Can stronger radiation tame inoperable rectal cancer without surgery?

NCT ID NCT07721181

First seen Jul 22, 2026 · Last updated Jul 23, 2026 · Updated 1 time

Summary

This trial investigates whether giving a higher dose of radiotherapy can safely control locally recurrent rectal cancer that cannot be surgically removed. Around 30 adults with this condition will receive either stereotactic body radiotherapy or hyperfractionated chemo-reirradiation. The goal is to see if this approach is feasible and keeps the cancer in check while limiting side effects.

What this could mean

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

Active substance
radiotherapy dose escalation (SBRT or hyperfractionated chemo-reirradiation)
What this could lead to
If successful, this approach could offer a non-surgical way to control locally recurrent rectal cancer, potentially improving symptom control and delaying disease progression.
What could go wrong
This is a small feasibility study, not a large trial. Higher radiation doses carry a risk of serious side effects, and it is unclear whether the benefits will outweigh the risks.

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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

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

  • Contact

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

Locations

  • Catharina Hospital

    RECRUITING

    Eindhoven, Netherlands

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

  • Erasmus Medical Centre

    NOT_YET_RECRUITING

    Rotterdam, Netherlands

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

  • Radiotherapiegroep

    NOT_YET_RECRUITING

    Arnhem, Netherlands

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

  • Rijnstate

    NOT_YET_RECRUITING

    Arnhem, Netherlands

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

  • University Medical Centre Utrecht

    NOT_YET_RECRUITING

    Utrecht, Netherlands

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

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