AUTHOR=Yang Chao-Xu , Pan Yang-Xun , Ye Feng , Zhu Xiao-Dong , Xue Jun , Li Xi , Yuan Zhen-Gang , Zhang Lan , Xu Li , Chen Yong-Jun , Wang Nan-Ya , Sun Hui-Chuan , Liu Xiu-Feng , China Liver Cancer Study Group Young Investigators (CLEAP) TITLE=The pattern of tumor progression on first-line immune checkpoint inhibitor-based systemic therapy for Chinese advanced hepatocellular carcinoma –CLEAP 004 study JOURNAL=Frontiers in Immunology VOLUME=Volume 15 - 2024 YEAR=2024 URL=https://www.frontiersin.org/journals/immunology/articles/10.3389/fimmu.2024.1310239 DOI=10.3389/fimmu.2024.1310239 ISSN=1664-3224 ABSTRACT=For decades, stratification criteria for first-line clinical studies have been highly uniform(1). However, there is no principle or consensus for restratification after systemic treatment progression based on immune checkpoint inhibitors (ICIs). The aim of this study was to assess the patterns of disease progression in patients with advanced hepatocellular carcinoma (HCC) who are not eligible for surgical intervention, following the use of immune checkpoint inhibitors. This is a retrospective study that involved patients with inoperable China liver stage (CNLC) IIIa and/or IIIb. In this investigation of advanced hepatocellular carcinoma among Chinese patients treated with immune checkpoint inhibitors, we identified four distinct progression patterns (p-IIb, p-IIIa, p-IIIb and p-IIIc) that showed significant differences in PPS and OS. These findings demonstrate the heterogeneity of disease progression and prognosis after immunotherapy failure. Further validation in large cohorts is necessary to develop prognostic models that integrate distinct progression patterns to guide subsequent treatment decisions. Additionally, post-immunotherapy progression in patients with AFP levels ≥400ng/mL indicates a shortened median PPS. These findings provide valuable insights for future personalized treatment decisions.