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Study of Niclosamide in Moderate and Severe Hospitalized Coronavirus-19 (COVID-19) Patients

A Phase 2/3 Randomized and Placebo-Controlled Study of ANA001 in Moderate and Severe COVID-19 Patients

Status
Completed
Phases
Phase 2Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04603924
Enrollment
49
Registered
2020-10-27
Start date
2020-10-07
Completion date
2022-02-16
Last updated
2025-05-15

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

Conditions

COVID-19

Keywords

Corona Virus Disease (COVID-19), Niclosamide, Antiviral, Immunomodulator, Oral Niclosamide, Infection, Acute Respiratory Distress Syndrome (ARDS), Cytokine dysregulation, Virus, Viral, anthelmintic, anti-inflammatory, bronchodilator, antineoplastic, ANA001, Moderate COVID-19, ARDS, Acute Respiratory Distress Syndrome, Hospitalized COVID-19

Brief summary

Study of ANA001 in Moderate and Severe COVID-19 Patients

Detailed description

This is a 2 part, Phase 2/3 multi-center, double blinded, placebo-controlled study to assess the safety, tolerability, and efficacy of oral niclosamide (ANA001) in moderate and severe hospitalized COVID-19 patients compared to placebo.

Interventions

Niclosamide is an antihelmintic with in-vitro antiviral activity

DRUGPlacebo

Matching hydroxypropylmethylcellulose HPMC capsules with no active ingredients

Sponsors

NeuroBo Pharmaceuticals Inc.
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

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

Inclusion criteria

Key Inclusion Criteria: 1. Provide written informed consent prior to performing study procedures 2. Hospitalized. 3. Male or female ≥18 years of age 4. Positive for severe acute respiratory syndrome coronavirus 2 5. Presence of symptoms of lower respiratory tract infection (LRTI) including at least 1 of the following: fever, cough, sore throat, malaise, headache, muscle pain, or more significant lower respiratory tract symptoms, including shortness of breath 6. At least 1 of the following: respiratory rate (RR) ≥20 breaths per minute, room air oxygen saturation (SpO2) \<98%, requirement for supplemental oxygen, heart rate (HR) ≥90 beats per minute, or temperature \>38.3°C 7. Women of childbearing potential must agree to abstinent or use at least 1 form of contraception not including hormonal contraception from the day of screening through Day 30 Key

Exclusion criteria

1. Hospitalized but no longer requires ongoing inpatient care (i.e., discharge is anticipated in ≤24 hours) 2. Patient is not anticipated to survive \>48 hours OR is under palliative care 3. Evidence of critical illness, defined by at least 1 of the following: * Respiratory failure requiring at least 1 of the following: 1. Endotracheal intubation and mechanical ventilation, oxygen delivered by high flow nasal cannula 2. Noninvasive positive pressure ventilation (NIPVV), OR 3. Extracorporeal membrane oxygenation (ECMO) or clinical diagnosis of respiratory failure * Shock (defined by systolic blood pressure (BP) \<90 mm Hg, or diastolic blood pressure (BP) \<60 mm Hg or requiring vasopressors), OR * Multi-organ dysfunction/failure 4. Severe central nervous system (CNS) conditions 5. Chronic kidney disease requiring dialysis 6. Known allergy to the study drug or salicylate containing medications. 7. Suspected and/or confirmed pregnancy or breastfeeding 8. Current or planned participation in any other clinical trial of a treatment being developed under a US investigational new drug (IND) or emergency use authorization (EUA). 9. Patients receiving chemotherapeutic agents and/or immunomodulators (including monoclonal antibodies (Mabs) or plasma transfusions) for chronic disease conditions.

Design outcomes

Primary

MeasureTime frameDescription
Number of Subjects Experiencing TEAEsRandomization to Day 60Incidence of Treatment Emergent Adverse Events (TEAEs)
Number of Subjects Experiencing TESAEsRandomization to Day 60Incidence of Treatment Emergent Serious Adverse Events (TESAEs)

Secondary

MeasureTime frameDescription
Median Time to 2-point Improvement WHO Clinical Improvement ScaleRandomization to Day 60Median Time to 2-point Improvement in WHO Ordinal Scale for Clinical Improvement. This is a 9 point ordinal scale with 0 indicating No clinical or virological evidence of infection and 8 indicating Death
Median Time to Resolution of COVID-19 SymptomsRandomization to Day 60Median time (in days) to resolution of subjective symptoms assessed by the Investigator to be potentially due to COVID-19 including: fever, cough (productive or non-productive), sore throat, malaise, headache, muscle pain, gastrointestinal symptoms (i.e., nausea, vomiting, or diarrhea), shortness of breath (with or without exertion), and respiratory distress
AUC 0-t (h*ng/mL)Pre- dose (within 30mins prior to each dose) and 1, 4 and 8 hours after each dose.Area under the drug concentration (h\*ng/mL) (AUC) vs time curve on Days 1 and 2
Cmax (ng/mL)Pre- dose (within 30mins prior to each dose) and 1, 4 and 8 hours after each dose.Maximum post dose plasma drug concentration on \[Cmax (ng/mL)\] Days 1 and 2
Tmax (h)Pre- dose (within 30mins prior to each dose) and 1, 4 and 8 hours after each dose.Time to maximum post dose plasma drug concentration on \[Tmax (h)\] Days 1 and 2
Median Time to Time-to-Viral Load UndetectableRandomization to Day 60Median number of days to viral load undetectable by nasopharyngeal (NP) swab
Median Time to Hospital DischargeRandomization to Day 60Median time until patient is discharged from hospital. Discharge is defined as a score of 1 or 2 in the WHO Ordinal Scale for Clinical Improvement. This is a 9 point ordinal scale with 0 indicating No clinical or virological evidence of infection and 8 indicating Death.

Countries

United States

Participant flow

Participants by arm

ArmCount
ANA001
Subjects in the ANA001 treatment arm will receive 1,000 mg (4 capsules; 250 mg each) by mouth twice per day for 7 consecutive days with a meal. If the participant requires mechanical ventilation over the course of the study, ANA001 may be administered via nasogastric (NG), percutaneous endoscopic gastrostomy (PEG) or orogastric (OG) tube and, if possible, should be administered with a scheduled nasogastric (NG) or orogastric (OG) feeding. Niclosamide: Niclosamide is an antihelmintic with in-vitro antiviral activity
25
Matching Placebo
Subjects in the comparator arm will receive matching placebo (hydroxypropylmethylcellulose (HPMC)) (4 capsules, by mouth twice a day) for the 7-day treatment duration. Placebo: Matching hydroxypropylmethylcellulose HPMC capsules with no active ingredients
24
Total49

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyAdverse Event22
Overall StudyNot Dosed21
Overall StudyWithdrawal by Subject66

Baseline characteristics

CharacteristicANA001Matching PlaceboTotal
Age, Customized
18 -<40 Years
5 Participants3 Participants8 Participants
Age, Customized
40-<65 Years
13 Participants15 Participants28 Participants
Age, Customized
>/=65 Years
7 Participants6 Participants13 Participants
Baseline WHO Ordinal Scale for Clinical Improvement
Baseline World Health Organisation (WHO) Ordinal Scale for Clinical Improvement= 4
3 Participants4 Participants7 Participants
Baseline WHO Ordinal Scale for Clinical Improvement
Baseline World Health Organisation (WHO) Ordinal Scale for Clinical Improvement = 5
19 Participants17 Participants36 Participants
Baseline WHO Ordinal Scale for Clinical Improvement
Baseline World Health Organisation (WHO) Ordinal Scale for Clinical Improvement = 6
1 Participants2 Participants3 Participants
Baseline WHO Ordinal Scale for Clinical Improvement
Baseline World Health Organisation (WHO) Ordinal Scale for Clinical Improvement = Missing
2 Participants1 Participants3 Participants
Days from First COVID-19 Symptom to Randomisation7.6 Days
STANDARD_DEVIATION 4.12
7.7 Days
STANDARD_DEVIATION 3.53
7.7 Days
STANDARD_DEVIATION 3.81
Ethnicity (NIH/OMB)
Hispanic or Latino
8 Participants4 Participants12 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
17 Participants18 Participants35 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants2 Participants2 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants1 Participants1 Participants
Race (NIH/OMB)
Asian
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Black or African American
3 Participants4 Participants7 Participants
Race (NIH/OMB)
More than one race
1 Participants0 Participants1 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
1 Participants1 Participants2 Participants
Race (NIH/OMB)
White
20 Participants18 Participants38 Participants
Sex: Female, Male
Female
13 Participants10 Participants23 Participants
Sex: Female, Male
Male
12 Participants14 Participants26 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
2 / 223 / 23
other
Total, other adverse events
16 / 2212 / 23
serious
Total, serious adverse events
3 / 226 / 23

Outcome results

Primary

Number of Subjects Experiencing TEAEs

Incidence of Treatment Emergent Adverse Events (TEAEs)

Time frame: Randomization to Day 60

Population: Safety Analysis Set: Includes all randomized participants, classified according to the actual treatment received regardless of randomization assignment, who received any amount of study drug and have at least one post-baseline safety evaluation. This is the analysis population for all planned safety analyses.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
ANA001Number of Subjects Experiencing TEAEsNo. of Subjects with any TEAE16 Participants
ANA001Number of Subjects Experiencing TEAEsNo. of Subjects with Mild (Grade 1) TEAEs9 Participants
ANA001Number of Subjects Experiencing TEAEsNo. of Subjects with Moderate (Grade 2) TEAEs5 Participants
ANA001Number of Subjects Experiencing TEAEsNo. of Subjects with Severe (Grade 3) TEAEs0 Participants
ANA001Number of Subjects Experiencing TEAEsNo. of Subjects with Life-Threatening (Grade 4) TEAEs0 Participants
ANA001Number of Subjects Experiencing TEAEsNo. of Subjects with Death (Grade 5) TEAEs2 Participants
Matching PlaceboNumber of Subjects Experiencing TEAEsNo. of Subjects with Life-Threatening (Grade 4) TEAEs1 Participants
Matching PlaceboNumber of Subjects Experiencing TEAEsNo. of Subjects with any TEAE12 Participants
Matching PlaceboNumber of Subjects Experiencing TEAEsNo. of Subjects with Severe (Grade 3) TEAEs2 Participants
Matching PlaceboNumber of Subjects Experiencing TEAEsNo. of Subjects with Mild (Grade 1) TEAEs2 Participants
Matching PlaceboNumber of Subjects Experiencing TEAEsNo. of Subjects with Death (Grade 5) TEAEs3 Participants
Matching PlaceboNumber of Subjects Experiencing TEAEsNo. of Subjects with Moderate (Grade 2) TEAEs4 Participants
Primary

Number of Subjects Experiencing TESAEs

Incidence of Treatment Emergent Serious Adverse Events (TESAEs)

Time frame: Randomization to Day 60

Population: Safety Analysis Set: Includes all randomized participants, classified according to the actual treatment received regardless of randomization assignment, who received any amount of study drug and have at least one post-baseline safety evaluation. This is the analysis population for all planned safety analyses.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
ANA001Number of Subjects Experiencing TESAEs3 Participants
Matching PlaceboNumber of Subjects Experiencing TESAEs6 Participants
Secondary

AUC 0-t (h*ng/mL)

Area under the drug concentration (h\*ng/mL) (AUC) vs time curve on Days 1 and 2

Time frame: Pre- dose (within 30mins prior to each dose) and 1, 4 and 8 hours after each dose.

Population: Day 1 data only available for 7 subjects

ArmMeasureGroupValue (MEAN)Dispersion
ANA001AUC 0-t (h*ng/mL)Day 1: AUC 0-t (h*ng/mL)1728.6 h*ng/mLStandard Deviation 1410.21
ANA001AUC 0-t (h*ng/mL)Day 2: AUC 0-t (h*ng/mL)2839.0 h*ng/mLStandard Deviation 1702.25
Secondary

Cmax (ng/mL)

Maximum post dose plasma drug concentration on \[Cmax (ng/mL)\] Days 1 and 2

Time frame: Pre- dose (within 30mins prior to each dose) and 1, 4 and 8 hours after each dose.

Population: Day 1 data only available for 7 subjects

ArmMeasureGroupValue (MEAN)Dispersion
ANA001Cmax (ng/mL)Day 1: Cmax (ng/mL)348.06 ng/mLStandard Deviation 212.343
ANA001Cmax (ng/mL)Day 2: Cmax (ng/mL)435.91 ng/mLStandard Deviation 204.059
Secondary

Median Time to 2-point Improvement WHO Clinical Improvement Scale

Median Time to 2-point Improvement in WHO Ordinal Scale for Clinical Improvement. This is a 9 point ordinal scale with 0 indicating No clinical or virological evidence of infection and 8 indicating Death

Time frame: Randomization to Day 60

ArmMeasureValue (MEDIAN)
ANA001Median Time to 2-point Improvement WHO Clinical Improvement Scale4.15 Days
Matching PlaceboMedian Time to 2-point Improvement WHO Clinical Improvement Scale13.91 Days
Secondary

Median Time to Hospital Discharge

Median time until patient is discharged from hospital. Discharge is defined as a score of 1 or 2 in the WHO Ordinal Scale for Clinical Improvement. This is a 9 point ordinal scale with 0 indicating No clinical or virological evidence of infection and 8 indicating Death.

Time frame: Randomization to Day 60

ArmMeasureValue (MEDIAN)
ANA001Median Time to Hospital Discharge6.03 Days
Matching PlaceboMedian Time to Hospital Discharge13.92 Days
Secondary

Median Time to Resolution of COVID-19 Symptoms

Median time (in days) to resolution of subjective symptoms assessed by the Investigator to be potentially due to COVID-19 including: fever, cough (productive or non-productive), sore throat, malaise, headache, muscle pain, gastrointestinal symptoms (i.e., nausea, vomiting, or diarrhea), shortness of breath (with or without exertion), and respiratory distress

Time frame: Randomization to Day 60

ArmMeasureValue (MEDIAN)
ANA001Median Time to Resolution of COVID-19 Symptoms17 Days
Matching PlaceboMedian Time to Resolution of COVID-19 Symptoms16 Days
Secondary

Median Time to Time-to-Viral Load Undetectable

Median number of days to viral load undetectable by nasopharyngeal (NP) swab

Time frame: Randomization to Day 60

ArmMeasureValue (MEDIAN)
ANA001Median Time to Time-to-Viral Load Undetectable13.09 Days
Matching PlaceboMedian Time to Time-to-Viral Load Undetectable13.1 Days
Secondary

Tmax (h)

Time to maximum post dose plasma drug concentration on \[Tmax (h)\] Days 1 and 2

Time frame: Pre- dose (within 30mins prior to each dose) and 1, 4 and 8 hours after each dose.

Population: Day 1 data only available for 7 subjects

ArmMeasureGroupValue (MEAN)Dispersion
ANA001Tmax (h)Day 1: Tmax (h)4.884 (h)Standard Deviation 2.3139
ANA001Tmax (h)Day 2: Tmax (h)3.983 (h)Standard Deviation 2.4002

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