ALE.P03

Clinical trials are investigating ALE.P03 in adults with selected advanced or metastatic CLDN1+ solid tumors. These studies are looking at safety, tolerability, dose finding, and early signs of anti-tumor activity. The trial includes Phase 1 and Phase 2 parts.

Table of contents

Trial overview

This clinical trial is studying ALE.P03 in adult patients with selected advanced or metastatic CLDN1+ solid tumors.[1] It is an interventional study, which means participants receive the study treatment so researchers can evaluate its effects.[1]

The trial is designed as a Phase 1/2 study.[1] The source data show that Phase 1 is for dose escalation and safety, while Phase 2 is for anti-tumor activity.[1]

Who can participate

The study is for adult patients with selected advanced or metastatic solid tumors that are CLDN1+.[1] In simple terms, the cancer must be at an advanced stage or have spread, and it must show the CLDN1 marker.[1]

The trial title says the study is for selected tumor types, so not every solid tumor is included.[1] The data also note that trial results may be analyzed by CLDN1 expression and by tumor type subgroup, which means the researchers may compare results across different cancer groups.[1]

Study phases and goals

Phase 1 is the first part of the study and focuses on safety and tolerability.[1] It includes dose escalation, which means the dose is increased step by step to learn what can be given safely.[1]

Phase 1 also aims to establish the recommended Phase 2 dose, sometimes shortened to RP2D.[1] This is the dose chosen for later testing after early safety and dose-finding results.[1]

Phase 2 focuses on anti-tumor activity, meaning whether ALE.P03 shows signs of helping against the cancer.[1] The brief summary says Phase 2 is meant to assess the anti-tumor activity of ALE.P03.[1]

What is being measured

In Phase 1, the study measures dose-limiting toxicities, which are side effects serious enough to limit treatment.[1] It also measures the number and severity of adverse events and serious adverse events.[1]

The trial checks for clinically significant changes in laboratory values, vital signs, and ECGs.[1] Laboratory values are results from blood or other tests, vital signs are basic health measurements such as blood pressure and pulse, and ECGs are heart tracing tests.[1]

Researchers also look at tolerability, including dose interruptions and dose intensity.[1] Dose interruptions mean treatment is paused, and dose intensity reflects how much treatment is actually given over time.[1]

For early efficacy, the study uses RECIST 1.1, a standard method for measuring tumor response.[1] The endpoints include overall response rate, or ORR, which combines complete response and partial response, and duration of response, or DoR, which shows how long a response lasts.[1]

In Phase 2, the main efficacy endpoints are ORR and DoR by RECIST 1.1.[1] The data also say that subgroup analyses may be done by CLDN1 expression and tumor type.[1]

Trial status and size

The study status is Authorised.[1] The planned enrollment is 180 participants.[1]

The source data identify one trial record: NCT 2025-521441-24-00.[1] This record describes the study of ALE.P03 in adults with selected advanced or metastatic CLDN1+ solid tumors.[1]

Trial ID Phase Condition studied Status Enrollment
2025-521441-24-00 Phase 1/2 Advanced or metastatic CLDN1+ solid tumors Authorised 180

Ongoing Clinical Trials on ALE.P03

  • Study of ALE.

    Recruiting

    2 1 1
    Investigated drugs:
    France Italy The Netherlands Spain

Glossary

  • Advanced solid tumors: Solid cancers that have grown beyond the original site and are harder to treat.
  • Metastatic: Cancer that has spread from where it started to other parts of the body.
  • CLDN1+: A tumor test result showing the cancer has CLDN1, a marker used to select patients for this study.
  • Interventional study: A clinical trial where people receive a treatment so researchers can study its effects.
  • Phase 1: The first part of a trial, mainly focused on safety, side effects, and finding the right dose.
  • Phase 2: A trial stage that looks more closely at whether the treatment may work against the disease.
  • Dose escalation: A step-by-step increase in dose to learn which amount can be given safely.
  • Recommended Phase 2 dose: The dose chosen for later testing after early safety and dose-finding results.
  • Dose-limiting toxicities: Side effects serious enough to limit how much treatment can be given.
  • Adverse events: Medical problems or unwanted effects seen during a study.
  • Serious adverse events: Unwanted effects that are severe and may need urgent medical care.
  • RECIST 1.1: A standard way to measure how tumors change in size during a cancer trial.

References

  1. https://clinicaltrials.gov/study/2025-521441-24-00