Skin Cancers in Australian Liver Transplant Recipients: Risk Factors and Histology

Area of Science:

• Dermatology
• Transplant Surgery
• Oncology

Background:

• Skin cancer is a common comorbidity in liver transplant recipients (LTRs).
• Carcinogenesis is influenced by immunosuppression and personal risk factors like smoking and UV exposure.
• Understanding these factors is crucial for managing LTR health.

Purpose of the Study:

• To investigate the impact of personal and transplant-related risk factors on cutaneous carcinogenesis.
• To conduct a large-scale retrospective case-matched cohort study.
• To identify key determinants of skin cancer development in LTRs.

Main Methods:

• A case-control study involving 114 LTRs with skin cancer and 288 matched controls.
• Data collection through chart review and phone interviews, including histology.
• Logistic regression analysis to determine odds ratios for various risk factors.

Main Results:

• Fitzpatrick skin types 1-2 (OR=6.98), >5 sunburns (OR=3.71), prior skin cancer (OR=3.36), and smoking (OR=3.30) significantly increased skin cancer risk.
• mTOR inhibitor immunosuppression showed a protective effect (OR=0.30).
• Squamous cell carcinomas (SCCs) constituted the majority (63.11%) of skin cancers.

Conclusions:

• Personal and transplant-related factors significantly alter skin cancer risk in LTRs.
• Risk stratification can guide personalized surveillance strategies.
• Early detection and treatment of skin cancers in LTRs are essential.