Boehringer Ingelheim gets USFDA priority review for Zongertinib for HER2 (ERBB2)-mutant advanced non-small cell lung cancer treatment

"We believe zongertinib has the potential to transform the care of previously treated patients with HER2 (ERBB2)-mutant advanced non-small cell lung cancer and are hopeful about the continued research in other tumor types and lines of therapy," said Shashank Deshpande, Member of the Board of Managing Directors and Head of Human Pharma at Boehringer Ingelheim. "Priority Review illustrates the urgent need in this patient population and the possibility for zongertinib to be a groundbreaking innovation for patients with limited treatment options."

The application was based on results from the positive Phase Ib Beamion LUNG-1 trial. Data from Cohort 1 (N=75) of the study demonstrated an objective response rate (ORR) of 71% with six-month progression-free survival (PFS) and duration of response (DoR) rates of 69% and 73%, respectively, in patients with mutations in the HER2 tyrosine kinase domain.

Zongertinib had a safety profile with a low incidence of dose reductions (5%) and treatment discontinuations (3%). The majority of treatment-related adverse events (TRAEs) with zongertinib were mild in nature with diarrhea and rash being the most common all grade TRAEs, at 51% and 27% respectively. No new safety signals were observed. Grade 3 or higher TRAEs occurred in one patient treated with zongertinib. No treatment-related interstitial lung disease (ILD) cases were reported.

"Personalized medicine has revolutionized cancer treatment," said GO2 for Lung Cancer's Chief Scientific Officer, Courtney Granville. "Early screening and biomarker testing for mutations provide critical information to guide targeted therapies in personalized medicine. This filing acceptance represents a significant step toward offering another option for individuals with a HER2 (ERBB2) diagnosis, bringing hope and direction to cancer patients."

Zongertinib was previously granted Breakthrough Therapy Designation and Fast Track Designation by the FDA. The FDA's Breakthrough Therapy designation is intended to expedite the development and review of a medicine that is intended to treat a serious or life-threatening disease, and preliminary clinical evidence indicates the drug may demonstrate substantial improvement over available treatments. The FDA's Fast Track program is designed to facilitate the development and expedite the review of drugs to treat serious conditions and fill an unmet medical need. In addition to the FDA designations, Japan's Pharmaceuticals and Medical Devices Agency recently granted Orphan Drug Designation to zongertinib.

Zongertinib (also known as BI 1810631) is an investigational, irreversible tyrosine kinase inhibitor (TKI) that selectively inhibits HER2 (ERBB2) while sparing EGFR, thereby limiting associated toxicities. This orally administered, targeted treatment is being developed for HER2 (ERRB2)-mutant advanced non-small cell lung cancer (NSCLC) and additional clinical studies with zongertinib are ongoing in solid tumors with HER2 alterations.