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Investigator Initiated Study To Evaluate Leflunomide for the Treatment of Corona Virus Disease 2019 (COVID-19)

Targeting de novo Pyrimidine Biosynthesis by leflunomide as a Novel Concept for the Treatment of Corona Virus Disease 2019 (COVID-19) - DEFEAT-COVID

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
CTRI
Registry ID
CTRI/2020/12/030072
Enrollment
178
Registered
2020-12-28
Start date
Unknown
Completion date
Unknown
Last updated
2025-08-18

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Health Condition 1: B972- Coronavirus as the cause of diseases classified elsewhere

Interventions

Intervention1: Leflunomide tablet and Standard Of Care: loading dose of oral Leflunomide 100mg daily for 3 days, followed by leflunomide 10-20mg daily, to maintain a total course of 10 days. Control I

Sponsors

Research and Development Department RD
Lead Sponsor

Eligibility

Inclusion criteria

Inclusion criteria: Age =18 years 2. Patients with onset of symptoms ?15 days 3. Laboratory (RT-PCR) confirmed infection with 2019-nCoV.

Exclusion criteria

Exclusion criteria: Exclusion criteria: 1. Pregnant or breast feeding; 2. On specific monoclonal antibodies, or other drug trial treatment for COVID-19 within one week prior to study enrolment; 3. Liver function tests >2 fold of upper limits of normal (ULN) reference levels of the respective testing assay. 4. Patients with known hypersensitive to leflunomide 5. Patients with severe immunodeficiency syndrome and hypoalbuminaemia.

Design outcomes

Primary

MeasureTime frame
1.Time to Clinical Improvement (TTCI, censored at Day 28; time frame: up to 28 days) TTCI is defined as the time (in days) from initiation of study treatment (active or placebo) until a decline of two categories from status at randomisation on a 7 category ordinal scale of clinical status which ranges from 1 (discharged) to 7 (death) as per WHO R&D Blueprint expert group. The 7-category ordinal scale Timepoint: Day 1- Day 28

Secondary

MeasureTime frame
1. Proportion of SARS-CoV-2 negativity by RT-PCR at 7-, 11- and 15-days post initiation of treatment Change in viral load in upper respiratory tract specimens. 2. To evaluate the impact of leflunomide on overall clinical outcomes, viral clearance, organ dysfunction, and physiological measures reflecting pulmonary, cardiac and renal function. 3. To monitor physiological surrogates of infection and lung injury and to quantitatively assess inflammatory markers.Timepoint: Day 1- Day 28

Countries

India, United Kingdom

Contacts

Public ContactDr Deven Juneja

Max Smart super specialty Hospital

devenjuneja@gmail.com

Outcome results

None listed

Source: CTRI (via WHO ICTRP) · Data processed: Feb 4, 2026