A new active vitamin D, ED-71, increases bone mass in osteoporotic patients under vitamin D supplementation: A randomized, double-blind, placebo-controlled clinical trial

Toshio Matsumoto, Takami Miki, Hiroshi Hagino, Toshitsugu Sugimoto, Sumiaki Okamoto, Takako Hirota, Yusuke Tanigawara, Yasufumi Hayashi, Masao Fukunaga, Masataka Shiraki, Toshitaka Nakamura

Research output: Contribution to journalArticle

111 Citations (Scopus)


Context: ED-71 has been shown to increase lumbar bone mineral density (BMD) in osteoporotic subjects. However, vitamin D insufficiency might have influenced the effect of ED-71 on BMD. Objective: Our objective was to examine whether ED-71 can increase BMD in osteoporotic patients under vitamin D supplementation. Design, Setting, and Patients: We conducted a randomized, double-blind, placebo-controlled clinical trial of 219 osteoporotic patients (49-87 yr of age). Interventions: Subjects were randomly assigned to receive placebo or 0.5, 0.75, or 1.0 μg/d ED-71 for 12 months. All the subjects received 200 or 400 IU/d vitamin D3. Main outcome measures: We assessed changes in lumbar and hip BMD and bone turnover markers from baseline. Results: Lumbar BMD increased with ED-71 treatment for 12 months (2.2, 2.6, and 3.1% from baseline and 2.9, 3.4, and 3.8% vs. placebo group in subjects receiving 0.5, 0.75, and 1.0 μg ED-71, respectively). Total hip BMD also increased with 0.75 and 1.0 μg ED-71 (-0.8, 0.6, and 0.9% from baseline and 0.1, 1.5, and 1.8% vs. placebo group in the 0.5, 0.75, and 1.0 μg ED-71 groups, respectively). Bone formation and resorption markers were suppressed by approximately 20% after 12 months of 0.75 and 1.0 μg ED-71 treatment. Transient hypercalcemia over 2.6 mmol/liter occurred in 7, 5, and 23% of subjects in the 0.5, 0.75, and 1.0 μg ED-71 groups, respectively, but none of them developed sustained hypercalcemia. Conclusions: These results demonstrate that ED-71 treatment at around 0.75 μg/d can effectively and safely increase lumbar and hip BMD in osteoporotic patients with vitamin D supplementation.

Original languageEnglish
Pages (from-to)5031-5036
Number of pages6
JournalJournal of Clinical Endocrinology and Metabolism
Issue number9
Publication statusPublished - 2005 Sep 1


ASJC Scopus subject areas

  • Endocrinology, Diabetes and Metabolism
  • Biochemistry
  • Endocrinology
  • Clinical Biochemistry
  • Biochemistry, medical

Cite this