Erythema Nodosum Leprosum (ENL) is a painful, debilitating complication of leprosy. Patients often require high doses of corticosteroids for prolonged periods. Thalidomide is expensive and not available in most countries. The use of corticosteroids for long periods is associated with adverse effects and mortality. It is a priority to identify alternative agents to treat ENL. Methotrexate (MTX) is a cheap, widely used medication which has been reported to be effective in ENL resistant to steroids and thalidomide.
This is a double blind randomized controlled trial (RCT) to test the efficacy of MTX for managing ENL. Patients diagnosed with moderate or severe ENL at ENLIST Group centres in Bangladesh, Brazil, Ethiopia, India, Indonesia and Nepal will be randomly allocated to receive a 15 or 20 mg of oral MTX each week for 48 weeks and prednisolone 40 mg per day reducing to zero over 20 weeks. The control group will receive an identical prednisolone scheme. The participants will be stratified into two groups, those with acute ENL, those with chronic/recurrent ENL. The interventions for both populations are the same, although analysed separately. Adverse effects (AE) will be closely monitored clinically and using laboratory tests. Participants will receive folic acid, 5mg daily for 52 weeks except on the day of MTX to prevent AEs, and nausea will be managed with ondansetron.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Enrollment
550
Participants in the intervention group will receive methotrexate along side prednisolone
Participants in the control arm will receive placebo along side prednisolone
Participants in both arm will receive prednisolone, which will be the same dosage: 40 mg (initial dose) decreasing dosage for 20 weeks
TMLI Bangladesh/ DBLM hospital
Dhaka, Bangladesh
FIOCRUZ
Rio de Janeiro, Brazil
ALERT
Addis Ababa, Ethiopia
The Leprosy Mission Trust
Delhi, India
Proportion of individuals free from Erythema Nodosum Leprosum (ENL) flares in 24 weeks
Proportion of individuals who have not required additional prednisolone during the first 24 weeks. The aim is to evaluate if individuals in the methotrexate regimen will need less prednisolone than the control arm.
Time frame: During the first 24 weeks
Proportion of individuals free from ENL flares in 48 weeks
Proportion of individuals who have not required additional prednisolone during the first 48 weeks. To evaluate if methotrexate will be more efficient to control ENL than only prednisolone
Time frame: During first 48 weeks
Change in ENLIST ENL severity scale score (EESS)
ENLIST group (Erythema Nodosum Leprosum International STudy) developed and validated a severity scale for ENL, which consist 10 symptoms and signs of ENL and range from 0 to 30 points. Mild ENL is categorised as an score of 8 or less. We will measure the change in ENLIST ENL Severity Scale score from baseline to the first flare of ENL requiring additional prednisolone
Time frame: 60 weeks
Quality of life changes: 36- Item Short Form (SF-36) questionnaire
Change in patient reported health-related quality of life at 24 and 48 weeks from baseline. This will be measured by 36- Item Short Form (SF-36) questionnaire developed by RAND, validated worldwide. The SF-36 consists of 8 scaled scores, which are the weighted sums of the questions in their section. Each scale is directly transformed into a 0-100 scale. The lower the score the more disability. If the score is 0 is equivalent to maximum disability. The 8 sections are vitality, physical functioning, bodily pain, general health perceptions, physical role functioning, emotional role functioning, emotional role functioning, social role functioning and mental health.
Time frame: at 24 and 48 weeks
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Bombay Leprosy Project
Mumbai, India
Soetomo Hospital
Surabaya, Indonesia
Anandaban Hospital
Kathmandu, Nepal
Quality of life changes regarding skin condition: Dermatology life quality Index (DLQI)
Change in patient reported health-related quality of life at 24 and 48 weeks, specific to skin condition, such as ENL. It will be used the Dermatology life quality Index (DLQI),which is a questionnaire of 10 questions to specific evaluate quality of life in dermatologic conditions.The score can range from 0 to 30, meaning 0 no effect at all on patient's life to 30 extremely large effect on patient's life.
Time frame: at 24 and 48 weeks
Proportion of individuals free from ENL flares at 60 weeks
Proportion of individuals who do not require prednisolone at 60 weeks
Time frame: 60 weeks
ENL flares per individual up to 60 weeks
Number of flares of ENL per individual requiring additional prednisolone up to 60 weeks
Time frame: 60 weeks
Severity of ENL flares
As stated on outcome 3, the severity of ENL will be measured by ENLIST ENL severity scale. The scale is composed by 10 symptoms and signs of ENL and range from 0 to 30 points. Mild ENL is categorised as an score of 8 or less. We will measure the maximum severity of flares of ENL requiring additional prednisolone up to 60 weeks
Time frame: 60 weeks
Time to the first flare of ENL
How long it takes to a participant who has an ENL flare to present with first episode of flare after enrolment
Time frame: 60 weeks
Adverse effects
Proportion of individuals with treatment related adverse effects
Time frame: 60 weeks
Quality of life at 60 weeks: SF-36 questionnaire
As described on outcome 4. We will use SF-36 questionnaire to measure quality of life. Change in patient reported health-related quality of life at 60 weeks from baseline
Time frame: 60 weeks
Quality of life at 60 weeks regarding skin condition: Dermatology Life Quality Index (DLQI) questionnaires
As described on outcome 5. We will use DLQI questionnaires to measure quality of life. Change in patient reported health-related quality of life at 60 weeks from baseline, specific to skin conditions such as ENL.
Time frame: 60 weeks
Individuals free from ENL flares in 60 weeks
Proportion of individuals who have not required additional prednisolone in the 60 weeks of the trial
Time frame: 60 weeks