Print

Print


No, but it is just the first gene therapy
attempted by Oxford Biomedica plc.

Carolyn
 
If you greatly desire something, have the guts to
stake everything on obtaining it. ~~Brendan
Francis
 
Dignity comes not from control, but from
understanding who you are and taking your rightful
place in the world. ~~Real Live Preacher
-----Original Message-----
From: Parkinson's Information Exchange Network
[mailto:[log in to unmask]] On Behalf
Of rayilynlee
Sent: Thursday, March 13, 2008 8:49 PM
To: [log in to unmask]
Subject: First PD Gene Therapy

First Parkinson's Gene Therapy Planned by Oxford
Biomedica
By Nuala Moran
BioWorld International Correspondent
LONDON - Oxford Biomedica plc said the first
patient is within days of being 
treated with ProSavin, its gene therapy treatment
for Parkinson's disease. 
The neurosurgery required to administer it has
been booked, but the company 
has agreed with the Henri Mondor Hospital in Paris
where the trial is taking 
place not to disclose the actual date.
It is the first European trial of a gene therapy
to treat Parkinson's 
disease and also the first use of Oxford
BioMedica's LentiVector gene 
delivery system in humans. ProSavin delivers genes
for the three enzymes, 
tyrosine hydroxylase, GTP-cyclohydrolase 1 and
aromatic amino acid 
decarboxylase, that are required for the synthesis
of the neurotransmitter 
dopamine. The product is administered by
microinjection into the striatum, 
where it works to convert the target cells into a
replacement dopamine 
factory.
In animal models, that translates to improvements
in movement within one to 
two weeks and full recovery within five to eight
weeks. To date the effect 
of a single injection has been maintained for 27
months. "Essentially this 
is a cure with a single administration," said Alan
Kingsman, CEO. "This is 
remarkable by any standards. We are not aware of
any other product that does 
so well in this model, other than L-Dopa."
But while L-dopa is effective in the early stages
of Parkinson's disease, as 
the substantia nigra where it is processed into
dopamine is destroyed by the 
disease, it becomes ineffective. The 18 patients
in the Phase I/II trial 
will be failing on L-Dopa. First data are expected
around the middle of this 
year, and if the effect in animals is replicated
Kingsman said Prosavin will 
go into a Phase III trial in late 2009.
Oxford BioMedica also said it has completed
recruitment of the first Phase 
III trial of its cancer immunotherapeutic TroVax
in treating advanced renal 
cancer, putting it on track to get approval before
the end of 2009 and 
triggering a substantial milestone payment from
partner Sanofi-Aventis SA.
The company has agreed on a special protocol
assessment with the FDA, which 
means it needs only to confirm that the trial
meets its primary endpoint of 
an increase in survival. The analysis will be
carried out once the 309th 
death occurs in the 700 patient trial, an event
that is expected to occur in 
the first half of 2009.
"We are tracking our data very carefully: 82
percent of case reports are in 
the data center. That is a very high proportion of
data to be live at this 
time," said Chief Medical Officer Mike McDonald.
"Once we have 309 events, 
we can close in 10 weeks. It leaves us with one
data point to discuss with 
the FDA, and that is the primary endpoint."
At the same time, Sanofi-Aventis is in the final
stages of preparing for a 
Phase III trial in metastatic colorectal cancer,
which will recruit 1,300 
patients. "The protocol has been submitted, and
there have been positive 
discussions with the FDA. No fundamental issues
have been raised," McDonald 
said.
Another 3,000 patient UK Phase III trial of TroVax
as an adjuvant treatment 
in early stage colorectal cancer is due to kick
off in mid-2008. "TroVax is 
making steady progress to commercialization," he
said.
The product targets the 5T4 antigen that is
expressed on the surface of all 
solid tumors apart from melanoma and does not
occur elsewhere in the body. 
The amount of antigen increases as the tumor
develops. To date TroVax has an 
impeccable safety record, with no patient choosing
to withdraw from 
treatment, and more than 90 percent mounting an
immune response.
Antibody levels generated are similar to that
reported for other cancer 
vaccines, but TroVax also elicits a cellular
immune response. "That's what 
distinguishes it from other [cancer vaccines] out
there," McDonald said. In 
all but one trial there was a direct correlation
between the strength of the 
immune response and the increase in survival.
Oxford BioMedica outlined the progress with the
portfolio as it reported its 
2007 financial results. Those show how the ?518
million (US$794.4 million) 
deal with Sanofi-Aventis signed a year ago, has
transformed the fortunes of 
the Oxford, UK-based company. "We were cash
generative in 2007 for the first 
time, and at the year end had £38 million cash,"
Kingsman said. He added 
that 2007 "was a great year, we really enjoyed
it."
Unfortunately, that rosy assessment has not been
reflected in the market, 
and the company's share price has halved in the
past 12 months. The results 
and progress report prompted a further fall of
£0.75 to £27.25.

Rayilyn Brown
Board Member AZNPF
Arizona Chapter National Parkinson's Foundation
[log in to unmask] 

--------------------------------------------------
--------------------
To sign-off Parkinsn send a message to:
mailto:[log in to unmask]
In the body of the message put: signoff parkinsn

----------------------------------------------------------------------
To sign-off Parkinsn send a message to: mailto:[log in to unmask]
In the body of the message put: signoff parkinsn