Ribociclib plus endocrine remedy affords survival profit for postmenopausal sufferers with metastatic breast most cancers

A research led by researchers from The College of Texas MD Anderson Most cancers Heart confirmed a big total survival profit with ribociclib plus endocrine remedy for postmenopausal sufferers with hormone receptor-positive (HR+) human epidermal development issue receptor 2-negative (HER2-) metastatic breast most cancers. The outcomes have been printed at the moment in The New England Journal of Drugs and have been first reported on the European Society for Medical Oncology (ESMO) Congress 2021.

The randomized Part III MONALEESA-2 trial led by Gabriel Hortobagyi, M.D., professor of Breast Medical Oncology, is the primary demonstration of a survival benefit with a front-line CDK4/6 inhibitor in postmenopausal sufferers with HR+/HER2- superior breast most cancers. The outcomes confirmed a median survival of 63.9 months with front-line ribociclib, a CDK4/6 inhibitor, and the aromatase inhibitor letrozole, in comparison with 51.4 months with hormone remedy alone. The estimated six-year survival price was 44.2% with ribociclib, in contrast with 32% for placebo.

These findings construct on earlier MONALEESA trials that achieved a survival profit with the addition of ribociclib. I’m very inspired that metastatic breast most cancers sufferers might have a remedy choice that extends survival, delays chemotherapy remedy and preserves their high quality of life.”

Gabriel Hortobagyi, M.D., Professor of Breast Medical Oncology

Beforehand reported MD Anderson analysis confirmed that ribociclib and letrozole improved progression-free survival of postmenopausal girls with HR+ metastatic breast most cancers within the MONALEESA-2 trial, whereas the mix reported an improved progression-free and total survival profit in premenopausal sufferers with superior HR+ breast most cancers, in response to outcomes of the MONALEESA-7 trial.

The worldwide double-blind research, MONALEESA-2, enrolled 668 postmenopausal girls with superior breast most cancers at 223 trial websites in 29 nations. They have been randomized to obtain both ribociclib and letrozole, or letrozole and placebo. None had been beforehand handled for his or her superior illness. Trial members have been 82.2% white, 7.6% Asian, 2.5% Black and seven.6% different.

The median follow-up was 79.7 months, and the time to first chemotherapy remedy was 50.6 months for sufferers who obtained ribociclib, in comparison with 38.9 months for placebo.

No new security alerts have been noticed, and antagonistic occasions have been in step with earlier reported Part III MONALEESA trial outcomes.

“Given these outcomes, the mix of a CDK4/6 inhibitor plus an aromatase inhibitor needs to be the usual first-line remedy for almost all of sufferers with superior hormone receptor-positive breast most cancers,” Hortobagyi stated. “These findings have the potential to impression most girls identified with metastatic breast most cancers.”


College of Texas MD Anderson Most cancers Heart

Journal reference:

Hortobagyi, G.N., et al. (2022) Total Survival with Ribociclib plus Letrozole in Superior Breast Most cancers. The New England Journal of Drugs. doi.org/10.1056/NEJMoa2114663.

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