- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00490100
Treatment for Growth Failure in Patients With X-Linked Severe Combined Immunodeficiency: Phase 2 Study of Insulin-Like Growth Factor-1
Treatment for Growth Failure in Patients With X-Linked Severe Combined Immunodeficiency (XSCID): A Phase 2 Study Assessing Safety and Clinical Response to Treatment With Insulin-like Growth Factor-1 (IGF-1)
This study will evaluate the safety and effectiveness of insulin-like growth factor-1 (IGF-1) to treat patients with X-linked severe combined immunodeficiency (XSCID). Those who have XSCID lack white blood cells that protect their bodies from invasion by all types of germs. IGF-1 is the main hormone responsible for the body's growth and metabolism. As a medication, IGF-1 is Increlex[(Trademark)] (mecasermin),
Patients ages 2 to 20 who have not yet begun puberty, have a diagnosis of XSCID, and are shorter than the 3rd percentile for their age may be eligible for this study. This study will last about 3 years, and patients' visits will be scheduled at 3-month intervals. Patients will have a physical history and exam, X-rays, electrocardiogram, blood tests, and body measurements.
Patients will take estradiol orally for 2 days, to help avoid false results of growth hormone (GH) levels in blood samples. Then provocation testing is done, with two tests back to back. It determines blood levels of GH and the body's response to testing with drugs called arginine and clonidine. Patients are admitted to the pediatric inpatient unit and will have an intravenous (IV) line placed in the arm. Arginine is given by IV over 30 minutes, and blood samples are taken. Right after arginine testing, the clonidine tablet is given. The IGF-1 generation test is then done to see if the body makes IGF-1 as a product in response to injections of GH for 5 consecutive days. This test does not require that patients are inpatients, but after Day 8, patients must be admitted to the pediatric unit to have blood sampling, start Increlex injections, and start close monitoring of blood sugar levels. They will learn how to do a self-injection and follow other advice. They will complete records about the injection site, symptoms, and side effects-keeping records for at least the first 2 days after going home, with each dose change, and as needed. Patients stick their fingertip and place a small drop of blood on a blood sugar monitoring strip. The strip is put into a glucometer-a small hand-held device to measure the blood sugar level. Patients will be instructed to always have a source of sugar available in case blood sugar is too low.
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Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
This is a Phase 2 protocol evaluating the safety and efficacy of standard dose insulin-like growth factor-1 (IGF-1) for the treatment of growth failure in patients diagnosed with X-linked severe combined immunodeficiency (XSCID). This condition is a fatal inherited immunodeficiency caused by defects in the common cytokine receptor gamma chain (gc), a subunit shared by many cytokine receptors. The common gamma subunit signals through the Janus kinase/signal transducers and activators of transcription (JAK/STAT) pathway, a complex intracellular signaling pathway used by many cytokines and growth factors, including growth hormone (GH). Studies have suggested that the gc defect may result in hyporesponsiveness to GH. This is supported by a report of GH hyporesponsiveness in an XSCID child that was successfully ameliorated following immune reconstitution using bone marrow transplantation (BMT). Haplo-identical BMTs for XSCID children often achieve only partial immune reconstitution, and many BMT recipients experience ongoing problems with growth failure, achieving heights well below 2 standard deviations for their chronological age. It is possible that in these partially corrected conditions, administration of IGF-1, a substance the body produces downstream in response to GH, may achieve an improved growth response.
This study proposes to evaluate the safety and efficacy of Increlex(Trademark) (recombinant human IGF-1) for the treatment of patients with XSCID who have growth failure (children with heights less than 3rd percentile for age). Increlex(Trademark) is a Food and Drug Administration-approved drug for treatment of growth hormone non-responsiveness in the general population of children with growth hormone hyporesponsiveness or primary IGF-1 deficiencies. The scientific objectives are to determine safety and to assess the efficacy of using subcutaneous IGF-1 in XSCID patients with growth failure. The long-term goal of this study is to establish improved treatment regimens for growth failure in children with XSCID.
Study Type
Enrollment (Actual)
Phase
- Phase 2
- Phase 1
Contacts and Locations
Study Locations
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Maryland
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Bethesda, Maryland, United States, 20892
- National Institutes of Health Clinical Center, 9000 Rockville Pike
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
- INCLUSION CRITERIA:
Participants Must:
- Have a diagnosis of XSCID
- Be between 2 years to 20 years old and have not completed puberty
- Consent to permit blood and/or tissue samples for storage
- Demonstrate short stature: height below the 3 rd percentile for chronological age
- Have a primary care physician at home
- Demonstrate growth failure, defined as growth velocity (measured as linear growth) that is less than 5% to 10% of that expected for children of the same age group, over the past 12 months
- Willingness to remain hospitalized for several days
- Provide evidence of serum IGF-1 level performed within the preceding 6 months and the results fall below normal limits for age
EXCLUSION CRITERIA:
Participants Must NOT:
- Have fusion of epiphyseal plates
- Demonstrate any history of anaphylactic reaction or hypersensitivity to mecasermin or any component of the drug's formulation
- Have any active or suspected neoplasia
- Demonstrate signs of intracranial hypertension as evidenced by papilledema upon examination by fundoscopy
- Have any condition that, in the investigator's opinion, places the patient at undue risk by participating in the study
- Be unwilling to undergo testing or procedures associated with this protocol
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: N/A
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Treatment
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Safety of Study Drug
Time Frame: 1 year
|
Rates of adverse events related to study drug
|
1 year
|
Change in Growth Rate on Study Drug
Time Frame: During intervention, up to 2 years
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Growth rate on intervention is compared with growth rate before intervention for each participant.
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During intervention, up to 2 years
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Collaborators and Investigators
Publications and helpful links
General Publications
- Buckley RH, Schiff RI, Schiff SE, Markert ML, Williams LW, Harville TO, Roberts JL, Puck JM. Human severe combined immunodeficiency: genetic, phenotypic, and functional diversity in one hundred eight infants. J Pediatr. 1997 Mar;130(3):378-87. doi: 10.1016/s0022-3476(97)70199-9.
- Puck JM, Pepper AE, Henthorn PS, Candotti F, Isakov J, Whitwam T, Conley ME, Fischer RE, Rosenblatt HM, Small TN, Buckley RH. Mutation analysis of IL2RG in human X-linked severe combined immunodeficiency. Blood. 1997 Mar 15;89(6):1968-77.
- Leonard WJ, Shores EW, Love PE. Role of the common cytokine receptor gamma chain in cytokine signaling and lymphoid development. Immunol Rev. 1995 Dec;148:97-114. doi: 10.1111/j.1600-065x.1995.tb00095.x.
Helpful Links
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
- Metabolic Diseases
- Immune System Diseases
- Infant, Newborn, Diseases
- Genetic Diseases, Inborn
- Genetic Diseases, X-Linked
- DNA Repair-Deficiency Disorders
- Primary Immunodeficiency Diseases
- Immunologic Deficiency Syndromes
- Failure to Thrive
- Severe Combined Immunodeficiency
- X-Linked Combined Immunodeficiency Diseases
- Physiological Effects of Drugs
- Growth Substances
- Mecasermin
Other Study ID Numbers
- 070171
- 07-I-0171
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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