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Assessment of the Efficacy of Calcium Dobesilate vs. Placebo on SARS-CoV-2 Viral Load Amongst Outpatients With COVID-19.

Sponsor
Hervé SPECHBACH (Other)
Overall Status
Not yet recruiting
CT.gov ID
NCT05305508
Collaborator
OM Pharma (Industry)
74
Enrollment
1
Location
2
Arms
10
Anticipated Duration (Months)
7.4
Patients Per Site Per Month

Study Details

Study Description

Brief Summary

The purpose of this study is to evaluate the efficacy and safety of CaD in reducing SARS-CoV-2 viral load in non-hospitalized adult patients diagnosed with COVID-19, documented with a positive SARS-CoV-2 PCR and with the occurrence of COVID-19 symptoms.

Condition or Disease Intervention/Treatment Phase
Phase 2

Detailed Description

This study is a phase II, randomized, double-blind, placebo-controlled, monocenter trial. The study will assess the efficacy and safety of CaD compared to placebo in reducing SARS-CoV-2 viral load in non-hospitalized adult patients diagnosed with COVID-19, as well as monitoring symptoms severity, progression of the disease to severe form, and persistence of symptoms.

The treatment period is seven consecutive days, followed by a 12-weeks observational period without treatment administration.

Enrolled patients will be randomized, in a ratio of 1:1 into the following treatment groups:

  • IMP arm: patients will receive 2 x 2 capsules of Calcium Dobesilate (CaD) 500 mg (total of 2000 mg) daily for seven consecutive days

  • Placebo arm: patients will receive 2 x 2 capsules of matching placebo (Mannitol 500 mg) daily for seven consecutive days.

Study Design

Study Type:
Interventional
Anticipated Enrollment :
74 participants
Allocation:
Randomized
Intervention Model:
Parallel Assignment
Masking:
Double (Participant, Investigator)
Masking Description:
The central pharmacy of the HUG is responsible for preparation of the randomization list and of the blinding of the study treatments. Randomization will be done in variable-sized blocks (size 4) in random sequence. Pharmacists will be un-blinded. Care providers and/or outcome assessors, nurses, clinical research associates, investigators and patients will be blinded. Participants will be allocated to either the treatment group (CaD) or placebo group at Day 1 visit through randomization process, and will be dispensed the full treatment regimen on-site, including instructions on intake and explanations of side-effects. The investigators will receive from the central pharmacy of the HUG all the study treatments and the participant's allocated treatment randomization number. Thus, the subjects who meet the eligibility criteria will dynamically be randomized at 1:1 ratio and be assigned either to the CaD or to the placebo arms during Day 1 visit.
Primary Purpose:
Treatment
Official Title:
A Randomized, Placebo-controlled, Double-blind, Monocenter, Phase II Trial to Assess the Efficacy of Calcium Dobesilate (CaD) vs. Placebo on SARS-CoV-2 Viral Load Amongst Outpatients With COVID-19.
Anticipated Study Start Date :
May 1, 2022
Anticipated Primary Completion Date :
Jan 1, 2023
Anticipated Study Completion Date :
Mar 1, 2023

Arms and Interventions

Arm Intervention/Treatment
Placebo Comparator: placebo

The comparator (placebo, Mannitol 500 mg) will be administered orally twice a day for 7 days.

Drug: Mannitol
The comparator (placebo, Mannitol 500 mg) will be administered orally twice a day for 7 days.
Experimental: Calcium Dobesilate

The CaD (Calcium Dobesilate 500 mg) will be administered orally twice a day for 7 days.

Drug: Calcium Dobesilate
The treatment (CaD, Calcium Dobesilate 500 mg) will be administered orally twice a day for 7 days.

Outcome Measures

Primary Outcome Measures

  1. Primary Outcome [baseline and day 4]

    Reduction from baseline of RT-PCR SARS-CoV-2 viral load at day 4, defined by Polymerase Chain Reaction (PCR) threshold cycles. PCR reaction happens in cycles of amplification. Inclusion criteria to enter in the study is a RT-PCR positive for SARS-CoV-2, which correspond to 25 cycles (or lower) of the RT-PCR test. The participant will be tested at day 4 after treatment to evaluate if the viral load has decreased. To do that, another RT-PCR SARS-CoV-2 will be performed. A higher value of RT-PCR cycles compared to the one obtained when the participat was diagnosed COVID-19 positive, is considered a reduction from baseline.

Secondary Outcome Measures

  1. SARS-CoV-2 Viral Load at day 8 [baseline and day 8]

    Reduction from baseline of RT-PCR SARS-CoV-2 viral load at day 8.

  2. SARS-CoV-2 Viral Load negativity [day 4, 8 and 21]

    Proportion of patients with viral load negativity or very low viral load (defined by PCR threshold cycles >32) at days 4, 8 and 21.

  3. Symptoms [day 4, 8 and 21]

    Time to acute symptom resolution after randomisation to treatment. Proportion of participants with acute symptom resolution at days 4, 8, 21.

  4. Symptoms resolution [day 4, 8 and 21]

    Proportion of participants with acute symptom resolution at days 4, 8, 21.

  5. Persistent COVID-19 symptoms [day 84]

    Proportion of patients with persistent symptoms (≥1 of the following symptoms: fatigue, headache, intermittent fever, palpitations/tachycardia, sleep disturbance, anxiety, blurred vision, depression, brain fog (difficulty concentrating), loss of memory, dizziness, tinnitus (and other hearing issues), altered smell, altered taste, shortness of breath, chest pain, cough, myalgia (and spasms), neuralgias, arthralgia (joint pain), paraesthesia, nausea, vomiting, diarrhea, constipation, abdominal pain, menstrual and period problems as well as new onset of allergies) at day 84 (week 12).

  6. Mental and physical score [baseline and 84]

    SF12 score at day 21 and day 84 (week 12) compared to day 1 (baseline).

Eligibility Criteria

Criteria

Ages Eligible for Study:
16 Years and Older
Sexes Eligible for Study:
All
Accepts Healthy Volunteers:
No
Inclusion Criteria:

  1. Documented COVID-19 diagnosis (SARS-CoV-2 positivity as assessed by PCR) ≤3 days of symptom appearance, with a CT<25.

  2. Symptoms related to Day 1 ≤ 5 days.

  3. Participant presents at least one of the following acute COVID-19 symptoms: nasal congestion or runny nose, sore throat, headache, myalgia, dry/productive cough, fever, chills, abdominal symptoms (nausea, vomiting, diarrhea, abdominal pain), fatigue, chest pain, palpitations, and shortness of breath.

  4. Participant is aged ≥ 16 years of age.

  5. Participant has provided an appropriate signed Informed consent.

Exclusion Criteria:

  1. Known hypersensitivity or allergy to any of the study products to be administered.

  2. Participation in any other investigational device or drug study within 30 days preceding study screening visit.

  3. Treatment with Calcium Dobesilate or related molecules (e.g., ethamsylate) within 30 days preceding screening visit, or current treatment with any other investigational agent(s).

  4. Breastfeeding, unless If the patient agrees to stop breastfeeding

  5. Treatment with any investigational, emergency use authorization-approved, or approved drug for COVID-19, such as, but not limited to: monoclonal antibody treatment, direct or indirect antiviral treatment, and others according to local guidelines.

  6. Any kind of disorder or medical conditions that, in the opinion of the investigators, may be associated with increased risk to the participant, may affect patients' compliance, or may interfere with study assessments or outcomes.

  7. Inability to follow and comply with study procedures.

  8. Participant has hospitalization criteria according to local guidelines (Sat < 95%, RR

  1. at the time of screening or is admitted to hospital prior to randomization
  1. Participant is, in the opinion of the investigators, likely to deteriorate in the next 24-48h and require hospitalization

Contacts and Locations

Locations

Site City State Country Postal Code
1 Division and Department of Primary Care Medicine, Geneva University Hospitals Geneva Switzerland 1211

Sponsors and Collaborators

  • Hervé SPECHBACH
  • OM Pharma

Investigators

  • Principal Investigator: Hervé SPECHBACH, MD, HUG

Study Documents (Full-Text)

None provided.

More Information

Additional Information:

Publications

Responsible Party:
Hervé SPECHBACH, Principal Investigator, Associate Assistant Physician at Primary Care Medicine department HUG, Geneva University Hospitals, University Hospital, Geneva
ClinicalTrials.gov Identifier:
NCT05305508
Other Study ID Numbers:
  • 2022-00000
First Posted:
Mar 31, 2022
Last Update Posted:
Apr 1, 2022
Last Verified:
Mar 1, 2022
Studies a U.S. FDA-regulated Drug Product:
No
Studies a U.S. FDA-regulated Device Product:
No
Keywords provided by Hervé SPECHBACH, Principal Investigator, Associate Assistant Physician at Primary Care Medicine department HUG, Geneva University Hospitals, University Hospital, Geneva
Calcium Dobesilate
Viral load
COVID-19 symptoms
Additional relevant MeSH terms:
COVID-19
Virus Diseases
Mannitol
Calcium Dobesilate
Calcium

Study Results

No Results Posted as of Apr 1, 2022