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Region Hovedstaden - en del af Københavns Universitetshospital
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Bimagrumab vs Optimized Standard of Care for Treatment of Sarcopenia in Community-Dwelling Older Adults: A Randomized Clinical Trial

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  • Daniel Rooks
  • Therese Swan
  • Budhaditya Goswami
  • Lee Anne Filosa
  • Ola Bunte
  • Nicolas Panchaud
  • Laura A Coleman
  • Ram R Miller
  • Elisa Garcia Garayoa
  • Jens Praestgaard
  • Robert G Perry
  • Chris Recknor
  • Charles M Fogarty
  • Hidenori Arai
  • Liang-Kung Chen
  • Jun Hashimoto
  • Yoon-Sok Chung
  • John Vissing
  • Didier Laurent
  • Olivier Petricoul
  • Sarah Hemsley
  • Estelle Lach-Trifilieff
  • Dimitris A Papanicolaou
  • Ronenn Roubenoff
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Importance: The potential benefit of novel skeletal muscle anabolic agents to improve physical function in people with sarcopenia and other muscle wasting diseases is unknown.

Objective: To confirm the safety and efficacy of bimagrumab plus the new standard of care on skeletal muscle mass, strength, and physical function compared with standard of care alone in community-dwelling older adults with sarcopenia.

Design, Setting, and Participants: This double-blind, placebo-controlled, randomized clinical trial was conducted at 38 sites in 13 countries among community-dwelling men and women aged 70 years and older meeting gait speed and skeletal muscle criteria for sarcopenia. The study was conducted from December 2014 to June 2018, and analyses were conducted from August to November 2018.

Interventions: Bimagrumab 700 mg or placebo monthly for 6 months with adequate diet and home-based exercise.

Main Outcomes and Measures: The primary outcome was the change in Short Physical Performance Battery (SPPB) score after 24 weeks of treatment. Secondary outcomes included 6-minute walk distance, usual gait speed, handgrip strength, lean body mass, fat body mass, and standard safety parameters.

Results: A total of 180 participants were recruited, with 113 randomized to bimagrumab and 67 randomized to placebo. Among these, 159 participants (88.3%; mean [SD] age, 79.1 [5.3] years; 109 [60.6%] women) completed the study. The mean SPPB score increased by a mean of 1.34 (95% CI, 0.90 to 1.77) with bimagrumab vs 1.03 (95% CI, 0.53 to 1.52) with placebo (P = .13); 6-minute walk distance increased by a mean of 24.60 (95% CI, 7.65 to 41.56) m with bimagrumab vs 14.30 (95% CI, -4.64 to 33.23) m with placebo (P = .16); and gait speed increased by a mean of 0.14 (95% CI, 0.09 to 0.18) m/s with bimagrumab vs 0.11 (95% CI, 0.05 to 0.16) m/s with placebo (P = .16). Bimagrumab was safe and well-tolerated and increased lean body mass by 7% (95% CI, 6% to 8%) vs 1% (95% CI, 0% to 2%) with placebo, resulting in difference of 6% (95% CI, 4% to 7%) (P < .001).

Conclusions and Relevance: This randomized clinical trial found no significant difference between participants treated with bimagrumab vs placebo among older adults with sarcopenia who had 6 months of adequate nutrition and light exercise, with physical function improving in both groups. Bimagrumab treatment was safe, well-tolerated, increased lean body mass, and decreased fat body mass. The effects of sarcopenia, an increasing cause of disability in older adults, can be reduced with proper diet and exercise.

Trial Registration: ClinicalTrials.gov Identifier: NCT02333331; EudraCT number: 2014-003482-25.

OriginalsprogEngelsk
TidsskriftJAMA network open
Vol/bind3
Udgave nummer10
Sider (fra-til)e2020836
ISSN2574-3805
DOI
StatusUdgivet - 1 okt. 2020

ID: 61071805