
Receptor, ErbB-2
Receptors, Estrogen
Receptors, Progesterone
Ribociclib
TK8ERE8P56

Anmerkungen:

Date Completed 22.03.2024

Date Revised 22.03.2024

published: Print

ClinicalTrials.gov: NCT03701334

Citation Status MEDLINE

doi:

10.1056/NEJMoa2305488

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM369973364