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KMID : 1120320200060010008
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Osteoporosis and Sarcopenia
2020 Volume.6 No. 1 p.8 ~ p.14
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Effects of treatment interruption due to patient convenience on treatment of once a week teriparatide
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Katahira Genichiro
Akiba Kotaro
Takada Junichi
Iba Kousuke
Yamashita Toshihiko
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Abstract
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Objectives: Once-weekly teriparatide (W-TPTD) is an effective drug for patients with osteoporosis; however, some patients discontinue W-TPTD owing to its adverse drug reactions (ADRs). Sequential treatment with W-TPTD and antiresorptive therapy may be effective in treating such patients. In this study, we evaluate the efficacy of this sequential treatment regimen.
Methods: This retrospective study was conducted at a single institution in Japan. The target subjects were patients with osteoporosis who started W-TPTD treatment. The subjects who received W-TPTD for 6 months or more were divided into 3 groups: TTT (W-TPTD for 18 months); TBT (sequential treatment of W-TPTD/bisphosphonates/W-TPTD; each for 6 months); and TET (sequential treatment of W-TPTD/elcatonin/W-TPTD, each for 6 months) groups. The efficacy endpoints were bone mineral densities (BMD) in the lumbar spine and femur.
Results: Lumbar spine BMD in group TBT increased significantly by 1.6% (P = 0.023), 2.9% (P = 0.001), and 4.4% (P < 0.001) after 6, 12, and 18 months, respectively, compared with baseline values. In group TET, it increased by 2.1%, (P = 0.001), 1.3% (P = 0.066), and 3.0% (P = 0.015) after 6, 12, and 18 months, respectively. A significant increase was observed only after 6 and 18 months. In group TTT, it increased significantly by 3.3% (P = 0.023), 5.1% (P = 0.019), and 7.1% (P = 0.010) after 6, 12, and 18 months, respectively. However, no significant difference in total hip BMD was observed among all three groups. No serious ADRs were reported.
Conclusion: In patients who discontinue treatment with W-TPTD due to ADRs, sequential treatment with W-TPTD and antiresorptive therapy would be beneficial.
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KEYWORD
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Osteoporosis, Once-weekly teriparatide, Bone mineral density, Sequential treatment, Hip structural analysis
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