ADVR Reports AVR118
Inhibits Inflammatory Arthritis in Animal Model and in
Rheumatoid Arthritis Patients in Human Clinical Trial
Wednesday December 3, 1:37 pm ET
YONKERS, N.Y., Dec. 3 /PRNewswire-FirstCall/ -- Advanced Viral
Research Corp. (OTC Bulletin Board: ADVR - News) today announced
that its novel immunomodulator AVR118 (formerly known as Product
R) has exhibited therapeutic effects in both an animal model of
inflammatory arthritis and in a clinical trial of patients with
rheumatoid arthritis. In experiments with an animal model of
inflammatory arthritis, performed at The Weizmann Institute of
Research in Rehovot, Israel, the administration of AVR118
significantly suppressed the development of inflammation in the
animals' joints compared to non-treated control animals. The
results in the animal model were validated by an open-label
clinical trial conducted in Argentina in 27 patients. All
patients in the trial had improvement in quality of life
including resolution or significant decrease in intensity of
pain, the ability to exercise, to perform housework, and to
engage in social activities. In addition, all patients showed
objective signs of decreased inflammation, and increased
mobility, of affected joints.
"These positive results highlight the anti-inflammatory
properties of AVR118 and underline the potential of AVR118 as an
anti-inflammatory therapeutic agent," said Eli Wilner, Chairman
of the Board of ADVR.
Animal Model
In the Weizmann Institute animal model, inflammatory arthritis
was induced by injecting complete Freund's adjuvant containing
inactivated Mycobacterium tuberculosis into rats. AVR118 was
administered for 14 days out of the twenty-four days that the
animals were observed for the full development of inflammation.
The anti-inflammatory effects of AVR118 were evident even for
the ten days following the discontinuation of the drug. This
adjuvant arthritis model in animals serves as an experimental
model for human rheumatoid arthritis.
Clinical Study
In the clinical trial, 27 female patients, ranging in age from
29 to 50 years, with mild to moderately severe rheumatoid
arthritis, were treated with AVR118 for a period of 90 days.
These patients had previously been treated with other
anti-inflammatory drugs such as aspirin. By day 90, all patients
had either complete regression or significant decrease of joint
swelling. Measurements of joint mobility showed improvement in
all patients. All patients showed decreases in the level of the
erythrocyte sedimentation rate (ESR) by day 90 of therapy and
most patients showed decreases in the latex fixation test. There
were no significant side effects of AVR118 observed in this
study.
"Inflammation and cachexia are inextricably linked by metabolic
pathways that have common origins and targets; areas where
modulation can occur for maximum impact on the process," said
James T. D'Olimpio M.D., a clinical consultant to ADVR and
expert in the treatment of cachexia. "In addition, the pathways
involved with inflammation are not just confined to separate and
distinct disease entities, but are a common thread that impacts
on quality of life in many unrelated diseases such as AIDS,
Cancer, Rheumatoid Arthritis and other conditions in which
weight loss, weakness, poor outcomes and non- compliance to
treatment are major clinical concerns. These results appear to
confirm the potent anti-inflammatory properties of AVR118."
Cytokines and chemokines play important roles in the progression
of rheumatoid arthritis. The development of clinical rheumatoid
joint inflammation is associated with increase of the chemokine
interleukin-8 (IL-8) in joint tissue. Pro-inflammatory cytokines
such as interleukin-1 (IL-1), tumor necrosis factor-alpha (TNF-alpha)
and interleukin-6 (IL-6) are present at high levels in arthritic
joints and their blood concentrations increase with the severity
of the disease. Monocytes migrate into the joints from the blood
and are activated to differentiate into macrophages in the joint
tissue by inflammatory cytokines and chemokines such as IL-1,
IL-6, IL-8, and TNF-alpha. Activated macrophages play an
important role in joint inflammation and destruction. The joint
tissue attracts the monocytes into the joints through the
production of the chemokines monocyte chemoattractant protein-1
(MCP-1) and IL-8. In laboratory experiments ADVR scientists have
shown that AVR118 modulates the synthesis of cytokines and
chemokines including MCP-1, IL-8, IL-1 beta, and IL-6. Although
AVR118 stimulates the synthesis of the pro-inflammatory
chemokines MCP-1 and IL-8 by native monocytes in cell culture,
highly activated macrophages are turned off with decreased
synthesis of MCP-1 and IL-8.
"Rheumatoid arthritis is a systemic disease that serves as a
model for other auto-immune diseases. The anti-inflammatory
activity of AVR118 in the animal model, and in the rheumatoid
arthritis patients in the clinical trial, including the
amelioration of the systemic manifestations of the disease,
suggests the possibility of treating not only Rheumatoid
Arthritis with AVR118 but also a broad range of inflammatory
processes associated with human diseases," explained Shalom Z.
Hirschman, M.D., Chief Scientist at ADVR. "In the laboratory,
AVR118 modulates the synthesis of pro-inflammatory cytokines and
chemokines implicated in the inflammatory process in patients
with Rheumatoid Arthritis. If these clinical results are
validated by future clinical trials, then AVR118 would represent
an important advance in the treatment of this systemic disease
marked by crippling arthritis."
"The potential of a non-toxic immunomodulator such as AVR118 in
the therapy of Rheumatoid Arthritis could be significant, as
AVR118 appears to lack the often toxic effects of currently used
mainstay therapies such as corticosteroids, COX inhibitors, gold
compounds and methotrexate," stated Irach Taraporewala, Ph.D.,
ADVR's head of structural chemistry. Dr. Taraporewala is an
experienced research scientist in the design of
anti-inflammatory small molecules for the treatment of
rheumatoid arthritis.
Rheumatoid Arthritis Market
Rheumatoid arthritis usually begins between the ages of 25 to 55
years. More than 85% of patients with rheumatoid arthritis are
over the age of 50. Among patients with rheumatoid arthritis,
women outnumber men by three to one. In the United States,
approximately 1% of the population, or 2.5 million people, have
rheumatoid arthritis. It occurs in of all ethnic groups and in
all parts of the world. As the population in the developing
world ages, and with a rising incidence of the disease, the
world market for safe and effective rheumatoid arthritis
treatment is projected to reach $6.6 billion annually by the
year 2009.
ADVR's AVR118 represents a biopolymer chemistry that possesses
novel immunomodulator activity. This peptide-nucleic acid, which
to date has shown no indication of human toxicity, appears to
stimulate the proinflammatory responses required to combat viral
infections such as AIDS and human papilloma virus and to dampen
aberrant autoimmune-type inflammatory responses, such as occur
in patients with rheumatoid arthritis. Therefore, AVR118 has
been termed a "switch-type" immunomodulator. AVR118 is in
clinical trials in Israel for the treatment of cachexia (body
wasting) in patients with AIDS.
For further information regarding Advanced Viral Research Corp.,
please visit our website at www.adviral.com.
Advanced Viral Research Corp., based in Yonkers, New York, is a
biopharmaceutical firm dedicated to improving patients' lives by
researching, developing and bringing to market new and effective
therapies for viral and other diseases.
Note: This news release contains forward-looking statements that
involve risks associated with clinical development, regulatory
approvals, including application to the FDA, product
commercialization and other risks described from time to time in
the SEC reports filed by the Company. AVR118 (Product R) is not
approved by the U.S. Food and Drug Administration or any
comparable agencies of any other countries. There is no
assurance that the Company will be able to secure the financing
necessary to continue and/or complete the clinical trials of
AVR118 or satisfy certain other conditions relating to clinical
trials including obtaining adequate insurance on terms
acceptable to the Company. The Company undertakes no obligation
to update or revise the information contained in this
announcement whether as a result of new information, future
events or circumstances or otherwise.
Contact:
Eli Wilner
914-376-7383
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