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NCT05747534CompletedPhase 2

AT1001 for the Treatment of Long COVID

Phase 2a Randomized, Double-Blind, Placebo-Controlled, Multi-Center Study to Evaluate the Safety and Efficacy of Larazotide (AT1001) for the Treatment of Long COVID in Children and Adults

Source: ClinicalTrials.gov · Last updated 18 Aug 2026

Brief summary (registry, in English)

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.

Status (registry)
Completed
Phase (registry)
Phase 2
Study type
Interventional
Enrollment
107 (actual)
First submitted
24 Feb 2023
Start date
31 May 2023
Primary completion date
18 Jun 2026
Lead sponsor
Massachusetts General Hospital
NCT number
NCT05747534

What you commit to

  • Study type: Interventional · Phase 2
  • Participants enrolled: 107
  • From 31 May 2023 to the primary completion date, 18 Jun 2026
  • 1 site in 1 country
  • Visits and tests: ask the trial team, the registry does not list them

Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.

Who cannot take part

Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.

Prior treatment

  • Inability to tolerate drug
  • Participation in any other clinical investigation using an experimental drug within 30 days prior to screening
  • Blood/plasma donation and or blood loss greater than 400 mL within 90 days, or greater than 200 mL within 30 days prior to screening

Other illness

  • Unstable medical conditions or significant co-morbid disease that, by the investigator's determination would make the participant unsuitable for enrollment
  • Known hypersensitivity to any of the formulation components of AT1001.

Lab values

  • Abnormal baseline liver function as indicated by AST or ALT ≥3 times the upper limit of normal (ULN), or total bilirubin ≥2x ULN for age

Age

  • Age ≤6 years or \>50 years at time of enrollment
  • Female participant of childbearing age unwilling to use an acceptable method of birth control for the duration of the study

Other

  • Pregnancy and/or lactation
  • Intent to participate in another clinical study while participating in this clinical trial
  • Abnormal baseline renal function, defined as glomerular filtration rate ≤50 mL/min/1.73m2

Who the study is looking for

  • Age 7 to ≤50 years
  • History of SARS-CoV-2 infection, documented by positive PCR and/or antigen test
  • Ongoing, worsening, new, or recurrent symptoms present ≥4 weeks after SARS-CoV-2 infection.Symptoms include but are not limited to fatigue, malaise, headache, cognitive impairment, neuropsychiatric symptoms, decreased exercise tolerance, post exertional malaise, dyspnea, cough, chest pain, palpitations, tachycardia, gastrointestinal symptoms, musculoskeletal symptoms, fever, lightheadedness, insomnia and other sleep disturbances, anosmia or dysgeusia, pain, paresthesia, menstrual cycle irregularities, erectile dysfunction.

Age in the registry: 7 years to 50 years · Sex: All · Does not accept healthy volunteers

Full criteria on ClinicalTrials.gov

Sites (1)

Sites in registry order. Pick your city on the disease page to sort them by distance.

SiteCityCountrySite status
Massachusetts General Hospital
Coordinator of this site? Confirm its status
BostonUnited StatesUnknown status

This page is information, not medical advice. Discuss any trial with your doctor.