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Human papillomavirus (HPV) contributes to skin cancer (cSCC), particularly in immunocompromised individuals. This review details HPV

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Area of Science:

  • Dermatology
  • Oncology
  • Virology

Background:

  • Human papillomavirus (HPV) is linked to skin cancer development, especially in immunosuppressed patients.
  • HPV oncoproteins E6 and E7 can inactivate tumor suppressor proteins p53 and pRb, disrupting cell cycle control.
  • Different HPV types (β and α) have distinct roles in skin conditions like epidermodysplasia verruciformis and mucosal/cutaneous lesions.

Purpose of the Study:

  • To review the microbiology of HPV and its role in cutaneous squamous cell carcinoma (cSCC) oncogenesis.
  • To examine the clinical characteristics of HPV-associated cSCC in immunosuppressed individuals, including solid organ transplant recipients.
  • To provide evidence-based management guidelines for HPV-related cSCC.

Main Methods:

  • Literature review of HPV microbiology, oncogenesis, and clinical associations with cSCC.
  • Analysis of HPV oncoprotein mechanisms (E6/E7) in disrupting host cell cycle regulation.
  • Examination of clinical data on cSCC in immunosuppressed patients and specific HPV types.

Main Results:

  • HPV's oncogenic potential is mediated by E6/E7 proteins inactivating p53 and pRb, leading to uncontrolled cell proliferation.
  • β-HPV types are associated with epidermodysplasia verruciformis, while α types cause cutaneous and mucosal pathologies.
  • Immunosuppression, particularly post-solid organ transplant, significantly increases the risk and impacts cSCC characteristics.

Conclusions:

  • HPV is a significant factor in cSCC carcinogenesis, especially in immunocompromised hosts.
  • Understanding HPV types, oncoprotein function, and clinical presentation is crucial for managing cSCC.
  • Management guidelines for HPV-associated cSCC should consider host factors, tumor characteristics, and emerging therapeutic options, including vaccines.