Updated June 2026 · ClinicalTrials.gov
Effect of 2-HOBA in Persistent Immune Activation in Long COVID POTS
Mechanism of Isolevuglandin-Protein Adduct Formation in Persistent Immune Activation in Long COVID POTS
Effect of 2-HOBA in Persistent Immune Activation in Long COVID POTS (NCT07189936) is a Phase 2 interventional studying Post-Acute COVID-19 Syndrome and Postural Tachycardia Syndrome (POTS), sponsored by Vanderbilt University Medical Center. RECRUITING as of the most recent ClinicalTrials.gov update. Talk to your doctor before contacting the trial site.
About This Trial
Long COVID is defined by a range of symptoms affecting multiple organs that persist for more than three months following an acute SARS-CoV-2 infection. Approximately 7% of individuals who recover from SARS-Cov-2 infection develop Long COVID. Long COVID Postural Orthostatic Tachycardia Syndrome (LCPOTS) symptoms include fatigue, exercise intolerance, orthostatic intolerance, syncope, and heightened orthostatic tachycardia. Research has found that decreased parasympathetic activity in LCPOTS increases the production of highly immunogenic neoantigens Isolevuglandins (IsoLG-adducts). IsoLG-adducts induce formation of circulating monocyte/T cell complexes(doublets) leading to the persistent and unresolved immune response that continues after the initial infection. The purpose of the this research, is to study the effects of 2-hydroxybenzylamine (2-HOBA), an Iso-LG-adduct scavenger, its effects in immune markers and compare it with Placebo
What Stage of Research Is This?
Phase 2 trials evaluate whether a treatment actually works against Post-Acute COVID-19 Syndrome and continue monitoring side effects. Phase 2 enrolls larger groups (typically 100–300 patients) and produces the first real efficacy signal. A successful Phase 2 readout is what unlocks the much larger Phase 3 confirmatory trials needed for FDA approval.
This trial is currently recruiting participants. The sponsor has registered the study with ClinicalTrials.gov as actively enrolling, which means new applicants who meet the eligibility criteria can be considered for screening. Trial status can change between updates — confirm current recruiting status with the study contact before traveling for a screening visit.
Target enrollment of 50 participants puts this in the typical range for a Phase 2-style efficacy study or a moderate Phase 3 trial in a focused Post-Acute COVID-19 Syndrome subpopulation. At this scale, the study has enough statistical power to detect a clear treatment effect but is not the largest cohort in the field.
Who May Be Eligible (Plain English)
These are translations of the protocol\'s inclusion and exclusion criteria, simplified for patients and caregivers. The original clinical text appears below. Eligibility is ultimately confirmed by the trial site\'s screening process — this summary is a starting point for a conversation with your doctor, not a final determination.
Original Eligibility Criteria
View original clinical language
Treatments Being Tested
To Measure levels of circulating monocyte/ T cell doublets at Baseline
To determine the levels of circulating monocyte/ T cell doublets on all the LCPOTS subjects
To measure levels of circulating monocyte/ T cell doublets after 28 days of 2 HOBA treatment
Subjects will be randomized 1:1 to 2-HOBA or matching placebo. The levels of circulating monocyte/ T cell doublets (immune burden) after 28 days of 2 HOBA treatment
To measure levels of circulating monocyte/ T cell doublets after 28 days of Placebo treatment
The levels of circulating monocyte/ T cell doublets (immune burden) after 28 days of 2 HOBA treatment and compare it to the placebo arms
To Measure Splanchnic venous capacitance after 28 days of Treatment with 2HOBA
We will Measure changes in Splanchnic venous capacitance after 28 days of Treatment with 2HOBA and compare it with baseline during 30 Mins head up tilt . All the LCPOTS subjects will be randomized 1:1 to 2-HOBA or matching placebo
To Measure Splanchnic venous capacitance after 28 days of Treatment with Placebo
We will Measure changes in splanchnic venous capacitance during 30 mins head up tilt ,after 28 days of Treatment with Placebo, we will compare it to the subjects who received 2 HOBA for 28 days
To Measure Orthostatic Tachycardia after 28 days of Treatment with 2HOBA
To Measure changes in Orthostatic Tachycardia after 28 days of Treatment with 2HOBA at 30 minutes of head up Tilt
To Measure Orthostatic Tachycardia after 28 days of Treatment with Placebo
To Measure changes in Orthostatic Tachycardia after 28 days of Treatment with Placebo at 30 minutes of head up Tilt and compare it with the subjects who received 28 days of 2HOBA
Locations (1)
Trial sites listed on ClinicalTrials.gov for this study. Site activation status can vary — confirm with the specific site before traveling for a screening visit.
How to Talk to Your Doctor About This Trial
Bring the printable summary of this trial — including the NCT ID (NCT07189936), the sponsor (Vanderbilt University Medical Center), and the key eligibility criteria — to your next appointment. Your doctor can review the inclusion and exclusion criteria against your medical history, lab values, and current treatments to assess whether you are likely to qualify. They can also help you weigh whether trial participation makes sense alongside your existing care plan.
Useful questions to walk through together: What does the trial protocol require beyond standard care? How long is the active treatment phase, and how long is follow-up? Are there study visits at sites I can reach? Who pays for the trial-specific procedures, and who pays for standard-of-care portions? See our 25 questions to ask about clinical trials guide for a more complete checklist.
Authoritative Sources
The official record for this trial lives on ClinicalTrials.gov — the federal registry maintained by the National Library of Medicine at NIH. For background on how this trial fits into the FDA approval pathway, see the FDA drug approval process. For oncology-specific guidance for patients considering trials, the National Cancer Institute publishes patient-oriented overviews. International trial registries are aggregated by the WHO ICTRP.
Frequently Asked Questions
What is the NCT07189936 clinical trial studying?
Long COVID is defined by a range of symptoms affecting multiple organs that persist for more than three months following an acute SARS-CoV-2 infection. Approximately 7% of individuals who recover from SARS-Cov-2 infection develop Long COVID. Long COVID Postural Orthostatic Tachycardia Syndrome (LCPOTS) symptoms include fatigue, exercise intolerance, orthostatic intolerance, syncope, and heightened orthostatic tachycardia. Research has found that decreased parasympathetic activity in LCPOTS increases the production of highly immunogenic neoantigens Isolevuglandins (IsoLG-adducts). IsoLG-adduc… The full protocol is registered on ClinicalTrials.gov and includes the primary outcome measures, eligibility criteria, and study endpoints.
Who can participate in NCT07189936?
Eligibility for this trial depends on the specific inclusion and exclusion criteria set by the sponsor. The plain-English summary above translates the most important criteria into accessible language; the official clinical text is preserved in the collapsible section underneath. Whether you fit any specific trial is a medical decision your doctor needs to confirm — bring the trial information to your treating physician for a full review against your medical history.
How do I contact the trial site for NCT07189936?
Contact information registered with ClinicalTrials.gov is shown in the sidebar of this page. Before reaching out, confirm with your treating physician that this trial is appropriate for your situation. The trial site will then walk you through the screening process to determine final eligibility.
Is participating in a clinical trial safe?
Clinical trials in the United States are regulated by the FDA and overseen by Institutional Review Boards (IRBs) that review the protocol for safety. Risk varies by trial — Phase 1 studies test new treatments in humans for the first time, while Phase 3 trials use treatments that have already passed earlier safety screening. The informed consent document for any specific trial details the known risks and what to expect. Discuss those risks with your physician before deciding whether to participate.
Where can I verify the data on this page?
Every detail on this page comes directly from the ClinicalTrials.gov API. Click "View on ClinicalTrials.gov" in the sidebar to see the official, unmodified record. The federal record is always authoritative; this page is a structured presentation with a plain-English eligibility translation. For background on how clinical trials are regulated, see the FDA drug approval process documentation.
How This Page Is Built
Every field on this page is pulled directly from the ClinicalTrials.gov API v2 — no estimates, no proxies. The plain-English eligibility translation is generated from the original protocol text and reviewed for fidelity to the underlying clinical criteria. The original clinical text remains visible in the collapsible section above so users and clinicians can verify the translation. Read the full methodology for the data pipeline and known limitations.
Related Post-Acute COVID-19 Syndrome Trials
Source: ClinicalTrials.gov API v2 record for NCT07189936. Maintained by the National Library of Medicine at NIH. Public domain. Cite as: "TrialFinderData. NCT07189936. Data: ClinicalTrials.gov."
Medical disclaimer: This page is informational, not medical advice. Talk to your doctor about whether a clinical trial is right for you.
Last updated 2026-06-26 · Data from ClinicalTrials.gov.