Helicobacter pylori and immunotherapy for gastrointestinal cancer

© 2024 The Authors..

Helicobacter pylori infection is associated with the risk of gastrointestinal (GI) cancers; however, its impact on immunotherapy for GI cancers remains uncertain. In this study, we included 10,122 patients who underwent 13C-urea breath tests. Among 636 patients with Epstein-Barr virus-negative microsatellite-stable gastric cancer (GC) who were treated with anti-PD-1/PD-L1 therapy, H. pylori-positive patients exhibited significantly longer immune-related progression-free survival (irPFS) compared with H. pylori-negative patients (6.97 months versus 5.03 months, p < 0.001, hazard ratio [HR] 0.76, 95% confidence interval [CI] 0.62-0.95, p = 0.015). Moreover, the H. pylori-positive group demonstrated a trend of 4 months longer median immune-related overall survival (irOS) than the H. pylori-negative group. H. pylori-positive GC displayed higher densities of PD-L1+ cells and nonexhausted CD8+ T cells, indicative of a "hot" tumor microenvironment. Transcriptomic analysis revealed that H. pylori-positive GC shared molecular characteristics similar to those of immunotherapy-sensitive GC. However, H. pylori-positive patients with DNA mismatch repair-deficient (dMMR)/microsatellite instability-high (MSI-H) colorectal adenocarcinoma and esophageal squamous cell carcinoma (ESCC) had shorter irPFS compared with H. pylori-negative patients (16.13 months versus not reached, p = 0.042, HR 2.26, 95% CI 1.13-4.50, p = 0.021 and 5.57 months versus 6.97 months, p = 0.029, HR 1.59, 95% CI 1.14-2.23, p = 0.006, respectively). The difference in irOS between H. pylori-positive and -negative patients had the same trend as that between dMMR/MSI-H colorectal adenocarcinoma and ESCC patients. We also identified a trend of shorter irPFS and irOS in H. pylori-positive liver cancer and pancreatic cancer patients. In summary, our findings supported that H. pylori infection is a beneficial factor for GC immunotherapy by shaping hot tumor microenvironments. However, in dMMR/MSI-H colorectal adenocarcinoma and ESCC patients, H. pylori adversely affects the efficacy of immunotherapy.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:5

Enthalten in:

Innovation (Cambridge (Mass.)) - 5(2024), 2 vom: 04. Feb., Seite 100561

Sprache:

Englisch

Beteiligte Personen:

Jia, Keren [VerfasserIn]
Chen, Yang [VerfasserIn]
Xie, Yi [VerfasserIn]
Wang, Xicheng [VerfasserIn]
Hu, Yajie [VerfasserIn]
Sun, Yu [VerfasserIn]
Cao, Yanshuo [VerfasserIn]
Zhang, Liyan [VerfasserIn]
Wang, Yakun [VerfasserIn]
Wang, Zhenghang [VerfasserIn]
Lu, Zhihao [VerfasserIn]
Li, Jian [VerfasserIn]
Zhang, Xiaotian [VerfasserIn]
Shen, Lin [VerfasserIn]

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Anmerkungen:

Date Revised 22.02.2024

published: Electronic-eCollection

Citation Status PubMed-not-MEDLINE

doi:

10.1016/j.xinn.2023.100561

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM368698017