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Hydroxychloroquine to Prevent COVID-19 Disease Amongst Healthcare Workers

Hydroxychloroquine to Prevent COVID-19 Disease Amongst Healthcare Workers (PROVIDE): A Parallel Randomized Controlled Trial

Status
Withdrawn
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04371523
Acronym
PROVIDE
Enrollment
0
Registered
2020-05-01
Start date
2020-05-01
Completion date
2020-08-30
Last updated
2021-09-27

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

Conditions

Corona Virus Infection

Brief summary

The objectives of PROVIDE are to: 1. Determine if prophylactic once weekly hydroxychloroquine reduces the incidence of conversion from SARS-2-CoVnasopharyngeal swab negative to positive 2. To determine if weekly prophylactic hydroxychloroquine reduced the severity of COVID-19 symptoms 3. To determine the safety of taking weekly prophylactic hydroxychloroquine

Interventions

DRUGApo-Hydroxychloroquine

Hydroxychloroquine sulfate 400mg PO BID on day one, then 400mg PO weekly, to be taken with meals for two months total.

DRUGMatched Placebo

Matching Placebo

Sponsors

St. Joseph's Healthcare Hamilton
Lead SponsorOTHER

Study design

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

Masking description

Neither the participant, nor the investigators, study coordinators, adjudicator, and data analysts will know if the subject is receiving the hydroxychloroquine or placebo.

Intervention model description

Parallel two-armed, multi-centred, blinded, stratified, superiority, randomized controlled trial

Eligibility

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

Inclusion criteria

* 18 years of age or older to participate. * Healthcare workers with primary practice in intensive care unit, general internal medicine, * COVID-19 testing centres, emergency rooms, and nursing homes. * COVID\_19 symptom free at the time of randomization and have a negative diagnostic swab.

Exclusion criteria

* Known COVID-19 positivity defined as: a laboratory confirmed case as defined by the local public health institutes * Suspected COVID-19 positivity defined as possessing symptoms consistent with COVID-19 infections such as: headache, fever, nausea, vomiting, diarrhea, dyspnea, dry cough * Healthcare workers with pre-existing retinopathy or serious visual problems * Healthcare workers with known malignancies receiving active chemotherapy or immune modifying medications * Healthcare workers with known autoimmune disorders * Healthcare workers with known QT prolongation * History of ventricular arrhythmias * Participants at risk of malignant arrythmias ○ At risk defined as: A sudden loss of consciousness with injury; anyone in their immediate family, under the age of 45year, with sudden cardiac death; anyone family history of long QT syndrome * Known sensitivity/allergy to hydroxychloroquine * Healthcare workers that are currently pregnant * Healthcare workers that are already taking chloroquine or hydroxychloroquine * Healthcare workers on colchicine or any other anti-viral medication * Healthcare workers taking a medication that may interact with hydroxychloroquine (see table below * Inability to take oral medications * Inability to provide written consent * Known G6PD deficiency

Design outcomes

Primary

MeasureTime frameDescription
Positive for SARS-CoV-28 weeksThe number of HCW that tested positive for SARS-CoV-2

Secondary

MeasureTime frameDescription
Intensive care unit admissionsat any time after first dose to hospital discharge, truncated at 60 daysThe number of HCW that required intensive care unit admission
Intubation and mechanical ventilationat any time after first dose, truncated at 60 daysThe number of HCW that required intubation and mechanical ventilation
ICU length of stayfrom randomization to hospital discharge, truncated at 60 daysnumber of days admitted to the ICU
Hospital admissionsat any time after first dose to hospital discharge, truncated at 60 daysThe number of HCW that required hospital admission secondary to SARS-CoV-2
Mortalityfrom randomization to 60 daysDeath
Incidence of adverse eventsfrom randomization to 60 daysGastrointestinal symptoms (abdominal pain, diarrhea, nausea, vomiting), Hypoglycemia, Abdominal LFTs, Angioedema, Opthalmic (corneal changes, decreased visual acuity, macular degeneration, retinal changes), Bronchospasm
Hospital length of stayfrom randomization to hospital discharge, truncated at 60 daysnumber of days admitted to the hospital

Countries

Canada

Outcome results

None listed

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