Using Methotrexate and Prednisolone to Treat Erythema Nodosum Leprosum

Methotrexate and Prednisolone Study in Erythema Nodosum Leprosum (MaPS in ENL

Not applicable Interventional London School of Hygiene and Tropical Medicine · NCT03775460

This study is testing if the drug Methotrexate can help people with painful Erythema Nodosum Leprosum, a complication of leprosy, when used with a gradually reduced dose of prednisolone.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment550 (estimated)
Ages18 Years to 60 Years
SexAll
SponsorLondon School of Hygiene and Tropical Medicine Academic / other
Drugs / interventionsmethotrexate
Locations7 sites (Dhaka and 6 other locations)
Trial IDNCT03775460 on ClinicalTrials.gov

What this trial studies

This clinical trial investigates the effectiveness of Methotrexate (MTX) in managing Erythema Nodosum Leprosum (ENL), a painful complication of leprosy. Patients diagnosed with moderate to severe ENL will be randomly assigned to receive either MTX or a placebo alongside a tapering dose of prednisolone over 48 weeks. The trial will monitor adverse effects and assess the severity of ENL using a standardized scale. Participants will be recruited from multiple countries, including Bangladesh, Brazil, Ethiopia, India, Indonesia, and Nepal.

Who should consider this trial

Good fit: Ideal candidates include individuals aged 18-60 diagnosed with leprosy complicated by moderate to severe ENL.

Not a fit: Patients who have had ENL for more than four years or are currently receiving other anti-ENL treatments may not benefit from this study.

Why it matters

Potential benefit: If successful, this treatment could provide a safer and more affordable alternative for managing ENL, reducing reliance on corticosteroids.

How similar studies have performed: Previous studies have indicated that Methotrexate may be effective for ENL resistant to traditional treatments, suggesting potential success for this approach.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:: ALL OF THE FOLLOWING SIX CRITERIA MUST BE MET IN ORDER FOR AN INDIVIDUAL TO BE ELIGIBLE (ONLY ONE OF 6A TO 6D NEED BE MET):

1. Individuals who diagnosed with leprosy complicated by ENL
2. Individuals with ENL aged 18-60 years old
3. Individuals with ENL deteriorating symptoms
4. Individuals with 10 or more tender, papular or nodular ENL skin lesions
5. Individuals with an EESS score of at least 9
6. Individuals with ENL on:

   1. No current anti- ENL treatment
   2. Prednisolone up to 30mg per day (if ACUTE) or Prednisolone 10-30mg (inclusive) per day (if RECURRENT/ CHRONIC) or equivalent alternative corticosteroid dose OR
   3. Thalidomide or other non-steroidal anti-ENL medication OR
   4. A combination of prednisolone (up to 30mg) and another non-steroidal anti-ENL medication (thalidomide, clofazimine, azathioprine, pentoxifylline, ciclosporin, minocycline)

Exclusion criteria:

1. Individuals who were first diagnosed with ENL more than 4 years prior to enrolment
2. Individuals less than 18 years old or older than 60 years
3. Individuals weighing less than 35kg
4. Individuals with 9 or fewer tender, popular or nodular ENL skin lesions
5. Individuals with an EESS score of 8 or less
6. Women of child bearing capacity who decline to use two forms of adequate contraception and men who decline to use two forms of adequate contraception
7. Pregnant or breastfeeding women
8. Individuals with recurrent or chronic ENL who deteriorate on a dose of prednisolone less than 10 mg or more than 30 mg
9. Individuals who have taken methotrexate by any route for the last 12 weeks
10. Individuals with a hypersensitivity to methotrexate or a recognised contraindication ( please see Methotrexate information sheet)
11. Individuals currently diagnosed with Type 1 reaction or Lucio's phenomenon
12. Individuals with the severe abnormalities in screening investigations
13. Positive serology for HIV, Hepatitis B or C
14. Evidence of tuberculosis or pulmonary fibrosis
15. A history of chronic liver disease or excessive alcohol or illicit substance consumption
16. Individuals with severe inter-current infections, uncontrolled diabetes, active peptic ulcer disease, untreated malignancy
17. Individuals unable to attend regularly for assessment or monitoring

Where this trial is running

Dhaka and 6 other locations

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 Erythema Nodosum LeprosumENLcorticosteroidsMethotrexateENL severity scalequality of lifeLeprosy
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.