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LYT-100 in Post-acute COVID-19 Respiratory Disease

A Phase 2 Randomized, Double-blind, Placebo-controlled Trial and Open Label Extension to Evaluate the Safety and Efficacy of Deupirfenidone (LYT-100) in Post-acute COVID-19 Respiratory Disease

Status
Terminated
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04652518
Enrollment
185
Registered
2020-12-03
Start date
2020-12-11
Completion date
2022-07-18
Last updated
2026-06-23

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

Conditions

Covid19, Post-acute COVID-19 Respiratory Disease

Keywords

COVID-19 Respiratory Disease, novel coronavirus, respiratory complications, SARS-CoV-2, post acute, lung fibrosis, interstitial lung disease, long COVID, long haul COVID, Post-acute COVID-19 Respiratory Disease

Brief summary

This study is being conducted in two parts, A and B. Part A is a randomized, double-blind, parallel arm study to evaluate the safety and efficacy of LYT-100 compared to placebo in adults with post-acute COVID-19 respiratory complications. Part B is an Open Label Extension (OLE) study for patients who complete Part A.

Detailed description

Part A of this study is a randomized, double-blind, parallel arm study being conducted at approximately 35 centers globally to evaluate the safety and efficacy of LYT-100 compared to placebo in 168 adults with post-acute COVID-19 respiratory complications who were treated with mechanical ventilation, extracorporeal membrane oxygenation, non-invasive ventilation (eg CPAP or BiPAP), high-flow nasal oxygen therapy or any other means of oxygen administration in the hospital for at least 1 day and have required only low flow nasal oxygen or no oxygen supplementation for at least 72 hours prior to screening. LYT-100 or placebo will be taken daily for up to 91 days with the primary outcome of change in distance walked on the six-minute walk test performed in line with the American Thoracic Society Respiratory Society Guidelines assessed at Day 91. Secondary endpoints, including pharmacokinetics, inflammatory biomarkers, imaging, and patient-reported outcomes of dyspnea and the 36-Item Short Form Health Survey will also be evaluated. The second part of the study, Part B, is an open-label extension in which eligible patients who completed Part A will be enrolled and treated with open-label LYT-100 for an additional 91 days. The primary endpoint for Part B of the study is to assess the longer-term safety, tolerability, and efficacy of LYT-100 through up to 182 days of treatment.

Interventions

DRUGLYT-100

oral administration

OTHERPlacebo

oral administration

Sponsors

PureTech
Lead SponsorINDUSTRY
Clinipace Worldwide
CollaboratorINDUSTRY
Novotech (Australia) Pty Limited
CollaboratorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
TRIPLE (Subject, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to 80 Years
Healthy volunteers
No

Inclusion criteria

Key Inclusion Criteria: * Positive result of a molecular RT-qPCR diagnostic test or SARS-CoV-2 RNA result from a clinical specimen deemed clinically associated with the current episode of illness, warranting hospital admission as per investigator's judgement, or previously hospitalized (central and/or local laboratory COVID-19 test results are accepted from any biological material source) * Hospitalization for COVID-19 respiratory disease and treated with supplemental oxygen (including MV, ECMO or any other means of oxygen administration) in hospital for at least 1 day * COVID-19 pneumonia findings on imaging (chest X-ray or CT Scan) with a minimum of two lung lobes involvement * Able to bear weight and ambulate a minimum of 10 m distance (use of inhaled oxygen permitted) * Shortness of breath ≥ grade 3 on mBDS dyspnea scale and not requiring MV, ECMO, NIV, and/or HFNO (nasal O2 is allowed) for at least 72 hours before screening Key

Exclusion criteria

* Pre-existing chronic respiratory condition(s), obstructive or restrictive, for which the patient is actively taking concomitant medication are excluded. Patients with history of Idiopathic Pulmonary Fibrosis (IPF), lung cancer, pulmonary arterial hypertension, other interstitial lung diseases, severe cardiac insufficiency (grade IV) are excluded irrespective of whether they are actively being medicated for those conditions or not. * Pre-existing co-morbid conditions preventing outcome assessments, e.g., neurological, medical, orthopedic injury/disability, disease or condition that would prevent ability to transfer and walk for 6 minutes, prior to confirmed COVID-19 diagnosis * Unstable angina or myocardial infarction in the last month prior to screening * Patients on MV, ECMO, NIV, and/or HFNO within the last 72 hours prior to screening

Design outcomes

Primary

MeasureTime frameDescription
Change From Baseline in Distance Walked During the Six-Minute Walk Test (6MWT)Baseline to Day 91The 6MWT is a validated endpoint commonly used in clinical trial research. The 6MWT measures the distance a subject can quickly walk on a flat, hard surface in a period of 6 minutes. It evaluates the global and integrated response of all the systems involved during exercise.

Countries

Argentina, Brazil, Moldova, Philippines, Romania, Ukraine, United Kingdom, United States

Contacts

PRINCIPAL_INVESTIGATORToby Maher, MD

Keck School of Medicine, University of Southern California

Baseline characteristics

Characteristic
Age, Continuous52.7 years
STANDARD_DEVIATION 12.49
Age, Customized
<65 years
136 Participants
Age, Customized
>=65 years
41 Participants
BMI30.05 kg/m^2
STANDARD_DEVIATION 4.71
Days since discharge from hospital34.2 days
STANDARD_DEVIATION 29.11
Ethnicity (NIH/OMB)
Hispanic or Latino
18 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
158 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
1 Participants
Height169.24 cm
STANDARD_DEVIATION 10.178
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
20 Participants
Race (NIH/OMB)
Black or African American
3 Participants
Race (NIH/OMB)
More than one race
0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
4 Participants
Race (NIH/OMB)
White
79 Participants
Region of Enrollment
Argentina
8 participants
Region of Enrollment
Brazil
2 participants
Region of Enrollment
Moldova
22 participants
Region of Enrollment
Philippines
8 participants
Region of Enrollment
Romania
25 participants
Region of Enrollment
Ukraine
20 participants
Region of Enrollment
United Kingdom
5 participants
Region of Enrollment
United States
11 participants
Sex: Female, Male
Female
32 Participants
Sex: Female, Male
Male
50 Participants
Time from COVID diagnosis to first dose of study drug56.3 days
STANDARD_DEVIATION 28.16
Weight87.82 kg
STANDARD_DEVIATION 16.99

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
1 / 900 / 950 / 107
other
Total, other adverse events
19 / 9052 / 9541 / 107
serious
Total, serious adverse events
3 / 903 / 954 / 107

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jun 24, 2026