The goal of this clinical trial is to set up a prospective, fit-for-purpose collection of human body material (HBM)-blood (serum, plasma, DNA) and tissue-and standardized clinical data of patients with cutaneous melanoma, non-melanoma skin cancer and healthy controls.

The main questions it aims to answer are:

• To create a biobank with samples of human body material (HBM): blood (serum/plasma/DNA) and tissue and clinical data of patients with cutaneous melanoma, non-melanoma and helathy controls.
• To support future research questions (after specific approval of the Ethics Committee) by using the biobank (through satellite protocols).

If there is a comparison group: Not applicable (umbrella protocol for collection only).

Participants will:

• Share demographics, medical and surgical history, risk factors.

• Complete Cancer Worry Scale questionnaire.

• Provide biological samples:

  • Blood samples (serum, plasma, DNA).
  • Tissue samples (residual tissue or additional biopsy if consented).

Inclusion Criteria:

• Voluntary written informed consent of the participant or their legally authorized representative has been obtained prior to any screening procedures
• Adult subjects (>18 years of age) at time of enrolment.
• Subjects diagnosed with cutaneous melanoma, Non-melanoma skin cancer or healthy controls.
• Adult subjects able and willing to provide informed consent.

Exclusion Criteria:

• Subjects unable or not willing to provide informed consent.
• Pregnancy (or willing to become pregnant) is NOT an exclusion criteria (unless specified in the respective satellite protocols.

Adult patients (≥18 years) diagnosed with cutaneous melanoma or non-melanoma skin cancer (including basal cell carcinoma and squamous cell carcinoma) who are treated at University Hospitals Leuven. Participants must provide voluntary written informed consent prior to any study-related procedures. Patients unable or unwilling to provide consent are excluded.

Individual participant data (IPD) will not be shared publicly. This study is an umbrella protocol for the collection and long-term storage of human body material (HBM) and associated clinical data in a biobank. Data are pseudonymized and linked to biological samples for future research projects, which require separate ethical approval. Access to IPD will only be granted under strict conditions through approved satellite protocols and in compliance with GDPR and Belgian privacy laws.