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An Exploratory Study of NST001 for the Prevention of Immobilizing Muscle Atrophy

The Effect of NST001 (HYA) on Preventing Muscle Atrophy Due to Postoperative Immobilization in Individuals with Articular Cartilage Injury of the Knee: A Single-Center, Double-Blind, Placebo-Controlled, Exploratory Study - HYAMUSE Study

Status
Recruiting
Phases
Phase 2
Study type
Interventional
Source
JPRN
Registry ID
JPRN-jRCT2051230197
Enrollment
20
Registered
2024-03-11
Start date
2024-05-13
Completion date
Unknown
Last updated
2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Osteochondritis dissecans or articular cartilage injury of the knee Osteochondral autograft transfer or autologous chondrocyte implantation

Interventions

NST001 should be taken orally at 1,200 mg twice a day (before breakfast and dinner) for 6 weeks with an appropriate amount of water (about 100~200 mL).

Sponsors

Hirota Yushi
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Individuals who are 18 years of age or older at the time of obtaining consent 2. Individuals who are going to receive osteochondral autograft transfer or autologous chondrocyte implantation for osteochondritis dissecans or articular cartilage injury of the knee 3. Individuals who require postoperative immobilization of the knee using knee brace for a week 4. Individuals who can be hospitalized for a month 5. Individuals who have obtained written consent to participate in the study

Exclusion criteria

Exclusion criteria: 1. Individuals with severe hepatic impairment (AST or ALT more than 4 times the upper limit of the reference value) 2. Individuals with severe renal impairment (eGFR less than 30 mL/min/1.73 m2) 3. Cancer-bearing individuals 4. Individuals who are taking steroids orally or intravenously at the time of obtaining consent 5. Individuals who have taken metformin, alfa glucosidase inhibitors, H2 blockers, proton pump inhibitors (PPIs), oral antimicrobials, intestinal preparations (bifidobacterium preparations, lactic acid bacteria preparations or butyric acid bacteria preparations), and HYA within 2 months prior to obtaining consent. 6. Individuals with inflammatory bowel disease (ulcerative colitis, Crohn's disease, etc.) or individuals with a history of gastrointestinal (stomach, duodenum, small intestine, large intestine, etc.) resection 7. Individuals with MRI contraindications (e.g., individuals with non-MRI medical devices, claustrophobic individuals)* *: For details, refer to the hospital regulations of the clinical trial site. 8. Pregnant women and individuals who may be pregnant, or who are breastfeeding 9. Individuals who have participated in other clinical trials, interventional or invasive clinical studies within 3 months prior to obtaining consent 10. Other individuals who are judged to be inappropriate by the investigator or co-investigator of this study

Design outcomes

Primary

MeasureTime frame
The ratio of the change in cross-sectional area of triceps between pre-surgery and 4 weeks after surgery

Secondary

MeasureTime frame
1) The ratio of the change in cross-sectional area of triceps among pre-surgery, 1week and 4 weeks after surgery 2) The cross-sectional area of triceps 1 week after surgery 3) The cross-sectional area of triceps 4 weeks after surgery 4) The ratio of the change in fat percentage of triceps among pre-surgery, 1week and 4 weeks after surgery 5) The fat percentage of triceps 1 week after surgery 6) The fat percentage of triceps 4 weeks after surgery 7) The ratio of the change in cross-sectional area of lower leg muscle mass among pre-surgery, 1week and 4 weeks after surgery 8) The cross-sectional area of lower leg muscle mass 1 week after surgery 9) The cross-sectional area of lower leg muscle mass 4 weeks after surgery

Contacts

Public ContactShuichiro Saito

Kobe University Hospital

saito@med.kobe-u.ac.jp+81-78-382-5861

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026