固形がんにおける免疫チェックポイント阻害剤およびオンコウイルスの有効性
Hiba Mechahougui1, Léna Royston2, Catia Vieira Gomes2
1University Hospital of Geneva Geneva Switzerland.
Abstract:
Viral infections are estimated to contribute to 12-20 % of all cancers worldwide, with virus-driven malignancies disproportionately affecting low- and middle-income countries while metabolic and non-viral factors predominate in high-income regions. Key oncogenic viruses that cause solid tumors include high-risk human papillomaviruses (HPV), Epstein-Barr virus (EBV), hepatitis B virus (HBV), hepatitis C virus (HCV), Kaposi's sarcoma-associated herpesvirus (KSHV/HHV-8), and Merkel cell polyomavirus (MCPyV). Immune checkpoint inhibitors (ICIs) have revolutionized cancer therapy by boosting immune responses against tumors. While viral infection-associated tumors often exhibit "hot" immune profiles, clinical outcomes with ICIs remain inconsistent. Some studies report improved survival in virus-associated cancers, whereas others indicate no clear benefit, which might reflect high variability in tumor microenvironments and immune responses. In this review, we aim to explore the direct and indirect contribution of different viruses to carcinogenesis in solid tumors, with a particular focus on immunotherapy effectiveness based on infection status.
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