Puma Biotechnology Presents Interim Results from the Phase II SUMMIT Trial of Neratinib for EGFR Exon 18-Mutated, Metastatic Non-Small Cell Lung Cancer at WCLC 2020
January 29, 2021 at 01:00 pm
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Puma Biotechnology, Inc. presented interim results from the ongoing SUMMIT trial of neratinib in the cohort of metastatic non-small cell lung cancer (NSCLC) patients with epidermal growth factor (EGFR) exon 18 mutations who have been previously treated with an EGFR targeted tyrosine kinase inhibitor (TKI). The data were presented in an oral discussion at the 2020 World Conference on Lung Cancer (WCLC 2020) presented by the International Association for the Study of Lung Cancer (IASLC) that is currently taking place in Singapore. The presentation, entitled, “Neratinib in Pretreated EGFR Exon 18-Mutated Non-Small Cell Lung Cancer (NSCLC): Initial Findings from the SUMMIT Basket Trial,” is being presented at an Oral Session by Valentina Boni, MD, PhD, START Madrid-CIOCC, Centro Oncologico Clara Campal, HM Sanchinarro. The Phase II SUMMIT basket trial is an open-label, multicenter, multinational study to evaluate the safety and efficacy of neratinib administered daily to patients who have solid tumors with activating EGFR exon 18 or HER2 mutations. In the EGFR exon 18 mutation cohort, patients with lung cancer with single or complex EGFR exon 18 mutations, who were EGFR TKI naïve or were previously exposed to EGFR TKI, were enrolled into this study and received 240 mg of neratinib daily as a single agent. In this cohort of 11, patients had received a median of 2 prior lines of therapy in the metastatic setting (range 1-3 prior regimens) before entering the trial. 10 patients had been previously treated with an EGFR targeted tyrosine kinase inhibitor (gefitinib, erlotinib, osimertinib and/or afatinib). The interim efficacy results from the trial showed that for the 10 evaluable patients who had previously been treated with an EGFR tyrosine kinase inhibitor, 6 patients (60%) experienced a partial response, which included 4 patients (40%) with a confirmed partial response. 8 patients (80%) experienced clinical benefit (clinical benefit is defined as confirmed complete response or partial response or stable disease for at least 16 weeks). The median duration of response was 7.5 months and the median progression-free survival was 9.1 months. The success criteria for both the 1st stage and the 2nd stage of the Simon’s 2-stage design were met and enrollment in the 2nd stage of this cohort continues. The safety profile observed in the subgroup of patients with EGFR exon 18-mutated NSCLC showed that for the 11 patients who received neratinib in the trial, there were no reports of grade 3 or higher diarrhea. 4 patients (36%) reported grade 1 and 1 patient (9%) reported grade 2 diarrhea. No patients required a dose hold, dose reduction, hospitalization or permanently discontinued neratinib due to diarrhea.
Puma Biotechnology, Inc. is a biopharmaceutical company. The Company is focused on the development and commercialization of products to enhance cancer care. The Company's lead product is NERLYNX, an oral version of neratinib, for the treatment of HER2-positive breast cancer. Neratinib is a potent irreversible tyrosine kinase inhibitor (TKI) that blocks signal transduction through the epidermal growth factor receptors, HER1, HER2 and HER4 It also engaged in the development and commercialization of, alisertib. Alisertib is a selective, small molecule inhibitor of aurora kinase A that is designed to disrupt mitosis leading to apoptosis of rapidly proliferating tumor cells that are dependent on aurora kinase A. Its neratinib has clinical application in the treatment of several other cancers as well, including other tumor types that over-express or have a mutation in HER2 or epidermal growth factor receptor (EGFR), such as breast cancer, cervical cancer, lung cancer, or other solid tumors.
Puma Biotechnology Presents Interim Results from the Phase II SUMMIT Trial of Neratinib for EGFR Exon 18-Mutated, Metastatic Non-Small Cell Lung Cancer at WCLC 2020