MEETING REVIEW:
Genome Medicine:
Gene Therapy for the Millennium
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| Dr Anna Rüdeberg |
My participation in the meeting on Gene Therapy was not only
motivated by the highly appreciated invitation by Barbara
Palys and Dieter Gruenert, but also by my professional interest
in CF and other genetic disorders. The attractiveness of this
meeting for me was much increased by the fact that it was
held in Rome, the city were I was born and which I left 30
years ago. In the heart of Rome, 50 meters from the Spanish
Steps, in a congress center where I used to meet school friends,
I felt at home more than ever: at home in Rome, but also at
home in these specific areas of medicine and science.
My attention was focused particularly on the current knowledge
of gene therapy, on its ethical implications and on the socio-political
issues. These areas were treated in sessions where research
workers, medical personnel, patients, members of family support
groups, and socio-political professionals were given the opportunity
to exchange viewpoints.
"
it
is still wholly experimental."
Before delving into the complexity of the ethical implications,
we were brought up to date in gene discovery, on new animal
models and on the tools for evaluation of disease progression
and therapy. One of the most interesting discussions arose
on the fetal somatic gene therapy, also in my eyes a concrete
and eventually possible way of therapy. Charles Coutelle,
UK, made it clear to us all, however, that it is still wholly
experimental. The conflicting reactions and opinions in the
field of gene therapy are probably a consequence of ignorance,
confusion and misunderstanding. Proper information and the
decrease of economic, political and journalistic manipulations
will work out in favor of the patients concerned.
"
often
give the impression that these hypotheses are already proven."
I am surprised by the discrepancy between the rationality
of the scientific efforts to improve therapy and the ethical
issues involved. Although the therapeutic methodologies for
cure and prevention of genetic diseases are still based on
theoretical and experimental hypotheses, the media (especially
press and television) often give the impression that these
hypotheses are already proven. This has ethical implications,
which, although the methods would be truly welcome, may create
problematic issues due to lack of correct information. Thus,
erroneous information has already generated ludicrous accusations,
such as "playing God", deliberate manipulation of
the germ-line and the creation of "designer babies".
The more people will be informed, the better they will understand
the ongoing research and the more transparent will be the
final outcome.
The complexity of the scientific hypotheses is vast, the
theoretical possibilities are of an unlimited number, but
the solutions put into practice are relatively scarce and
often very astute and tricky. The methods finally used must
not only be effective, but they must also be safe.
According to several speakers, at present fetal somatic gene
therapy is also a purely experimental approach, using animal
models to assess the choice of vectors, route of administration
and candidate diseases. It is self-evident that the various
animal models have to be tested for their true relevance to
each specific illness.
The experimental gene therapy strategy requires more exploration
in some areas, among these reasons for, and risks involved,
in prenatal gene therapy; the possibility of inadvertent modification
of the germ-line and, of course, all the particular prerequisites
which have to be considered, before application in humans
can be carried out.
Dorothy C. Werts, U.S.A. described the influence of the Ethics
Committee of HUGO (the Human Genome Organization) in the field
of gene therapy. This committee has developed a statement
to curb public fears. The statement supports research on somatic
cell therapy, urges the establishment of national ethics committees
(where such do not already exist) that include gene therapy
in their mandates, recognizes the need for ongoing oversight,
requires disclosure of researcher conflicts of interest to
patients, urges establishment of schemes of indemnification
for those harmed by gene therapy research, and proposes discussion
of possible future uses of gene therapy for enhancement and
germ-line interventions.
"In depth
information about benefits and risks should be provided
"
Once the safety and reliability of a gene therapeutic method
has been proven, the time will have come to address other
questions regarding this specific method with the help of
social and political authorities of the countries concerned.
These questions comprise cost/effectiveness calculations,
equal accessibility, and genetic as well as prenatal screening.
To become truly preventive, gene therapy will require universal
medical support and broad ethical acceptance. In depth information
about benefits and risks should be provided, not only to the
families with genetic diseases and the health professionals
working with them, but also to the lay public.
"
the
journey to reach the goal will be full of obstacles."
I left the congress with a deep conviction that the presentations
and the discussions had produced confidence in the future
development of this special kind of therapy, in which the
integrity of the genome will be protected and safe integrating
vectors introduced. The immense research efforts in developing
gene therapies are accompanied by similar socio-political
efforts to respect and protect the rights of all parties concerned.
These efforts inspire a well-founded hope, even if we know
that the time needed will be long and the journey to reach
the goal will be full of obstacles.
Anna Rüdeberg,
IACFA Medical advisor
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