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Study to Evaluate the Benefit of RUCONEST in Improving Neurological Symptoms in Post COVID-19 Infection

A Randomized, Double Blind, Placebo Controlled, Cross-Over, Proof-of-Concept Study to Evaluate the Benefit of RUCONEST (C1 Esterase Inhibitor [Recombinant]) in Improving Neurological Symptoms in Post-SARS-CoV-2 Infection

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04705831
Enrollment
40
Registered
2021-01-12
Start date
2021-01-11
Completion date
2024-07-01
Last updated
2025-08-11

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

Conditions

Covid19, Post-Viral Disorder (Disorder), Post-Viral Fatigue Syndrome

Keywords

Post-COVID Symptoms, Post-Viral Fatigue Syndrome

Brief summary

Randomized, Double Blind, Placebo Controlled, Proof-of-Concept Study to Evaluate the Benefit of RUCONEST in Improving Neurological Symptoms in Post-SARS-CoV-2 Infection.

Detailed description

This study will last approximately 19 weeks including 16 infusions total, each one week apart. This is to help patients that have developed Post-Viral Fatigue Syndrome which can include symptoms such as: extreme fatigue, lost of taste, brain fog, and/or seizures.

Interventions

C1 Esterase Inhibitor

Sponsors

IMMUNOe Research Centers
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Caregiver)

Eligibility

Sex/Gender
ALL
Age
18 Years to 75 Years
Healthy volunteers
No

Inclusion criteria

1. Age 18 and older, male or female 2. Previous confirmed diagnosis of SARS-CoV-2 3. Experiencing SARS-CoV-2 post-viral fatigue syndrome 4 weeks after recovery for SARS-CoV-2 4. Experiencing neurological symptoms including fatigue 5. Willing to comply with all aspects of the protocol, including blood draws 6. Patient is able to understand and fully participate in the activities of the study and the consent in accordance with guidelines 7. Female patients of childbearing potential who are sexually active must be willing to use an acceptable form of contraception. Acceptable forms of contraception are defined as those with a failure rate of \< 1% when properly applied and include: a combination pill, some intra-uterine devices, and a sterilized partner in a stable relationship. Female patients must not be pregnant, planning to become pregnant, or be actively breastfeeding through the entire period.

Exclusion criteria

1. Receiving any form of C1-INH therapy either acute or prophylactic treatment 2. History or suspicion of allergy to rabbits 3. Neurological conditions related to injury 4. Neuropathy related to diabetes 5. Participants who are pregnant or lactating 6. Largely incapacitated or bed ridden 7. Currently enrolled in any other clinical study involving an investigational product or any other type of medical research judged not to be scientifically or medically compatible with this study or have discontinued with 30 days of study entry from any other clinical study involving an investigational product 8. Patients who, in the investigator's opinion, might not be suitable for the trial for safety reasons

Design outcomes

Primary

MeasureTime frameDescription
Neuropsychological Measures (BRIEF-A)Week 0Behavior Rating Inventory of Executive Function- Adult (BRIEF-A)
Neuropsychological Measures (RBANS)Week 0Repeatable Battery for the Assessment of Neuropsychological Status (RBANS)
Neuropsychological Measures (BDI II)Week 0Beck Depression Inventory II (BDI II)
Neuropsychological Measures (MoCA)Week 0Montreal Cognitive Assessment (MoCA)
Patient-Rate Questionnaires (FSS)Week 0Fatigue Severity Scale (FSS)
Patient-Rate Questionnaires (MIDAS)Week 0Migraine Disability Assessment (MIDAS)
Patient-Rate Questionnaires (HIT)Week 0Headache Impact Scale (HIT)
Patient-Rate Questionnaires (Activities)Week 0Activities of Daily Living Sliding Scale and Questionnaire
Patient-Rate Questionnaires (SF)Week 0SF McGill Pain Questionnaire
Patient-Rate Questionnaires (GSRS)Week 0Gastrointestinal Symptoms Rating Scale (GSRS)
Patient-Rate Questionnaires (SF-36)Week 0SF-36
Neurological Exam (0)Week 0Complete neurological examination
Neurological Exam (9)Week 9Complete neurological examination
Neurological Exam (17)Week 17Complete neurological examination
Immunological Biomarkers (Toll)Week 1Toll Like Receptor Function Assay
Immunological Biomarkers (GAD)Week 1GAD-65
Immunological Biomarkers (Com)Week 1Complement Panel (C4, C1-INH, C1-INH Function)
Immunological Biomarkers (Ig)Week 1Immunoglobulins-Quantitative (IgA, IgE, IgG, IgM)
Immunological Biomarkers (IgG)Week 1Immunoglobulins G, Subclasses (1-4)
Immunological Biomarkers (TH/TH)Week 1TH1/TH2 Cytokine Levels

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026