Leflunomide treatment for patients with MEN1 gene mutation

Leflunomide Treatment for MEN1 Patients - the LUMEN1 Trial

Not applicable Interventional University Hospital, Basel, Switzerland · NCT05605587

This study is testing if Leflunomide can help adults with MEN1 gene mutations manage their tumors and hormone issues better.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment15 (estimated)
Ages18 Years and up
SexAll
SponsorUniversity Hospital, Basel, Switzerland Academic / other
Locations1 site (Basel)
Trial IDNCT05605587 on ClinicalTrials.gov

What this trial studies

This clinical trial investigates the use of Leflunomide, a medication traditionally used for rheumatoid arthritis, in treating patients with multiple endocrine neoplasia type 1 (MEN1) caused by mutations in the MEN1 gene. The study aims to assess the effectiveness of Leflunomide in managing associated tumors and hormonal syndromes in adult patients with confirmed MEN1 mutations. Participants will receive a daily dose of 20 mg of Leflunomide, and the trial will monitor their health outcomes over time. The goal is to explore a potential prophylactic treatment option for this hereditary condition, which currently lacks effective preventive measures.

Who should consider this trial

Good fit: Ideal candidates for this study are adults aged 18 and older with a known pathogenic MEN1 germline mutation and at least one associated tumor lesion or hormonal syndrome.

Not a fit: Patients with uncontrolled hypertension, impaired kidney or liver function, or cytopenia may not benefit from this study.

Why it matters

Potential benefit: If successful, this treatment could significantly improve the management and outcomes for patients with MEN1 by potentially preventing tumor development.

How similar studies have performed: While Leflunomide has been used in other contexts, this specific application for MEN1 is novel and has not been extensively tested in prior studies.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Adult (≥18 years) patients with known pathogenic or likely pathogenic MEN1-germline mutation and at least 1 associated tumor lesion OR hormonal syndrome

Exclusion Criteria:

* uncontrolled arterial hypertension, defined as blood pressure \>160/100 mmHg
* Impaired kidney function, defined as creatinine clearance \<50ml/min
* Impaired liver function, defined as bilirubin or liver transaminases \>3 times upper normal range
* Cytopenia, defined as one or several of the following: hemogloin \<100 g/l, leucopenia \<2x109/l, thrombocytopenia \<100x109/l

Where this trial is running

Basel

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions MEN1 Gene Mutation
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.