Registry for Molecular Testing, Treatment 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.