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Dear Friends,
It is time to bring you up-to-date on our
Center and overall ALS research activity.
The 18th International ALS/MND
Symposium took place in Toronto in early
December 2007. The meeting had one of
the largest delegations, more than 800
people from all over the world, and one of
the largest numbers of presentations. In
particular, poster presentations have
increased not only in numbers but also
drastically in quality in the past few years.
Throughout the Symposium, I had a clear
sense that basic and clinical research in
ALS is progressing steadily, but at the same
time, I had a feeling that we must have
more studies that could fill in the right
pieces of this complex jigsaw puzzle that is
the mysterious ALS.
One day before this International
Symposium began, the World Federation of
Neurology ALS Committee held a special
symposium on Recent Progress in Genetic
Studies in ALS. The last few years, an
enormous effort has been made to collect
DNA samples from the patients in the USA
and throughout the world as well. As the
first elected chair of the ALS Research
Group, we made a unique effort to collect
DNA (joint effort of the National Institute
of Neurological Diseases and Stroke, MDA
and ALS Association, along with nearly 70
ALS Centers in the USA), resulting in 2000
patient DNAs and 2000 DNAs from
healthy controls. Independently, MDA
researchers collected several hundred
DNAs including controls. Similar efforts
have been made in the UK and Europe. As
the results of these DNA samples, a
number of innovative genome-wise
association studies (looking for a clue of
single nucleotide polymorphism, SNP,
abnormal genes
associated with ALS) were
carried out independently
by at least 4 sites (NIH,
MDA, European, and UK
studies). Those results were published in
leading medical journals last year. A
puzzling fact is that potential genes
associated with ALS that the researchers
found in their studies were different from
study to study. Although it is possible that
ALS is likely to be made of many gene
mutations and that country and racial
differences caused such different results,
these utterly different results have made us
uneasy.
I don't think such conflicting results mean
a setback or regression in ALS research at
all. A few years ago, we could not even
imagine that these types of studies would
be possible. But we now know that they
are not only possible, we already have a few
studies reported. We have been making
enormous progress in building a strong
foundation for the future of new genetic
studies. No ALS geneticists doubt that
there will be more genetic causes of ALS to
be discovered or genes that suggest
individual disease susceptibility, that is,
anyone is prone to ALS. At the same time,
we know a single gene is not enough to
cause ALS or determine the ALS type but a
combination of genes and factors beyond
genes such as environment and lifestyle
factors that would clearly influence not
only the cause but also the onset and
prognosis. We already have the right
technology to study more genetic factors of
this disease. We need more genetic
epidemiology studies. In fact, 1000 or
2000 DNA samples may not be sufficient
to resolve the questions just raised.
We need to collect more DNAs along with healthy controls.
That means that we need to have an effective system and
sufficient funding to support tissue and body fluid banking.
Such patient and control material will surely increase the
research pace. Furthermore, we need to establish strong
collaboration not just within our country, but clearly with
international researchers. It is time to collaborate more
cohesively.
In this sense, on the last day of the Symposium, the Co-
Directors of our Columbia Motor Neuron Center (Drs.
Henderson, Przedborski and DeVivo) and myself (as the
head of ALS Center) held an exploratory meeting with the
researchers from the two principle ALS research centers in
UK. Closer collaboration is another step in moving the
research process faster and making it more diverse.
During the Symposium, a number of satellite meetings
were held. The ALS Research Group (now headed by Dr.
Shefner, Syracuse) met to discuss how investigators can
develop a mechanism of effective tissue collection. Clinical
trial groups such as Northeastern ALS, Western ALS and
Columbia CoQ10 Study groups had their own meetings to
update the current status and future plans of clinical trials
in ALS. Two very intriguing meetings were held: one was
about a new potential clinical trial which is being
developed in England using a type of food supplement.
Another is a human embryonal stem cell therapy. Several
clinical trialists who were invited all agreed that more basic
animal studies are needed before we can consider clinical
studies. Therefore, I feel there are exciting developments
and I learned a lot at this Symposium. I hope you share
my strong feeling that a lot is going on, far more than I can
summarize in this Newsletter.
For the New Year, I reviewed my commitment to continue
to provide the best care and management for those who
have this difficult disease along with the spouses and
families who care for their loved ones. Research work and
clinical care must come in tandem.
Hiroshi Mitsumoto, MD
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