Octamer-binding Transcription Factor 4-positive Circulating Tumor Cell Predicts Worse Treatment Response and Survival in Advanced Cholangiocarcinoma Patients Who Receive Immune Checkpoint Inhibitors Treatment
Overview
Oncology
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Background: Octamer-binding transcription factor 4-positive circulating tumor cell (OCT4CTC) exhibits high stemness and invasive potential, which may influence the efficacy of immune checkpoint inhibitors (ICI). This study aimed to assess the prognostic role of OCT4CTC in advanced cholangiocarcinoma (CCA) patients who received ICI treatment.
Methods: In total, 40 advanced CCA patients who received ICI treatment were included, and CTC and OCT4 counts were detected via a Canpatrol system and an RNA in situ hybridization method before ICI treatment. Patients were subsequently divided into none CTC, OCT4CTC, and OCT4CTC groups. Patients were followed up for a median of 10.4 months.
Results: The percentages of patients in none CTC, OCT4CTC, and OCT4CTC groups were 25.0%, 30.0%, and 45.0%, respectively. The proportion of patients with lymph node metastasis was highest in OCT4CTC group, followed by none CTC group, and lowest in OCT4CTC group (P = 0.025). The objective response rate (ORR) was lowest in OCT4CTC group, moderate in OCT4CTC group, and highest in none CTC group (P = 0.009), while disease control rate was not different among three groups (P = 0.293). In addition, progression-free survival (PFS) (P < 0.001) and overall survival (OS) (P = 0.001) were shorter in the OCT4CTC group than in none CTC & OCT4CTC group. Moreover, OCT4CTC (versus none CTC) was independently linked with poorer PFS [hazard ratio (HR) = 6.752, P = 0.001] and OS (HR = 6.674, P = 0.003) in advanced CCA patients.
Conclusion: OCT4CTC relates to lymph node metastasis and shows a good predictive value for poor treatment response and survival in advanced CCA patients who receive ICI treatment.
Focusing on the Immune Cells: Recent Advances in Immunotherapy for Biliary Tract Cancer.
Ni L, Xu J, Li Q, Ge X, Wang F, Deng X Cancer Manag Res. 2024; 16:941-963.
PMID: 39099760 PMC: 11296367. DOI: 10.2147/CMAR.S474348.