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Condition (MeSH)

Pulmonary Embolism

ClinicalTrials.gov lists 780 trials for Pulmonary Embolism or a narrower condition beneath it. Bayer has the most among industry and government lead sponsors, with 15.

MeSH D011655 Respiratory Tract Diseases C08 C14
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Phase 1 Phase 1 22 Phase 1/2 Phase 1/2 4 Phase 2 Phase 2 23 Phase 2/3 Phase 2/3 9 Phase 3 Phase 3 72 Phase 4 Phase 4 69 Not applicable Not applicable 222 Observational Observational 359 Phase 1 Phase 1 22 Phase 1/2 Phase 1/2 4 Phase 2 Phase 2 23 Phase 2/3 Phase 2/3 9 Phase 3 Phase 3 72 Phase 4 Phase 4 69 Not applicable Not applicable 222 Observational Observational 359

Trials per phase (log scale)

780 of the 780 trials are tagged with Pulmonary Embolism itself; the rest are tagged with a narrower condition beneath it.

Get the Pulmonary Embolism report as a PDF

The PDF carries up to 50 rows of each section, where the page shows the first few, with the sources listed. Enter a work email and confirm it from the message we send, and the report follows by email.

When did Pulmonary Embolism trials start? (33)

Shown in this order: most recent first, 1990 onwards. 2026 is partial: trials registered with a 2026 start date so far, not a full year. 1 trial is registered to start in 2027 or later, and not listed here.

Trials over time, by phase

  • Phase 1
  • Phase 1/2
  • Phase 2
  • Phase 2/3
  • Phase 3
  • Phase 4
  • Not applicable
  • Observational

Top of scale: 54

1990: 1 trials (Observational 1) 1991: 1 trials (Observational 1) 1992: 2 trials (Observational 2) 1996: 1 trials (Not applicable 1) 1998: 4 trials (Observational 1, Phase 3 3) 1999: 3 trials (Observational 1, Phase 4 2) 2000: 2 trials (Observational 1, Not applicable 1) 2001: 2 trials (Observational 1, Phase 3 1) 2002: 9 trials (Observational 1, Not applicable 1, Phase 4 5, Phase 3 1, Phase 2 1) 2003: 5 trials (Not applicable 1, Phase 4 1, Phase 3 3) 2004: 11 trials (Observational 4, Phase 4 2, Phase 3 1, Phase 2/3 2, Phase 2 2) 2005: 20 trials (Observational 6, Not applicable 6, Phase 4 2, Phase 3 1, Phase 2/3 1, Phase 2 2, Phase 1/2 1, Phase 1 1) 2006: 24 trials (Observational 8, Not applicable 7, Phase 4 4, Phase 3 2, Phase 2/3 1, Phase 2 2) 2007: 28 trials (Observational 8, Not applicable 3, Phase 4 4, Phase 3 9, Phase 2/3 1, Phase 2 3) 2008: 20 trials (Observational 9, Not applicable 5, Phase 4 2, Phase 3 2, Phase 2/3 1, Phase 2 1) 2009: 20 trials (Observational 9, Not applicable 4, Phase 4 1, Phase 3 2, Phase 2/3 1, Phase 2 1, Phase 1 2) 2010: 18 trials (Observational 8, Not applicable 1, Phase 4 4, Phase 3 5) 2011: 25 trials (Observational 15, Not applicable 5, Phase 4 2, Phase 3 2, Phase 1 1) 2012: 28 trials (Observational 15, Not applicable 7, Phase 4 2, Phase 3 3, Phase 2/3 1) 2013: 25 trials (Observational 11, Not applicable 5, Phase 4 4, Phase 3 1, Phase 2 2, Phase 1/2 1, Phase 1 1) 2014: 30 trials (Observational 18, Not applicable 9, Phase 4 1, Phase 3 2) 2015: 40 trials (Observational 22, Not applicable 7, Phase 4 4, Phase 3 3, Phase 2 1, Phase 1/2 1, Phase 1 2) 2016: 42 trials (Observational 18, Not applicable 11, Phase 4 5, Phase 3 3, Phase 1/2 1, Phase 1 4) 2017: 42 trials (Observational 16, Not applicable 14, Phase 4 5, Phase 3 5, Phase 2 2) 2018: 38 trials (Observational 24, Not applicable 10, Phase 3 1, Phase 2 1, Phase 1 2) 2019: 39 trials (Observational 20, Not applicable 12, Phase 4 3, Phase 3 2, Phase 1 2) 2020: 54 trials (Observational 29, Not applicable 15, Phase 4 3, Phase 3 2, Phase 2 2, Phase 1 3) 2021: 45 trials (Observational 21, Not applicable 15, Phase 4 5, Phase 3 2, Phase 2/3 1, Phase 1 1) 2022: 33 trials (Observational 15, Not applicable 15, Phase 4 1, Phase 3 2) 2023: 38 trials (Observational 14, Not applicable 18, Phase 4 2, Phase 3 2, Phase 2 1, Phase 1 1) 2024: 49 trials (Observational 22, Not applicable 21, Phase 4 2, Phase 3 4) 2025: 33 trials (Observational 14, Not applicable 15, Phase 3 2, Phase 1 2)

Trials registered with a start date in each year, 1990 onward, stacked by phase (complete years only; the current partial year is in the table's notes). The table below lists the same counts, most recent years first.

Trials started per year
Year Trials started
2026 (partial year) 44
2025 33
2024 49
2023 38
2022 33
2021 45
2020 54
2019 39
2018 38
2017 42

Forecast of the full-year count, planned starts included, not rows of this table: about 54 trials starting in 2026 and about 43 in 2027, the average of the 24 months through September, counted as registered and carried forward, with about 0.7 times the starts already registered for the rest of 2026 added. The rows of this table count trials registered so far with a start date in the year, planned starts included; the forecast looks ahead to the count for the whole year, so it is not the same measure. In backtests on conditions of this size, forecasts made part-way through the year were typically off by about 15 percent and ran about 1 percent high against the count later registered; forecasts made before the year began were off by about 26 percent and ran about 20 percent low against the count later registered. The part-way figures are from forecasts that used a multiple fitted only on earlier years. These figures rest on a few years of history (target years from 2018 to 2025, varying by figure), place each condition as it is mapped today rather than as it was then, and score against a count for the newest year that was still being revised. Only condition series were scored.

Prediction, not a registry value: median of 36 months from start to primary completion across 57 trials still running at the 2026-10-09 snapshot; registered median of 27 months across 470 trials with a primary completion typed Actual. Source: ClinicalTrials.gov / AACT (CTTI), public domain.

What phase are Pulmonary Embolism trials in? (8)

Shown in this order: phase order.

Show the trials by phase as a table
Trials by phase
Phase Trials
Phase 1 22
Phase 1/2 4
Phase 2 23
Phase 2/3 9
Phase 3 72
Phase 4 69
Not applicable 222
Observational 359

How many Pulmonary Embolism trials are recruiting? (9)

Shown in this order: the order a trial moves through, from not yet recruiting to unknown.

Trials by recruitment status
Status Trials
Not yet recruiting 24
Recruiting 104
Enrolling by invitation 2
Active, not recruiting 23
Completed 427

Status as registered on ClinicalTrials.gov. Each trial is counted once.

Which lead sponsors run the most Pulmonary Embolism trials? (5)

Shown in this order: most trials first. Lead sponsors the registry classes as industry, NIH, US federal, other government or network. A hospital or university the registry files as government can appear here. Sponsors it classes as academic or other are shown on the full page, because that class cannot separate an institution from a named investigator.

Lead sponsors
Sponsor Trials
Bayer 15
University Hospital, Angers 10
Bristol-Myers Squibb 8
Inari Medical 8
Boston Scientific Corporation 7

Which drugs are being tested for Pulmonary Embolism? (5)

Shown in this order: most trials first. One row per drug, matched to a single molecule under all its names, ranked by number of trials.

Drugs tested
Drug Trials
Rivaroxaban 31
LOVENOX 27
Edoxaban 6
(LMW)heparin 5
Innohep 4

Interventions as named in the registry (10)

Shown in this order: most trials first.

Interventions as named in the registry
Drug Trials
Apixaban IR 24
Warfarin VKA 22
Arixtra alone 12
Low Heparin Molecular Weight 11
EC Aspirin 9

These are the names sponsors entered on ClinicalTrials.gov that we have not matched to a single molecule. Some are drugs under a brand or code name; others are procedures, doses or arm labels.

Which serious adverse events do Pulmonary Embolism trials report? (10)

Shown in this order: most subjects affected first. Subjects affected summed across trials, a cross-trial signal, not a rate.

Serious adverse events in this condition's trials
Adverse event Subjects affected Trials
death 829 4
Chronic obstructive pulmonary disease 464 9
Pneumonia 446 23
Deep vein thrombosis 327 18
Pulmonary embolism 318 24

Which publications cover Pulmonary Embolism? (1,385)

Shown in this order: major-topic papers first, then newest, then most linked to trials.

Not on this page

Not measured: delivery record.

Checked, with nothing recorded for this condition: prevalence, rare-disease identity, and sub-conditions in mesh.

Browse all condition evidence pages