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Efficacy and safety of 188Re-HEDP in lung cancer patients with bone metastases: a randomized, multicenter,
Ping Chen1,2, Jun Li1, Jicong Gui1
1Department of Nuclear Medicine, Huashan Hospital, Fudan University, Jing'an District, No.12 Urumchi Middle Road, Shanghai, 200040, China.
Purpose:
To investigate the pain-relieving effect and safety of three different doses of 188Re-hydroxyethylidine diphosphonate (HEDP) in patients with lung cancer and bone metastases.
Methods:
For this randomised, phase 2 and multicenter trial, we enrolled patients with lung carcinoma and multifocal bone metastases and excluded patients who had received bisphosphonates or external-beam radiotherapy within the previous 4 weeks. Fifty-four patients were randomized to receive a single injection of 188Re-HEDP, at doses of 30, 40 or 50 MBq/kg (interval, 12 weeks). Patients were followed-up by assessment of numerical rating scale (NRS) score, global quality of life (QOL) score and adverse events (AEs). ANOVA analysis, Chi-Squared test and LSD-t test were used in this study.
Results:
Significantly decreased NRS scores relative to baseline were observed in 40 MBq/kg group (Week 0 vs. Week 12: 6.0 ± 1.4 vs. 4.8 ± 2.5, P = 0.033) and 50 MBq/kg group (Week 0 vs. Week 12: 5.5 ± 1.5 vs. 4.5 ± 2.9, P = 0.046). Significant change of global QOL score from baseline was observed in 40 MBq/kg group at week 8 (global QOL score: P = 0.024, pain score: P = 0.041) and 50 MBq/kg group (pain score: P = 0.021) at week 12. No patients withdrew trial because of AEs in three groups.
Conclusions:
188Re-HEDP at dose of 40 and 50 MBq/kg was generally effective to alleviate pain and improve QOL in lung cancer patients with painful bone metastases. 188Re-HEDP was safe and well-tolerated.
