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Evaluation of Safety, Tolerability and Response of ATO-101™ in Patients With Non-Muscle-Invasive Bladder Cancer (PERSEVERANCE EU)

NCT07260162 · Status: NOT_YET_RECRUITING · Phase: PHASE1 · Type: INTERVENTIONAL · Enrollment: 24

Last updated 2025-12-03

No results posted yet for this study

Summary

Non-Muscle-Invasive Bladder cancer (NMIBC) tumours often recur despite TransUrethral Resection of Bladder (TURB) and Bacillus Calmette-Guerin (BCG) intravesical instillations, and have no effective conservative treatment options. Alpha emitters like Astatine-211 (211At), due to their short path and short half-life, show promise for superficial targets such as NMIBC.

Carbonic anhydrase IX (CAIX), overexpressed in 70-90% of NMIBC cases but absent in healthy tissues, is an ideal target.

A clinical feasibility Positron emission tomography-computed tomography (PET/CT) imaging study (Pertinence, NCT04897763) was conducted at Institut de cancérologie Ouest (ICO) in six patients using Girentuximab labelled with Zirconium-89 (\[89Zr\]Zr-girentuximab). It demonstrated successful tracer targeting and no radioactive leakage beyond the bladder following intravesical instillation. The study also confirmed the absence of toxicity, contamination, or significant additional staff radiation exposure.

ATO-101™ (\[²¹¹At\]At-girentuximab) could enable localised tumour destruction while preserving the bladder in patients with BCG-unresponsive NMIBC. The ongoing First In Human (FIH) study evaluate the safety of ATO-101™ in patients with BCG-unresponsive NMIBC.

Conditions

Interventions

DRUG

ATO-101™

The study drug: \[211At\]At-Girentuximab (ATO-101™) is administered via intravesical instillation

Sponsors & Collaborators

  • Institut Cancerologie de l'Ouest

    lead OTHER

Principal Investigators

  • Caroline ROUSSEAU, MD, PhD · Institut de Cancérologie de l'OUEST _ ICO

Study Design

Allocation
NA
Purpose
TREATMENT
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2026-02-28
Primary Completion
2027-08-31
Completion
2028-08-31

Countries

  • France

Study Locations

More Related Trials

Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07260162 on ClinicalTrials.gov