Molecular and radiopathologic spectrum between HCC and intrahepatic cholangiocarcinoma

  • Youngsic Jeon
    Department of Pathology, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, Republic of Korea
  • So Mee Kwon
    Department of Physiology, Ajou University School of Medicine, Suwon, Republic of Korea
  • Hyungjin Rhee
    Department of Radiology, Yonsei University College of Medicine, Seoul, Republic of Korea
  • Jeong Eun Yoo
    Department of Pathology, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, Republic of Korea
  • Taek Chung
    Department of Biomedical Systems Informatics, Yonsei University College of Medicine, Seoul, Republic of Korea
  • Hyun Goo Woo
    Department of Physiology, Ajou University School of Medicine, Suwon, Republic of Korea
  • Young Nyun Park
    Department of Pathology, Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, Republic of Korea

抄録

<jats:sec> <jats:title>Background and Aims:</jats:title> <jats:p>Primary liver cancers (LCs), including HCC and intrahepatic cholangiocarcinoma (iCCA), are derived from a common developmental lineage, conferring a molecular spectrum between them. To elucidate the molecular spectrum, we performed an integrative analysis of transcriptome profiles associated with patients’ radiopathologic features.</jats:p> </jats:sec> <jats:sec> <jats:title>Approach and Results:</jats:title> <jats:p>We identified four LC subtypes (LC1–LC4) from RNA‐sequencing profiles, revealing intermediate subtypes between HCC and iCCA. LC1 is a typical HCC characterized by active bile acid metabolism, telomerase reverse transcriptase promoter mutations, and high uptake of gadoxetic acid in MRI. LC2 is an iCCA‐like HCC characterized by expression of the progenitor cell–like trait, tumor protein p53 mutations, and rim arterial‐phase hyperenhancement in MRI. LC3 is an HCC‐like iCCA, mainly small duct (SD) type, associated with HCC‐related etiologic factors. LC4 is further subclassified into LC4‐SD and LC4‐large duct iCCAs according to the pathological features, which exhibited distinct genetic variations (e.g., <jats:italic toggle="yes">KRAS</jats:italic>, isocitrate dehydrogenase 1/2 mutation, and FGF receptor 2 fusion), stromal type, and prognostic outcomes.</jats:p> </jats:sec> <jats:sec> <jats:title>Conclusions:</jats:title> <jats:p>Our integrated view of the molecular spectrum of LCs can identify subtypes associated with transcriptomic, genomic, and radiopathologic features, providing mechanistic insights into heterogeneous LC progression.</jats:p> </jats:sec>

収録刊行物

  • Hepatology

    Hepatology 77 (1), 92-108, 2022-02-26

    Ovid Technologies (Wolters Kluwer Health)

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