| Autor: |
Sonia Pernas, Esther Sanfeliu, Guillermo Villacampa, Javier Salvador, Antonia Perelló, Xavier González, Begoña Jiménez, María Merino, Patricia Palacios, Tomás Pascual, Emilio Alba, Lorea Villanueva, Samyukta Chillara, Juan Manuel Ferrero-Cafiero, Patricia Galvan, Aleix Prat, Eva Ciruelos |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
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| Zdroj: |
npj Breast Cancer, Vol 10, Iss 1, Pp 1-8 (2024) |
| Druh dokumentu: |
article |
| ISSN: |
2374-4677 |
| DOI: |
10.1038/s41523-024-00710-x |
| Popis: |
Abstract With the incorporation of cyclin-dependent kinase inhibitors in early breast cancer (BC), a better identification of biomarkers is needed. The PROMETEO II trial aimed to evaluate the antitumor activity of palbociclib plus letrozole and to identify response biomarkers in patients with operable HR+/HER2- BC and residual disease after neoadjuvant chemotherapy (NAC). The primary endpoint was the rate of complete cell cycle arrest (CCCA), centrally determined by Ki67 ≤ 2.7% at surgery. A comprehensive translational analysis was conducted. At surgery, the CCCA rate was 59.1%, with a 44.2% decrease in Ki67 from the end of NAC. Changes in intrinsic subtypes occurred in 48% of patients, with proliferation genes suppressed, and immune genes more upregulated in tumors with CCCA. Overall, 14% of tumors were classified as PD-L1+ after palbociclib. Nine patients experienced grade 3 adverse events (AEs). Palbociclib showed an anti-proliferative effect, with increased immune infiltration in residual tumors with CCCA. Trial registration: Palbociclib Plus Letrozole in Hormone Receptor Positive Residual Disease After Neoadjuvant Chemotherapy (PROMETEO II) ClinicalTrial.gov number NCT04130152. Study registration; October 17, 2019. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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Full text from SpringerLink