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COVID-19 PrEP HCW HCQ Study

Off Label Study to Evaluate the Efficacy of HCQ for Pre-exposure Prophylaxis (PrEP) to Prevent Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) Infection Among Health Care Workers (HCWs) Who Are at High Risk of Occupational Exposure to SARS-CoV-2

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04354870
Enrollment
130
Registered
2020-04-21
Start date
2020-04-03
Completion date
2020-10-01
Last updated
2022-12-14

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

Conditions

COVID-19

Brief summary

Off label study to evaluate the efficacy of HCQ for pre-exposure prophylaxis (PrEP) to prevent severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. 350 participants will be assigned to the group that takes HCQ or the group that opts to not take the study medication. Participants will be NYULH HCW at high risk for occupational exposure to SARS-CoV-2. Study timepoints will include screening/enrollment, 30 day, 60 day, and 90 day visits. Questionnaires, and DBS will be collected in all timepoints.

Detailed description

Hydroxychloroquine (HCQ) is licensed for the chemoprophylaxis and treatment of malaria and as a disease modifying antirheumatic drug. It has a long history of being safe and well tolerated at typical doses. HCQ has antiviral activity in vitro against coronaviruses, and specifically Covid-19. This study is designed to evaluate the efficacy of hydroxychloroquine (HCQ) for pre exposure prophylaxis (PrEP) to prevent severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection among health care workers at high risk of occupational exposure to SARS-CoV-2 compared to the eligible cohort that declines treatment.

Interventions

Loading dose: 600 mg, oral, 1 day Maintenance dose: 200 mg, oral, daily, for 90 days

Sponsors

NYU Langone Health
Lead SponsorOTHER

Study design

Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Masking description

Open Label

Intervention model description

Total number of participant: 350 (Group A and B) * Group A: projected 300 (HCW choose to be provided HCQ) * Group B: projected 50 (HCW choose not to be provided HCQ)

Eligibility

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

Inclusion criteria

for Group A and B * Men or women ages ≥18 years NYULH health care worker who meets one of the following criteria 1. Involved in an aerosol generating procedure (nasopharyngeal specimen collection, tracheal intubation, nebulizer treatment, open airway suctioning, collection of sputum, tracheostomy, bronchoscopy, CPR) on a confirmed COVID-19 patient while wearing PPE 2. Direct bedside care of confirmed COVID-19 patient while wearing PPE for 3 or more shifts in a 7 day period 3. Direct care of PUIs in the ED or other inpatient unit while wearing PPE for 3 or more shifts in a 7 day period * Willing and able to provide informed consent

Exclusion criteria

for Group A only : * Known hypersensitivity to hydroxychloroquine or chloroquine * Known diagnosis of COVID-19 * Concomitant use of 1. amiodarone 2. digoxin 3. flecainide 4. procainamide 5. propafenone * History of Torsades de pontes * History of retinal disease * Known chronic kidney disease ≥ stage 4 * Congenital prolonged QTc interval syndrome (Jervell and Lange-Nielsen syndrome, Romano-Ward syndrome)

Design outcomes

Primary

MeasureTime frameDescription
Change From Baseline in the Number of Participants With Seroconversion to SARS-CoV-2 at 1 MonthBaseline to 1 month post-baselineAntibody titers will be measured to determine seroconversion, a binomial endpoint defined by a four-fold increase in antibody titers compared to baseline.
Number of Participants With Symptomatic vs. Asymptomatic Seroconversion4 Weeks Prior to BaselineTo characterize whether high-risk HCW who seroconvert to SARS-CoV-2 have asymptomatic infection or report symptoms of COVID-19 in the 4 weeks preceding seroconversion (assessed by symptom questionnaire).

Secondary

MeasureTime frameDescription
Number of Participants With of AEs or SAEs Possibly, Probably, or Definitely Related to HCQ Upon Study Termination TimeDay 90To assess the tolerability of hydroxychloroquine SARS-CoV-2 PrEP in this population

Countries

United States

Participant flow

Participants by arm

ArmCount
HCQ Group
Approximately 300 Health Care Workers (HCW) who choose to be provided HCQ Hydroxychloroquine (HCQ): Loading dose: 600 mg, oral, 1 day Maintenance dose: 200 mg, oral, daily, for 90 days
35
Control Group
approximately 50 HCW who choose not to be provided HCQ
14
Total49

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyDid not complete all study visits65
Overall StudyLost to Follow-up3212
Overall StudyWithdrawal by Subject1016

Baseline characteristics

CharacteristicControl GroupTotalHCQ Group
Age, Continuous43.7 years43.7 years43.6 years
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants2 Participants2 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
14 Participants47 Participants33 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
5 Participants10 Participants5 Participants
Race (NIH/OMB)
Black or African American
0 Participants0 Participants0 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants3 Participants3 Participants
Race (NIH/OMB)
White
9 Participants36 Participants27 Participants
Sex: Female, Male
Female
9 Participants28 Participants19 Participants
Sex: Female, Male
Male
5 Participants21 Participants16 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 830 / 47
other
Total, other adverse events
8 / 830 / 47
serious
Total, serious adverse events
0 / 830 / 47

Outcome results

Primary

Change From Baseline in the Number of Participants With Seroconversion to SARS-CoV-2 at 1 Month

Antibody titers will be measured to determine seroconversion, a binomial endpoint defined by a four-fold increase in antibody titers compared to baseline.

Time frame: Baseline to 1 month post-baseline

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
HCQ GroupChange From Baseline in the Number of Participants With Seroconversion to SARS-CoV-2 at 1 Month4 Participants
Control GroupChange From Baseline in the Number of Participants With Seroconversion to SARS-CoV-2 at 1 Month2 Participants
Primary

Number of Participants With Symptomatic vs. Asymptomatic Seroconversion

To characterize whether high-risk HCW who seroconvert to SARS-CoV-2 have asymptomatic infection or report symptoms of COVID-19 in the 4 weeks preceding seroconversion (assessed by symptom questionnaire).

Time frame: 4 Weeks Prior to Baseline

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
HCQ GroupNumber of Participants With Symptomatic vs. Asymptomatic SeroconversionSymptomatic Seroconversion1 Participants
HCQ GroupNumber of Participants With Symptomatic vs. Asymptomatic SeroconversionAsymptomatic Seroconversion3 Participants
Control GroupNumber of Participants With Symptomatic vs. Asymptomatic SeroconversionSymptomatic Seroconversion2 Participants
Control GroupNumber of Participants With Symptomatic vs. Asymptomatic SeroconversionAsymptomatic Seroconversion0 Participants
Secondary

Number of Participants With of AEs or SAEs Possibly, Probably, or Definitely Related to HCQ Upon Study Termination Time

To assess the tolerability of hydroxychloroquine SARS-CoV-2 PrEP in this population

Time frame: Day 90

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
HCQ GroupNumber of Participants With of AEs or SAEs Possibly, Probably, or Definitely Related to HCQ Upon Study Termination Timewith AEs Related to HCQ8 Participants
HCQ GroupNumber of Participants With of AEs or SAEs Possibly, Probably, or Definitely Related to HCQ Upon Study Termination Timewith SAEs Related to HCQs0 Participants
Control GroupNumber of Participants With of AEs or SAEs Possibly, Probably, or Definitely Related to HCQ Upon Study Termination Timewith AEs Related to HCQ0 Participants
Control GroupNumber of Participants With of AEs or SAEs Possibly, Probably, or Definitely Related to HCQ Upon Study Termination Timewith SAEs Related to HCQs0 Participants

Source: ClinicalTrials.gov · Data processed: Feb 11, 2026