Prediction of Appearance of Late Cutaneous Side Effects After RadioTherapy

Prediction of Appearance of Late Cutaneous Side Effects After RadioTherapy

Search for blood predictive marker (s) for cutaneous radiosensitivity

Inclusion Criteria:

• Patient treated with surgery and radiotherapy (RT) for histologically proven Merkel carcinoma
• Previous radiotherapy treatment completed for at least 6 months
• Absence of prior treatment by chemotherapy or hormonotherapy
• Patient over 18 years of age
• Patient affiliated to a social security system
• Informed consent signed

Exclusion Criteria:

• Presence of another evolutionary cancer
• Re-irradiation in the same area
• Absence of available dosimetry data
• Patient under guardianship or curatorship or safeguard of justice