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Post-Acute COVID-19 Syndrome clinical trials

The registry lists 605 studies for Post-Acute COVID-19 Syndrome across more than 10 countries. 201 are recruiting or about to start. 500 of them are mainly about Post-Acute COVID-19 Syndrome (how this is decided). Per ClinicalTrials.gov, last updated 2026-11-13.

ClinicalTrials.gov finds 713 studies for Post-Acute COVID-19 Syndrome. How that becomes 604 here

This page counts the studies the registry files under Post-Acute COVID-19 Syndrome, and those it files under no condition that list Post-Acute COVID-19 Syndromethemselves. Each study its search finds is placed by how the registry filed it and by the conditions it lists. ClinicalTrials.gov counts as of Nov 8, 2026. How condition pages count

  1. 713Found by its condition searchIt reads the conditions a study lists and their synonyms, and also titles and keywords.
  2. −3List Post-Acute COVID-19 Syndrome as a condition, but the registry did not file them under itMost often written as “Long COVID Syndrome” (2) and “Long COVID Fatigue” (1). The registry filed them under other conditions only, most often Myocarditis (1) and Heart Failure (1).
  3. −106Match it another way41 name it in the title, 3 in a keyword, and 62 by a synonym or other text the search reads.
  4. 604The count on this page5 of them list Post-Acute COVID-19 Syndrome in their own words; the registry filed them under no condition.

Get an email when these change. Save the Post-Acute COVID-19 Syndrome studies recruiting or about to start — once a week, free: studies that open, close, add sites or post results.

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Breast cancer · Recruiting: 2 came in, 3 changed

What changed in your saved searches, Oct 31 – Nov 6:

A study of drug A after surgery for early breast cancer

Came in · now Recruiting

Drug B with hormone therapy in advanced breast cancer

Changed

· Sites: 4 added, including Seoul and Busan

· Enrollment: 300 → 450 participants

Exercise during chemotherapy

Now Active, not recruiting

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Status

Completed
271
Recruiting
145
Active, not recruiting
51
Status unknown
51
Not yet recruiting
43
Withdrawn
13

Phase

Phase 2
94
Phase 3
34
Phase 1
14
Phase 4
10
Early Phase 1
6

Where

United States
194
Spain
52
Germany
41
Canada
40
Italy
29
United Kingdom
27

Who runs them

VA Office of Research and Development (11) · Icahn School of Medicine at Mount Sinai (10) · Duke University (8) · Charite University, Berlin, Germany (7) · Karolinska Institutet (6) · Kanecia Obie Zimmerman (5) · Massachusetts General Hospital (5) · University of Alberta (5)

What is being tested here

Drugs under test in Post-Acute COVID-19 Syndrome studies, those with the most open studies first. Medicines only given beside them are not counted. How drugs are counted

DrugOpenPhase 3All
Naltrexone214
Metformin222
Taurine212
Maraviroc212
Nogapendekin alfa inbakicept202
Remdesivir103
Sirolimus122
Fluvoxamine122
Immunoglobulins, Intravenous102
Immunoglobulin G102

Drug classes tested here Tyrosine kinase inhibitors (TKIs) 3 open · JAK inhibitors 2 open · Corticosteroids 1 open · Stimulants 3

Coming up

18phase 3 studies under way
57studies finish main data collection within a year6 of them phase 3

Studies recruiting or running, from their records. “Main data collection” ends at the primary completion date, the sponsor’s own estimate, which often moves.

The 10 nearest, phase 3 first

Who these studies take

Of the 145 Post-Acute COVID-19 Syndrome studies recruiting now, 70 (48%) set no upper age limit and 53 (37%) stop at 75 or younger. 15 (10%) take children under 18. 2 (1%) are for women only and 0 (0%) for men only; 39 (27%) take healthy volunteers.

Recruiting studies that take each age, of 145
AgeWomenMen
1012 (8%)12 (8%)
18134 (92%)132 (91%)
30136 (94%)134 (92%)
40137 (94%)135 (93%)
50139 (96%)137 (94%)
65133 (92%)132 (91%)
7597 (67%)97 (67%)
8579 (54%)79 (54%)

Across all 605 studies, recruiting or not: 35% stop at 75 or younger and 24% at 65; 8% take children; 1% are for women only and <1% for men only; 20% take healthy volunteers. From each study’s registry entry; the criteria on its page decide.

How long Post-Acute COVID-19 Syndrome studies take

Of 63 phase 2 interventional studies under Post-Acute COVID-19 Syndrome, half reached primary completion within 17 months of starting, counting those still running.

Start to primary completionEvery sponsorIndustryNon-industry
Phase 217 mo12–23 · 63 studies—17 mo12–24 · 46 studies
Interventional, no phase16 mo7–27 · 244 studies—16 mo8–28 · 233 studies
Observational27 mo14–39 · 105 studies—27 mo17–39 · 98 studies

Each figure is the month by which half the studies had reached primary completion, with the range in which the middle half did. Studies still running count until their last registry update; studies that stopped early are left out. Phase 1 includes early phase 1; observational means prospective or not stated, as retrospective and cross-sectional studies date a window of data rather than a study. How these figures are worked out

What changed recently

From the registry's own updates since Oct 15, 2026.

Started recruiting3

Results posted1

Newly registered6

Show 1 more

Studies

Recruiting first, then most recently updated. Showing 50 of 605. Browse all 605 → or search them.