The Food and Drug Administration has approved neratinib (NERLYNX) in combination with capecitabine for use in adults with advanced or metastatic HER2-positive breast cancer who have received at least two prior anti-HER2 based regimens in the metastatic setting.
The recommended dose for neratinib in this population is 240 mg once daily with food on days 1-21 of a 21-day cycle. Neratinib should be given with capecitabine at 750 mg/m2 twice daily on days 1-14 until progression or unacceptable toxicity.
The full prescribing information for neratinib is available from the FDA website.
The FDA’s new approval of neratinib is based on results from the NALA trial (NCT01808573). The trial enrolled 621 patients with metastatic HER2-positive breast cancer who had received at least two prior anti-HER2 based regimens in the metastatic setting.
The patients were randomized to neratinib plus capecitabine or lapatinib plus capecitabine and received treatment until progression or unacceptable toxicity.
The objective response rate was 32.8% in the neratinib arm and 26.7% in the lapatinib arm. The median duration of response was 8.5 months and 5.6 months, respectively.
The median progression-free survival was 5.6 months in the neratinib arm and 5.5 months in the lapatinib arm (hazard ratio 0.76; P = .0059). The median overall survival was 21 months and 18.7 months, respectively (HR 0.88; P = .2086).
The most common grade 3/4 adverse events in the neratinib arm were diarrhea, nausea, vomiting, fatigue, and decreased appetite.