- PRO 140
has FDA fast track designation that allows accelerated approval
- The
drug protects healthy cells from HIV infection by binding to CCR5 cellular
co-receptor
- Market
for PRO 140 as a single agent therapy projected at about $4 billion
annually
- CYDY
recently initiated its first cancer trial in triple negative breast
cancer, targeting an unmet medical need
CytoDyn Inc. (OTCQB: CYDY), a biotechnology company focused
on the development and potential commercialization of humanized monoclonal
antibodies for the treatment and prevention of Human Immunodeficiency Virus
(HIV), expects to gain final FDA approval for its HIV treatment, PRO 140, by
the fourth quarter of 2019, with market availability estimated to follow by
2020.
“We do have a rolling submission with the FDA,” Nader Z.
Pourhassan, Ph.D., President and CEO of CytoDyn, said in a recent
interview (http://ibn.fm/5mOd9)
with Uptick Newswire. “So, we can submit as we get each module ready. By the
end of the first quarter of 2019, we should have all of our BLA modules
submitted to the FDA. If we do, our fast track designation for PRO 140 allows
us to have accelerated approval which is 6 months.”
Leronlimab (PRO 140) is part of a new class of HIV drugs
that protects healthy cells from infection by the virus. It’s a humanized IgG4
monoclonal antibody that binds to CCR5, a cellular co-receptor with multiple
roles including implications for HIV infection, tumor metastasis and immune
signaling. Less frequent dosing, minimal side effects and hardly any toxicity
are among multiple potential benefits that distinguish PRO 140 from HIV
treatments in current use.
“Our product is a simple, one dose per week and it’s a
simple injection,” Pourhassan continued. “This is once per week, self-administered
at home. They can forget about their HIV for the rest of the week.”
The HIV co-receptor CCR5 plays a key role in the ability of
HIV to enter and infect healthy T-cells. PRO 140 blocks the CCR5 receptor and
prevents viral entry. Results of clinical trials so far have shown that PRO 140
has no negative affect on normal immune functions mediated by CCR5. There have
been no drug-related SAE’s in the roughly 700 patients who have taken it. Phase
3 human clinical trials have shown that PRO 140 can significantly reduce viral
burden in patients infected with HIV. The company is also conducting a phase 3
investigative trial with PRO 140 as a once weekly single agent therapy for HIV
patients. If approved as a monotherapy it could replace the current standard of
care, called Highly Active Antiretorviral Treatment (HAART), for certain
patients.
HIV weakens the body’s immune system by attacking the
T-cells, which keep the body protected against infections and some cancers. The
World Health Organization reports that 1.8 million people were newly infected
with HIV in 2017 (http://ibn.fm/B5YkW).
Globally, nearly 37 million people live with HIV, which has already claimed 35
million lives. While there is no cure for HIV infection, effective
antiretroviral (ARV) drugs can control the virus and help prevent transmission
so that people with HIV can enjoy long and healthy lives. The potential market
size for PRO 140, when used as an anti-viral therapy in combination with a
patient’s current HIV treatment, is projected at $1.2 billion annually. The
annual market for PRO 140 used as a single agent monotherapy is estimated at
about $4 billion.
CytoDyn recently announced that it has a green light from
the U.S. Food and Drug Administration to conduct a clinical trial with PRO 140
as a treatment for patients with metastatic triple negative breast cancer
(TNBC). TNBC is an aggressive cancer with limited treatment options because of
a lack of targeted therapies (http://ibn.fm/QG0qs).
For more information, visit the company’s website at www.CytoDyn.com
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