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Trial · NCT04354428

Treatment for COVID-19 in High-Risk Adult Outpatients

NCT04354428, Phase 2, Phase 3, Terminated, University of Washington; results first posted 2022-08-08

3 sourcestrials-2026-11-12-0.5.0

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ConductScience Library. Treatment for COVID-19 in High-Risk Adult Outpatients. Trials, record NCT04354428. Release trials-2026-11-12-0.5.0, 12 Nov 2026. https://conductscience.org/library/trials/NCT04354428

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Trial

As registered on ClinicalTrials.gov, in the graph's capture of the registry.

Title
Treatment for COVID-19 in High-Risk Adult Outpatients
NCT number
NCT04354428
Status
Terminated
Phases
Phase 2, Phase 3
Enrollment
289 participants, actual
Lead sponsor
University of Washington
Conditions
COVID-19, SARS-CoV-2
Interventions
Ascorbic Acid, Hydroxychloroquine Sulfate, Azithromycin, Folic Acid, Lopinavir 200 MG / Ritonavir 50 MG [Kaletra]
First posted
2020-04-21
Last updated
2022-08-08
Results first posted
2022-08-08
Limitations and caveats
Early termination of HCQ and HCQ/AZ arms as well as lopinavir-ritonavir arms leading to small numbers of participants analyzed.

Source ClinicalTrials.gov

Registered outcomes6

Each outcome the trial registered, primary first, in ClinicalTrials.gov's words.

ListOutcomeTime frameDescription
Primary
Number of Persons With Lower Respiratory Tract Infection (LRTI), Defined as Resting Blood Oxygen Saturation (SpO2<93%) Level Sustained for 2 Readings 2 Hours Apart and Presence of Subjective Dyspnea or Cough
28 days from enrolmentResting blood oxygen saturation (SpO2\<93%) level sustained for 2 readings 2 hours apart and presence of subjective dyspnea or cough
PrimaryNumber of Participants With Hospitalization or MortalityDay 28 after enrolmentNumber of participants with hospitalization or mortality
PrimaryTime to Clearance of Nasal SARS-CoV-2Day 1 through Day 14 after enrolmentTime to clearance of nasal SARS-CoV-2, defined as 2 consecutive negative swabs
PrimaryTime to Resolution of COVID-19 Symptom Resolution in DaysDay 1 through Day 14 after enrolment
COVID-19 symptoms are based on the following criteria: * At least TWO of the following symptoms: Fever (≥ 38ºC), chills, rigors, myalgia, headache, sore throat, new olfactory and taste disorder(s), OR * At least ONE of the following symptoms: cough, shortness of breath or difficulty breathing, OR * Severe respiratory illness with at least 1 of the following: * Clinical or radiological evidence of pneumonia, OR * Acute respiratory distress syndrome (ARDS), OR * LRTI, defined by resting SpO2\<93% sustained for 2 readings 2 hours apart AND presence of subjective dyspnea or cough Death or COVID-19-related hospitalizations will count as a failure to resolve symptoms.
SecondaryNumber of Participants With Serious Adverse Events and Adverse Events Resulting in Treatment Discontinuation28 days from enrolmentSerious adverse events (including death and hospitalization) and adverse events resulting in treatment discontinuation
SecondaryCOVID-19-related Hospitalization Days28 days from enrolmentDuration of hospitalization among persons who become hospitalized with COVID-19 disease

Outcomes6

Each outcome the trial posted results for, in ClinicalTrials.gov's words.

TypeOutcomeTime framePopulationUnitsMeasured as
PRIMARY
Number of Persons With Lower Respiratory Tract Infection (LRTI), Defined as Resting Blood Oxygen Saturation (SpO2<93%) Level Sustained for 2 Readings 2 Hours Apart and Presence of Subjective Dyspnea or Cough
28 days from enrolmentThis outcome was analyzed in the first arm of the platform trial (Ascorbic Acid/Folic Acid HCQ, HCQ/AZ) among the high risk cohort only. The mITT cohort included only those without LRTI at baseline.ParticipantsCOUNT_OF_PARTICIPANTS
PRIMARYNumber of Participants With Hospitalization or MortalityDay 28 after enrolmentParticipantsCOUNT_OF_PARTICIPANTS
PRIMARYTime to Clearance of Nasal SARS-CoV-2Day 1 through Day 14 after enrolmentIncluded the mITT viral shedding cohort, which includes the mITT cohort participants who do not meet the definition for clearance of viral shedding at baseline (day 1 and 2 swabs negative).DaysMEDIAN
PRIMARYTime to Resolution of COVID-19 Symptom Resolution in DaysDay 1 through Day 14 after enrolment
mITT Disease Resolution cohort includes participants who meet the COVID-19 disease criteria on day 1. The symptom resolution rate was the primary outcome of the lopinavir-ritonavir adaptive platform arms (lopinavir-ritonavir and ascorbic acid).
DaysMEDIAN
SECONDARYNumber of Participants With Serious Adverse Events and Adverse Events Resulting in Treatment Discontinuation28 days from enrolmentAll enrolled participantsParticipantsCOUNT_OF_PARTICIPANTS
SECONDARYCOVID-19-related Hospitalization Days28 days from enrolmentDaysNUMBER

Results by group30

Each measurement the trial posted, group by group, in the words and numbers it posted.

OutcomeGroupCategoryValueSpreadUnits
Number of Persons With Lower Respiratory Tract Infection (LRTI), Defined as Resting Blood Oxygen Saturation (SpO2<93%) Level Sustained for 2 Readings 2 Hours Apart and Presence of Subjective Dyspnea or Cough
Ascorbic Acid and Folic Acid2Participants
Number of Persons With Lower Respiratory Tract Infection (LRTI), Defined as Resting Blood Oxygen Saturation (SpO2<93%) Level Sustained for 2 Readings 2 Hours Apart and Presence of Subjective Dyspnea or Cough
Hydroxychloroquine and Folic Acid0Participants
Number of Persons With Lower Respiratory Tract Infection (LRTI), Defined as Resting Blood Oxygen Saturation (SpO2<93%) Level Sustained for 2 Readings 2 Hours Apart and Presence of Subjective Dyspnea or Cough
Hydroxychloroquine and Azithromycin4Participants
Number of Persons With Lower Respiratory Tract Infection (LRTI), Defined as Resting Blood Oxygen Saturation (SpO2<93%) Level Sustained for 2 Readings 2 Hours Apart and Presence of Subjective Dyspnea or Cough
Lopinavir-ritonavir2Participants
Number of Persons With Lower Respiratory Tract Infection (LRTI), Defined as Resting Blood Oxygen Saturation (SpO2<93%) Level Sustained for 2 Readings 2 Hours Apart and Presence of Subjective Dyspnea or Cough
Ascorbic Acid1Participants
Number of Participants With Hospitalization or MortalityAscorbic Acid and Folic Acid4Participants
Number of Participants With Hospitalization or MortalityHydroxychloroquine and Folic Acid2Participants
Number of Participants With Hospitalization or MortalityHydroxychloroquine and Azithromycin3Participants
Number of Participants With Hospitalization or MortalityLopinavir-ritonavir0Participants
Number of Participants With Hospitalization or MortalityAscorbic Acid1Participants

Participant flow20

How many started, completed or left each group, period by period.

PeriodMilestoneGroupParticipantsUnits counted
Overall StudySTARTEDAscorbic Acid and Folic Acid83
Overall StudySTARTEDHydroxychloroquine and Folic Acid71
Overall StudySTARTEDHydroxychloroquine and Azithromycin77
Overall StudySTARTEDLopinavir-ritonavir29
Overall StudySTARTEDAscorbic Acid29
Overall StudyCompleted EnrollmentAscorbic Acid and Folic Acid80
Overall StudyCompleted EnrollmentHydroxychloroquine and Folic Acid65
Overall StudyCompleted EnrollmentHydroxychloroquine and Azithromycin74
Overall StudyCompleted EnrollmentLopinavir-ritonavir27
Overall StudyCompleted EnrollmentAscorbic Acid28

Adverse events45

Each adverse event the trial posted, group by group: the participants affected out of those at risk.

TypeEventOrgan systemGroupAffectedAt riskEvents
otherEvent leading to treatment discontinuationGastrointestinal disordersAscorbic Acid and Folic Acid2832
otherEvent leading to treatment discontinuationGastrointestinal disordersHydroxychloroquine and Folic Acid1711
otherEvent leading to treatment discontinuationGastrointestinal disordersHydroxychloroquine and Azithromycin3774
otherEvent leading to treatment discontinuationGastrointestinal disordersLopinavir-ritonavir92913
otherEvent leading to treatment discontinuationGastrointestinal disordersAscorbic Acid0290
otherQT ProlongationCardiac disordersAscorbic Acid and Folic Acid0830
otherQT ProlongationCardiac disordersHydroxychloroquine and Folic Acid2712
otherQT ProlongationCardiac disordersHydroxychloroquine and Azithromycin0770
otherQT ProlongationCardiac disordersLopinavir-ritonavir0290
otherQT ProlongationCardiac disordersAscorbic Acid0290

Adverse event totals15

The totals the trial posted for each group.

TotalGroupAffectedAt risk
Total, all-cause mortalityAscorbic Acid and Folic Acid083
Total, all-cause mortalityHydroxychloroquine and Folic Acid071
Total, all-cause mortalityHydroxychloroquine and Azithromycin077
Total, all-cause mortalityLopinavir-ritonavir029
Total, all-cause mortalityAscorbic Acid029
Total, other adverse eventsAscorbic Acid and Folic Acid283
Total, other adverse eventsHydroxychloroquine and Folic Acid471
Total, other adverse eventsHydroxychloroquine and Azithromycin577
Total, other adverse eventsLopinavir-ritonavir929
Total, other adverse eventsAscorbic Acid029

Papers3

The papers the trial lists on ClinicalTrials.gov.

PMIDListed asSource
33681731DERIVEDPubMed
34473343DERIVEDPubMed
35604806DERIVEDPubMed

Grants0

The grants NIH RePORTER links to the trial, newest funded first: NIH's, and some of AHRQ's, CDC's, FDA's and VA's. Each shows its title, principal investigators, organization and funder in its newest year.

None in this release.

Trial comparisons0

Comparisons of the trial's two groups, calculated by ConductScience from the counts it posted.

None in this release.

Tests0

The ConductCognition tests this trial's registered outcomes name, as ScienceGraph matched them in trial-tests-2026-11-12-0.2.1.

None in this release.

Data dates

The day each source was copied for this release.

ClinicalTrials.gov
2026-11-12
ClinicalTrials.gov
Results, from AACT
2026-03-23
AACT
NIH grant links
2026-11-13
NIH RePORTER

Sources 3

  • ClinicalTrials.gov's posted results, through CTTI's AACTFreely available. Acknowledgement requested
  • ClinicalTrials.govNo license stated
  • NIH RePORTER's clinical studies and project filesPublic domain
Each source's terms
  • ClinicalTrials.gov's posted results, through CTTI's AACTClinicalTrials.gov data via Aggregate Analysis of ClinicalTrials.gov (AACT), CTTI. CTTI makes its materials freely available and requests acknowledgement. https://aact.ctti-clinicaltrials.org/documentation/299
  • ClinicalTrials.govnone stated
  • NIH RePORTER's clinical studies and project filesPublic domain (NIH RePORTER)

ClinicalTrials.gov's data carry an international copyright outside the United States: https://clinicaltrials.gov/about-site/terms-conditions.

For software

Read this trial from software.

The record and each of its lists are JSON, twenty rows a page. No key.

GET https://conductscience.org/api/trials/v1/NCT04354428

GET https://conductscience.org/api/trials/v1/NCT04354428/results?page=2