Genetic
Immunity, a US/Hungarian clinical-stage biopharmaceutical company focusing
on the development of its patented immunotherapeutic platform technology,
announced clinical safety and immunogenicity data on its DermaVir Patch, a
topically administered HIV immune therapy. The presentation, titled,
“Single DermaVir Patch Treatment of HIV+ Individuals Induces Long Lasting,
High Magnitude and Broad HIV-Specific T Cell Responses,” was given at the
15th Annual Conference on Retroviruses and Opportunistic Infections (CROI)
in Boston, February 3-6, 2008.
Presently available antiretroviral drugs interfere with the viral life
cycle, but because of their toxicity and resistance profiles are typically
prescribed as late as possible in the disease progression. Recent findings
with DermaVir Patch treatment suggest that this innovative medicine induces
new HIV specific immune responses in HIV infected patients not achievable
by antiretroviral drugs. Such an alternative treatment approach has the
capability to address the needs of those HIV positive individuals who have
not yet begun drug therapy as well as those who are currently on drug
therapy.
Genetic Immunity studied nine HIV infected individuals on fully
suppressive antiretroviral therapy who were treated a single time with
either 0.1, 0.4 or 0.8 mg of multiple HIV antigens encoding plasmid DNA,
the active substance in DermaVir Patch. The same antiretroviral drug
regimen was continued during the one-year follow-up.
HIV-specific T cell Precursors with High Proliferative Capacity (PHPC)
were quantified via an assay performed by Franco Lori, M.D. and his
collaborators. The DermaVir Patch treatment resulted in significant
induction of PHPC counts in all nine patients in the study. Importantly,
these precursor T cell responses were long lasting, 10-100 fold increased
PHPC counts over baseline were detected during the one year follow up. An
independent study has demonstrated that PHPC count inversely correlates
with viral load.
Safety was assessed with standard clinical and laboratory evaluations,
and dermatological analysis of skin reaction. DermaVir Patch continued to
show a lack of dose limiting toxicities. Through multiple studies, the only
side effect seen so far has been limited to transient erythema (redness of
the skin).
Julianna Lisziewicz, Ph.D., Co-Founder and CEO of Genetic Immunity,
said, “The distinctive safety and immunogenicity data is consistent with
our primate studies showing viral load reduction associated with immune
responses induced by DermaVir Patch treatment. The Genetic Immunity team is
encouraged by this data, which suggests that the DermaVir Patch is on its
way to becoming the first immune therapy for HIV-infected individuals.”
Franco Lori, M.D., CEO of Virostatics said, “In an independent
experiment, we demonstrated that high PHPC counts significantly correlate
with low viral load. The clinical results of the DermaVir Patch suggest a
novel immunogenicity profile. We are hopeful that many patients may see
benefit from this truly innovative antiviral therapy.”
About Genetic Immunity(R)
Genetic Immunity is a US/Hungarian development stage company
establishing leadership in next-generation biopharmaceuticals. The Company
is leveraging its proprietary platform technology to create new markets for
infectious diseases, cancer and allergy through the discovery, development
and commercialization of topically administered immune therapies. These
indications represent significant unmet medical need and potential for
alternative treatment approaches. Genetic Immunity’s lead product, the
DermaVir Patch for the treatment of HIV/AIDS, was discovered by the
Company’s founders, and is in Phase II clinical development with the
opportunity to be the first immune therapy approved for HIV-infected
individuals.
About DermaVir Patch
The proprietary DermaVir Patch is a topically administered HIV immune
therapy, which emerged from the clinical observations of Genetic Immunity’s
founders. Their examination of the “Berlin Patient” proved that induction
of immune control of HIV replication is feasible in an infected patient.
The Company has developed the DermaVir Patch to induce the immune system to
kill HIV infected cells specifically and to make immune therapy accessible
for the majority of HIV infected individuals, including children. The
DermaVir Patch, currently in Phase II clinical trials, is comprised of two
patented components: NanoComp and DermaPrep. NanoComp is an antigen
composition platform that combines a disease-specific plasmid DNA with the
Company’s formulation technology. The unique DNA for the DermaVir Patch
product encodes the majority of HIV antigens, allowing a broad immune
response. DermaPrep is a topical administration device by which NanoComp is
delivered specifically into the dendritic cells.
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