- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT02196467
Transplantation of Myoblasts to Duchenne Muscular Dystrophy (DMD) Patients
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Duchenne Muscular Dystrophy (DMD) is a degenerative disease of genetic origin, due to a mutation in the gene coding for the protein dystrophin. This mutation leads to deficiency of dystrophin in the myofibers, causing progressive muscle degeneration by the following mechanism: (1) dystrophin deficiency leads to myofibers being very vulnerable to muscle contraction-relaxation, causing frequent damage and necrosis of myofibers; (2) necrosis is followed by myofiber regeneration, as long as the regenerative capacity of muscle is not exhausted; (3) when the regenerative capacity of the muscle is exhausted, myofibers become atrophic and are ultimately lost; (4) fibrosis and fat infiltration replace the lost myofibers. This progressive muscle destruction takes place in most muscles of the limbs and trunk, leading to progressive loss of muscle strength, musculotendinous contractures, restrictive respiratory insufficiency and premature death between 17 and 30 years.
The transplantation of myoblasts obtained from a healthy donor is a potential treatment of DMD. Following intramuscular injection, donor myoblasts fuse with the myofibers of the patient, introducing the normal dystrophin gene in them. In a previous Phase 1A clinical trial, the investigators proved that transplantation of myoblasts grown from the muscle biopsy of a healthy donor introduced the normal dystrophin gene in the DMD myofibers, with the consequent expression of the normal dystrophin mRNA and restoration of the dystrophin protein in several myofibers.
The aim of this Phase I/II of the clinical trial is to investigate whether the transplantation of normal myoblasts throughout one muscle (in this case, the extensor carpi radialis) of DMD patients is safe and will improve the strength of that muscle. The patients will be transplanted with myoblasts grown from the muscle biopsy of a healthy donor. Thirty million myoblasts will be injected per cm cube in a progressively higher volume of muscle (i.e., 3, 6 and 9 cm cube). The contralateral muscle will be injected with saline as a control. The patients and the investigators will be blind to the side injected with cells. The strength of both muscles will be measured at 3 months post transplant to verify if myoblast transplantation increased muscle strength. If there is no significant strength increase, the protocol will be terminated immediately for that patient. If there is a significant strength increase, the patient will be maintained under immunosuppression until 6 months and the muscle strength will be re-evaluated.
The objectives of this Phase I/II clinical trial with DMD patients are thus:
Primary objective:
To evaluate the safety of a procedure of high-density injections of donor myoblasts throughout a muscle (under immunosuppression by tacrolimus).
Secondary objectives:
- To evaluate whether myoblast transplantation resulted in the presence of dystrophin-positive myofibers of donor origin.
To evaluate whether myoblast transplantation improved the muscle strength or prevent or slowed down the progression of the muscle weakness as shown by the following parameters:
2.1) Increase of the voluntary strength of the subject's wrist extension done by the extensor carpi radialis 12 or 24 weeks after myoblast transplantation compared with the pre-transplant values of the same muscle.
2.2) Reduction of the fatigue of the voluntary strength of the subject's wrist extension done by the extensor carpi radialis 12 or 24 weeks after myoblast transplantation compared with the pre-transplant fatigue values of the same muscle.
2.3) Reduce the progression of the muscle weakness in the myoblast injected muscle compared with the control contralateral muscle.
- To verify the long term effectiveness of the tacrolimus immunosuppression to control acute rejection in myoblast transplantation (by examining the presence of muscle fibers expressing normal dystrophin and the absence of specific immune responses)
Study Type
Enrollment (Anticipated)
Phase
- Phase 2
- Phase 1
Contacts and Locations
Study Contact
- Name: Craig Campbell, MD MSc FRCPC
- Phone Number: (519) 685-8332
- Email: craig.campbell@lhsc.on.ca
Study Contact Backup
- Name: Jacques Tremblay, PhD
- Phone Number: 47307 (418)-525-4444
- Email: Jacques-P.Tremblay@crchul.ulaval.ca
Study Locations
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-
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Quebec, Canada, G1V 4G2
- Recruiting
- Centre de recherche du CHU de Quebec - CHUL
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Ontario
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London, Ontario, Canada, N6A 4G5
- Recruiting
- Children's Hospital London Health Sciences Centre
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- A clinical diagnosis of DMD must be confirmed (i.e., with supporting confirmation demonstrated by the identification of a mutation in the dystrophin gene compatible with DMD or presence of less than 10% dystrophin positive fibers in a muscle biopsy in a subject with DMD).
- The subject has to be older than 16 years of age.
- Male
- If on corticosteroids, a stable dose must be maintained for 6 months prior to myoblast transplantation and throughout the trial
- A potential haplotype compatible donor (the father, the mother, a brother or sister who is more than 18 years old) should be available.
- The subject must be able to move both wrists, with an MRC scale score of greater than or equal to 2.
- Subject must have been vaccinated for pneumococcus and Haemophilus influenzae.
- For subjects who are sexually active, willingness to abstain from sexual intercourse or employ a barrier or medical method of contraception for the duration of the study.
- For subjects that need assisted ventilation, a stable regimen of non-invasive ventilation parameters for 3 months prior to the first myoblast transplantation and anticipation that they will be on a stable regimen throughout the study.
- Written informed consent of the subject and donor.
Exclusion Criteria:
- An abnormal sensory examination
- Persisting abnormal values in a hemogram (red blood cells, white blood cells, hemoglobin or platelets out of laboratory normal range).
- A history of chronic infection.
- Abnormal glycosylated hemoglobin level and/or fasting blood glucose (values out of laboratory normal range)
- Previous neoplasia.
- Previous tuberculosis or potential carrier of latent tuberculosis.
- Any clinically significant cardiac, endocrine, hematologic, hepatic, immunologic, metabolic, urologic, pulmonary, neurologic, dermatologic, psychiatric, renal, and/or other major disease as determined by the Investigator that is not related to DMD
- Previous history of renal problems or laboratory analyses suggestive of a renal problem (cystatin C, blood urea nitrogen, electrolytes out of laboratory normal range).
- Previous biopsies or intramuscular injections in any of the extensor carpi radialis.
- Subject who participated to phase 1A of myoblast transplantation
- The subject uses a drug that is not compatible with tacrolimus (see section 6 "Concomitant medications" of protocol) within the last month. If the subject has previously used one of these drugs, the washout period before the onset of tacrolimus should be at least 1 month.
- Subject tests positive for HIV-1, HIV-2, antigen HIV-1, HBC (hepatitis B surface antigen (HBsAg) and hepatitis B core antigen) HCV, HTLV-1 and anti-HTLV-2.
- The subject was submitted to electromyography in the extensor carpi radialis, within the last 6 months.
- There are pre-existing antibodies in the subject serum against the donor lymphocytes.
- Any change (initiation, dose adjustment, interruption or discontinuation) in any medication that may affect muscle function (eg. Losartan, coenzyme Q10, green tea extract, idebenone, creatine, nutritional supplements, etc.) within 3 months of the first myoblast transplantation.
- Any change in cardiac medications (ACE inhibitor, beta-blocker, etc.) within 3 months of first myoblast transplantation.
- Any surgery or fracture of the upper extremity within 3 months prior to first myoblast transplantation or plans to have surgery during the course of the trial.
- No haplotype compatible donor is available.
- Unwillingness or inability of the subject to understand and comply with the requirements of this protocol in the opinion of the Investigator or sponsor.
- Previous tuberculosis or potential carrier of latent tuberculosis.
- Previous treatment with any other investigational product within 6 months of myoblast transplantation.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: TREATMENT
- Allocation: RANDOMIZED
- Interventional Model: SINGLE_GROUP
- Masking: QUADRUPLE
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
EXPERIMENTAL: Myoblast transplantation & strength
30 million myoblasts will be transplanted per centimeter cube in the Extensor carpi radialis of one of the patient's forearms, resuspended in saline.
The strength will be evaluated after 3 and 6 months and the presence of dystrophin after 3 or 6 months.
|
30 million myoblasts will be transplanted per centimeter cube in the Extensor carpi radialis of one of the patient's forearm, resuspended in saline (a total of 0.5 ml of suspension per centimetre cube of muscle).
|
SHAM_COMPARATOR: Saline injection & strength
The same saline solution used in the previous arm, but without cells, will be injected similarly per centimeter cube in the Extensor carpi radialis of the contralateral patient's forearm.
The strength will be evaluated after 3 and 6 months and the presence of dystrophin after 3 or 6 months.
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A saline solution (the same used to resuspend de myoblasts in the first intervention) will be injected similarly in the Extensor carpi radialis of the contralateral patient's forearm (a total of 0.5 ml of saline per centimetre cube of muscle).
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Number of Participants with Serious and Non-Serious Adverse Events as a measure of safety.
Time Frame: Up to 6 months
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The patients will be monitored for local and systemic potential adverse effects due to the transplantation and for adverse effects associated with immunosuppression with tacrolimus.
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Up to 6 months
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Percentage of dystrophin-positive fibers in a muscle biopsy 3 or 6 months after myoblast transplantation.
Time Frame: 6 months after the myoblast transplantation
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The presence of dystrophin positive fibers will be assessed in a muscle biopsy done 6 months after the myoblast transplantation.
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6 months after the myoblast transplantation
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Strength of the Extensor carpi radialis muscles.
Time Frame: At 3 and 6 months after myoblast transplantation.
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The strength of both Extensor carpi radialis will be evaluated 3 and 6 months after the myoblast transplantation to evaluate whether this transplantation improved the muscle strength, prevented or slowed down the progression of the muscle weakness.
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At 3 and 6 months after myoblast transplantation.
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Presence of a cellular and humoral reaction against the donor antigens
Time Frame: Every 4 weeks after transplantation for 6 months
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To assess antibody-mediated immune responses, a blood sample will be obtained at days D-14 and D15, at week 4 and every 4 weeks until the end of the treatment schedule according to the transplant pattern of the subject, and at the 3 and 6 month follow ups.
These blood samples will be used to make cross-matches to determine whether the subject is producing antibodies reacting with the donor myoblasts.
The antibodies against donor myoblasts will be detected by flow cytometry.
Antibodies against donor HLA class I and II antigens will also be assessed by flow cytometry using single HLA antigen-coated beads (Flow PRA beads, One Lambda, Canoga Park, CA).
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Every 4 weeks after transplantation for 6 months
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Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Craig Campbell, MD MSc FRCPC, University of Western Ontario, Canada
- Principal Investigator: Jack Puymirat, MD, Centre de recherche du CHU de Québec
Publications and helpful links
General Publications
- Skuk D, Goulet M, Roy B, Piette V, Cote CH, Chapdelaine P, Hogrel JY, Paradis M, Bouchard JP, Sylvain M, Lachance JG, Tremblay JP. First test of a "high-density injection" protocol for myogenic cell transplantation throughout large volumes of muscles in a Duchenne muscular dystrophy patient: eighteen months follow-up. Neuromuscul Disord. 2007 Jan;17(1):38-46. doi: 10.1016/j.nmd.2006.10.003. Epub 2006 Dec 4.
- Skuk D, Goulet M, Roy B, Chapdelaine P, Bouchard JP, Roy R, Dugre FJ, Sylvain M, Lachance JG, Deschenes L, Senay H, Tremblay JP. Dystrophin expression in muscles of duchenne muscular dystrophy patients after high-density injections of normal myogenic cells. J Neuropathol Exp Neurol. 2006 Apr;65(4):371-86. doi: 10.1097/01.jnen.0000218443.45782.81.
- Skuk D, Vilquin JT, Tremblay JP. Experimental and therapeutic approaches to muscular dystrophies. Curr Opin Neurol. 2002 Oct;15(5):563-9. doi: 10.1097/00019052-200210000-00007.
- Hogrel JY, Zagnoli F, Canal A, Fraysse B, Bouchard JP, Skuk D, Fardeau M, Tremblay JP. Assessment of a symptomatic Duchenne muscular dystrophy carrier 20 years after myoblast transplantation from her asymptomatic identical twin sister. Neuromuscul Disord. 2013 Jul;23(7):575-9. doi: 10.1016/j.nmd.2013.04.007. Epub 2013 May 31.
Study record dates
Study Major Dates
Study Start
Primary Completion (ANTICIPATED)
Study Completion (ANTICIPATED)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (ESTIMATE)
Study Record Updates
Last Update Posted (ACTUAL)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- SIRUL 104501
- 299825 (OTHER_GRANT: CIHR/IRSC)
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
IPD Plan Description
IPD Sharing Time Frame
IPD Sharing Access Criteria
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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