2026-04-17T20:17:30Zhttps://recercat.cat/oai/request

oai:recercat.cat:2445/2222432025-12-05T00:53:02Zcom_2072_1057col_2072_478916col_2072_478917

00925njm 22002777a 4500 dc Sierra Rodero, Belén author Martínez Toledo, Cristina author Nadal, Ernest author Molina Alejandre, Marta author García Campelo, Rosario author Gil González, Ángeles author Massuti, Bartomeu author García Grande, Aránzazu author Dómine, Manuel author Insa, Amelia author Castro Carpeño, Javier de author Huidobro Vence, Gerardo author Majem, Margarita author Martínez Martí, Alex author Megias Vazquez, Diego author Lobato Alosnos, Daniel Ángel author Collazo-Lorduy, Ana author Calvo, Virginia author Provencio, Mariano author Cruz Bermúdez, Alberto author 2025-07-15T08:24:37Z 2025-07-15T08:24:37Z 2025-06-05 2025-07-10T13:42:52Z Perioperative chemoimmunotherapy has significantly improved survival rates for non-small cell lung cancer (NSCLC). However, current tissue biomarkers remain inadequate, underscoring the need for more sensitive and accessible alternatives to monitor relapse risk. Intratumoral B-cells are increasingly recognized for their role in enhancing immunotherapy outcomes, yet the contribution of peripheral B-cells to immune surveillance remains unexplored. Peripheral B-cell immunophenotypes were analyzed from blood samples (at diagnosis, post-neoadjuvant, and at 6- and 12-months of adjuvant treatment) in 41 stage IIIA NSCLC patients treated with perioperative nivolumab plus chemotherapy, included in the NADIM clinical trial (NCT03081689). Results were correlated with 5-year survival outcomes and validated through unsupervised clustering. An increase in the percentage of total B-cells (CD19+CD20+) and na & iuml;ve B-cells (CD19+CD20+CD24+CD38+CD27-CD10-), along with a reduction in CD20 expression on total B-cells, a decrease in the proportion of memory B-cells (CD19+CD20+CD24+CD38-/lowCD27+) and transitional B-cells (CD19+CD20+CD24++CD38++CD10+), was observed during the time encompassed between the end of neoadjuvant treatment and the posterior 6 months of adjuvant treatment. Higher levels of CD20 expression on total B-cells, along with an increased percentage of memory B-cells, or activated B-cells (CD19+CD20+CD25+), at 6- and 12-months of adjuvant treatment, were associated with increased survival. Conversely, higher levels of a newly described circulating population of CD19+CD20lowCD25lowCD27low B-cells during adjuvant treatment were linked to disease progression. Perioperative nivolumab plus chemotherapy in resectable NSCLC patients induces significant changes in peripheral B-cells. The persistence of circulating memory B-cells during adjuvant treatment might play a crucial role in survival. Cèl·lules B Immunoteràpia B cells Immunotheraphy Peripheral memory B cell population maintenance and long-term survival after perioperative chemoimmunotherapy in NSCLC (NADIM trial)