Afatinib is provided on a single-patient protocol basis to patients suffering from tumors harboring NRG1 fusions, a disease for which no satisfactory authorised alternative therapy exists.~In the context of this mechanism it is planned to collect and analyze limited clinical data in order to investigate the safety and efficacy of afatinib in patients with advanced and/or metastatic solid tumours harboring NRG1 gene fusions.
Gene fusions are defined as two separate genes joined together (gene 1, gene 2), generating a novel fusion gene. NRG1 fusions are rare and complex with regard to the fusion/fusion partner. The specific NRG1 gene fusion will be identified by a specialized molecular testing lab.