NCT07036003

Brief Summary

The goal of this clinical trial is to see if people with knee osteoarthritis would be willing to comply and adhere to incorporating Recombinant Human Growth Hormone (rHGH), specifically Saizen Somatropin solution, into their treatment plan. Participants will be asked to:

  • Self-inject the treatment solution (placebo or somatropin) into the abdominal or gluteal area once per day for a total of 6 weeks.
  • Complete questionnaires related to their knee pain and activities of daily living.
  • Provide blood tests.
  • Complete various measurements including: circumference of thigh, calf, and abdomen; strength of thigh and knee; range of motion of both knees; and gait analysis.

Trial Health

77
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
34

participants targeted

Target at P50-P75 for phase_1

Timeline
33mo left

Started Oct 2025

Typical duration for phase_1

Geographic Reach
1 country

1 active site

Status
recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Progress16%
Oct 2025Jan 2029

First Submitted

Initial submission to the registry

May 30, 2025

Completed
26 days until next milestone

First Posted

Study publicly available on registry

June 25, 2025

Completed
4 months until next milestone

Study Start

First participant enrolled

October 31, 2025

Completed
2.7 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

July 1, 2028

Expected
6 months until next milestone

Study Completion

Last participant's last visit for all outcomes

January 1, 2029

Last Updated

March 16, 2026

Status Verified

December 1, 2025

Enrollment Period

2.7 years

First QC Date

May 30, 2025

Last Update Submit

March 12, 2026

Conditions

Keywords

Recombinant Human Growth HormonerHGHSaizenKnee OsteoarthritisKnee OA

Outcome Measures

Primary Outcomes (1)

  • Feasibility of the medication administration

    Participant adheres to self-administration of injections once daily for 6 weeks.

    6 weeks after treatment begins.

Secondary Outcomes (13)

  • Clinical Outcomes: knee extension strength

    At 6 weeks and 24 months time points after enrolment

  • Clinical Outcome: knee flexion strength

    At 24 months after enrolment.

  • Clinical Outcomes: thigh muscle strength

    At baseline, 6 weeks, 3 months, 6 months, 12 months, and 24 months study visits.

  • Clinical Outcomes: Kinematic Gait Analysis

    At baseline, 6 weeks and 6 months study visits.

  • Thigh circumference

    At baseline, 6 weeks, 3, 6, 12 and 24 months study visits

  • +8 more secondary outcomes

Study Arms (2)

Recombinant Human Growth Hormone (rHGH)

EXPERIMENTAL

Self-administered subcutaneous injection into the abdomen or gluteal region once per day for six weeks.

Drug: Somatropin (recombinant human growth hormone)

Bacteriostatic Saline

PLACEBO COMPARATOR

Self-administered subcutaneous injection into the abdomen or gluteal region once per day for six weeks.

Drug: bacteriostatic saline placebo

Interventions

Study participants will deliver bacteriostatic saline via self-administered subcutaneous injection into the abdomen or gluteal region once per day for six weeks in an identical delivery device to the experimental arm.

Bacteriostatic Saline

Study participants will deliver Somatropin via self-administered subcutaneous injection into the abdomen or gluteal region once per day for six weeks at a dose of 0.5mg/day per body surface area (0.5mg/m2/day).

Recombinant Human Growth Hormone (rHGH)

Eligibility Criteria

Age18 Years - 65 Years
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Between 18 - 65 years old.
  • Diagnosis of isolated knee osteoarthritis for greater than 6 months.

You may not qualify if:

  • Previous or pending major intra-articular or reconstructive surgery to the involved knee, including femoral/tibial osteotomies, ligament repair/reconstruction, or cartilage transplantation. Patients with remote (\>1 year) diagnostic arthroscopy, arthroscopic debridement, meniscectomy, or meniscal repair may be allowed to participate at the investigators' discretion.
  • Previous major trauma (including fracture, dislocation, open injury) to the involved knee, or ipsilateral hip, knee, ankle, or hip. Patients with prior complete ligament tears will be excluded, patients with chronic partial thickness ligament tears or degenerative/complex meniscal tears (\>6 months from injury) may be included at the investigators' discretion
  • Recent (less than 6 months) intra-articular injection into the involved knee.
  • High grade ligamentous knee injury.
  • Known allergy to recombinant human growth hormone (rHGH) or reconstitutive solutions.
  • BMI of less than 20 or greater than 35.
  • Documented history of growth disorder of bones or connective tissue, type 1 or 2 diabetes, myopathy, cancer, endocrine disorder, severe hypertension (SBP \> 180) or rheumatologic disorder.
  • Pregnant or breastfeeding, or actively attempting to get pregnant.
  • Currently on hypoglycemic therapy, oral estrogen or glucocorticoid replacement therapy.
  • Would have difficulty with the self-injection schedule or other cognitive/ functional limitations.
  • Have taken creatine within 7 days before baseline. Potential participants will be given the option to pause their supplements and then re-screen if they are interested in the study,
  • Have taken anabolic steroids within 42 days (6 weeks) before baseline. Potential participants will be given the option to pause their supplements and then rescreen if they are interested in the study,
  • Vital signs or routine bloodwork outside of normal range.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Sunnybrook Health Sciences Centre

Toronto, Ontario, M4N 3M5, Canada

RECRUITING

Related Publications (36)

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Related Links

MeSH Terms

Conditions

Osteoarthritis, Knee

Interventions

Human Growth HormoneGrowth Hormone

Condition Hierarchy (Ancestors)

OsteoarthritisArthritisJoint DiseasesMusculoskeletal DiseasesRheumatic Diseases

Intervention Hierarchy (Ancestors)

Pituitary Hormones, AnteriorPituitary HormonesPeptide HormonesHormonesHormones, Hormone Substitutes, and Hormone AntagonistsPeptidesAmino Acids, Peptides, and Proteins

Study Officials

  • Dr. David Wasserstein

    Sunnybrook Health Sciences Centre

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Study Design

Study Type
interventional
Phase
phase 1
Allocation
RANDOMIZED
Masking
TRIPLE
Who Masked
PARTICIPANT, INVESTIGATOR, OUTCOMES ASSESSOR
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR INVESTIGATOR
PI Title
Assistant Professor - University of Toronto; Associate Scientist - Sunnybrook Research Institute

Study Record Dates

First Submitted

May 30, 2025

First Posted

June 25, 2025

Study Start

October 31, 2025

Primary Completion (Estimated)

July 1, 2028

Study Completion (Estimated)

January 1, 2029

Last Updated

March 16, 2026

Record last verified: 2025-12

Data Sharing

IPD Sharing
Will share

Data Sharing Statement: All data relevant to the study will be included in the final study manuscript or uploaded as supplementary information. Individual participant data that underlie the results reported in this article, after deidentification (text, tables, figures, and appendices).

Shared Documents
STUDY PROTOCOL, SAP, ANALYTIC CODE
Time Frame
Beginning 3 months and ending 5 years following article publication.
Access Criteria
Researchers who provide a methodologically sound proposal will be able to access the IPD and supporting information to achieve aims in the approved proposal. Proposals should be directed to david.wasserstein@sunnybrook.ca. To gain access, data requestors will need to sign a data access agreement.

Locations