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Clinical Research Directory

Browse clinical research sites, groups, and studies.

3 clinical studies listed.

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Persistent COVID-19

Tundra lists 3 Persistent COVID-19 clinical trials. Each listing includes eligibility criteria, study locations, and direct links to research sites in the Tundra directory.

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RECRUITING

NCT05780450

Effectiveness of Transcranial Direct Current in Patients With Persistent COVID-19 With Headaches and Chronic Pain.

This study aims to verify the efficacy/effectiveness of treatment with transcranial direct current stimulation (TDCS) in patients with Long Covid who experience headaches, migraines, and chronic pain, such as arthralgia and myalgia, as well as sleep problems. Transcranial direct current stimulation is used in the field of Physiotherapy and Rehabilitation, with results that have proven to be effective for treating patients suffering from symptoms like migraines, headaches, chronic pain, fibromyalgia, or chronic neuropathic pain and insomnia. As you can see, in the case of patients with Long Covid, we find several of these symptoms, so it is suggested that if transcranial direct current therapy (TDCS) gives such good results in relieving these symptoms, why couldn't it give such good results and help just as much in patients with Long Covid, since many of the symptoms are the same, even if the origin or cause is different.

Gender: All

Ages: 16 Years - Any

Updated: 2026-10-15

1 state

COVID-19
Long COVID
Long Covid19
+12
COMPLETED

NCT06766825

Study to Evaluate the Efficacy and Safety of Plitidepsin in Adults With Post-COVID-19 Condition (PCC)

The study aims to prove that plitidepsin could be an efficacious, safe, and well-tolerated therapy for PCC. To this end, we will perform a randomized, double-blind study comparing the clinical and laboratory benefits of plitidepsin vs. placebo in 90 subjects with moderate to severe functional disability. The study consists of an intervention period and a follow-up period, with a total of 135 +/-3 days approximately between both periods. During the intervention period, four treatment cycles will be administered, scheduled every 15 days (every 2 weeks), with intravenous (IV) infusion over three consecutive days. After completing the intervention period, a 90-day (+/-5) follow-up period will be conducted. Subjects in arm A will receive the plitidepsin 1.5 mg/day 1h-IV during the four treatment periods on Days 1 to 3, Days 15 to 17, Days 29 to 31 and Days 43 to 45. Subjects in arm B will receive 1h-IV placebo 1 vial /day during the first two treatment periods and will receive the plitidepsin 1.5 mg/day 1h-IV during the last two treatment periods. Subjects in arm C will receive 1h-IV placebo 1 vial/day during the four treatment periods.

Gender: All

Ages: 18 Years - Any

Updated: 2026-10-08

1 state

Post COVID-19 Condition
Long COVID Syndrome
Persistent COVID-19
+2
COMPLETED

NCT06576102

Evaluation of Prevalence and Risk Factors of Persistent COVID-19 in Immunocompromised Patients

Spontaneous international multicenter retrospective and prospective observational study which objective is to evaluate the prevalence and risk factors of persistent SARS-CoV-2 infection within a population of hematology patients with humoral immunity deficiency.

Gender: All

Ages: 18 Years - Any

Updated: 2026-05-28

5 states

Persistent COVID-19
B Cell Malignancies