Transplantation of Myoblasts to Duchenne Muscular Dystrophy (DMD) Patients

Study Description

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Brief Summary:

This Phase I/II of the clinical trial is to investigate whether the transplantation of normal myoblasts throughout one muscle (the extensor carpi radialis) of the patients is safe and will improve the strength of that muscle. During this Phase I/II, the patients will be transplanted with myoblasts grown from the muscle biopsy of a donor and kept frozen in liquid nitrogen. Thirty million myoblasts will be injected per cm cube in a progressively higher surface of the radialis (i.e., 3, 6 and 9 cm2). The contralateral muscle will be injected with saline to serve as a control. The strength of both muscles will be measured at 3 months post transplantation to verify whether the myoblast transplantation improved the strength of the muscle. If there is no significant strength improvement, the protocol will be terminated immediately for that patient. If there is a significant strength improvement, the patient will be maintained under immunosuppression until 6 months post transplant and his strength will be re-evaluated.

Condition or disease	Intervention/treatment	Phase
Duchenne Muscular Dystrophy	Biological: Myoblast transplantation; Procedure: Saline injection	Phase 1; Phase 2

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Study Design

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Study Type :	Interventional (Clinical Trial)
Estimated Enrollment :	10 participants
Allocation:	Randomized
Intervention Model:	Single Group Assignment
Masking:	Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
Primary Purpose:	Treatment
Official Title:	Transplantation of Myoblasts to Duchenne Muscular Dystrophy (DMD) Patients
Study Start Date :	May 2014
Estimated Primary Completion Date :	January 2019
Estimated Study Completion Date :	February 2019

Arms and Interventions

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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.	Biological: Myoblast transplantation; 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.	Procedure: Saline injection; 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).

Outcome Measures

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Primary Outcome Measures :

1. Number of Participants with Serious and Non-Serious Adverse Events as a measure of safety. [ Time Frame: Up to 6 months ]
   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.

Secondary Outcome Measures :

1. Percentage of dystrophin-positive fibers in a muscle biopsy 3 or 6 months after myoblast transplantation. [ Time Frame: 6 months after the myoblast transplantation ]
   The presence of dystrophin positive fibers will be assessed in a muscle biopsy done 6 months after the myoblast transplantation.
2. Strength of the Extensor carpi radialis muscles. [ Time Frame: At 3 and 6 months after myoblast transplantation. ]
   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.
3. Presence of a cellular and humoral reaction against the donor antigens [ Time Frame: Every 4 weeks after transplantation for 6 months ]
   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).

Eligibility Criteria

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Ages Eligible for Study:	16 Years and older (Child, Adult, Older Adult)
Sexes Eligible for Study:	Male
Accepts Healthy Volunteers:	No

Criteria

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.

Contacts and Locations

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Contacts

Contact: Craig Campbell, MD MSc FRCPC	(519) 685-8332	craig.campbell@lhsc.on.ca
Contact: Jacques Tremblay, PhD	(418)-525-4444 ext 47307	Jacques-P.Tremblay@crchul.ulaval.ca

Locations

Canada, Ontario
Children's Hospital London Health Sciences Centre	Recruiting
London, Ontario, Canada, N6A 4G5
Canada
Centre de recherche du CHU de Quebec - CHUL	Recruiting
Quebec, Canada, G1V 4G2

Sponsors and Collaborators

CHU de Quebec-Universite Laval

Investigators

Principal Investigator:	Craig Campbell, MD MSc FRCPC	University of Western Ontario, Canada
Principal Investigator:	Jack Puymirat, MD	Centre de recherche du CHU de Quebec

More Information

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Publications:

Skuk D, Goulet M, Roy B, Piette V, Côté 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. Epub 2006 Dec 4.

Skuk D, Goulet M, Roy B, Chapdelaine P, Bouchard JP, Roy R, Dugré FJ, Sylvain M, Lachance JG, Deschênes 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.

Skuk D, Vilquin JT, Tremblay JP. Experimental and therapeutic approaches to muscular dystrophies. Curr Opin Neurol. 2002 Oct;15(5):563-9. Review.

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.

Responsible Party:	CHU de Quebec-Universite Laval
ClinicalTrials.gov Identifier:	NCT02196467 History of Changes
Other Study ID Numbers:	SIRUL 104501; 299825 ( Other Grant/Funding Number: CIHR/IRSC )
First Posted:	July 22, 2014
Last Update Posted:	July 25, 2018
Last Verified:	July 2018
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD:	Yes
Plan Description:	The clinical trial results that have a relation to its objectives will be published as scientific papers in scientific journals or presented at scientific meetings, but without revealing the identity of the participants who will always remain anonymous.
Time Frame:	The data will begin to be available as of the fall of 2019, not being decided yet for how long.
Access Criteria:	Information to be shared will be the expression of dystrophin, changes in strength, and evidence or not of rejection, in the muscles injected, as well as the side effects observed.

Keywords provided by CHU de Quebec-Universite Laval:

myoblast; transplantation; strength; tacrolimus; immunosuppression

Additional relevant MeSH terms:

Muscular Dystrophies; Muscular Dystrophy, Duchenne; Muscular Disorders, Atrophic; Muscular Diseases; Musculoskeletal Diseases	Neuromuscular Diseases; Nervous System Diseases; Genetic Diseases, Inborn; Genetic Diseases, X-Linked