Spectrum: Positive Data for Poziotinib in Lung Cancer

 Spectrum Pharmaceuticals (NasdaqGS: SPPI), a biopharmaceutical company focused on novel and targeted oncology therapies, today announced the presentation of safety and efficacy results from Cohort 4 of the ZENITH20 clinical trial. This data is from 70 first-line patients with non-small lung cancer (NSCLC) with HER2 exon 20 insertion mutations who received 16 mg daily, given as 16 mg once daily (48 patients) or 8 mg twice daily (22 patients) of oral poziotinib. These results showed a confirmed objective response rate (ORR) of 41% (95% CI:30%-54%), as evaluated centrally by an independent image review committee using RECIST 1.1 criteria. The evaluable patient population showed an ORR of 50%. The study met its primary endpoint as the observed lower bound of 30% exceeded the pre-specified lower bound of 20%. The safety profile was consistent with the TKI class. The data is part of an oral presentation at the European Society for Medical Oncology Targeted Anticancer Therapies (ESMO TAT) Congress 2022 being held virtually March 7-8, 2022.

"Cohort 4 from our ZENITH 20 study demonstrated positive results for treatment naïve lung cancer patients harboring HER2 Exon 20 insertion mutations. There is currently no approved treatment for NSCLC patients with these mutations," said Francois Lebel, M.D., Chief Medical Officer of Spectrum. "We are encouraged by these findings and look forward to further discussions with the FDA on the regulatory path forward."

The presentation is available on the Spectrum Pharmaceuticals website at: https://investor.sppirx.com/index.php/events-and-presentations.

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