Skip to content
Clinical Trials – home
Recruiting

Study on Cemiplimab and OSE2101 for Maintenance Therapy in Patients with ctDNA Positive Non-Small Cell Lung Cancer (NSCLC)

Fast replyRegistered drug
Clinical Trials Concierge

Prefer not to search? Our Concierge searches the trials for you.

What is this trial about?

A plain-language summary of the goals, design and what participants do

This clinical trial is focused on studying a type of lung cancer known as non-small cell lung cancer (NSCLC). The study will explore the effects of a combination of treatments, including Cemiplimab (also known by its code name REGN2810), OSE2101 (TEDOPI®), and possibly Pemetrexed. Cemiplimab is a medication given through an infusion, which means it is delivered directly into the bloodstream. TEDOPI® is administered as an injection, and Pemetrexed is also given by infusion.

The purpose of this study is to see how well these treatments work together in patients with NSCLC who have a specific genetic marker called HLA-A2 and have not shown disease progression after initial treatment. The study will compare the effectiveness of the combination of TEDOPI® and Cemiplimab against Cemiplimab alone, with or without Pemetrexed, which is considered the standard maintenance treatment. The main focus is on how these treatments affect the presence of cancer-related DNA in the blood, known as ctDNA.

Participants in the study will receive their assigned treatments over a period of time, and their health will be monitored to assess the impact of the treatments. The study aims to gather information on overall survival, how long patients live without the cancer getting worse, and the overall response to the treatment. Additionally, the study will look at any side effects experienced by participants and how other biological markers, such as PD-L1 and TMB, relate to treatment outcomes.

The research process

The trial runs in 7 steps – from screening to follow-up. Each step says what happens and what the team monitors.

  1. Step 1

    Joining the study

    Upon joining the study, you will be informed about the trial's purpose and procedures. You will need to provide a signed informed consent before any trial-specific procedures begin.

  2. Step 2

    Initial assessment

    An initial assessment will be conducted to confirm your eligibility. This includes verifying a diagnosis of non-small cell lung cancer (NSCLC) and checking if you are HLA-A2 positive.

  3. Step 3

    Treatment allocation

    You will be randomly assigned to one of the treatment groups. One group will receive cemiplimab plus TEDOPI, and the other group will receive cemiplimab with or without pemetrexed.

  4. Step 4

    Treatment administration

    If you are in the cemiplimab plus TEDOPI group, you will receive LIBTAYO 350 mg as a concentrate for solution for infusion and TEDOPI as an emulsion for injection.

    If you are in the cemiplimab with or without pemetrexed group, you will receive LIBTAYO 350 mg as a concentrate for solution for infusion and Armisarte 25 mg/ml as a concentrate for solution for infusion if pemetrexed is included.

  5. Step 5

    Treatment schedule

    The treatment will be administered according to the schedule provided by the study team. The frequency and duration of administration will be explained to you in detail.

  6. Step 6

    Monitoring and follow-up

    Throughout the trial, your health and response to the treatment will be closely monitored. Regular follow-up visits will be scheduled to assess your condition and any side effects.

  7. Step 7

    End of trial

    The trial is expected to end by April 6, 2029. At the end of the trial, you will have a final assessment to evaluate the overall outcomes and any long-term effects of the treatment.

Who can join the trial?

7 criteria

  • Confirmed diagnosis of advanced or metastatic non-small-cell lung cancer (NSCLC) that is not driven by specific genetic changes. This means the cancer is either locally advanced and cannot be treated with a combination of chemotherapy and radiation, or it has spread to other parts of the body.
  • Eligible for first-line treatment with a combination of chemotherapy and immunotherapy, regardless of PD-L1 levels. PD-L1 is a protein that can affect how the immune system responds to cancer.
  • Positive for HLA-A2, which is a specific type of protein found on the surface of cells that is important for the immune system.
  • Have an ECOG Performance Status of 0-1. This is a scale used to assess how well a patient can perform daily activities. A score of 0 means fully active, and 1 means some symptoms but nearly fully active.
  • Must provide signed informed consent before participating in any trial-specific procedures. This means you understand the trial and agree to participate.
  • Open to both male and female participants.
  • Participants must be within the specified age range for the trial.

Who cannot join the trial?

2 criteria

  • Patients who do not have HLA-A2 positive status. HLA-A2 is a specific type of protein found on the surface of cells that is important for the immune system.
  • Patients whose non-small cell lung cancer (NSCLC) is still progressing after 4 cycles of chemoimmunotherapy. Chemoimmunotherapy is a treatment that combines chemotherapy and immunotherapy to fight cancer.
Clinical Trials Concierge

Prefer not to search? Our Concierge searches the trials for you.

Tell us about your condition – we search every trial in Europe and connect you with the right site.

We usually reply within a few days

Verified sites

All sites with verified contact details – recruitment status may not be available; ask directly

Trial locations

Where you can join this trial

Countries are shaded by recruitment status. Click a recruiting country to ask about joining there.

Recruiting
Not finding your country?

Not sure what to do next?

Joining a clinical trial can seem overwhelming. We guide you step by step, so you know exactly what to expect and how we support you through the process.

See the full process and FAQ

Investigated drugs

  • Cemiplimab

    is a type of medication known as an immune checkpoint inhibitor. It works by helping your immune system recognize and attack cancer cells more effectively. In this trial, it is used to help maintain the progress made after initial treatment in patients with a specific type of lung cancer.

  • OSE2101 (TEDOPI®)

    is a therapeutic cancer vaccine. It is designed to stimulate your immune system to target and destroy cancer cells. In this study, it is used alongside cemiplimab to see if it can help clear cancer-related DNA from the blood, which may indicate a reduction in cancer activity.

  • Pemetrexed

    is a chemotherapy drug that works by interfering with the growth of cancer cells, slowing or stopping their spread. In this trial, it is used as part of the standard maintenance treatment to help keep the cancer from growing after initial therapy.

What is already known about the treatment

  • Cemiplimab

    Cemiplimab is administered as an intravenous infusion, meaning it is given directly into the bloodstream through a vein. It is currently being studied in clinical trials for its effectiveness in treating non-small cell lung cancer (NSCLC). The main therapeutic use of cemiplimab is to help the immune system recognize and attack cancer cells. It works by blocking a protein called PD-1 on immune cells, which can help the immune system to better detect and destroy cancer cells. Cemiplimab is classified as an immune checkpoint inhibitor, a type of drug that helps the immune system fight cancer.

  • OSE2101 (TEDOPI®)

    OSE2101, also known as TEDOPI®, is administered as an injection under the skin, similar to how some vaccines are given. It is being explored in clinical trials for its potential to treat non-small cell lung cancer (NSCLC). The main therapeutic goal of OSE2101 is to stimulate the body's immune response against cancer cells. It works by presenting specific cancer-related proteins to the immune system, encouraging it to recognize and attack cancer cells. OSE2101 is classified as a therapeutic cancer vaccine, designed to boost the immune system's ability to fight cancer.

Investigated diseases

Non-Small Cell Lung Cancer – Non-Small Cell Lung Cancer (NSCLC) is a type of lung cancer that includes several subtypes, such as adenocarcinoma, squamous cell carcinoma, and large cell carcinoma. It typically begins in the epithelial cells lining the lungs and is characterized by the formation of malignant tumors. The disease progresses as these cancerous cells grow uncontrollably, potentially spreading to other parts of the body. NSCLC is often associated with symptoms like persistent cough, chest pain, and shortness of breath. As the cancer advances, it may invade nearby tissues and organs, leading to further complications. The progression of NSCLC can vary significantly depending on the subtype and individual patient factors.
Trial detailsLast updated 2 Oct 2026
Age18+ yearsPhasePhase IITrial ID2024-519262-42-00Estimated enrolment90 patientsSponsorFondazione Ricerca Traslazionale

sourced from the EU Clinical Trials Register and site verification

Want to learn more about this trial or check if you can participate?

Clinical Trials Concierge

Prefer not to search? Our Concierge searches the trials for you.

Tell us about your condition – we search every trial in Europe and connect you with the right site.

Legal notice · Published by CTIN POLAND sp. z o.o., ul. rtm. Witolda Pileckiego 67/109, 02-781 Warsaw, Poland · KRS 0001111334 · REGON 528919042 · NIP 9512598637

© 2026 Clinical Trials EU – European Clinical Trials Information Network

GDPR compliance, ISO 9001 and ISO 27001 certified (LL-C Certification)

On this site, “treatment” means an investigational medicine being studied in a clinical trial. Its safety and efficacy for the use being studied have not yet been confirmed, some participants may receive a placebo or a comparator medicine, and taking part does not guarantee any health benefit. The decision to take part is made by the doctor at the research site. This site is for information only and does not replace medical advice.

This service is not affiliated with the European Commission, the EMA, or the official CTIS system. Most information comes from publicly available international clinical-trial registries, supplemented by data from academic sites, national regulators and commercial sponsors. On this site, “treatment” and “therapy” mean a medicine being tested in a clinical trial. Its safety and effectiveness in the use being studied are not yet confirmed, some participants may receive a placebo or a comparator, and taking part does not guarantee a health benefit. The doctor at the research site decides who can take part. This site provides information, not medical advice. Certain content and visual elements on this website have been generated or enhanced using artificial intelligence (AI).