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Condition (MeSH)

Empyema

ClinicalTrials.gov lists 57 trials for Empyema or a narrower condition beneath it.

MeSH D004653 Infections C01 C23
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Phase 1 Phase 1 1 Phase 2 Phase 2 3 Phase 2/3 Phase 2/3 2 Phase 3 Phase 3 7 Phase 4 Phase 4 8 Not applicable Not applicable 22 Observational Observational 14 Phase 1 Phase 1 1 Phase 2 Phase 2 3 Phase 2/3 Phase 2/3 2 Phase 3 Phase 3 7 Phase 4 Phase 4 8 Not applicable Not applicable 22 Observational Observational 14

Trials per phase (log scale)

34 of the 57 trials are tagged with Empyema itself; the rest are tagged with a narrower condition beneath it.

Get the Empyema 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 Empyema trials start? (23)

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.

Trials over time, by phase

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

Top of scale: 5

2003: 1 trials (Phase 4 1) 2004: 2 trials (Not applicable 2) 2005: 2 trials (Observational 1, Phase 3 1) 2006: 1 trials (Phase 2/3 1) 2007: 1 trials (Phase 2/3 1) 2008: 1 trials (Phase 3 1) 2009: 2 trials (Observational 1, Phase 3 1) 2010: 2 trials (Observational 1, Phase 2 1) 2011: 2 trials (Observational 1, Not applicable 1) 2012: 2 trials (Phase 3 2) 2014: 2 trials (Observational 1, Not applicable 1) 2015: 2 trials (Phase 4 1, Phase 3 1) 2016: 1 trials (Phase 3 1) 2017: 2 trials (Not applicable 1, Phase 4 1) 2018: 4 trials (Observational 2, Not applicable 2) 2019: 4 trials (Observational 1, Not applicable 2, Phase 4 1) 2020: 3 trials (Observational 1, Not applicable 1, Phase 4 1) 2021: 5 trials (Observational 2, Not applicable 2, Phase 4 1) 2022: 4 trials (Observational 1, Not applicable 2, Phase 2 1) 2023: 2 trials (Not applicable 2) 2024: 5 trials (Observational 1, Not applicable 4) 2025: 2 trials (Not applicable 1, Phase 4 1)

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) 4
2025 2
2024 5
2023 2
2022 4
2021 5
2020 3
2019 4
2018 4
2017 2

No forecast is made for this condition: it averages 3.4 trial starts a year over the five years to September, under the 5 a year the method needs.

Prediction, not a registry value: median of 36 months from start to primary completion across 6 trials still running at the 2026-10-09 snapshot; registered median of 24 months across 30 trials with a primary completion typed Actual. Source: ClinicalTrials.gov / AACT (CTTI), public domain.

What phase are Empyema trials in? (7)

Shown in this order: phase order.

Show the trials by phase as a table
Trials by phase
Phase Trials
Phase 1 1
Phase 2 3
Phase 2/3 2
Phase 3 7
Phase 4 8
Not applicable 22
Observational 14

How many Empyema trials are recruiting? (6)

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 4
Recruiting 6
Completed 28
Terminated 2
Withdrawn 1

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

Which drugs are being tested for Empyema? (1)

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
Urokinase 2

Interventions as named in the registry (14)

Shown in this order: most trials first.

Interventions as named in the registry
Drug Trials
insertion of a chest drain with urokinase instillation 2
Intrapleural Medications 2
Alteplase t-PA 2
antibiotic concentration in pleural fluid 1
Conservative Arm 1

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 Empyema 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
Serious bleeding 6 1
Bronchopleural fistula 2 1
Hemothorax 2 1
Low hemoglobin levels 2 1
Pneumothorax 2 2

Which publications cover Empyema? (27)

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

Sub-conditions in MeSH (1)

MeSH descendants one level down with at least one trial, most trials first.

Not on this page

Not measured: delivery record.

Checked, with nothing recorded for this condition: lead sponsors, prevalence, and rare-disease identity.

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