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Can a national registry reveal the secrets to better kidney surgery?

NCT ID NCT04681690

Knowledge-focused Sponsor: Association of Urologic Oncology (AUO) 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
The trial has finished. Results may not be published yet.
Stopped early This study
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This status has not been confirmed recently, so it may be out of date.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 Aug 26, 2026 · Last updated Aug 27, 2026 · Updated 1 time

Summary

This study is a German national registry that collects information from adults undergoing partial nephrectomy, a surgery to remove kidney tumors while preserving healthy kidney tissue. The goal is to track complications, kidney function after surgery, and survival rates to understand what factors contribute to high-quality surgical care. By analyzing this real-world data, researchers hope to identify areas for improvement in treating kidney tumors.

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 registry could pinpoint which factors most influence surgical quality, potentially guiding improvements in partial nephrectomy care and outcomes for kidney tumor patients.
What could go wrong
As an observational registry, it cannot prove cause and effect, and findings may be limited by the diversity of participating centers and the completeness of data collected.

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

137 people

The number who actually took part.

Started

Dec 2020

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

Patients with a renal mass eligible for partial nephrectomy

Ages

18 to 100 years

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 * Written informed consent * Localized renal parenchymal mass amenable to nephron-sparing surgery * Adequate imaging of the abdomen (CT or MR with contrast) Exclusion Criteria: * Patient with (or suspected to have) urothelial cancer of the kidney * Prior nephron-sparing surgery on ipsilateral kidney * metastasized renal cell carcinoma

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Conditions

The condition(s) this trial relates to.

kidney cancer kidney neoplasm

As listed by the trial registrant

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

Kidney neoplasm

Contacts and locations

Locations

  • Alexianer St. Hedwig-Krankenhaus

    Berlin, 10115, Germany

  • MHH

    Hanover, Lower Saxony, 30625, Germany

  • Saarland University

    Homburg/Saar, 66421, Germany

  • Sana Klinikum Hof

    Hof, Bavaria, 95032, Germany

  • Vivantes Humboldt Klinikum

    Berlin, State of Berlin, Germany

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