A Phase 2 study to evaluate the safety and preliminary efficacy of ATYR1923, compared to placebo, in hospitalized patients with SARS-CoV-2 (COVID-19) severe pneumonia not requiring mechanical ventilation



Eligible Ages
Between 18 Years and 75 Years
Eligible Genders
Accepts Healthy Volunteers

Inclusion Criteria

  • Confirmation of SARS-CoV2 infection by PCR. - Severe pneumonia related to SARS-CoV2 infection, defined as fever or suspected respiratory infection with radiographic abnormalities suggestive of viral pneumonia, plus at least one of the following: - Respiratory rate >30 breaths/min; or - Severe respiratory distress, as determined by the Investigator; or; - Oxygen saturation (SpO2) ≤93% on room air.

Exclusion Criteria

  • Patient is intubated/mechanically ventilated. - In the opinion of the Investigator, patient's progression to death is imminent. - Treatment with immunosuppressant/immunotherapy drugs, including but not limited to IL-6 inhibitors, TNF-α inhibitors, anti-IL-1 agents and janus kinase inhibitors within 5 half-lives or 30 days prior to Day 1. - Use of chronic (>30 days) oral corticosteroids for a non COVID 19-related condition in a dose higher than prednisone 10 mg or equivalent per day. - Weight >165 kg or <40 kg.

Study Design

Phase 2
Study Type
Intervention Model
Parallel Assignment
Intervention Model Description
Patients will be randomized 1:1:1 to a single IV dose of ATYR1923 1 mg/kg, ATYR1923 3 mg/kg, or placebo.
Primary Purpose
Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
Masking Description
The Investigator, Sponsor, and patient will be blinded to treatment assignment; study center pharmacy personnel will be unblinded.

Arm Groups

ArmDescriptionAssigned Intervention
ATYR1923 1 mg/kg
Single dose of ATYR1923 1 mg/kg
  • Drug: ATYR1923 1 mg/kg
    1 mg/kg of ATYR1923 administered intravenously
ATYR1923 3 mg/kg
Single dose of ATYR1923 3 mg/kg
  • Drug: ATYR1923 3 mg/kg
    3 mg/kg of ATYR1923 administered intravenously
Placebo Comparator
Single dose of Placebo
  • Drug: Placebo
    Placebo administered intravenously

More Details

Active, not recruiting
aTyr Pharma, Inc.

Study Contact


Study information shown on this site is derived from ClinicalTrials.gov (a public registry operated by the National Institutes of Health). The listing of studies provided is not certain to be all studies for which you might be eligible. Furthermore, study eligibility requirements can be difficult to understand and may change over time, so it is wise to speak with your medical care provider and individual research study teams when making decisions related to participation.