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Lung fluid may replace biopsies for cancer testing

NCT ID NCT04806412

Knowledge-focused Sponsor: Naestved Hospital Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study looks at fluid from around the lungs (pleural effusion) in people with non-small cell lung cancer. Researchers want to see how often important cancer markers like PD-L1, ALK, and EGFR can be found in that fluid. They will also check if the amount of fluid tested affects the results. The goal is to learn whether this fluid can be used instead of a tissue biopsy to choose the right treatment.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

What this could lead to
If successful, this study could help doctors use pleural fluid instead of tissue biopsies to guide lung cancer treatment, reducing the need for invasive procedures.
What could go wrong
This is an observational study, not a treatment trial. It only measures existing markers and does not test a new therapy, so it won't directly improve outcomes.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 100 people

The number the study aims to enrol. It can still change while the study runs.

Started

Mar 2021

Expected to finish

Dec 2028

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Age ≥ 18 years * Pleural effusion known or suspected of association with NSCLC (pleural fluid cytology positive for cells from NSCLC) * Patients must be able to give informed consent Exclusion Criteria: * Full oncodriver status measured in any pleural fluid in current work-up * Inability to understand written or spoken Danish.

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Conditions

The condition(s) this trial relates to.

non-small cell lung carcinoma Pleural Effusion, Malignant

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Malignant pleural effusion Non-small cell lung cancer

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Næstved Sygehus, department of pulmonary medicine

    RECRUITING

    Næstved, Region Sjælland, 4700, Denmark

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