search
Back to results

Brequinar Combined With Dipyridamole in Patients With Mild to Moderate COVID-19 (CCBCRISIS04)

Primary Purpose

COVID-19

Status
Terminated
Phase
Phase 2
Locations
India
Study Type
Interventional
Intervention
Brequinar Sodium
Dipyridamole 75 MG
Placebo
Sponsored by
Clear Creek Bio, Inc.
About
Eligibility
Locations
Arms
Outcomes
Full info

About this trial

This is an interventional treatment trial for COVID-19 focused on measuring SARS-CoV-2, Oral antiviral, DHODH Inhibitor, brequinar

Eligibility Criteria

18 Years - 65 Years (Adult, Older Adult)All SexesDoes not accept healthy volunteers

Inclusion Criteria:

  1. Willing and able to provide informed consent for the trial, written, electronic, verbal, or other method deemed acceptable by the institution and IRB.
  2. Subjects between ≥18 and ≤65 years of age.
  3. Subjects found positive for SARS-CoV-2 either by rapid antigen test or by reverse transcription polymerase chain reaction (RT-PCR) using ICMR-validated kit.

    Note: Test need not be repeated in those with possession of confirmed positive report, but positive result test date must be ≤5 days of first dose of study drug.

  4. Mild or Moderate COVID-19 as per latest updated version of CLINICAL MANAGEMENT PROTOCOL for COVID-19 (in adults) released by Government of India Ministry of Health and Family Welfare Directorate General of Health Services (EMR Division).
  5. The effects of brequinar on the developing human fetus are unknown. For this reason, women of child-bearing potential and men must agree to use adequate contraception (hormonal or barrier method of birth control; abstinence) prior to study entry and for the duration of study participation. Should a woman become pregnant or suspect she is pregnant while she or her partner is participating in this study, she should inform her treating physician immediately. Men and women treated or enrolled on this protocol must also agree to use adequate contraception for the duration of study participation, and for 90 days after completion of brequinar administration.
  6. Male subjects must agree to refrain from sperm donation and female subjects must agree to refrain from ovum donation from initial study drug administration until 90 days after the last dose of brequinar.
  7. At least one non-respiratory COVID-19 symptom characterized as mild to moderate by the Investigator including but not limited to fatigue, chills, fever, body aches, nasal congestion, nausea, vomiting, or other sign or symptom commonly associated with COVID-19 in the opinion of the investigator. Symptom onset must be ≤5 days prior to first dose. Subject must have one or more signs/symptoms present at first dose.
  8. Willing to participate in the PK subset if at one of the identified sites.
  9. Able to swallow capsules.

Exclusion Criteria:

  • 1. Have an oxygen saturation of <90% while breathing ambient air. 2. Any physical examination findings and/or history of any illness that, in the opinion of the study investigator, might confound the results of the study or pose an additional risk to the subject.

    3. Nursing women or women of childbearing potential (WOCBP) with a positive pregnancy test.

    4. Treatment with another DHODH inhibitor (e.g., leflunomide, teriflunomide) or other agents known to cause bone marrow suppression leading to thrombocytopenia.

    5. Ongoing treatment with aspirin and or dipyridamole, famotidine or cimetidine. Remdesivir and ivermectin are prohibited through Study Day 8. Steroids are permitted per the guidelines.

    6. Platelets ≤125,000 cell/mm3. 7. Hemoglobin <10 gm/dL. 8. Absolute neutrophil count <1000 cells/mm3. 9. Renal dysfunction, i.e., creatinine clearance <30 mL/min. 10. AST or ALT >3 x ULN, or total bilirubin >ULN. Gilbert's Syndrome is allowed.

    11. Bleeding disorders or blood loss requiring transfusion in the six weeks preceding enrollment.

    12. Ongoing gastrointestinal ulcer, or gastrointestinal bleeding within 6 weeks of first dose.

    13. Chronic hepatitis B infection, active hepatitis C infection, active liver disease and/or cirrhosis per subject report.

    14. Heart failure, current uncontrolled cardiovascular disease, including unstable angina, uncontrolled arrhythmias, major adverse cardiac event within 6 months (e.g., stroke, myocardial infarction, hospitalization due to heart failure, or revascularization procedure).

Sites / Locations

  • RIMS - Government Medical College
  • King George Hospital
  • Global Hospital
  • Rajarajeshwari Medical College and Hospital
  • JIPMER Hospital
  • Noble Hospital
  • Panimalar Hospital

Arms of the Study

Arm 1

Arm 2

Arm 3

Arm Type

Experimental

Placebo Comparator

Experimental

Arm Label

Brequinar monotherapy

Placebo

Brequinar-Dipyridamole Combination

Arm Description

Brequinar oral capsules will be administered once daily for 5 days using a dose-escalation approach. Planned doses include 50 mg, 100 mg, 150 mg, and 200 mg. Dosing will start at 50 mg and be escalated to the next higher dose if cohort stopping rules are not met.

Placebo matching brequinar oral capsules will be administered once daily for 5 days using a dose-escalation approach. Planned doses include 50 mg, 100 mg, 150 mg, and 200 mg. Dosing will start at 50 mg and be escalated to the next higher dose if cohort stopping rules are not met.

Brequinar oral capsules will be administered once daily for 5 days using a dose-escalation approach. Planned doses include 50 mg, 100 mg, 150 mg, and 200 mg. Dosing will start at 50 mg and be escalated to the next higher dose if cohort stopping rules are not met. All subjects assigned to this arm will also receive dipyridamole 75 mg tablets TID.

Outcomes

Primary Outcome Measures

Safety and Tolerability of the Brequinar-dipyridamole Combination in COVID-19 Subjects
Frequencies of grade 3 and 4 toxicities and serious adverse events (SAEs) considered by the investigator to be related to the combination, brequinar alone or placebo alone.

Secondary Outcome Measures

Reduction of SARS-CoV-2 Levels Using qPCR Through Day 29 and at Days 4, 8, 12, 15, 22, and 29
qPCR SARS-CoV-2 levels through Day 29 and at days 4, 8, 12, 15, 22, and 29
Reduction in Time to Symptom Improvement
Percentage of subjects with symptom improvement
Reduction in Percentage of Subjects Requiring Hospital Admission/Re-admission as an In-patient for >24 Hours
Percentage of subjects hospitalized for >24 hours
Reduction in Percentage of Subjects Requiring Medical Attended Visits, e.g., Hospitalization, Emergency Room Visits, Urgent Care/Family Doctor Visits
Percentage of subjects requiring attended medical visits
Reduction in Percentage of Subjects Requiring Supplemental Support Such as Oxygen
Percentage of subjects requiring supplemental support

Full Information

First Posted
December 16, 2021
Last Updated
February 3, 2023
Sponsor
Clear Creek Bio, Inc.
search

1. Study Identification

Unique Protocol Identification Number
NCT05166876
Brief Title
Brequinar Combined With Dipyridamole in Patients With Mild to Moderate COVID-19
Acronym
CCBCRISIS04
Official Title
A Phase II, Randomized, Assessor-blind, Multicenter, Multi-dose, Placebo-controlled Study Assessing the Safety and Anti-coronavirus Response of Brequinar Combined With Dipyridamole in Patients With Mild to Moderate SARS-CoV-2 Infection.
Study Type
Interventional

2. Study Status

Record Verification Date
February 2023
Overall Recruitment Status
Terminated
Why Stopped
Low prevalence of COVID-19 in India led to lack of eligible subjects.
Study Start Date
February 1, 2022 (Actual)
Primary Completion Date
June 4, 2022 (Actual)
Study Completion Date
June 4, 2022 (Actual)

3. Sponsor/Collaborators

Responsible Party, by Official Title
Sponsor
Name of the Sponsor
Clear Creek Bio, Inc.

4. Oversight

Studies a U.S. FDA-regulated Drug Product
Yes
Studies a U.S. FDA-regulated Device Product
No
Data Monitoring Committee
Yes

5. Study Description

Brief Summary
A Phase 2 multi-center, assessor-blind, randomized study to assess the safety, tolerability, and antiviral activity of brequinar in combination with dipyridamole.
Detailed Description
This is a Phase 2 clinical trial in two parts. The first part of the trial will study up to 64 subjects using a dose escalation approach, with 16 subjects per cohort for up to 4 cohorts. The brequinar dose will start at 50 mg per day in Cohort 1, escalating in the next cohort of 16 to 100 mg, then to 150 mg, and finally to 200 mg if safety parameters are met. The dipyridamole dose will be 75 mg three times a day (TID) for subjects assigned to the combination arm for all cohorts. All subjects will also receive standard of care (SOC) for treatment of patients with COVID-19 infection. After identifying the highest brequinar dose that is safe and well tolerated, 48 subjects will be treated in an expansion part comparing the chosen brequinar dose in combination with 75 mg dipyridamole TID to the chosen dose of brequinar alone. The combination of brequinar and dipyridamole shows potent in vitro antiviral activity by blocking DHODH and the pyrimidine salvage pathway, respectively, and the purpose of this study is to establish the safety and antiviral effect of the combination. During the dose escalation part of the study, subjects with confirmed mild to moderate COVID-19 will receive 5 days of one of the following oral doses: brequinar alone, brequinar in combination with dipyridamole, or placebo. Subjects will have a Screening Visit followed as soon as possible with Study Day 1. Study visits (virtual or in person) will take place at Screening and on specified days. The visits that include bloodwork must be conducted at the study site or arrangements made for sample collection at the subject's home or other appropriate location. Other visits/visit activities for that visit may be conducted remotely using telemedicine or other remote technique. A viral load sample, vital signs (respiratory rate, heart rate, body temperature and SpO2), and a symptom assessment will be completed on specified days.

6. Conditions and Keywords

Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
COVID-19
Keywords
SARS-CoV-2, Oral antiviral, DHODH Inhibitor, brequinar

7. Study Design

Primary Purpose
Treatment
Study Phase
Phase 2
Interventional Study Model
Parallel Assignment
Model Description
All subjects will receive standard of care. In addition, subjects will be randomly assigned to one of 3 treatments: brequinar (50 mg, 100 mg, 150 mg, or 200 mg), placebo (50 mg, 100 mg, 150 mg, or 200 mg), or brequinar + dipyridamole (75 mg TID) in a 2:1:1 ratio in Part 1 of the study using a dose escalation approach. An expansion cohort is planned with the highest safe brequinar dose.
Masking
ParticipantCare ProviderInvestigator
Masking Description
All staff will be blinded to treatment with the exception of the pharmacist and any staff recording study drug administration.
Allocation
Randomized
Enrollment
26 (Actual)

8. Arms, Groups, and Interventions

Arm Title
Brequinar monotherapy
Arm Type
Experimental
Arm Description
Brequinar oral capsules will be administered once daily for 5 days using a dose-escalation approach. Planned doses include 50 mg, 100 mg, 150 mg, and 200 mg. Dosing will start at 50 mg and be escalated to the next higher dose if cohort stopping rules are not met.
Arm Title
Placebo
Arm Type
Placebo Comparator
Arm Description
Placebo matching brequinar oral capsules will be administered once daily for 5 days using a dose-escalation approach. Planned doses include 50 mg, 100 mg, 150 mg, and 200 mg. Dosing will start at 50 mg and be escalated to the next higher dose if cohort stopping rules are not met.
Arm Title
Brequinar-Dipyridamole Combination
Arm Type
Experimental
Arm Description
Brequinar oral capsules will be administered once daily for 5 days using a dose-escalation approach. Planned doses include 50 mg, 100 mg, 150 mg, and 200 mg. Dosing will start at 50 mg and be escalated to the next higher dose if cohort stopping rules are not met. All subjects assigned to this arm will also receive dipyridamole 75 mg tablets TID.
Intervention Type
Drug
Intervention Name(s)
Brequinar Sodium
Intervention Description
50 mg, 100 mg, 150 mg, 200 mg x 5 days
Intervention Type
Drug
Intervention Name(s)
Dipyridamole 75 MG
Intervention Description
75 mg TID for 5 days
Intervention Type
Drug
Intervention Name(s)
Placebo
Intervention Description
50 mg, 100 mg, 150 mg, 200 mg x 5 days
Primary Outcome Measure Information:
Title
Safety and Tolerability of the Brequinar-dipyridamole Combination in COVID-19 Subjects
Description
Frequencies of grade 3 and 4 toxicities and serious adverse events (SAEs) considered by the investigator to be related to the combination, brequinar alone or placebo alone.
Time Frame
Day 29
Secondary Outcome Measure Information:
Title
Reduction of SARS-CoV-2 Levels Using qPCR Through Day 29 and at Days 4, 8, 12, 15, 22, and 29
Description
qPCR SARS-CoV-2 levels through Day 29 and at days 4, 8, 12, 15, 22, and 29
Time Frame
Day 29
Title
Reduction in Time to Symptom Improvement
Description
Percentage of subjects with symptom improvement
Time Frame
Day 29
Title
Reduction in Percentage of Subjects Requiring Hospital Admission/Re-admission as an In-patient for >24 Hours
Description
Percentage of subjects hospitalized for >24 hours
Time Frame
Day 29
Title
Reduction in Percentage of Subjects Requiring Medical Attended Visits, e.g., Hospitalization, Emergency Room Visits, Urgent Care/Family Doctor Visits
Description
Percentage of subjects requiring attended medical visits
Time Frame
Day 29
Title
Reduction in Percentage of Subjects Requiring Supplemental Support Such as Oxygen
Description
Percentage of subjects requiring supplemental support
Time Frame
Day 29

10. Eligibility

Sex
All
Minimum Age & Unit of Time
18 Years
Maximum Age & Unit of Time
65 Years
Accepts Healthy Volunteers
No
Eligibility Criteria
Inclusion Criteria: Willing and able to provide informed consent for the trial, written, electronic, verbal, or other method deemed acceptable by the institution and IRB. Subjects between ≥18 and ≤65 years of age. Subjects found positive for SARS-CoV-2 either by rapid antigen test or by reverse transcription polymerase chain reaction (RT-PCR) using ICMR-validated kit. Note: Test need not be repeated in those with possession of confirmed positive report, but positive result test date must be ≤5 days of first dose of study drug. Mild or Moderate COVID-19 as per latest updated version of CLINICAL MANAGEMENT PROTOCOL for COVID-19 (in adults) released by Government of India Ministry of Health and Family Welfare Directorate General of Health Services (EMR Division). The effects of brequinar on the developing human fetus are unknown. For this reason, women of child-bearing potential and men must agree to use adequate contraception (hormonal or barrier method of birth control; abstinence) prior to study entry and for the duration of study participation. Should a woman become pregnant or suspect she is pregnant while she or her partner is participating in this study, she should inform her treating physician immediately. Men and women treated or enrolled on this protocol must also agree to use adequate contraception for the duration of study participation, and for 90 days after completion of brequinar administration. Male subjects must agree to refrain from sperm donation and female subjects must agree to refrain from ovum donation from initial study drug administration until 90 days after the last dose of brequinar. At least one non-respiratory COVID-19 symptom characterized as mild to moderate by the Investigator including but not limited to fatigue, chills, fever, body aches, nasal congestion, nausea, vomiting, or other sign or symptom commonly associated with COVID-19 in the opinion of the investigator. Symptom onset must be ≤5 days prior to first dose. Subject must have one or more signs/symptoms present at first dose. Willing to participate in the PK subset if at one of the identified sites. Able to swallow capsules. Exclusion Criteria: 1. Have an oxygen saturation of <90% while breathing ambient air. 2. Any physical examination findings and/or history of any illness that, in the opinion of the study investigator, might confound the results of the study or pose an additional risk to the subject. 3. Nursing women or women of childbearing potential (WOCBP) with a positive pregnancy test. 4. Treatment with another DHODH inhibitor (e.g., leflunomide, teriflunomide) or other agents known to cause bone marrow suppression leading to thrombocytopenia. 5. Ongoing treatment with aspirin and or dipyridamole, famotidine or cimetidine. Remdesivir and ivermectin are prohibited through Study Day 8. Steroids are permitted per the guidelines. 6. Platelets ≤125,000 cell/mm3. 7. Hemoglobin <10 gm/dL. 8. Absolute neutrophil count <1000 cells/mm3. 9. Renal dysfunction, i.e., creatinine clearance <30 mL/min. 10. AST or ALT >3 x ULN, or total bilirubin >ULN. Gilbert's Syndrome is allowed. 11. Bleeding disorders or blood loss requiring transfusion in the six weeks preceding enrollment. 12. Ongoing gastrointestinal ulcer, or gastrointestinal bleeding within 6 weeks of first dose. 13. Chronic hepatitis B infection, active hepatitis C infection, active liver disease and/or cirrhosis per subject report. 14. Heart failure, current uncontrolled cardiovascular disease, including unstable angina, uncontrolled arrhythmias, major adverse cardiac event within 6 months (e.g., stroke, myocardial infarction, hospitalization due to heart failure, or revascularization procedure).
Facility Information:
Facility Name
RIMS - Government Medical College
City
Srikakulam
State/Province
Andhra Pradesh
ZIP/Postal Code
532001
Country
India
Facility Name
King George Hospital
City
Visakhapatnam
State/Province
Andhra Pradesh
ZIP/Postal Code
531011
Country
India
Facility Name
Global Hospital
City
Surat
State/Province
Gujarat
ZIP/Postal Code
395006
Country
India
Facility Name
Rajarajeshwari Medical College and Hospital
City
Bangalore
State/Province
Karnataka
ZIP/Postal Code
560060
Country
India
Facility Name
JIPMER Hospital
City
Pondicherry
State/Province
Puducherry
ZIP/Postal Code
605006
Country
India
Facility Name
Noble Hospital
City
Hadapsar
State/Province
Pune
ZIP/Postal Code
411013
Country
India
Facility Name
Panimalar Hospital
City
Chennai
State/Province
Tamil Nadu
ZIP/Postal Code
600123
Country
India

12. IPD Sharing Statement

Learn more about this trial

Brequinar Combined With Dipyridamole in Patients With Mild to Moderate COVID-19

We'll reach out to this number within 24 hrs