Glowing dye could reveal hidden cancer spread in testicular tumors

NCT ID NCT07699640

First seen Jul 13, 2026 · Last updated Jul 14, 2026 · Updated 1 time

Summary

This trial investigates whether a minimally invasive procedure using a special dye can better detect cancer spread in men with early-stage testicular cancer. About 20-30% of these patients have cancer cells in lymph nodes that standard scans miss. Participants are randomly assigned to receive either standard surgery plus a dye-guided lymph node biopsy or standard surgery alone. The goal is to see if the dye-guided approach improves relapse-free survival and reduces unnecessary treatments.

What this could mean

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

Active substance
Indocyanine green (ICG) dye
What this could lead to
If successful, this approach could provide more accurate staging for early testicular cancer, helping to avoid unnecessary treatments while catching hidden spread earlier.
What could go wrong
This is a relatively early-stage trial with 171 participants, so results may not apply broadly. The procedure carries surgical risks, and the dye may not identify all affected lymph nodes.

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

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

Contacts and locations

Study contacts

  • Contact

    Email: •••••@•••••

  • Contact

    Phone: •••-•••-•••• Email: •••••@•••••

Locations

  • Asklepios Klinik Altona

    Hamburg, Free and Hanseatic City of Hamburg, 22763, Germany

    Contact Phone: •••-•••-•••• Email: •••••@•••••

  • Helios University Hospital Wuppertal

    Wuppertal, North Rhine-Westphalia, 42283, Germany

    Contact Phone: •••-•••-•••• Email: •••••@•••••

  • Helsinki University Hospital

    Helsinki, 00014, Finland

  • University Hospital Cologne

    Cologne, North Rhine-Westphalia, 50937, Germany

    Contact Phone: •••-•••-•••• Email: •••••@•••••

  • University Hospital Dresden

    Dresden, Saxony, 01307, Germany

    Contact Phone: •••-•••-•••• Email: •••••@•••••

  • University Hospital Düsseldorf

    Düsseldorf, North Rhine-Westphalia, 40225, Germany

    Contact Email: •••••@•••••

    Contact Phone: •••-•••-•••• Email: •••••@•••••

    Contact

  • University Hospital Marbug

    Marburg, Hesse, 35043, Germany

    Contact Phone: •••-•••-•••• Email: •••••@•••••

  • University Hospital Ulm

    Ulm, Baden-Wurttemberg, 89081, Germany

    Contact Phone: •••-•••-•••• Email: •••••@•••••

  • University Hospital Würzburg

    Würzburg, Bavaria, 97080, Germany

    Contact Phone: •••-•••-•••• Email: •••••@•••••

  • University of Turku

    Turku, 20520, Finland

    Contact Phone: •••-•••-•••• Email: •••••@•••••

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