Dose dense versus 3 weekly AC during neoadjuvant chemoimmunotherapy for triple negative breast cancer

Autor: Renata Colombo Bonadio, Isadora Martins de Sousa, Flávia Cavalcanti Balint, Ana Carolina Marin Comini, Monique Celeste Tavares, Fernanda Madasi, Jose Bines, Rafael Dal Ponte Ferreira, Daniela Dornelles Rosa, Candice Lima Santos, Zenaide Silva de Souza, Daniele Assad-Suzuki, Júlio Antônio Pereira de Araújo, Débora de Melo Gagliato, Carlos Henrique dos Anjos, Bruna M. Zucchetti, Anezka Ferrari, Mayana Lopes de Brito, Renata Cangussu, Maria Marcela Fernandes Monteiro, Paulo M. Hoff, Laura Testa, Romualdo Barroso-Sousa
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: npj Breast Cancer, Vol 10, Iss 1, Pp 1-7 (2024)
Druh dokumentu: article
ISSN: 2374-4677
DOI: 10.1038/s41523-024-00676-w
Popis: Abstract Neoadjuvant pembrolizumab plus chemotherapy (P + CT) has emerged as a standard of care for stage II-III triple-negative breast cancer (TNBC). However, the best anthracycline-cyclophosphamide (AC) schedule remains to be determined. While the KEYNOTE-522 regimen employs AC every 3 weeks (q3w AC), previous studies have shown overall survival benefits of dose-dense regimens for early-stage breast cancer. The Neo-Real study (GBECAM-0123) is a real-world data effort evaluating patients with TNBC treated with neoadjuvant P + CT in ten cancer centers since July 2020. The objective of this analysis was to evaluate the effectiveness and safety of dose-dense AC (ddAC) versus q3w AC. Among 333 patients included until November 2023, 311 completed neoadjuvant therapy and 279 underwent surgery with pathology reports available; ddAC was used in 58.2% and q3w AC in 41.8% of the cases. Most patients (69.1%) had stage II TNBC. A pCR was observed in 65.4% with ddAC and 58.7% with q3w AC (P = 0.260), while RCB 0-1 occurred in 82.4% and 73.5%, respectively (P = 0.115). Patients with stage III disease had a numerically higher pCR with ddAC (59% vs 40%, P = 0.155), while pCR rates were similar regardless of AC regimen in stage II disease (66.6% vs 64.5%; P = 0.760). While no significant disparities in drug discontinuation was noted, ddAC showed a trend towards higher rates of grade ≥3 AE (40.5% vs. 30.7%, P = 0.092). The Neo-Real study could not rule out a difference between ddAC and q3w AC during neoadjuvant P + CT. The observation of a potentially higher pCR with ddAC in stage III disease warrants further investigation.
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