Skip to content

Doxazosin to Prevent Severe COVID-19 (CALM-COVID Trial)

Alpha-1 Adrenergic Receptor Antagonism to Prevent Cytokine Storm Syndrome and Severe COVID-19: A Pragmatic Randomized, Double-Blind Phase 2 Study Comparing the Efficacy of Doxazosin vs. Placebo for SARS-CoV-2 infection. - CALM-COVID Trial

Status
Active, not recruiting
Phases
Phase 2
Study type
Interventional
Source
CTRI
Registry ID
CTRI/2021/09/036099
Enrollment
994
Registered
2021-09-01
Start date
Unknown
Completion date
Unknown
Last updated
2025-10-13

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

Conditions

Health Condition 1: B972- Coronavirus as the cause of diseases classified elsewhere

Interventions

Intervention1: Doxazosin mesylate: Doxazosin mesylate and standard of care Doxazosin Dose Day 1 -1 mg Day 2- 1 mg Day 3 – 2 mg Day 4 – 2 mg Day 5 – 4 mg Day 6- 4 mg Day 7 – 4 mg Day 8 – 6 mg Day 9 –

Sponsors

Johns Hopkins University School of Medicine
Lead Sponsor

Eligibility

Inclusion criteria

Inclusion criteria: 1. Subjects must be 45 years of age or older 2. Subjects have symptoms of COVID-19 and have Mild disease not requiring hospitalization 3. Subjects have an approved positive test for SARS-CoV-2 and symptom onset within 6 days of start of treatment 4. Subject must have indicated interest in participating in the clinical trial and provided informed consent to participate in the CALM-COVID trial specifically.

Exclusion criteria

Exclusion criteria: 1. Female subjects who identify as pregnant, self-reported positive pregnancy testing, or who are breastfeeding during the study period 2. Age >85 years 3. Subjects with COVID-19 and Moderate or Severe disease 4. Subjects receiving supplemental oxygen at baseline 5. Already receiving an effective therapy for early COVID-19 (monoclonal antibodies) at time of enrollment or enrolled in another clinical treatment trial for COVID-19 6. Subjects who have been administered one or more doses of any approved SARS-CoV-2 vaccine. 7. Known history of known orthostatic hypotension, unexplained history of syncope, postural orthostatic tachycardia syndrome (POTS), neurally-mediated hypotension (within the last year), heart failure (NYHA III or IV or exacerbation in past 2 months), myocardial infarction (within 6 months), stable or unstable angina, coronary artery bypass surgery (within 6 months), stroke (within 6 months), symptomatic carotid artery disease, or moderate to severe mitral or aortic stenosis, known moderate or severe hepatic impairment (Child-Pugh B and C) 8.Systolic blood pressure of 9. Systemic use of immunosuppressive medication (including corticosteroids and glucocorticoids), use of rituximab within 6 months prior to enrollment, use of alpha-1 adrenergic receptor antagonists, combined alpha-1/beta- adrenergic receptor antagonists, sotalol, clonidine, phosphodiesterase type 5 inhibitors, nitrates, asenapine, alpha-methyldopa 10.Allergy or intolerance to quinazolines (including doxazosin, prazosin, terazosin)

Design outcomes

Primary

MeasureTime frame
Evaluate the efficacy of treatment with doxazosin (given for at least 2 doses) versus placebo to prevent deterioration of COVID-19 to Moderate/Severe disease in subjects testing positive for SARS-CoV-2 and presenting with Mild disease at the time of enrollment.Timepoint: After the treatment duration of 14 days

Secondary

MeasureTime frame
1.Assessing shift in the ordinal scale of clinical status (scores 1-9) to less severe disease among those randomized to doxazosin plus standard of care as compared to placebo plus standard of care. The ordinal scale is an assessment of the clinical status at different time frames. 2.Time to meaningful recovery at 14 and 28 days. Clinical ordinal scale progression improved by one category and sustained for at least 2 consecutive days. 3.COVID-19 symptom severity (Daily Symptom Scale) on day 0, 14 or until hospitalization, 28 day. 4.Time to resolution of COVID-19 symptoms on day 0, 14 or until hospitalization, 28 day. 5.Frequency and severity of Post-Acute Sequelae of SARS-CoV-2 Infection (PASC) after 3 months and 6 monthsTimepoint: After the treatment duration of 14 days, 28 days, 3 months and 6 months

Countries

India

Contacts

Public ContactDr Pallavi Ghana

Strand Life Sciences Private Limited

aditi.c@strandls.com

Outcome results

None listed

Source: CTRI (via WHO ICTRP) · Data processed: Feb 4, 2026