Hydroxychloroquine for the Treatment of Mild COVID-19 Disease (COMIHY)
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ClinicalTrials.gov Identifier: NCT04340544 |
Recruitment Status :
Terminated
(It appeared to be impossible for the study centres to recruit the targeted number of patients, due to reduced incidence and reduced acceptance to IMP)
First Posted : April 9, 2020
Last Update Posted : November 2, 2020
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The current outbreak of coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome corona virus 2 (SARS-CoV-2) is a global health emergency with a case fatality rate so far approximately 4% and a growing number of confirmed cases (>57.000) in Germany. There is no data available on the efficacy of antiviral agents for the treatment of COVID-19. In-vitro data show that hydroxychloroquine can inhibit SARS-CoV-2 [1] replication and anecdotal reports from Chinese COVID-19 patients [2, 3] suggest that chloroquine is a good candidate for treatment. No data have been published and reported evidence is based on non-controlled use of hydroxychloroquine.
The aim of this placebo-controlled trial is to assess the effect of hydroxychloroquine on duration of symptoms in mild COVID-19 patients and time of virus shedding as an important tool to reduce the risk of further community transmissions. This data will inform practice for the design of larger trials on clinical efficacy of hydroxychloroquine in the treatment and post- and preexposure prophylaxis of COVID-19 and as a tool for reduction of community transmission.
Condition or disease | Intervention/treatment | Phase |
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COVID-19 | Drug: Hydroxychloroquine Drug: Placebo | Phase 2 |

Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 17 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor) |
Primary Purpose: | Treatment |
Official Title: | Hydroxychloroquine for the Treatment of Mild COVID-19 Disease |
Actual Study Start Date : | April 22, 2020 |
Actual Primary Completion Date : | October 12, 2020 |
Actual Study Completion Date : | October 12, 2020 |

Arm | Intervention/treatment |
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Experimental: Hydroxychloroquine
Hydroxychloroquine 600mg daily for 7 days
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Drug: Hydroxychloroquine
Hydroxychloroquine Sulfate is an anti-malarial and anti-rheumatic drug and seems to be a potential candidate for the treatment of COVID-19 since it is able to block virus infection by increasing the endosomal pH, required for virus/cell fusion, it affects the activation of p38 mitogen-activated protein kinase (MAPK), involved in the replication of HCoV-229E and can interfere with the terminal glycosylation of ACE2, thus inhibiting SARS-CoV-2 infection. |
Placebo Comparator: Placebo
Equivalent number of placebo capsules
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Drug: Placebo
Placebo capsules |
- Difference in time to resolution of clinical signs and symptoms of mild COVID-19 treated with hydroxychloroquine or placebo as assessed by daily self-assessment [ Time Frame: 28±2 days ]
- Difference between hydroxychloroquine- and placebotreated patients on an ordinal outcome scale until Day 28 (death, admission to intensive care, hospitalization, continuing disease, recovered) [ Time Frame: 28±2 days ]
- All-cause mortality within 28 days [ Time Frame: 28±2 days ]
- Proportion of patients with negative COVID-19 PCR test at day 14 in per protocol population as per throat swab [ Time Frame: 28±2 days ]
- Change in COVID-19 virus load from baseline to day 14 [ Time Frame: 28±2 days ]

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.
Ages Eligible for Study: | 18 Years to 99 Years (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Must be ≥18 years at the time of signing the informed consent
- Understand and voluntarily sign an informed consent document prior to any study related assessments/procedures
- Able to adhere to the study visit schedule and other protocol requirements
- Mild COVID-19 with outpatient management as decided by the treating physician
- Early warning score for 2019-nCoV infected patients ≤ 5
- Females of childbearing potential (FCBP1) must agree
- to utilize two reliable forms of contraception simultaneously or practice complete abstinence from heterosexual contact for at least 28 days before starting study drug, while participating in the study (including dose interruptions), and for at least 28 days after study treatment discontinuation and must agree to regular pregnancy testing during this timeframe
- to abstain from breastfeeding during study participation and 28 days after study drug discontinuation
- All subjects must agree to refrain from donating blood while on study drug and for 28 days after discontinuation from this study treatment
- All subjects must agree not to share medication
Exclusion Criteria:
- Requirement for oxygen administration
- Shortness of breath in resting position
- Creatinin > 2.0 mg/dl
- Women during pregnancy and lactation
- Participation in other clinical trials or observation period of competing trials
- Active or clinically significant cardiac disease including congestive heart failure (New York Heart Association Class III or higher)
- History or current evidence of clinically significant cardiac arrhythmia except atrial fibrillation or paroxysmal supraventricular tachycardia
- Use of concomitant medications that prolong the QT/QTc interval
- Physician decision that involvement in the study is not in the patient´s best interest

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT04340544
Germany | |
Institute for Tropical Medicine | |
Tübingen, Germany, 72074 |
Responsible Party: | University Hospital Tuebingen |
ClinicalTrials.gov Identifier: | NCT04340544 |
Other Study ID Numbers: |
COMIHY |
First Posted: | April 9, 2020 Key Record Dates |
Last Update Posted: | November 2, 2020 |
Last Verified: | April 2020 |
Studies a U.S. FDA-regulated Drug Product: | No |
Studies a U.S. FDA-regulated Device Product: | No |
COVID-19 Respiratory Tract Infections Infections Pneumonia, Viral Pneumonia Virus Diseases Coronavirus Infections Coronaviridae Infections Nidovirales Infections RNA Virus Infections |
Lung Diseases Respiratory Tract Diseases Hydroxychloroquine Antimalarials Antiprotozoal Agents Antiparasitic Agents Anti-Infective Agents Enzyme Inhibitors Molecular Mechanisms of Pharmacological Action Antirheumatic Agents |