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Extracellular matrix biomarkers of T-cell infiltration and tumor fibrosis predict response to nivolumab ± ipilimumab with SBRT in biliary tract cancer: insights from the CheckPAC trial.

June 11, 2026

BMC Med

Abstract BACKGROUND Biliary tract cancer (BTC) is an uncommon malignancy with limited treatment options and poor prognosis. BTC is typically characterized by a desmoplastic, collagen-rich extracellular matrix (ECM), which has been linked to immune exclusion and therapy resistance. Although immune checkpoint inhibitors (ICI) combined with gemcitabine/cisplatin have become first-line treatment for advanced BTC, durable responses […]

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Collagen turnover biomarkers to predict outcome of patients with biliary cancer.

February 4, 2025

BMC Gastroenterol

Abstract BACKGROUND The collagen-rich tumor stroma plays a crucial role in biliary tract cancer (BTC). Collagen biomarkers of type I collagen (reC1M), type III collagen (PRO-C3), type IV collagen (C4G), type VIII collagen (PRO-C8), type XI collagen (PRO-C11), type XVII collagen (PRO-C17) and type VIII collagen (TUM) may be used as potential non-invasive biomarkers. METHODS […]

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Blood-based tumor fibrosis markers as diagnostic and prognostic biomarkers in patients with biliary tract cancer.

March 1, 2023

Int J Cancer

Abstract Biliary tract cancer (BTC) is characterized by a desmoplastic extracellular matrix (ECM). We tested the diagnostic and prognostic use of seven circulating biomarkers of ECM remodeling: pro-peptides of type III collagen (PRO-C3), VI (PRO-C6) and XI (PRO-C11), matrix metalloprotease (MMP) degraded type III collagen (C3M) and type IV collagen (C4M) fragments, granzyme B degraded […]

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