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Purpose

This is a randomized, double-blind, placebo-controlled, multicenter, 28-day study of adult participants hospitalized with COVID-19, with a safety follow-up telephone call at Day 60.

Conditions

Eligibility

Eligible Ages
Over 18 Years
Eligible Sex
All
Accepts Healthy Volunteers
No

Inclusion Criteria

  • Signed and dated informed consent document(s). - Agrees to the collection of nasopharyngeal swabs and venous blood and all other protocol-specified procedures. - Male or non-pregnant female adult ≥18 years of age at time of enrollment. - Hospitalized and has laboratory-confirmed infection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). - Symptom onset was ≤10 days prior to screening. - Has oxygen saturation SpO2 <94% on room air. - Has at least one of a respiratory rate >24 breaths/minute or cough. - Lung involvement as confirmed by radiographic infiltrates observed on imaging (chest X-ray, computed tomography (CT) scan, or an equivalent test). - Women of childbearing potential (as defined in [CTFG 2014]) must have a negative pregnancy test at screening and agree to abstinence or the use at least one of the following highly effective forms of contraception (with a failure rate of <1% per year when used consistently and correctly). Contraception or abstinence must be continued for the duration of the study following discharge from the hospital, and for up to 50 days after the last dose of study drug: i) combined (estrogen and progestogen containing) hormonal contraception associated with inhibition of ovulation: oral, intravaginal, and transdermal ii) progestogen-only hormonal contraception associated with inhibition of ovulation: oral, injectable, and implantable iii) intrauterine device iv) intrauterine hormone-releasing system v) vasectomized partner with confirmed azoospermia All females will be considered of childbearing potential unless they are postmenopausal (at least 12 months consecutive amenorrhea in the appropriate age group without other known or suspected cause) or have been sterilized surgically (for example, bilateral tubal ligation, hysterectomy, bilateral oophorectomy). - Men sexually active with women of childbearing potential who have not had a vasectomy must agree to use a barrier method of birth control during the study following discharge from the hospital and for up to 50 days after the last dose of study drug.

Exclusion Criteria

  • Requires mechanical ventilation. - Current participation in any other interventional study. - Alanine transaminase/aspartate transaminase levels ≥3 times the upper limit of normal (×ULN) or total bilirubin (Tbili) ≥2×ULN. - Lymphocyte count <500 lymphocytes/microliter (μL) or hemoglobin <11 grams/deciliter (g/dL). - Stage 4 severe chronic kidney disease or requiring dialysis (that is, estimated glomerular filtration rate <30). - Any other condition, that in the opinion of the Investigator, may be cause to exclude the participant from the study. - Use of steroids (except dexamethasone), sensitive CYP2D6 substrates, CYP2C inducers, IL-6 neutralizing antibodies, IL-6 receptor inhibitors, or any investigational therapy. - Pregnancy or breast feeding. - Anticipated transfer to another hospital which is not a study site within 72 hours. - Known allergy to PTC299 or excipients.

Study Design

Phase
Phase 2/Phase 3
Study Type
Interventional
Allocation
Randomized
Intervention Model
Parallel Assignment
Primary Purpose
Treatment
Masking
Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)

Arm Groups

ArmDescriptionAssigned Intervention
Experimental
PTC299 + Standard of Care (SOC) 		Participants will receive PTC299 at 200 milligrams (mg), administered orally, twice daily (BID) on Days 1 to 7, then at 50 mg administered orally, once daily (QD) on Days 8 to 14. SOC will also be administered according to local, written policies or guidelines.
  • Drug: PTC299
    Oral tablets
    Other names:
    • Emvododstat
  • Other: SOC
    As defined per local written policies or guidelines.
Placebo Comparator
Placebo + SOC 		Participants will receive PTC299-matching placebo administered orally, BID on Days 1 to 7, then administered orally, QD on Days 8 to 14. SOC will also be administered according to local, written policies or guidelines.
  • Other: SOC
    As defined per local written policies or guidelines.
  • Drug: Placebo
    Oral tablets

Recruiting Locations

More Details

NCT ID
NCT04439071
Status
Terminated
Sponsor
PTC Therapeutics

Notice

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.