Provectus Biopharmaceuticals, Inc. (NYSE MKT:PVCT) (http://www.pvct.com),
a development-stage oncology and dermatology biopharmaceutical company,
provides shareholders with an update on its corporate accomplishments,
clinical progress and business development efforts during 2013, and
shares as well as insights on upcoming plans and milestones for 2014.
Dear Shareholders,
Since our last letter, Provectus has gone through significant changes on
multiple levels. The past several months have placed us in a much
different, and stronger position than we had been previously. This is
true for our regulatory path, our scientific situation, our corporate
structure, our financial strength and our commercial prospects. This is
an ideal time to review where we have been and to discuss where we are
going in a continuing effort to be as transparent as possible.
The most prominent development recently was the information obtained
from our application for Breakthrough Therapy Designation (BTD) to the
FDA for PV-10 in the treatment of locally advanced cutaneous melanoma.
In the interest of transparency, we announced every step of the BTD
process, including the date of submission of our application and the
release of the FDA’s response letter. While the immediate result was not
what we had hoped, we are enthusiastic about the FDA’s statement that
“The preliminary clinical data provided in your request for Breakthrough
Therapy designation are indicative of drug activity in the treatment of
local, satellite or in-transit recurrence of malignant melanoma.” This
communication between the FDA and Provectus has proved quite valuable in
discerning our regulatory path forward.
PHASE 2 RESULTS
Our development plans for PV-10 stem from the results of our phase 2
study. In that trial, tumors were no longer detectable in 50% of
patients with locally advanced cutaneous melanoma who had all of their
existing lesions injected. Results from these patients support the
potential of PV-10 as a single agent, and provide rationale for a phase
3 randomized controlled trial in patients with unresectable, locally
advanced cutaneous melanoma.
Top-line results from the phase 2 trial have been posted on
clinicaltrials.gov, for the study entitled “Phase 2 study of
Intralesional PV-10 for Metastatic Melanoma,” [NCT00521053]. http://clinicaltrials.gov/ct2/show/NCT00521053?term=NCT00521053&rank=1
When we completed data collection two years ago, we knew we had a
promising oncolytic agent with consistent response in injected tumors,
but we also had intriguing data on the bystander effect that implicated
a secondary immunologic mechanism of action. At that time, we had no
agreement with FDA on a proposed indication, no phase 3 clinical trial
drug supply and too many variables for design of an efficient phase 3
trial.
The gap between completion of the data collection and the outlining of
our plans in the conference call of June 19, 2014, stemmed from these
regulatory hurdles and from our determination to properly structure a
study where we could adequately predict the outcome. When preparing for
phase 3 testing it is critical to understand exactly what your drug is
doing, which patients are most likely to benefit, what other options
these patients have, and what endpoint or endpoints would be most
convincing for government agencies to approve the drug.
After presenting data from our phase 2 study in a Type C meeting last
December and in our BTD application submitted this spring, the FDA
confirmed that locally advanced cutaneous melanoma is a serious
condition. With this agreement on indication, our subgroup analysis of
data from these patients in the phase 2 trial, and an appropriate phase
3 supply chain for our drug, we are now in a position to embark on the
phase 3 study.
PHASE 3 OUTLINE FOR MELANOMA
The planned phase 3 study will assess response to intralesional PV-10
vs. that of systemic chemotherapy in patients with disease confined to
cutaneous and subcutaneous sites. These patients will have failed or be
ineligible for systemic immunotherapy. Patients who would be eligible
have extremely limited options, consisting principally of systemic
chemotherapy (such as DTIC or temozolomide) or a clinical trial.
The primary endpoint of the study is progression-free survival (PFS)
assessed using standard RECIST 1.1 criteria. Secondary endpoints are
complete response rate and overall survival. Progression-free survival
and overall survival are standard endpoints for oncology approvals. With
these assessment methods and endpoints we’re following what the FDA has
suggested to document the clinical benefit to patients after
intralesional injection. And, we’ll measure patient reported outcomes to
better characterize the relationship between complete response and
symptoms of locally advanced cutaneous melanoma, such as pain and
bleeding.
Based on estimated effect size derived from the phase 2 data and
literature data for the comparator drugs, we project that approximately
210 patients will be needed for the study, with 2 to 1 randomization.
Meetings with scientific advisors, investigators and advocates in the
field have led us to expect a starting date for the phase 3 study
sometime in the second half of 2014. Based on our experience enrolling
similar patients in the mechanism of action study we’re sponsoring at
Moffitt Cancer Center, we are confident about enrolling patients within
an 18-month target, starting with the eight existing PV-10 sites, which
are currently enrolling melanoma patients, and expanding to additional
sites as the study proceeds.
We have recently signed agreements with two manufacturers to supply us
with clinical-quality PV-10, and we now have sufficient quantities of
PV-10 available to commence this phase 3 trial and undertake our other
development activities. To assure smooth execution of the study we’ve
lined up specialty contract research organizations (CROs) and other
service providers with expertise in clinical operations and integrated
data management. As is standard in our industry, this includes a
full-service, international CRO who will coordinate the global efforts
of this team of specialists.
We’ll work with this team to establish an independent Clinical Trial
Data Monitoring Committee (DMC). The FDA states “A clinical trial DMC is
a group of individuals with pertinent expertise that reviews on a
regular basis accumulating data from one or more ongoing clinical
trials. The DMC advises the sponsor regarding the continuing safety of
trial subjects and those yet to be recruited to the trial, as well as
the continuing validity and scientific merit of the trial.” The DMC will
ensure that our study provides patients with maximum possible safety
while protecting the scientific validity and integrity of the data we
gather.
THE INTRALESIONAL APPROACH TO TREATMENT
Provectus is not alone in advocating for an intralesional approach in
the treatment of cancer. For melanoma patients with recurrent or
in-transit disease confined to their skin this approach has been used to
treat patients for many years, as evidenced by guidelines published by
the National Comprehensive Cancer Network (NCCN Guidelines®)
defining the standard of care for cancer treatment in the United States.
Intralesional injection with BCG and certain immunomodulatory agents,
local ablation, topical therapy for superficial lesions and regional
radiotherapy are consensus interventions for these patients, while
systemic therapy remains an option and participation in a clinical trial
is the preferred option. We believe that, in this context, PV-10 is well
positioned to show superiority in phase 3 testing as a single agent.
And for those patients who do not have all disease accessible to
injection, medical oncologists have stated that using an agent like
PV-10 to prime the immune system could be synergistic in combination
with a systemic agent. Our patent application on this strategy was
published in 2012 and we’ve been vigorously pursuing this approach. The
nonclinical research we first presented at the Society for Immunotherapy
of Cancer (SITC) annual meeting that year, together with ongoing
translational clinical research on PV-10’s mechanism of action we are
sponsoring at Moffitt Cancer Center and our own phase 2 data, provide a
rationale for combination testing of PV-10. This development track,
separate from the phase 3 study, using PV-10 in combination with
checkpoint protein inhibitors could present a path forward for patients
with significant disease burden not amenable to intralesional injection.
LIVER AND METASTATIC CANCERS
We have recently expanded our exploratory phase 1 study of cancers of
the liver to 3 centers (St. Luke’s University Health Network, Bethlehem,
PA and The Southeastern Center for Digestive Disorders & Pancreatic
Cancer, Tampa, FL in addition to Sharp Memorial Hospital, San Diego,
CA), and we’re evaluating addition of several additional centers to
further advance this initial effort. We’re working with our
investigators to report results from long-term follow-up of our initial
patients in coming months. And we’re assessing strategies to accelerate
transition to phase 2 testing in a randomized controlled trail, either
alone or in combination with systemic therapy. Any combination studies
in the liver are likely to follow similar development strategies to
those outlined above for melanoma and rely on much of the same
foundational science.
The current phase 1 study, initially designed solely to establish safety
of percutaneous injection of PV-10 into liver tumors (that is, injection
through the skin), is providing valuable data crucial for planning such
phase 2 development. This trial is open to patients with hepatocellular
carcinoma or other cancers metastatic to the liver who have at least one
tumor that has either originated in or spread to the liver and are not
candidates for surgery or transplant. All patients enrolled in this
open-label study receive the same treatment: an interventional
radiologist injects PV-10 percutaneously into a single liver tumor.
Patients with multiple injectable tumors may later receive further PV-10
to their other tumors. We have received numerous inquiries about this
study from researchers as well as patients and their doctors, and refer
these to our investigators through the contact information available on
the clinicaltrials.gov website.
PH-10 FOR DERMATOLOGICAL TREATMENTS
So far over 220 patients have participated in phase 1 and 2 trials of
PH-10. We anticipate posting results from these studies on the
clinicaltrials.gov website in the coming months and are encouraged by
what has been observed to date. Following the model we’ve used
successfully with PV-10, we’re planning a translational clinical study
to better understand the possible immunologic mechanism of PH-10 in the
skin in relation to psoriasis, eczema and other inflammatory dermatoses.
Our investigators are currently evaluating the results of our studies.
When their assessments are complete, we will move forward with the
necessary further trials and regulatory requirements to bring this
compound to patients who need it.
PATENT PORTFOLIO
Provectus has built a solid portfolio of patents to protect our
shareholders’ value. Among recent additions to this portfolio are: US
Patent 8,557,298, “Medicaments for Chemotherapeutic Treatment of
Disease,” which provides detailed protection of PV-10; US Patent
8,530,675, “Process for the Synthesis of
4,5,6,7-tetrachloro-3’,6’-dyhydroxy-2’,4’,5’,7’-tetraiodo-3H-spiro[isobenzofuran-1,9’-xanthen]-3-one
(Rose Bengal) and Related Xanthenes,” which details our new process for
the manufacture of Rose Bengal and related iodinated xanthenes in high
purity; and US Patent Application 2012/0263677, “Combination of Local
and Systemic Immunomodulative Therapies for Enhanced Treatment of
Cancer,” which covers methods for treating cancer through combination
use of intralesional agents (such as PV-10) with systematic anticancer
agents (such as checkpoint protein inhibitors).
SCIENTIFIC CONFERENCES
During the past several months, researchers have presented data on PV-10
in multiple major international conferences. These include annual
meetings of the American Society of Clinical Oncology, the European
Association of Dermato-Oncology and the American Association for Cancer
Research. We believe participation in these conferences is vital to
bring a higher profile to PV-10 among oncology researchers. This, in
turn, will help us with patient accrual and with further scientific work
to support our belief in the efficacy and safety of PV-10.
INTERNATIONAL LICENSING OPPORTUNITIES
Provectus has provided data on a confidential basis to both potential
global and geographic partners for both PV-10 for oncology and PH-10 for
dermatology via a secure electronic data room. We are encouraged by the
number of companies doing due diligence on our technologies. For
instance, we recently had a team in India meeting with potential
partners and have two teams focused in China working with potential
partners there.
Whenever we obtain a Memorandum of Understanding (MOU), definitive
agreement or similar indication of interest from a potential partner, we
will issue a press release and Form 8-K filing to notify the market.
Furthermore, the strategy of the company for the benefit of shareholders
is a series of partnerships followed by an acquisition of the company
along the lines of Celgene/Abraxis.
We have already signed an advisory agreement with China's TriRiver
Capital to help identify distribution and joint venture partners for
PV-10 in China. This agreement is intended to enhance our reach into
China and will bolster our efforts in developing partnering
opportunities in various countries in Asia including China, India and
Japan, where we have held numerous detailed discussions with
pharmaceutical companies over the last year. We are already seeing the
results of efforts to enter into partnerships from the activity in our
electronic data room.
MONETIZING PV-10 AND PH-10
The primary financial objective of the Company is to strategically
monetize the core value of PV-10 and PH-10 through the various
transactions discussed elsewhere in this letter. Ultimately, the Company
wants to leverage value creation through the sale of the business or a
merger that may include upfront cash, acquirer stock, and/or a
contingency value right (CVR) as part of the total consideration. A CVR
represents the right for its holder to receive certain defined payments
upon the achievement of a specified milestone and would be designed to
facilitate potential upside for the Company’s shareholders on a
post-transaction basis. A CVR could trade on an exchange. The Company is
not in discussions regarding the sale of its business and there can be
no assurance, however, that the Company will be able to monetize PV-10
or PH-10 in the manner described herein.
SUFFICIENT CAPITAL ON HAND
Our financial position and corporate governance are such that we expect
to continue to meet the relevant listing requirements of NYSE MKT. We
believe our efforts to obtain regulatory clarity will be helpful to
facilitate such transactions with potential partners. Additionally, the
existing and forthcoming clinical and nonclinical mechanism of action
data for both PV-10 and PH-10 are expected to further aid in both
regulatory clarity and transactions with potential partners. The
Company’s current cash position is sufficient to meet our obligations.
In addition, management is returning $8.96 million to the Company as a
result of the previously announced settlement of a shareholder
derivative lawsuit (subject to a 2:1 credit to the executives, such that
total actual repayment by the executives may be $1.12 million per
executive) and further enhanced our strength by management’s recent
exercise of options. In total, we have adequate funds to operate without
a further injection of capital through mid-2015.
CORPORATE DEVELOPMENTS
We have changed our Company’s name to Provectus Biopharmaceuticals, Inc.
because it better communicates to the public and to prospective
corporate partners the current and future nature of the Company’s
business operations and enables us to better implement the Company’s
business plan. Further, we have reincorporated in Delaware as this gives
us more flexibility, clarity and predictability with respect to our
corporate governance.
In addition, we have “up-listed” our stock onto the NYSE MKT. Moreover,
we have added several important individuals to our Strategic Advisory
Board:
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Jacob M. Plotsker, MBA, currently Director of US Strategy and
Lifecycle Management at Bayer Healthcare. He currently serves on the
board of directors of Emisphere Technologies, a publicly traded drug
delivery technology company. From 2008 to 2014, he served on the board
of directors of Sharsheret, a national 501(c)(3) not-for-profit
organization providing support and resources to young women living
with breast cancer. He also served as President of Sharsheret from
2009-2012.
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Dr. Joseph M. Chalil, MD, MBA, FACHE, Associate Director, Health
Science Executives of Boehringer Ingelheim, the world's largest
privately held pharmaceutical company. A veteran of the United States
Navy Medical Corps, Dr. Chalil is also board certified in healthcare
management, and has been awarded Fellowship by the American College of
Healthcare Executives. Dr. Chalil is an expert in US Healthcare policy
and a strong advocate for patient centered care, and has also served
as an advisor to various national political campaigns on healthcare
issues.
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Brendan O'Brien, MBA, currently VP of Strategic Planning & Analysis
for North American Pharmaceuticals at Sanofi, responsible for business
planning and strategy development. He has also worked for Smithkline
Beecham Pharmaceuticals and for Pfizer.
Further, we have retained Roberti+White to assist in developing a
commercialization strategy for PV-10 by implementing a plan to expand
our congressional outreach to key Members of Congress, Congressional
Committees and Caucuses that address healthcare issues. Roberti+White
will also advise us on FDA regulatory issues as they arise and develop
action plans in response to such developments. When conditions warrant,
Roberti+White will also assist the Company in development of an
effective Medicare coverage, coding and payment strategy for its
products in development.
We are grateful for the long-term support of our shareholders and their
faith in our Company’s future. The next several months hold great
promise for Provectus, and we look forward to sharing the latest
developments with you.
FORWARD-LOOKING STATEMENTS: This letter contains “forward-looking
statements” as defined under U.S. federal securities laws. These
statements reflect management’s current knowledge, assumptions, beliefs,
estimates, and expectations and express management’s current views of
future performance, results, and trends and may be identified by their
use of terms such as “anticipate,” “believe,” “could,” “estimate,”
“expect,” “intend,” “may,” “plan,” “predict,” “project,” “will,” and
other similar terms. Forward-looking statements are subject to a number
of risks and uncertainties that could cause our actual results to
materially differ from those described in the forward-looking
statements. Readers should not place undue reliance on forward-looking
statements. Such statements are made as of the date hereof, and we
undertake no obligation to update such statements after this date.
Risks and uncertainties that could cause our actual results to
materially differ from those described in forward-looking statements
include those discussed in our filings with the Securities and Exchange
Commission (including those described in Item 1A of our Annual Report on
Form 10-K for the year ended December 31, 2013, and in our Quarterly
Report on Form 10-Q for the quarter ended March 31, 2014), and the
following:
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our determination, based on guidance from the FDA, whether to
proceed with or without a partner with a phase 3 trial of PV-10 to
treat locally advanced cutaneous melanoma and the costs associated
with such a trial if it is necessary;
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our determination whether to license PV-10, our melanoma drug
product candidate, and other solid tumors such as liver cancer, if
such licensure is appropriate considering the timing and structure
of such a license, or to commercialize PV-10 on our own to treat
melanoma and other solid tumors such as liver cancer;
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our ability to license our dermatology drug product candidate,
PH-10, on the basis of our phase 2 atopic dermatitis and psoriasis
results, which are in the process of being further developed in
conjunction with mechanism of action studies; and
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our ability to raise additional capital if we determine to
commercialize PV-10 and/or PH-10 on our own, although our
expectation is to be acquired by a prospective pharmaceutical or
biotech concern prior to commercialization.
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Copyright Business Wire 2014