Purpose Rearranged during transfection (RET) gene rearrangement is a well-known driver event in non–small cell lung cancer (NSCLC). Pralsetinib is a selective inhibitor of RET kinase and has shown efficacy in oncogenic RET-altered tumors. This study evaluated the efficacy and safety of expanded access program (EAP) use of pralsetinib in pretreated, advanced NSCLC patients with RET rearrangement.
Materials and Methods Patients who received pralsetinib as part of the EAP at Samsung Medical Center were evaluated through a retrospective chart review. The primary endpoint was overall response rate (ORR) per the Response Evaluation Criteria in Solid Tumors (RECIST) ver. 1.1 guidelines. Secondary endpoints were duration of response, progression-free survival (PFS), overall survival (OS), and safety profiles.
Results Between April 2020 and September 2021, 23 of 27 patients were enrolled in the EAP study. Two patients who were not analyzed due to brain metastasis and two patients whose expected survival was within 1 month were excluded from the analysis. After a median follow-up period of 15.6 months (95% confidence interval [CI], 10.0 to 21.2), ORR was 56.5%, the median PFS was 12.1 months (95% CI, 3.3 to 20.9), and the 12-month OS rate was 69.6%. The most frequent treatment-related adverse events (TRAEs) were edema (43.5%) and pneumonitis (39.1%). A total of 8.7% of patients experienced extra-pulmonary tuberculosis. TRAEs with a common grade of three or worse were neutropenia (43.5%) and anemia (34.8%). Dose reduction was required in nine patients (39.1%).
Conclusion Pralsetinib presents a clinical benefit when used in patients with RET-rearranged NSCLC, consistent with a pivotal study.
Citations
Citations to this article as recorded by
Real-World Outcomes of Pralsetinib in RET Fusion-Positive NSCLC Francesca Lucibello, Valérie Gounant, Mihaela Aldea, Michaël Duruisseaux, Maurice Perol, Christos Chouaid, Jaafar Bennouna, Vincent Fallet, Aldo Renault, Florian Guisier, Etienne Giroux-Leprieur, Marie Wislez, Anne-Claire Toffart, Julien Mazieres, Clémenc JTO Clinical and Research Reports.2025; 6(1): 100743. CrossRef
Clinical evidence and adverse event management update of patients with RET- rearranged advanced non-small-cell lung cancer (NSCLC) treated with pralsetinib Giuseppe Lo Russo, Paolo Bironzo, Chiara Bennati, Laura Bonanno, Annamaria Catino, Giulio Metro, Iacopo Petrini, Marco Russano, Antonio Passaro Critical Reviews in Oncology/Hematology.2024; 194: 104243. CrossRef
RET Fusion Testing in Patients With NSCLC: The RETING Study Esther Conde, Susana Hernandez, Jose Luis Rodriguez Carrillo, Rebeca Martinez, Marta Alonso, Daniel Curto, Beatriz Jimenez, Alejandra Caminoa, Amparo Benito, Pilar Garrido, Sergi Clave, Edurne Arriola, Isabel Esteban-Rodriguez, Javier De Castro, Irene San JTO Clinical and Research Reports.2024; 5(4): 100653. CrossRef
Efficacy and safety of pralsetinib in patients with RET fusion positive non–small cell lung cancer: An observational real world study Dehua Liao, Minghui Long, Jiwen Zhang, Xingyu Wei, Fei Li, Ting Yan, Desong Yang Lung Cancer.2024; 196: 107936. CrossRef