A

Disease A

Slug:Liver_Cirrhosis
B

Disease B

Slug:Hepatocellular_Carcinoma
G

Causal Mechanism Graphs

Liver Cirrhosis

graph LR
    Hepatic_Stellate_Cell_Activation["Hepatic Stellate Cell Activation"]
    Lactulose["Lactulose"]
    Jaundice["Jaundice"]
    IL_11_Signalling_in_Hepatic_Stellate_Cells["IL-11 Signalling in Hepatic Stellate Cells"]
    Alcohol_Consumption["Alcohol Consumption"]
    Hepatic_Pro_Inflammatory_Mediator_Release["Hepatic Pro-Inflammatory Mediator Release"]
    Gastrointestinal_Hemorrhage["Gastrointestinal Hemorrhage"]
    Excessive_Hepatic_ECM_Deposition["Excessive Hepatic ECM Deposition"]
    Liver_Transplantation["Liver Transplantation"]
    Reactive_Metabolite_Formation_and_Covalent_Protein_Adduction["Reactive Metabolite Formation and Covalent Protein Adduction"]
    Coagulopathy["Coagulopathy"]
    Synthetic_Dysfunction["Synthetic Dysfunction"]
    Hepatocyte_Injury_and_Death["Hepatocyte Injury and Death"]
    Antiviral_Therapy["Antiviral Therapy"]
    Increased_Intrahepatic_Vascular_Resistance["Increased Intrahepatic Vascular Resistance"]
    Kupffer_Cell_Activation["Kupffer Cell Activation"]
    Esophageal_Varices["Esophageal Varices"]
    Ascites["Ascites"]
    TGF_beta_Signaling_in_Fibrogenesis["TGF-beta Signaling in Fibrogenesis"]
    Portal_Hypertension["Portal Hypertension"]
    Akura_Twin_384_well_liver_fibrosis_microphysiological_system_HepaRG_THP_1_and_hTERT_HSC_microtissues["Akura Twin 384-well liver fibrosis microphysiological system (HepaRG/THP-1 and hTERT-HSC microtissues)"]
    Carbon_Tetrachloride_Exposure["Carbon Tetrachloride Exposure"]
    Splanchnic_Vasodilation_and_Hyperdynamic_Circulation["Splanchnic Vasodilation and Hyperdynamic Circulation"]
    Splenomegaly["Splenomegaly"]
    Beta_Blockers["Beta Blockers"]
    Hepatic_Encephalopathy["Hepatic Encephalopathy"]
    Diuretics["Diuretics"]
    Cirrhotic_Architectural_Distortion["Cirrhotic Architectural Distortion"]

    Reactive_Metabolite_Formation_and_Covalent_Protein_Adduction --> Hepatocyte_Injury_and_Death
    Hepatocyte_Injury_and_Death --> Kupffer_Cell_Activation
    IL_11_Signalling_in_Hepatic_Stellate_Cells --> Hepatic_Stellate_Cell_Activation
    Hepatic_Stellate_Cell_Activation --> Excessive_Hepatic_ECM_Deposition
    Excessive_Hepatic_ECM_Deposition --> Cirrhotic_Architectural_Distortion
    Cirrhotic_Architectural_Distortion --> Increased_Intrahepatic_Vascular_Resistance
    Cirrhotic_Architectural_Distortion --> Synthetic_Dysfunction
    Cirrhotic_Architectural_Distortion --> Jaundice
    Increased_Intrahepatic_Vascular_Resistance --> Portal_Hypertension
    TGF_beta_Signaling_in_Fibrogenesis --> Hepatic_Stellate_Cell_Activation
    TGF_beta_Signaling_in_Fibrogenesis --> IL_11_Signalling_in_Hepatic_Stellate_Cells
    Kupffer_Cell_Activation --> Hepatic_Pro_Inflammatory_Mediator_Release
    Hepatic_Pro_Inflammatory_Mediator_Release --> Hepatic_Stellate_Cell_Activation
    Hepatic_Pro_Inflammatory_Mediator_Release --> TGF_beta_Signaling_in_Fibrogenesis
    Splanchnic_Vasodilation_and_Hyperdynamic_Circulation --> Portal_Hypertension
    Portal_Hypertension --> Esophageal_Varices
    Portal_Hypertension --> Ascites
    Portal_Hypertension --> Hepatic_Encephalopathy
    Portal_Hypertension --> Splenomegaly
    Synthetic_Dysfunction --> Coagulopathy
    Esophageal_Varices --> Gastrointestinal_Hemorrhage
    Alcohol_Consumption --> Hepatocyte_Injury_and_Death
    Carbon_Tetrachloride_Exposure --> Reactive_Metabolite_Formation_and_Covalent_Protein_Adduction
    Antiviral_Therapy --> Excessive_Hepatic_ECM_Deposition
    Diuretics --> Ascites
    Beta_Blockers --> Splanchnic_Vasodilation_and_Hyperdynamic_Circulation
    Lactulose --> Hepatic_Encephalopathy
    Liver_Transplantation --> Cirrhotic_Architectural_Distortion
    Akura_Twin_384_well_liver_fibrosis_microphysiological_system_HepaRG_THP_1_and_hTERT_HSC_microtissues --> Hepatic_Stellate_Cell_Activation
    Akura_Twin_384_well_liver_fibrosis_microphysiological_system_HepaRG_THP_1_and_hTERT_HSC_microtissues --> Kupffer_Cell_Activation
    Akura_Twin_384_well_liver_fibrosis_microphysiological_system_HepaRG_THP_1_and_hTERT_HSC_microtissues --> Hepatic_Pro_Inflammatory_Mediator_Release
    Akura_Twin_384_well_liver_fibrosis_microphysiological_system_HepaRG_THP_1_and_hTERT_HSC_microtissues --> Hepatocyte_Injury_and_Death
    Akura_Twin_384_well_liver_fibrosis_microphysiological_system_HepaRG_THP_1_and_hTERT_HSC_microtissues --> TGF_beta_Signaling_in_Fibrogenesis

    style Hepatic_Stellate_Cell_Activation fill:#dbeafe
    style Lactulose fill:#fce7f3
    style Jaundice fill:#fef3c7
    style IL_11_Signalling_in_Hepatic_Stellate_Cells fill:#dbeafe
    style Alcohol_Consumption fill:#dcfce7
    style Hepatic_Pro_Inflammatory_Mediator_Release fill:#dbeafe
    style Gastrointestinal_Hemorrhage fill:#fef3c7
    style Excessive_Hepatic_ECM_Deposition fill:#dbeafe
    style Liver_Transplantation fill:#fce7f3
    style Reactive_Metabolite_Formation_and_Covalent_Protein_Adduction fill:#dbeafe
    style Coagulopathy fill:#fef3c7
    style Synthetic_Dysfunction fill:#dbeafe
    style Hepatocyte_Injury_and_Death fill:#dbeafe
    style Antiviral_Therapy fill:#fce7f3
    style Increased_Intrahepatic_Vascular_Resistance fill:#dbeafe
    style Kupffer_Cell_Activation fill:#dbeafe
    style Esophageal_Varices fill:#fef3c7
    style Ascites fill:#fef3c7
    style TGF_beta_Signaling_in_Fibrogenesis fill:#dbeafe
    style Portal_Hypertension fill:#dbeafe
    style Akura_Twin_384_well_liver_fibrosis_microphysiological_system_HepaRG_THP_1_and_hTERT_HSC_microtissues fill:#ccfbf1
    style Carbon_Tetrachloride_Exposure fill:#dcfce7
    style Splanchnic_Vasodilation_and_Hyperdynamic_Circulation fill:#dbeafe
    style Splenomegaly fill:#fef3c7
    style Beta_Blockers fill:#fce7f3
    style Hepatic_Encephalopathy fill:#fef3c7
    style Diuretics fill:#fce7f3
    style Cirrhotic_Architectural_Distortion fill:#dbeafe

Hepatocellular Carcinoma

graph LR
    Enhanced_Hepatocyte_Proliferation["Enhanced Hepatocyte Proliferation"]
    Chronic_hepatitis_B_or_C_infection["Chronic hepatitis B or C infection"]
    Impaired_Mitochondrial_Oxidative_Phosphorylation["Impaired Mitochondrial Oxidative Phosphorylation"]
    Telomere_Dysfunction_and_Genomic_Instability["Telomere Dysfunction and Genomic Instability"]
    Atezolizumab_plus_Bevacizumab["Atezolizumab plus Bevacizumab"]
    Portal_Vein_Invasion_and_Tumor_Thrombus["Portal Vein Invasion and Tumor Thrombus"]
    TAGLN2_Mediated_CSNK1E_Stabilization["TAGLN2-Mediated CSNK1E Stabilization"]
    Long_term_Western_diet_feeding["Long-term Western diet feeding"]
    Aerobic_Glycolytic_Shift_in_MASLD_Associated_HCC["Aerobic Glycolytic Shift in MASLD-Associated HCC"]
    Accumulation_of_Driver_Mutations["Accumulation of Driver Mutations"]
    Lenvatinib["Lenvatinib"]
    Aerobic_Glycolysis_and_Metabolic_Reprogramming["Aerobic Glycolysis and Metabolic Reprogramming"]
    MMP9_Upregulation["MMP9 Upregulation"]
    Angiogenesis_and_VEGF_Signaling["Angiogenesis and VEGF Signaling"]
    Sorafenib["Sorafenib"]
    YAP_Nuclear_Translocation["YAP Nuclear Translocation"]
    Immune_Evasion_and_Immunosuppressive_Microenvironment["Immune Evasion and Immunosuppressive Microenvironment"]
    WNT_Beta_Catenin_Pathway_Activation["WNT/Beta-Catenin Pathway Activation"]
    PI3K_AKT_mTOR_Pathway_Activation["PI3K/AKT/mTOR Pathway Activation"]
    Necroptosis_Independent_MLKL_Function["Necroptosis-Independent MLKL Function"]
    Chronic_Liver_Injury_and_Cirrhosis["Chronic Liver Injury and Cirrhosis"]
    Hepatocyte_MLKL_Upregulation["Hepatocyte MLKL Upregulation"]
    Durvalumab_plus_Tremelimumab["Durvalumab plus Tremelimumab"]
    TAGLN2_Driven_Epithelial_Mesenchymal_Transition["TAGLN2-Driven Epithelial-Mesenchymal Transition"]
    Monomethyl_phthalate_exposure["Monomethyl phthalate exposure"]
    MFN2_Suppression_and_Impaired_Mitochondrial_Fusion["MFN2 Suppression and Impaired Mitochondrial Fusion"]
    Alcohol_and_aflatoxin_exposure["Alcohol and aflatoxin exposure"]

    Chronic_Liver_Injury_and_Cirrhosis --> Telomere_Dysfunction_and_Genomic_Instability
    Chronic_Liver_Injury_and_Cirrhosis --> Accumulation_of_Driver_Mutations
    Telomere_Dysfunction_and_Genomic_Instability --> WNT_Beta_Catenin_Pathway_Activation
    Accumulation_of_Driver_Mutations --> PI3K_AKT_mTOR_Pathway_Activation
    WNT_Beta_Catenin_Pathway_Activation --> Enhanced_Hepatocyte_Proliferation
    WNT_Beta_Catenin_Pathway_Activation --> Portal_Vein_Invasion_and_Tumor_Thrombus
    Hepatocyte_MLKL_Upregulation --> Necroptosis_Independent_MLKL_Function
    Hepatocyte_MLKL_Upregulation --> MFN2_Suppression_and_Impaired_Mitochondrial_Fusion
    MFN2_Suppression_and_Impaired_Mitochondrial_Fusion --> Impaired_Mitochondrial_Oxidative_Phosphorylation
    Impaired_Mitochondrial_Oxidative_Phosphorylation --> Aerobic_Glycolytic_Shift_in_MASLD_Associated_HCC
    Aerobic_Glycolytic_Shift_in_MASLD_Associated_HCC --> Enhanced_Hepatocyte_Proliferation
    PI3K_AKT_mTOR_Pathway_Activation --> Enhanced_Hepatocyte_Proliferation
    PI3K_AKT_mTOR_Pathway_Activation --> Immune_Evasion_and_Immunosuppressive_Microenvironment
    PI3K_AKT_mTOR_Pathway_Activation --> Aerobic_Glycolysis_and_Metabolic_Reprogramming
    Angiogenesis_and_VEGF_Signaling --> Immune_Evasion_and_Immunosuppressive_Microenvironment
    Aerobic_Glycolysis_and_Metabolic_Reprogramming --> Enhanced_Hepatocyte_Proliferation
    MMP9_Upregulation --> Portal_Vein_Invasion_and_Tumor_Thrombus
    MMP9_Upregulation --> Enhanced_Hepatocyte_Proliferation
    TAGLN2_Mediated_CSNK1E_Stabilization --> YAP_Nuclear_Translocation
    YAP_Nuclear_Translocation --> TAGLN2_Driven_Epithelial_Mesenchymal_Transition
    TAGLN2_Driven_Epithelial_Mesenchymal_Transition --> Portal_Vein_Invasion_and_Tumor_Thrombus
    Chronic_hepatitis_B_or_C_infection --> Chronic_Liver_Injury_and_Cirrhosis
    Alcohol_and_aflatoxin_exposure --> Chronic_Liver_Injury_and_Cirrhosis
    Long_term_Western_diet_feeding --> Hepatocyte_MLKL_Upregulation
    Monomethyl_phthalate_exposure --> MMP9_Upregulation
    Atezolizumab_plus_Bevacizumab --> Immune_Evasion_and_Immunosuppressive_Microenvironment
    Atezolizumab_plus_Bevacizumab --> Angiogenesis_and_VEGF_Signaling
    Durvalumab_plus_Tremelimumab --> Immune_Evasion_and_Immunosuppressive_Microenvironment
    Sorafenib --> Angiogenesis_and_VEGF_Signaling
    Lenvatinib --> Angiogenesis_and_VEGF_Signaling

    style Enhanced_Hepatocyte_Proliferation fill:#dbeafe
    style Chronic_hepatitis_B_or_C_infection fill:#dcfce7
    style Impaired_Mitochondrial_Oxidative_Phosphorylation fill:#dbeafe
    style Telomere_Dysfunction_and_Genomic_Instability fill:#dbeafe
    style Atezolizumab_plus_Bevacizumab fill:#fce7f3
    style Portal_Vein_Invasion_and_Tumor_Thrombus fill:#dbeafe
    style TAGLN2_Mediated_CSNK1E_Stabilization fill:#dbeafe
    style Long_term_Western_diet_feeding fill:#dcfce7
    style Aerobic_Glycolytic_Shift_in_MASLD_Associated_HCC fill:#dbeafe
    style Accumulation_of_Driver_Mutations fill:#dbeafe
    style Lenvatinib fill:#fce7f3
    style Aerobic_Glycolysis_and_Metabolic_Reprogramming fill:#dbeafe
    style MMP9_Upregulation fill:#dbeafe
    style Angiogenesis_and_VEGF_Signaling fill:#dbeafe
    style Sorafenib fill:#fce7f3
    style YAP_Nuclear_Translocation fill:#dbeafe
    style Immune_Evasion_and_Immunosuppressive_Microenvironment fill:#dbeafe
    style WNT_Beta_Catenin_Pathway_Activation fill:#dbeafe
    style PI3K_AKT_mTOR_Pathway_Activation fill:#dbeafe
    style Necroptosis_Independent_MLKL_Function fill:#dbeafe
    style Chronic_Liver_Injury_and_Cirrhosis fill:#dbeafe
    style Hepatocyte_MLKL_Upregulation fill:#dbeafe
    style Durvalumab_plus_Tremelimumab fill:#fce7f3
    style TAGLN2_Driven_Epithelial_Mesenchymal_Transition fill:#dbeafe
    style Monomethyl_phthalate_exposure fill:#dcfce7
    style MFN2_Suppression_and_Impaired_Mitochondrial_Fusion fill:#dbeafe
    style Alcohol_and_aflatoxin_exposure fill:#dcfce7
S

Association Signals

Signal 1
LITERATURE LITERATURE_ASSOCIATION A_BEFORE_B
Population:Brazilian cirrhosis outpatient cohort under six-monthly HCC surveillance (n=453; hepatitis C virus and heavy alcohol use the main etiologies), Porto Alegre, 2005-2014, 10-year retrospective cohort with Kaplan-Meier estimation of incident HCC.
Temporal: A before B: , B before A: , Same time:
INCIDENCE_RATE: 2.6
CI: -
p:
FDR:
Kaplan-Meier cumulative incidence of HCC at 1 year among patients who had cirrhosis at cohort entry, expressed as a percentage; 15.4% at 5 years and 28.8% at 10 years, with 75 of 453 patients (16.6%) developing HCC over the study period. Chosen over a within-case prevalence figure because the denominator here is the cirrhosis population followed forward, which is what a directed A_BEFORE_B risk signal requires.
PMID:28028370 (SUPPORT)
Source: HUMAN_CLINICAL
"HCC was diagnosed in 75 patients (16.6%), with an estimated cumulative incidence of 2.6% in the 1st year, 15.4% in the 5th year, and 28.8% in the 10th year."
Measures incident HCC prospectively in a defined cirrhosis cohort, supporting cirrhosis as an antecedent risk state for HCC rather than merely a frequent co-finding among HCC cases.
H

Hypotheses

Cirrhosis provides the premalignant inflammatory and regenerative context for most hepatocellular carcinoma: sustained hepatocyte injury and regeneration in the cirrhotic liver create the genomic instability and proliferative pressure from which HCC arises.
PMID:41567639 (SUPPORT)
Source: HUMAN_CLINICAL
"HCC typically arises in patients with chronic liver disease, including hepatitis, cirrhosis, and non-alcoholic fatty liver diseases."
Establishes cirrhosis as one of the chronic liver disease backgrounds from which HCC typically arises.
Y

Raw YAML

Show YAML
name: com_Liver_Cirrhosis__Hepatocellular_Carcinoma
creation_date: "2026-08-08T00:00:00Z"
curation_status: CANDIDATE
notes: >-
  Split out of the former `kb/disorders/Metastatic_HCC.yaml`'s `environmental:` block
  (since folded into `Hepatocellular_Carcinoma`, design decisions §3a)
  (dismech#8185): that entry listed `Cirrhosis` as an "exposure" acting on the
  disease's own "Chronic Liver Disease Substrate" pathophysiology node, but
  cirrhosis is one of the chronic liver injury states that node itself
  enumerates rather than something external to the organism acting on it, and
  it is a first-class `Disease` entry in its own right
  (`kb/disorders/Liver_Cirrhosis.yaml`). Modeling the relationship here as a
  disease-disease comorbidity instead makes it queryable and avoids the
  near-tautological pathograph edge. Directionality is A_BEFORE_B: cirrhosis
  is the premalignant substrate that precedes HCC development, not the
  reverse.

  Side B is `Hepatocellular_Carcinoma`, not `Metastatic_HCC`. The cited
  evidence establishes cirrhosis as the background from which HCC arises and
  measures incident HCC in a cirrhosis cohort; none of it addresses
  *metastatic* HCC specifically, and the relationship between cirrhosis and
  stage at presentation runs the other way if anything, since HCC arising in
  non-cirrhotic liver is not caught by surveillance and tends to present
  larger and later. Attaching a directed RISK edge to the metastatic entity
  would assert more than the sources support (review of dismech#8195).

disease_a:
  slug: Liver_Cirrhosis
  preferred_term: cirrhosis of liver
  term:
    id: MONDO:0005155
    label: cirrhosis of liver

disease_b:
  slug: Hepatocellular_Carcinoma
  preferred_term: hepatocellular carcinoma
  term:
    id: MONDO:0007256
    label: hepatocellular carcinoma

directionality: A_BEFORE_B
effect_direction: RISK

hypotheses:
- description: >-
    Cirrhosis provides the premalignant inflammatory and regenerative context
    for most hepatocellular carcinoma: sustained hepatocyte injury and
    regeneration in the cirrhotic liver create the genomic instability and
    proliferative pressure from which HCC arises.
  evidence:
  - reference: PMID:41567639
    reference_title: Identification of novel germline and somatic mutations associated with hepatocellular carcinoma by next-generation sequencing.
    supports: SUPPORT
    evidence_source: HUMAN_CLINICAL
    snippet: "HCC typically arises in patients with chronic liver disease, including hepatitis, cirrhosis, and non-alcoholic fatty liver diseases."
    explanation: >-
      Establishes cirrhosis as one of the chronic liver disease backgrounds
      from which HCC typically arises.

association_signals:
- source: LITERATURE
  method: LITERATURE_ASSOCIATION
  population: >-
    Brazilian cirrhosis outpatient cohort under six-monthly HCC surveillance
    (n=453; hepatitis C virus and heavy alcohol use the main etiologies),
    Porto Alegre, 2005-2014, 10-year retrospective cohort with Kaplan-Meier
    estimation of incident HCC.
  directionality: A_BEFORE_B
  effect_direction: RISK
  statistics:
    metrics:
    - metric_type: INCIDENCE_RATE
      metric_value: 2.6
      notes: >-
        Kaplan-Meier cumulative incidence of HCC at 1 year among patients who
        had cirrhosis at cohort entry, expressed as a percentage; 15.4% at 5
        years and 28.8% at 10 years, with 75 of 453 patients (16.6%)
        developing HCC over the study period. Chosen over a within-case
        prevalence figure because the denominator here is the cirrhosis
        population followed forward, which is what a directed A_BEFORE_B risk
        signal requires.
    evidence:
    - reference: PMID:28028370
      reference_title: "Incidence of hepatocellular carcinoma in outpatients with cirrhosis in Brazil: A 10-year retrospective cohort study."
      supports: SUPPORT
      evidence_source: HUMAN_CLINICAL
      snippet: "HCC was diagnosed in 75 patients (16.6%), with an estimated cumulative incidence of 2.6% in the 1st year, 15.4% in the 5th year, and 28.8% in the 10th year."
      explanation: >-
        Measures incident HCC prospectively in a defined cirrhosis cohort,
        supporting cirrhosis as an antecedent risk state for HCC rather than
        merely a frequent co-finding among HCC cases.
Source:GitHub