PMID- 36476479 OWN - NLM STAT- MEDLINE DCOM- 20221222 LR - 20221222 IS - 1478-6362 (Electronic) IS - 1478-6354 (Print) IS - 1478-6354 (Linking) VI - 24 IP - 1 DP - 2022 Dec 7 TI - Inhibition of bone erosion, determined by high-resolution peripheral quantitative computed tomography (HR-pQCT), in rheumatoid arthritis patients receiving a conventional synthetic disease-modifying anti-rheumatic drug (csDMARD) plus denosumab vs csDMARD therapy alone: an open-label, randomized, parallel-group study. PG - 264 LID - 10.1186/s13075-022-02957-w [doi] LID - 264 AB - BACKGROUND: This exploratory study compared the inhibition of bone erosion progression in rheumatoid arthritis (RA) patients treated with a conventional synthetic disease-modifying anti-rheumatic drug (csDMARD) plus denosumab versus csDMARD therapy alone and investigated the effects of denosumab on bone micro-architecture and other bone-related parameters using high-resolution peripheral quantitative computed tomography (HR-pQCT). METHODS: In this open-label, randomized, parallel-group study, patients with RA undergoing treatment with a csDMARD were randomly assigned (1:1) to continue csDMARD therapy alone or to continue csDMARDs with denosumab (60-mg subcutaneous injection once every 6 months) for 12 months. The primary endpoint was the change from baseline in the depth of bone erosion, measured by HR-pQCT, in the second and third metacarpal heads at 6 months after starting treatment. Exploratory endpoints were also evaluated, and adverse events (AEs) were monitored for safety. RESULTS: In total, 46 patients were enrolled, and 43 were included in the full analysis set (csDMARDs plus denosumab, N = 21; csDMARD therapy alone, N = 22). Most patients were female (88.4%), and the mean age was 65.3 years. The adjusted mean (95% confidence interval) change from baseline in the depth of bone erosion, measured by HR-pQCT, in the 2-3 metacarpal heads at 6 months was - 0.57 mm (- 1.52, 0.39 mm) in the csDMARDs plus denosumab group vs - 0.22 mm (- 0.97, 0.53 mm) in the csDMARD therapy alone group (between-group difference: - 0.35 mm [- 1.00, 0.31]; P = 0.2716). Similar results were shown for the adjusted mean between-group difference in the width and volume of bone erosion of the 2-3 metacarpal heads. Significant improvements in bone micro-architecture parameters were shown. The incidence of AEs and serious AEs was similar between the csDMARDs plus denosumab and the csDMARD therapy alone groups (AEs: 52.2% vs 56.5%; serious AEs: 4.3% vs 8.7%). CONCLUSIONS: Although the addition of denosumab to csDMARDs did not find statistically significant improvements in bone erosion after 6 months of treatment, numerical improvements in these parameters suggest that the addition of denosumab to csDMARDs may be effective in inhibiting the progression of bone erosion and improving bone micro-architecture. TRIAL REGISTRATION: University Hospital Medical Information Network Clinical Trials Registry, UMIN000030575. Japan Registry for Clinical Trials, jRCTs071180018. CI - (c) 2022. The Author(s). FAU - Iwamoto, Naoki AU - Iwamoto N AD - Department of Immunology and Rheumatology, Division of Advanced Preventive Medical Sciences, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan. naoki-iwa@nagasaki-u.ac.jp. FAU - Chiba, Ko AU - Chiba K AD - Department of Orthopedic Surgery, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan. FAU - Sato, Shuntaro AU - Sato S AD - Clinical Research Center, Nagasaki University Hospital, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan. FAU - Shiraishi, Kazuteru AU - Shiraishi K AD - Department of Orthopedic Surgery, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan. FAU - Watanabe, Kounosuke AU - Watanabe K AD - Department of Orthopedic Surgery, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan. FAU - Oki, Nozomi AU - Oki N AD - Department of Radiological Sciences, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan. FAU - Okada, Akitomo AU - Okada A AD - Department of Rheumatology, National Hospital Organization Nagasaki Medical Center, 2-1001-1 Kubara, Omura, Nagasaki, 856-8562, Japan. FAU - Koga, Tomohiro AU - Koga T AD - Department of Immunology and Rheumatology, Division of Advanced Preventive Medical Sciences, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan. FAU - Kawashiri, Shin-Ya AU - Kawashiri SY AD - Department of Immunology and Rheumatology, Division of Advanced Preventive Medical Sciences, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan. AD - Departments of Community Medicine, Division of Advanced Preventive Medical Sciences, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan. FAU - Tamai, Mami AU - Tamai M AD - Department of Immunology and Rheumatology, Division of Advanced Preventive Medical Sciences, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan. FAU - Hosogaya, Naoki AU - Hosogaya N AD - Clinical Research Center, Nagasaki University Hospital, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan. FAU - Furuyama, Masako AU - Furuyama M AD - Department of Rheumatology, Nagasaki Kita Hospital, 800 Motomurago, Nishisonogigun Togitsucho, Nagasaki, 851-2103, Japan. FAU - Kobayashi, Makiko AU - Kobayashi M AD - Primary Medical Science Department, Medical Affairs Division, Daiichi Sankyo Co., Ltd, 3-5-1 Nihonbashi-Honcho, Chuo-ku, Tokyo, 103-8426, Japan. FAU - Saito, Kengo AU - Saito K AD - Primary Medical Science Department, Medical Affairs Division, Daiichi Sankyo Co., Ltd, 3-5-1 Nihonbashi-Honcho, Chuo-ku, Tokyo, 103-8426, Japan. FAU - Okubo, Naoki AU - Okubo N AD - Data Intelligence Department, Digital Transformation Management Division, Daiichi Sankyo Co., Ltd, 1-2-58, Hiromachi, Shinagawa-ku, Tokyo, 140-8710, Japan. FAU - Uetani, Masataka AU - Uetani M AD - Department of Radiological Sciences, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan. FAU - Osaki, Makoto AU - Osaki M AD - Department of Orthopedic Surgery, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan. FAU - Kawakami, Atsushi AU - Kawakami A AD - Department of Immunology and Rheumatology, Division of Advanced Preventive Medical Sciences, Nagasaki University Graduate School of Biomedical Sciences, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan. LA - eng PT - Journal Article PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't DEP - 20221207 PL - England TA - Arthritis Res Ther JT - Arthritis research & therapy JID - 101154438 RN - 0 (Antirheumatic Agents) SB - IM MH - Aged MH - Female MH - Humans MH - Male MH - *Antirheumatic Agents/therapeutic use MH - *Arthritis, Rheumatoid/diagnostic imaging/drug therapy MH - Japan MH - Tomography PMC - PMC9727996 OTO - NOTNLM OT - Bone erosion OT - Denosumab OT - HR-pQCT OT - Rheumatoid arthritis OT - csDMARDs COIS- Naoki Iwamoto and Atsushi Kawakami have received speaker's bureau fees and grant/research support from Daiichi Sankyo Co., Ltd. Ko Chiba has received speaker's bureau fees from Daiichi Sankyo Co., Ltd. Shuntaro Sato, Kazuteru Shiraishi, Kounosuke Watanabe, Nozomi Oki, Akitomo Okada, Tomohiro Koga, Shin-ya Kawashiri, Mami Tamai, Naoki Hosogaya, and Masako Furuyama declare that they have no competing interests. Makiko Kobayashi was an employee of Daiichi Sankyo Co., Ltd., during the conduct of this study. Kengo Saito and Naoki Okubo are employees of Daiichi Sankyo Co., Ltd. Masataka Uetani and Makoto Osaki have received lecture fees from Daiichi Sankyo Co., Ltd. EDAT- 2022/12/09 06:00 MHDA- 2022/12/15 06:00 PMCR- 2022/12/07 CRDT- 2022/12/08 10:28 PHST- 2022/06/29 00:00 [received] PHST- 2022/11/20 00:00 [accepted] PHST- 2022/12/08 10:28 [entrez] PHST- 2022/12/09 06:00 [pubmed] PHST- 2022/12/15 06:00 [medline] PHST- 2022/12/07 00:00 [pmc-release] AID - 10.1186/s13075-022-02957-w [pii] AID - 2957 [pii] AID - 10.1186/s13075-022-02957-w [doi] PST - epublish SO - Arthritis Res Ther. 2022 Dec 7;24(1):264. doi: 10.1186/s13075-022-02957-w.