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Trial
finds Teva drug could slow Huntington's disease
http://www.globes.co.il/en/article-teva-pridopidine-could-slow-huntingtons-d
isease-1001153229
Globes
Correspondent 09/19/2016
Teva
Pharmaceutical Industries Ltd. <http://www.tevapharm.com/> today
announced
what could be a major breakthrough in the treatment of
Huntington's
Disease (HD) with positive results from its exploratory Phase
II
PRIDE-HD study. The trial found a statistically significant impact on the
endpoint
of the progression of Huntington Disease at 52 weeks following
treatment
with Pridopidine at certain doses versus placebo. The effect of
Pridopidine
was further evident in a sub-population of patients with early
stage
HD, an effect first observed at 26 weeks.
"Slowing
down the progression of this disease has proven to be impossible
until
now. These findings give us a reason to believe we may be finally
making
progress in slowing deterioration of disease," said Spyros
Papapetropoulos,
Teva's VP Clinical Development, Neurodegenerative Diseases.
This
was a 52-week, dose-ranging trial of Pridopidine twice daily versus
placebo,
in the treatment of Huntington disease (HD). The study was directed
at
measuring improvement in motor function and the effect on HD progression.
An
unusually high placebo effect, extending beyond that expected from
previous
studies, limited the ability to determine treatment effects on
assessments
of HD motor scores. Evidence of symptomatic impact, however, was
seen
in the early stage HD patient sub-population, with improvement in Total
Motor
Score (TMS) and dystonia observed at 26 and 52 weeks in this patient
sub-set
(stage 1 HD) at specific doses.
The
discovery of Pridopidine's previously unknown mode of action as a potent
agonist
of the Sigma 1 Receptor (S1R) resulted in a change in PRIDE-HD study
design,
from a 26-week study focused on symptoms, to a 52-week study focused
on
exploring pridopidine's potential impact on disease progression, as
measured
by Total Functional Capacity (TFC).
"I
am encouraged by these results, which provide us with clear insights into
the
approach to be taken in Phase III development", said Michael Hayden,
President
of Teva Global R&D and Chief Scientific Officer. "My obvious hope
is
that this will provide the HD community with a medicine capable of
slowing
down the progression of this devastating disease."
"These
study results are very important for the HD community and for the
continued
development of pridopidine. Firstly, pridopidine's safety profile
has
been confirmed and extended. Secondly, we now have a clearer idea of the
dosages
to study in Phase 3. Lastly, we have some of the most encouraging
evidence
to date about an intervention which may slow the inexorable
functional
decline of HD," said Karl Kieburtz, M.D., M.P.H., Director of the
Clinical
& Translational Science Institute at the University of Rochester
Medical
Center.
The
results seen in this exploratory study will need to be confirmed in a
Phase
III program that will be developed in collaboration with relevant
regulatory
agencies.
Pridopidine
is an investigational, oral small molecule being developed for
the
treatment of HD that exerts its effect as an agonist of S1R. S1R plays a
key
role in neuroprotection through increased production of brain-derived
neurotrophic
factor (BDNF). Levels of BDNF are decreased in HD and other
neurodegenerative
disorders including Parkinson's disease, Alzheimer's
disease
and ALS.
================================
Huntington
Study Group PRIDE HD Study Information:
http://huntingtonstudygroup.org/current-clinical-trials/pride-hd-study/
. No information available yet on
enrolling for the Phase 3 study.
. No facilities in Florida participated in
the Phase II study:
https://clinicaltrials.gov/ct2/show/study/NCT02006472?show_locs=Y#locn