:: from the Institute
Clinical Trials
The Institute of Myology was established to fill
the needs of the AFM, of patients and their
families and to set up in public hospitals a
reference centre that includes medical
specialists, basic and clinical research teams
and education curriculum on muscles and their
pathologies. The AFM’s mission is to stimulate
innovative clinical research by helping conduct
clinical trials and by financing part, or all of
them. Each year the AFM launches a call for
proposals dedicated to the development of
therapeutics. This program may concern the
development of therapeutic products, or
preclinical and clinical trials. All projects
are evaluated by the Scientific Council. In
order to provide an impetus to clinical trials,
the AFM has created a service whose role is to
identify innovative scientific strategies,
stimulate and monitor projects. For example, as
a result of studying the potential of cell
therapy in FSHD, the AFM received several
preclinical research proposals in this fi eld.
The AFM’s role then consists in helping those
teams who wish to elaborate their projects
before they are submitted to the Scientific
Council during the call for proposals period.
The AFM is funding nearly 40 clinical trials
that are either in preparation or in progress,
including about twenty trials at the Institute
of Myology which concern both the natural
history of genetic muscular disease and
pharmacological, cell, gene and enzyme therapies
as well as effort retraining.
Besides the trials investigated directly by
teams from the Institute of Myology, the AFM or
Généthon, the technological and scientific
platform of the Institute is recognised by well-known
organisations (NIH; Genzyme) which have chosen
it for some of their trials.
Development of a French isometric strength
normative database
Loss of muscle strength is one of the key
features in diseases such as amyotrophic lateral
sclerosis (ALS) and Duchenne muscular dystrophy
(DMD) and accurate evaluation of muscle strength
is crucially important. In this article, Dr.
Jean-Yves Hogrel from the Institute of Myology
and his colleagues describe the development of a
normative database for isometric strength
measured by quantitative muscle testing (QMT)
for a French adult population. The study
included 315 healthy men and women from four
clinical centres treating patients with
neuromuscular disorders. Strength measurements
for 14 muscle functions (13 bilaterally and neck
flexion) were performed. In 86% of patients, the
right side was dominant and significantly
stronger (P<0.05) for all muscle functions
except hip flexion and extension, knee flexion
and shoulder internal rotation. A predicted
strength value for each muscle group could be
computed for a patient of any age, sex and
height. Compared to published normative data
from the U.S. population, with the exception of
hip extension, significantly lower values were
observed in the French population. The
predictive values deduced from the French
regression models were also lower than the
American predictive values. This database will
allow objective evaluation of patients with
respect to these normative data, assessment of
the degree of their neuromuscular deterioration
and collection of information on the clinical
course of the disease. Furthermore, composite
scores can be estimated in therapeutic trials to
follow a global index of strength.
Arch Phys Med Rehabil. 2007 Oct;88(10):1289-97.
:: international
Redefining the clinical spectrum associated with
dystroglycanopathy genes
Defects in glycosylation of alpha-dystroglycan
are associated with several forms of muscular
dystrophy, often characterized by congenital
onset and severe structural brain involvement,
collectively known as dystroglycanopathies. Six
causative genes have been identified in these
disorders: POMT1; POMT2; POMGnT1; fukutin, FKRP
and LARGE. The increased availability of
mutation analysis in patients with a
dystroglycanopathy has consequently led to the
discovery of a range of phenotypes resulting
from mutations in FKRP. However, there is no
data concerning the frequency of involvement or
the genotype-phenotype relationships for the
other five genes in a large and unbiased
population. In this study, the authors have
systematically screened a large population of 92
unrelated individuals with a dystroglycanopathy
phenotype for mutations in POMT1; POMT2;
POMGnT1; fukutin and LARGE genes. Mutations were
observed in 34% of these patients. Mutations in
the FKRP gene had previously b een excluded.
Mutations in POMGnT1 and fukutin were associated
with a wider than reported spectrum of clinical
severity. The majority of patients with POMT1
and POMT2 mutations have evidence of central
nervous system involvement. Only one patient
presented a mutation in the LARGE gene. In
decreasing order of prevalence, mutations in the
glycosyltransferase genes were as follows:
POMT2; POMT1; POMGnT1; fukutin and LARGE. The
data presented in this paper increase the
clinical spectrum of disorders associated with
mutations in the known glycosyltransferase genes.
Identification of six novel POMGnT1 mutations
Muscle-eye-brain disease (MEB; OMIM 253280) was
first described in 1977 in Finland, where it is
enriched because of founder effect and genetic
isolation. MEB is now known to occur throughout
the world, but Finland remains the country with
the largest group of MEB patients. It is an
autosomal recessive disorder characterized by
congenital muscular dystrophy, brain
malformation and ocular abnormalities. MEB is
caused by mutations in the protein O-linked
mannose ß1,2-N-acetylglucosaminyltransferase 1
(POMGnT1) gene. To date, 28 different POMGnT1
mutations have been identified with a diverse
clinical spectrum. In this paper, Dr. Ute Hehr
and her colleagues describe the clinical,
neuroradiological and molecular genetic findings
in nine MEB patients from eight independent
families of various ethnic origins. The authors
aimed to further characterize the spectrum of
identified human POMGnT1 mutations and to
investigate a possible genotype-phenotype
correlation. The age at the ti me of clinical
examination varied between 3 months and 16 years.
Psychomotor and mental development indicated
moderate to severe global retardation. At birth,
all patients presented a severe muscular
hypotonia with distinctly elevated CK values.
Ophthalmologic findings revealed a wide array of
abnormalities in all patients, resulting in
severe visual impairment, the most frequent
being sever myopia. Out of five cases, prenatal
ultrasound data revealed a hydrocephalus in four
patients. The most prominent and consistent
feature observed on cerebral MR images was
marked alterations of the white matter,
including hypoplasia of the brainstem with a
characteristic flattening and kinking of the
pons. Hydrocephalic changes of varying degree
and thinning of the corpus callosum were also
observed in this patient cohort. Concerning
molecular genetic findings, three previously
reported and six novel POMGnT1 mutations were
identified. The combined data from this study
allowed the authors to conclude that there is no
genotype-phenotype correlation for POMGnT1-confirmed
MEB patients and that additional environmental
and/or genetic factors may contribute to the
observed clinical variability of POMGnT1-associated
phenotypes.
US non-profit formed to further gene therapy for
orphan diseases
Asklepios BioPharmaceutical, Inc., (
AskBio)
has announced the creation of the Chapel Hill
Project, a non-profit organisation created to
further development of cell and gene therapies
for orphan diseases. Askbio will provide the
Chapel Hill Project with access to its
Biological NanoParticle (BNP) and Self-Complementary
Vector technologies with no up-front cost. The
Chapel Hill Project will make this technology
available to researchers for use in developing
novel treatments for orphan disease indications.
The Chapel Hill Project hopes to eventually
serve as a depository for intellectual property
that can be used for the development of cell and
gene therapies for orphan diseases with other
companies contributing the use of their DNA-based
technologies in order to speed the advancement
of orphan disease therape utics to the market.
Recombinant adeno-associated virus (rAAV) has
become a successful gene-delivery vector for a
multitude of targets due to its "non-pathogenic
properties and absent immune response, ability
to maintain efficient and long-term expression,
and ease of genetic manipulation". AskBio has
developed a library of rAAV Biological Nano
Particles.
Online report : T Voit at the WMS congress
The 12th International Congress of the World
Muscle Society (WMS), was held in Giardini Naxos
in Sicily from 17 to 20 October.
The congress was dedicated to three groups of
neuromuscular diseases: metabolic myopathies,
congenital muscular dystrophies and congenital
myopathies. As usual, the final day was devoted
to therapeutic approaches. Thomas Voit,
Scientific Director of the Institute of Myology
and member of the WMS programme, shares his
impressions of the event.
As a member of the
WMS programme committee, were you fully
satisfied with the congress, in terms of the
organisation or scientifically?
I wouldn’t say that I was 100%
satisfied but that’s related to my character. On
the whole, the congress went very well,
especially given the number of participants.
There was a particular problem during the poster
session, which was inconvenienced by the
excessive number of both people and posters.
Next year, we will improve or at least change
the way posters are presented. This is part of
the various changes that we would like to
implement next year so that the WMS congress
regains its more intimate character and thereby
stimulates collaboration.
>>> Access all our online reports
Latest research highlights
Discover our selection of scientific and medical
publications in the fields of myology and
neuromuscular diseases: a summary of each
publication aimed at the general reader,
highlighting the main points of the article and
the authors’ conclusions is provided.
- A clinically relevant gene therapy approach
for Duchenne muscular dystrophy by vascular
delivery of micro-dystrophin -
Read
- Oxidative damage and the pathogenesis of
heart failure in mdx mice -
Read
- Dystrophin levels as low as 30% are
sufficient to avoid muscular dystrophy in the
human -
Read
- Identification of six novel POMGnT1
mutations -
Read
- Redefining the clinical spectrum associated
with dystroglycanopathy genes -
Read
- Safety and Efficacy of Carvedilol Therapy -
Read
- Development of therapy against muscular
dystrophy by myostatin inhibition -
Read
- Mice with haploinsufficiency of utrophin
develop more severe skeletal muscle inflammation
and fibrosis than mdx mice -
Read
- Reduced muscle fibrosis in scid/mdx mice
correlates with low expression of TGF-b1 -
Read
- Long-term effect of perindopril treatment on
mortality in Duchenne muscular dystrophy -
Read
- Novel aspects of the phenotypic spectrum of
dysferlinopathies -
Read
- Development of a mechanical assistive device
that restores some function in children with
muscular disabilities -
Read
- 15th Annual
Meeting International Alliance of ALS/MND
Associations - Nov 27-Dec 3 2007 and
18th International symposium ALS/MND - Dec 1-3
2007
Toronto, Canada
The Symposium is planned as two parallel
meetings, one on biomedical science and the
other on research and advances in the care and
management of people affected by ALS/MND. Joint
sessions consider issues of mutual concern,
challenging current views and practice.
- 3rd Myores
congress
Dec 17-20 2007 - Venice, Italy
This year's MYORES Congress will be combined
with the mid-term review. As you can see in the
(preliminary) program, the first 1,5 days (Monday,
December 17th and Tuesday, December 18th) are
only for MYORES members and are not open for the
public. The lab-heads should come with one
student/postdoc (who is working on the most
important MYORES-project) and the person who is
responsable for the platform.
- 2nd
International conference on trends in cellular
and molecular biology
Jan 5-7 2008, New Delhi, India
Cell and molecular Biology have made tremendous
strides over time. Inputs from physical
scientists especially in the area of structural
biology has added a great deal of information to
our knowledge base of interrelationship between
structure and function. Structure can be
manipulated to modulate a function or create a
new function. In today's post genomic era
proteomes are well analysed thanks to the advent
of several kinds of mass spectrometers. However,
in spite of these advances we have only partial
understanding of complex processes like cell
growth, cell cycle, cell proliferation, cell
differentiation inter- and intra-cellular
trafficking and apoptosis. The International
Congress on Cellular and Molecular Biology will
focus on life processes that are least
understood.
Contact: Professor Baishnab C Tripathy, School
of Life Sciences, Jawaharlal Nehru University,
New Delhi 110067, India.
Email: baishnabtripathy(a)yahoo.com
- 1st
International Symposium on Human Embryonic Stem
Cell Research
Jan 31-Feb 2 - Genocentre, Evry, France
Scientists from around the world will gather to
exchange ideas about cutting-edge research on
the human embryonic stem cells. With a lineup of
29 fascinating Lectures from selected
specialists, including dedicated sessions for
industrial applications of human ES cells and
presentation of scientific networks supported by
the European Commission, FISH-ESC 2008 is an
opportunity for learning and professional
development not to be missed.
- 4th Annual
Update Symposium Series on Clinical Neurology
and Neurophysiology
Feb 18-19 2008, Tel Aviv, Israel
The symposium will include sessions on:
The peripheral nervous system, neuroimmunology,
aging, neurodegenerative diseases and dementia.
Hands-on' workshops such as the interpretation
of laboratory tests in neurological disease will
also take place.
>>> Access the complete list of upcoming conferences
and meetings.
Recent publications from the Institute
- Israeli D, Ziaei S, Gjata B, Benchaouir R,
Rameau P, Marais T, Fukada S, Segawa M, Yamamoto
H, Gonin P, Danos O, Garcia L.
Expression of mdr1 is required for efficient
long term regeneration of dystrophic muscle.
Exp Cell Res. 2007 Jul 1;313(11):2438-50.
- Muchir A, Pavlidis P, Bonne G, Hayashi YK,
Worman HJ.
Activation of MAPK in hearts of EMD null mice:
similarities between mouse models of X-linked
and autosomal dominant Emery Dreifuss muscular
dystrophy.
Hum Mol Genet. 2007 Aug 1;16(15):1884-95.
- Parzy E, Fromes Y, Thiaudiere E, Carlier PG.
Refinement of cardiac NMR imaging in awake
hamsters: proof of feasibility and
characterization of cardiomyopathy.
NMR Biomed. 2007 Oct;20(6):615-23.
- Hogrel JY, Payan CA, Ollivier G, Tanant V,
Attarian S, Couillandre A, Dupeyron A, Lacomblez
L, Doppler V, Meininger V, Tranchant C, Pouget
J, Desnuelle C.
Development of a French isometric strength
normative database for adults using quantitative
muscle testing.
Arch Phys Med Rehabil. 2007 Oct;88(10):1289-97.
- Yanagisawa A, Bouchet C, Van den Bergh PY,
Cuisset JM, Viollet L, Leturcq F, Romero NB,
Quijano-Roy S, Fardeau M, Seta N, Guicheney P.
New POMT2 mutations causing congenital muscular
dystrophy: identification of a founder mutation.
Neurology. 2007 Sep 18;69(12):1254-60.
- Boerio D, Hogrel JY, Bassez G, Lefaucheur JP.
Neuromuscular excitability properties in
myotonic dystrophy type 1.
Clin Neurophysiol. 2007 Nov;118(11):2375-82.

Press Release
10/10/2007 - Trophos starts phase Ib
clinical trial of TRO19622 in Spinal muscular
atrophy
Trophos SA, a biopharmaceutical company
specializing in the discovery and development of
drugs for neurological disorders, announced that
the company has begun enrolling Spinal Muscular
Atrophy (SMA) patients in a Phase Ib clinical
trial of its lead product, TRO19622. The
clinical trial will involve 20 type 1b-3 SMA
patients aged between 6-25 years of age and will
assess the pharmacokinetics and safety of drug
product after administration of single and
multiple doses, once-daily, by the oral route.
The study is being conducted at three centres in
France.
The clinical program in SMA is supported by the
Association Française contre les Myopathies (
AFM),
through a strategic partnership begun in 2000.
Thanks to Téléthon donations, over the last 7
years Trophos has received decisive financial
support from the AFM for this project. Now,
barely four years after the identification of a
candidate molecule, a clinical trial in hum ans
is underway. This again shows how a patient
association can play a leading role in promoting
drug development.
Books
- Adult Neurogenesis
Edited by Fred H. Gage
The idea that the adult brain of mammals can
generate new neurons has only recently been
accepted by the scientific community, and
research in this exciting area is now in full
swing. Bringing together leading researchers in
the field of adult neurogenesis, the 30 chapters
in this monograph provide a valuable overview of
this emerging field and lay the groundwork for
future studies. Adult Neurogenesis includes
discussions on neural stem cell biology; methods
and models for studying adult neurogenesis;
physiological and molecular processes and their
control; related neurological diseases; and
comparisons of neurogenesis in humans, birds,
fish, and invertebrates. It will be of interest
to all researchers in neurobiology as well as
those in the medical field, as it has
implications for understanding depression,
epilepsy, and other psychiatric disorders.
- Molecular Biology of Aging
Edited By Leonard P. Guarente
Research into the causes of aging, and
strategies to delay that process, have gained
much ground and attention in recent years. This
volume covers the major threads in the molecular
genetics of aging, including genes that regulate
aging, causes of aging, evolutionary theories of
aging, and the relationship between diet and
aging. Among specific topics covered are calorie
restriction, mitochondria, sirtuins, telomeres,
stem cells, and cancer. Each chapter is written
by one or more leaders in the field, and the
book presents the current status of this
exciting research area and provides an
invaluable source of information in a single
volume.
> Molecular Biology of Aging
Recruitment
Post-doctoral Researcher
Department of Human Genetics, based at the
Leiden University Medical Centre, Leiden, The
Netherlands
The Department of Human Genetics is looking for
a post-doctoral researcher for its team
investigating new therapeutic strategies for
patients with Duchenne muscular dystrophy.