JOURNAL ARTICLE
MULTICENTER STUDY
RANDOMIZED CONTROLLED TRIAL

[Phase III clinical study of zoledronic acid in the treatment of pain induced by bone metastasis from solid tumor or multiple myeloma]

Mei Dong, Feng-Yi Feng, Yang Zhang, Guang-Ru Xie, Ya-Jie Wang, Ji-Wei Liu, San-Tai Song, Qing-Hua Zhou, Jun Ren, Shun-Chang Jiao, Jin Li, Xiu-Wen Wang, Qiang Chen, Zhe-Hai Wang, Nong Xu, Ji-Feng Feng
Zhonghua Zhong Liu za Zhi [Chinese Journal of Oncology] 2008, 30 (3): 215-20
18756940

OBJECTIVE: To evaluate the efficacy and safety of zoledronic acid in the treatment of bone pain in patients with bone metastasis from solid tumor or multiple myeloma.

METHODS: A randomized, double-blind, double-simulated and multi-center phase III clinical trail with pamidronate as control was conducted. Patients with moderate to severe bone pain (VAS > 50 mm) induced by solid tumor or multiple myeloma were randomized to receive intravenous zoledronic acid 4 mg or pamidronate 90 mg. Then the change of VAS and urinary NTX/Cr and CTX/Cr were observed in two groups.

RESULTS: From July 2005 to September 2006, 228 patients with bone pain induced by bone metastasis from 15 cancer centers were randomize into two groups: 116 patients in zoledronic acid group and 112 patients in pamidronate group. The VAS value was decreased gradually after treatment in these two groups. Significant improvement in bone pain after treatment were observed both in zoledronic acid group and the control group when compared with baseline VAS on D8 (-11.77% vs. -10.87%), D15 (-24.60% vs. -21.06%) and D28 (-32.37% vs. -31.26%) (P< or =0.0001), but no significant difference existed between two groups (P =0.6587). Compared with baseline, urine NTX/Cr and CTX/Cr level were decreased rapidly after treatment in both groups, the nadir was on D8, the median decreased on D28, which was -36.9% vs. -32.1% for NTX/Cr (P = 0.7922) and -63.2% vs. -47.9% for CTX/Cr (P =0.834). The frequently observed adverse events were pyrexia (19.0% vs. 31.3%), vomiting (6.0% vs. 8.9%), nausea (4.3% vs. 4.5%), fatigue (3.4% vs. 2.7%) and constipation (2.6% vs. 1.8%) in the two groups. Compared with baseline, the serum creatinine level was not significantly increased throughout the study.

CONCLUSION: Intravenous injection of 4 mg zoledronic acid can significantly reduce bone pain and bone resorption marker in urine in the Chinese patients with bone metastasis from solid tumor or multiple myeloma, which is tolerable and also comparable to pamidronate in the efficacy and safety.

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