Registry for Molecular Testing, Treatment and Outcome of Patients With Solid Tumors Harboring a NTRK Gene Fusion

  • End date
    Oct 25, 2026
  • participants needed
  • sponsor
Updated on 22 December 2021


The objective of this registry is to analyze treatment reality and outcome of patients with locally advanced or metastatic solid tumors harboring a fusion of NTRK1, NTRK2 or NTRK3


The REALTRK registry will provide data on treatment reality of patients with locally advanced or metastatic solid tumors harboring NTRK1, NTRK2 or NTRK3 gene fusions, thereby generating real world evidence. It will identify factors that influence treatment decisions after receiving the diagnosis of a NTRK (Neurotrophic Tyrosine Receptor Kinase) fusion-positive cancer. All treatment lines administered before and after the molecular diagnosis of a NTRK fusion-positive cancer, irrespective of the type of antineoplastic treatment, will be documented. Data will be assessed at least 36 months per patient (i.e. until 36 months after inclusion of the last patient in the study). This approach will allow a description of TRK fusion protein-targeted therapies and other therapy strategies regarding effectiveness and disease-related symptomology within the limitations of non-randomized studies in terms of comparative analyses. Intra-individual and inter-individual comparisons (for the latter, provided that a sufficient number of patients with a NTRK fusion-positive cancer are not treated with a TRK inhibitor) could be performed.

The associated biomarker profiling module of the REALTRK registry will aim to set up a decentralized biobank for future research on molecular alterations.

Condition NTRK Family Gene Mutation
Clinical Study IdentifierNCT04557813
Last Modified on22 December 2021


Yes No Not Sure

Inclusion Criteria

Locally advanced or metastatic solid tumor with a documented NTRK gene fusion, based on a validated assay (according to current ESMO recommendations)
Criteria according to the current SmPCs of the used TRK inhibitors
Molecular pathology or molecular diagnostics report with details on NTRK gene fusion testing must be available
Signed and dated informed consent form (ICF) (only if patient is alive at time of data entry into the project; not applicable for inclusion of deceased patients' data)
Age ≥ 18 years

Exclusion Criteria

Treatment with a TRK inhibitor prior to Sept 19th, 2019
Participation in a clinical trial with a TRK inhibitor before or at enrolment (living patients) or before inclusion (deceased patients)
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If you are confirmed eligible after full screening, you will be required to understand and sign the informed consent if you decide to enroll in the study. Once enrolled you may be asked to make scheduled visits over a period of time.

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