Skin Neoplasms, transplant recipients, chemoprevention, Skin and Connective Tissue Diseases, Squamous Cell carcinoma, basal cell carcinoma, niacinamide
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: Patients older than 18 years; transplanted at least one year ago; with diagnosis of at least two NMSC in the last 12 months; who accept to participate in the study and agree to take the medication or placebo, by signing an Informed Consent Form.
Exclusion criteria
Exclusion criteria: Patients who do not wish to participate in the study; patients with impaired renal; hepatic or clotting function; patients who had malignant internal organ tumors in the last 5 years or malignant tumor metastases; pregnant or lactating women; patients on hemodialysis or peritoneal dialysis; patients who underwent treatment for actinic keratoses in the last 4 weeks; patients using systemic retinoids or with previous use of nicotinamide in the last 4 weeks
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| To evaluate the incidence of non-melanoma skin cancer detected by clinical examination and confirmed by histological examination in transplant patients who used nicotinamide medication compared to placebo. | — |
Secondary
| Measure | Time frame |
|---|---|
| To evaluate the incidence of actinic keratoses through clinical consultation between intervention and control groups;Evaluate remission or cure of actinic keratoses through clinical consultation between the intervention group and the placebo group;Assess the safety and tolerability of nicotineimide use in transplant patients through clinical consultation and laboratory tests every 3 months | — |
Countries
Brazil