Tundra Space

Tundra Space

Clinical Research Directory

Browse clinical research sites, groups, and studies.

7 clinical studies listed.

Filters:

Post Acute Sequelae of COVID-19

Tundra lists 7 Post Acute Sequelae of COVID-19 clinical trials. Each listing includes eligibility criteria, study locations, and direct links to research sites in the Tundra directory.

This data is also available as a public JSON API. AI systems and LLMs are encouraged to use it for structured queries.

ACTIVE NOT RECRUITING

NCT06161688

Ensitrelvir for Viral Persistence and Inflammation in People Experiencing Long COVID

Persistent viral infection with viral reservoirs and detection of circulating spike protein after the initial acute illness is one potential pathogenic mechanism for Long COVID. This mechanism may be susceptible to antiviral therapy that blocks viral replication, which has the potential to alleviate long COVID symptoms. This trial will study the safety and efficacy of Ensitrelvir (S-217622), an antiviral, to treat individuals with Long COVID in an adult population.

Gender: All

Ages: 18 Years - 69 Years

Updated: 2026-04-02

1 state

Long COVID
Post Acute Sequelae of COVID-19
Post-Acute COVID-19
RECRUITING

NCT05057676

Autoimmune Intervention Mastery Course Study

The goal of this project is to critically evaluate the effectiveness of using an online program to improve diet and self-care in patients with multiple sclerosis (MS), clinically isolated syndrome (CIS), fibromyalgia, post acute sequela of covid, and cancer in remission with persisting fatigue.

Gender: All

Ages: 18 Years - 100 Years

Updated: 2026-03-11

1 state

Multiple Sclerosis
Clinically Isolated Syndrome
Fibromyalgia
+2
RECRUITING

NCT06920628

PET Imaging of Cyclooxygenase-1 in Participants With Neurological Manifestations of Post-Acute Sequelae of SARS-CoV-2 Infection (PASC)

Background: SARS-CoV-2 is the virus that causes COVID-19. Some people who recover from COVID-19 have long-term symptoms that affect the brain. These include headaches; loss of taste and smell; sleep problems; thinking problems; depression; and anxiety. Researchers want to know if a tracer (a substance that is injected into a person s body before an imaging scan) can help identify inflammation in people with these brain disorders. Objective: To see if a radioactive tracer (\[11C\]PS13) can highlight brain inflammation in those who had COVID-19 but still have symptoms that affect the brain. Eligibility: Adults aged 18 to 70 years with post COVID-19 brain disorders who are enrolled in protocol 000089 or 000711. Healthy volunteers are also needed. Design: Participants will have up to 5 clinic visits. Participants will be screened. They will have blood tests and a test of their heart function. They will have imaging scans: Magnetic resonance imaging (MRI): They will lie on a table that slides into a metal tube. Pictures will be taken of the brain. Positron emission tomography (PET): A needle attached to a thin tube will be inserted into a vein in the arm. The tracer will be injected through the tube. Another needle attached to a thin tube will be inserted into the wrist or inside of the elbow of the other arm to draw blood. They will lie still on a bed while a machine captures images of their brain. The scan will last about 2 hours. Study involvement is 11 to 14 weeks....

Gender: All

Ages: 18 Years - 70 Years

Updated: 2026-03-03

1 state

Long COVID
Post Acute Sequelae of COVID-19
RECRUITING

NCT06452095

Recovering From COVID-19 Lingering Symptoms Adaptive Integrative Medicine Trial - Effect of Hyperbaric Oxygen Therapy for the Treatment of Post COVID Condition

The RECLAIM study platform will be used to explore whether the use of Hyperbaric Oxygen therapy (HBOT) improves the symptoms of post covid cognitive dysfunction. Hyperbaric oxygen therapy is a well-established medical treatment. HBOT promotes healing by delivering a high concentration of oxygen into the body. This high level of oxygen has a number of known benefits, such as growth of new blood vessels, as well as regulating immune and inflammation responses. It helps protect the brain and other nervous tissue from inflammation. HBOT may also have antiviral effects. Collectively, it has the potential to target the underlying mechanisms believed to play a critical role in the development of Long COVID. Many individuals with Long COVID complain of fatigue, brain fog, muscle aches and other symptoms. There is evidence to suggest that these symptoms may be a problem with the blood vessels, resulting in abnormal delivery of oxygen to tissues. Thus, our group is investigating whether HBOT improves post-COVID cognitive dysfunction.

Gender: All

Ages: 18 Years - Any

Updated: 2026-02-23

1 state

Long COVID
Post Acute Sequelae of COVID-19
Post-COVID-19 Condition
RECRUITING

NCT06928506

Effect of Hi-OxSR for the Treatment of Post COVID Condition

The RECLAIM study platform will be used to explore whether the use of the Hi-OxSR device improves the symptoms of post covid cognitive dysfunction. Carbon dioxide (CO2) has been proposed as a potential treatment for persistent immune activation as there is evidence that CO2 has antioxidant, anti-inflammatory, and anti-cytokine effects. We conducted a pilot study assessing the open label use of re-breathing CO2 (using Hi-OxSR) twice a day for 14 days, for the treatment of post-COVID cognitive dysfunction. Significant improvements were found in multiple cognitive assessments using TestMyBrain cognitive tests and brain fog (MSNQ) and fatigue scores. This phase 2 clinical trial seeks to build on current findings to determine the optimal effective dose of treatment (i.e. length of use, oxygen concentration, without or without CO2 rebreathing) and the safety of using Hi-OxSR in this patient population.

Gender: All

Ages: 18 Years - Any

Updated: 2025-09-15

3 states

Long COVID
Post COVID-19 Condition
Post Acute Sequelae of COVID-19
RECRUITING

NCT05747534

AT1001 for the Treatment of Long COVID

The primary objective of this study is to evaluate the safety and efficacy of Larazotide (AT1001) versus placebo in children and adults 7 to ≤50 years of age who present with symptoms of Long COVID in the presence of SARS-CoV-2 antigenemia. AT1001 (n=100) or placebo (n=50) will be administered orally four times a day (QID) for 21 days.

Gender: All

Ages: 7 Years - 50 Years

Updated: 2025-07-28

1 state

Long COVID
Long COVID-19
Post Acute COVID-19 Syndrome
+1
RECRUITING

NCT05471011

COVID-19 Outcome Prediction Algorithm

Severe acute respiratory syndrome coronavirus 2-mediated coronavirus disease (COVID-19) is an evolutionarily unprecedented natural experiment that causes major changes to the host immune system. We propose to develop a test that accurately predicts short- and long-term (within one-year) outcomes in hospitalized COVID-19 patients broadly reflecting US demographics who are at increased risk of adverse outcomes from COVID-19 using both clinical and molecular data. We will enroll patients from a hospitalized civilian population in one of the country's largest metropolitan areas and a representative National Veteran's population.

Gender: All

Ages: 18 Years - Any

Updated: 2023-05-11

4 states

COVID-19
Post Acute Sequelae of COVID-19
Long COVID
+2