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Completed

NCT Number: NCT03038594

Growth Hormone Therapy for Muscle Regeneration in Severely Burned Patients

The investigators have previously demonstrated that burn injury causes severe muscle wasting, weight and height retardation, and systemic protein catabolism in pediatric and adult burned patients. The persistent loss of muscle impairs the quality of life of the burned patients, and it also delays autonomy and reintegration into the community. In 2009, the investigators showed that the daily injection of recombinant human growth hormone (GH) for nine months post discharge significantly increased height and weight, as well as lean body mass, in pediatric burned subjects. Our long-term goal is to improve the quality of life of burn patients by preventing height, weight, and muscle loss that may occur from severe protein catabolism. The objectives of this application are to a) attenuate height and weight in burned patients with the administration of GH, b) prevent or reverse loss of muscle and strength in these patients, and c) collect pilot data about cardiopulmonary parameters, scar assessments, and muscle metabolism. Our central hypothesis is that the administration of GH will restore depleted levels of growth hormone and will lead to prevention of lean body mass loss and bone mineral content, improve rehabilitation, and accelerate reintegration of severely burned patients. The investigators will administer either placebo or GH (daily subcutaneous injections of 0.05 mg/kg/day of GH [somatropin, Genotropin, Pfizer, New York, NY] to adult burn subjects (n=31 per group, 18-85 years, >30% total body surface burns) for nine months beginning one week prior to discharge. Both groups will be studied for a total of two years. The following aims will be tested: 1) determine the effects of GH supplementation on body composition, such as lean body mass loss, muscle strength, and exercise endurance; and 2) assess whether rehabilitation and subsequent reintegration of severely burned patients into society can be accelerated. Investigators will measure changes in lean body mass, muscle strength and exercise endurance during the acute hospital stay, discharge, and long-term follow-up visits (6, 12, 18, and 24 months after burn), as well as secondary endpoints such as cardiopulmonary variables, hypertrophic scar development, quality of life questionnaires, and concentrations of relevant hormones, cytokines, and oxidative stress markers.

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Key information

Age range

18 year–85 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 2 / Phase 3

Primary location

University of Texas Medical Branch

Galveston, Texas, 77550-1220, United States

About this study

Either recombinant human growth hormone (daily subcutaneous injections of 0.05 mg/kg/day of GH at discharge [somatropin, Genotropin, Pfizer, New York, NY]; 0.025 mg/kg/day of GH titrated the week before discharge) or placebo (n=31) will be administered to adult burned subjects (n= 31, 18-85 years) after screening and voluntary consent who have ≥30% TBSA assessed by either the Lund and Browder chart or the 'rule of nines' method during excisional surgery. It will be administered daily for 9 months beginning the week before discharge, and the primary and secondary endpoints will be collected during the acute hospital stay, discharge, and long-term follow-up visits (6, 12, 18, and 24 months after burn injury). Additionally, subjects will be contacted frequently [most likely 1 week, 1 month, and 2 months post discharge by telephone] to ensure that there are no adverse events or concerns with their study drug, as well as visit with them during their clinical visits that address their post-burn needs. All subjects will receive similar standard medical care and treatment from the time of emergency admission until their discharge.

Growth hormone will be used to potentially attenuate losses in height, weight, muscle and bone, reverse the oxidative stress of burn injury and, in the process, decrease the secondary consequences of burn injury, including organ dysfunction. This may improve the quality of life of the burn patient by preventing pathophysiology that may result from muscle and bone loss and may reduce hospital stay. Our research will lay the foundation for the future development of effective, safe, and economic therapeutic interventions to treat burn injury-associated metabolic abnormalities. Also, it will provide the basis for the development of supplemental regulations and pharmacotherapy to treat burn patients with GH. The risks are very reasonable in relation to the anticipated benefits to our subjects because a) GH at a higher dose has been tested in pediatric burned subjects with minor adverse events, and b) the subjects will be monitored consistently.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • 18-85 years old
  • Over 30% total body surface area burn
  • Provide consent and comprehend English or Spanish

Exclusion criteria

  • History of AIDS, AIDS-related complex, or HIV
  • History of or current hepatitis B or C
  • Pregnancy
  • History of or Active Malignancy
  • Insulin dependent diabetes mellitus type I prior to admission
  • Insulin dependent diabetes mellitus type II (up to 12 months prior to admission)
  • Other hyperglycemic disorders [not including transient post-burn/trauma hyperglycemia]
  • Current oral corticosteroid treatment
  • Currently participating in another interventional clinical trial at UTMB

Treatment and study plan

Somatropin

Drug

Other names: Genotropin, Growth Hormone (GH)

0.09% Saline Solution

Drug

Other names: Placebo, Control

Primary outcomes

  1. Lean body mass

    Time frame: At baseline

    Dual-Energy X-ray Absorptiometry (DEXA) measured in grams

  2. Lean body mass

    Time frame: 6 months post burn-injury

    Dual-Energy X-ray Absorptiometry (DEXA) measured in grams

  3. Lean body mass

    Time frame: 12 months post burn-injury

    Dual-Energy X-ray Absorptiometry (DEXA) measured in grams

  4. Lean body mass

    Time frame: 18 months post burn-injury

    Dual-Energy X-ray Absorptiometry (DEXA) measured in grams

  5. Lean body mass

    Time frame: 24 months post burn-injury

    Dual-Energy X-ray Absorptiometry (DEXA) measured in grams

Secondary outcomes

  1. Change in Muscle strength (peak torque)

    Time frame: Discharge (usually 30 days post burn) and 6, 12, 18, and 24 months after burn injury

    resistance testing muscle strength (assessed by Biodex isokinetic dynamometer)

  2. Change in Muscle strength ( total work)

    Time frame: Discharge (usually 30 days post burn) and 6, 12, 18, and 24 months after burn injury

    resistance testing muscle strength (Biodex isokinetic dynamometer)

  3. Change in Muscle strength (average power)

    Time frame: Discharge (usually 30 days post burn) and 6, 12, 18, and 24 months after burn injury

    resistance testing muscle strength (assessed by Biodex isokinetic dynamometer)

  4. Change in Muscle grip strength (maximum power)

    Time frame: Discharge (usually 30 days post burn) and 6, 12, 18, and 24 months after burn injury

    testing muscle strength (assessed by hand dynamometer)

  5. Change in Muscle endurance (maximum power)

    Time frame: Discharge (usually 30 days post burn) and 6, 12, 18, and 24 months after burn injury

    testing muscle endurance (assessed by Bruce treadmill test)

  6. Change in Resting energy expenditure (REE)

    Time frame: Discharge (usually 30 days post burn) and 6, 12, 18, and 24 months after burn injury

    Indirect calorimetry

  7. Change in resting heart rate

    Time frame: Discharge (usually 30 days post burn) and 6, 12, 18, and 24 months after burn injury

    electrocardiogram (EKG) readings

  8. Change in liver size

    Time frame: Discharge (usually 30 days post burn) and 6, 12, 18, and 24 months after burn injury

    Ultrasound readings

  9. Change in cardiac stroke volume

    Time frame: Discharge (usually 30 days post burn) and 6, 12, 18, and 24 months after burn injury

    echocardiogram readings

  10. Change in cardiac output

    Time frame: Discharge (usually 30 days post burn) and 6, 12, 18, and 24 months after burn injury

    Echocardiogram readings

  11. Change in respiratory quotient

    Time frame: Discharge (usually 30 days post burn) and 6, 12, 18, and 24 months after burn injury

    Indirect calorimetry

  12. Change in Total body fat

    Time frame: Discharge (usually 30 days post burn) and 6, 12, 18, and 24 months after burn injury

    Dual-Energy X-ray Absorptiometry (DEXA)

  13. Change in percentage of total body fat

    Time frame: Discharge (usually 30 days post burn) and 6, 12, 18, and 24 months after burn injury

    Dual-Energy X-ray Absorptiometry (DEXA)

  14. Change in bone mineral content

    Time frame: Discharge (usually 30 days post burn) and 6, 12, 18, and 24 months after burn injury

    Dual-Energy X-ray Absorptiometry (DEXA)

  15. Change in bone mineral density

    Time frame: Discharge (usually 30 days post burn) and 6, 12, 18, and 24 months after burn injury

    Dual-Energy X-ray Absorptiometry (DEXA)

  16. Change in Maximal oxygen consumption

    Time frame: Discharge (usually 30 days post burn) and 6, 12, 18, and 24 months after burn injury

    Six-minute walk test

  17. Change in respiratory fatigue

    Time frame: Discharge (usually 30 days post burn) and 6, 12, 18, and 24 months after burn injury

    Six-minute walk test

  18. Change in leg fatigue

    Time frame: Discharge (usually 30 days post burn) and 6, 12, 18, and 24 months after burn injury

    Six-minute walk test

  19. Change in Muscle protein synthesis rate

    Time frame: Discharge (usually 30 days post burn) and 6, 12, 18, and 24 months after burn injury

    Deuterium water

  20. Hypertrophic scar development

    Time frame: Discharge (usually 30 days post burn) and 6, 12, 18, and 24 months after burn injury

    Vancouver Scar Scale

  21. Change in Forced vital capacity (FVC)

    Time frame: Discharge (usually 30 days post burn) and 6, 12, 18, and 24 months after burn injury

    Pulmonary function test

  22. Change in forced expiratory volume in one second (FEV1)

    Time frame: Discharge (usually 30 days post burn) and 6, 12, 18, and 24 months after burn injury

    Pulmonary function test

  23. Change in forced expiratory flow rate between 27-75% of the FVC (FEF25-75)

    Time frame: Discharge (usually 30 days post burn) and 6, 12, 18, and 24 months after burn injury

    Pulmonary function test

  24. Change in FEV1/FVC ratio expressed as a percentage (FEV1/FVC%)

    Time frame: Discharge (usually 30 days post burn) and 6, 12, 18, and 24 months after burn injury

    Pulmonary function test

  25. Change in vital capacity (VC)

    Time frame: Discharge (usually 30 days post burn) and 6, 12, 18, and 24 months after burn injury

    Pulmonary function test

  26. Change in total lung capacity (TLC)

    Time frame: Discharge (usually 30 days post burn) and 6, 12, 18, and 24 months after burn injury

    Pulmonary function test

  27. Change in residual volume (RV)

    Time frame: Discharge (usually 30 days post burn) and 6, 12, 18, and 24 months after burn injury

    Pulmonary function test

  28. Change in functional residual capacity (FRC)

    Time frame: Discharge (usually 30 days post burn) and 6, 12, 18, and 24 months after burn injury

    Pulmonary function test

  29. Change in lung diffusion capacity (DLCO)

    Time frame: Discharge (usually 30 days post burn) and 6, 12, 18, and 24 months after burn injury

    Pulmonary function test

  30. Change in maximum voluntary ventilation (MVV)

    Time frame: Discharge (usually 30 days post burn) and 6, 12, 18, and 24 months after burn injury

    Pulmonary function test

  31. Change in peak expiratory flow (PEF)

    Time frame: Discharge (usually 30 days post burn) and 6, 12, 18, and 24 months after burn injury

    Pulmonary function test

  32. Change in Molecular biomarkers of oxidative and nitrosative stress (isoprostanes, asymmetric dimethylarginine)

    Time frame: Discharge (usually 30 days post burn) and 6, 12, 18, and 24 months after burn injury

    Urine analysis

  33. Changes in quality of life

    Time frame: Discharge (usually 30 days post burn) and 6, 12, 18, and 24 months after burn injury

    Questionnaires

Sponsors and collaborators

Lead sponsor

The University of Texas Medical Branch, Galveston

Other

Collaborators

  • Pfizer
  • United States Department of Defense

Registry information

Important dates

Study start
2015
Primary completion
2021
Study completion
2021
First posted
Jan 31, 2017
Registry last updated
Feb 13, 2023

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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