To the Editor We read the results of the Optimize-2 trial by Hortobagyi et al1 with keen interest. After 9 or more doses of monthly zoledronic acid or pamidronate, 416 women with breast cancer with bone metastases were randomized to receive zoledronic acid once every 4 weeks (4W) or zoledronic acid once every 12 weeks (12W) for 1 year. The results showed that the 12W zoledronic acid was noninferior to 4W zoledronic acid dosing.
Charles L. Shapiro, Andrew L. Himelstein. Zoledronic Acid Dosing in Patients With Metastatic Breast Cancer. JAMA Oncol. Published online November 30, 2017. doi:10.1001/jamaoncol.2017.0789