TheraSure CNI-Monitor blood test for people with advanced NSCLC receiving immunotherapy

Validation of the TheraSure CNI-Monitor Under Immuno-checkpoint-therapy (Hereinafter: "Immunotherapy") in NSCLC in Palliative Therapy

Observational University Medical Center Goettingen · NCT05426668

This will test whether a blood-based TheraSure CNI-Monitor can detect tumor DNA changes and help predict or track response in adults with non-curative (stage III/IV) NSCLC who are receiving immunotherapy.

Quick facts

Study typeObservational
Enrollment170 (estimated)
Ages18 Years and up
SexAll
SponsorUniversity Medical Center Goettingen Academic / other
Drugs / interventionschemotherapy, Immunotherapy
Locations3 sites (Göttingen, Lower Saxony and 2 other locations)
Trial IDNCT05426668 on ClinicalTrials.gov

What this trial studies

This is a prospective, non-interventional multicenter study at three German sites that collects blood plasma from patients with non-curative stage III or IV NSCLC receiving immunotherapy. Cell-free DNA in plasma will be analyzed by next-generation sequencing to quantify copy-number instability (CNI) using the TheraSure CNI-Monitor, which is sensitive to low tumor DNA fractions. Researchers will correlate CNI scores over time with patients' clinical course and treatment outcomes without changing standard care. The aim is to validate whether serial CNI measurements can serve as a minimally invasive marker of response or progression during immunotherapy.

Who should consider this trial

Good fit: Adults (≥18) with non-curatively treatable stage III or IV NSCLC who are receiving immunotherapy (monotherapy, dual immunotherapy, or immunotherapy plus chemotherapy) and can give informed consent are eligible.

Not a fit: Patients with curative disease, those not receiving immunotherapy, those with severe anemia (Hb < 9 g/dL), or those unable to give informed consent are unlikely to benefit from or be eligible for this observational validation.

Why it matters

Potential benefit: If successful, the test could provide a simple blood-based way to predict and monitor which patients benefit from immunotherapy, enabling earlier and better-informed treatment decisions.

How similar studies have performed: Prior small cohorts and other cfDNA/CNV-based approaches have shown promise detecting tumor-derived DNA and correlating with outcomes, but broad validation specifically in NSCLC patients on immunotherapy is still limited.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Signed informed consent form
* Age ≥18 years
* NSCLC, non-curatively treatable stage III or stage IV with palliative treatment indication
* Immunocheckpoint-therapy for malignant disease (Immunotherapy as monotherapy, double immunotherapy or combination with chemotherapy)

Exclusion Criteria:

* Person is unable to understand the nature, importance and scope of the clinical trial
* Participation in an interventional study
* Hb value \<9g/dl

Where this trial is running

Göttingen, Lower Saxony and 2 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions NSCLC
Last reviewed 2026-06-10 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.