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Brazil launches major study to map hidden vein disease crisis

NCT ID NCT06683586

Knowledge-focused Sponsor: Vinícius C Quintão, MD, MSc, PhD Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 27, 2026 · Last updated Jun 27, 2026

Summary

This study looked at 650 Brazilian patients with chronic venous disease (CVD), a condition that causes leg swelling, skin changes, and ulcers due to faulty veins. Researchers collected data on risk factors like obesity and smoking, other health problems, and treatments used. The goal was to create a detailed picture of CVD in Brazil to help doctors manage it better.

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.

Participants

650 people

The number who actually took part.

Started

Oct 2024

Finished

Dec 2025

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.

Who is studied

Adult patients (≥ 18 years) diagnosed with chronic venous disease.

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: * Patients of both sexes diagnosed with chronic venous disease; * Age equal to or greater than 18 years; * Signature of the informed consent form. Exclusion Criteria: * Non-agreement to participate in the study; * Pregnant women.

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Conditions

The condition(s) this trial relates to.

chronic venous insufficiency

As listed by the trial registrant

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

Chronic venous disease

Contacts and locations

Locations

  • Hospital das Clinicas HCFMUSP

    São Paulo, 0543000, Brazil

More trials for these conditions

Other studies related to the condition(s) this trial covers.