Assigning a value to development-stage biotech companies is a
questionable task, and generally requires more
intangible assumptions (market potential, clinical
trial progress, partnership implication) than tangible assumptions
(balance sheet, income statement, various financial strength
indicators). However, the merit in such assessment is that
biotech investments have a more pronounced value inflection point
that could, if things go well,
represent a significant return on investment in multiples instead
of percentages. In that scope, I would like to present
Oncothyreon, a biotech company developing cancer
therapies; it's lead product is Stimuvax, a cancer
vaccine.
Cancer vaccines are designed to treat cancer by stimulating the
immune system to fight the cancer; the general public is more aware
of this class of medicine due to recent milestone achievements by
Dendreon in developing Provenge. Stimuvax is a more
traditional biologic approach to what Dendreon is attempting to
achieve through Provenge (ex vivo cell therapy). Biologic
cancer vaccines target a specific tumor cell antigen (antigens are
markers that allows the immune system to recognize non-self entity
such as tumor), but this is a technical disadvantage
against cellular products: tumor antigens can differ from patient
to patient, and tumor to tumor, because cancer is a mutative
disease. However, from a commercial product perspective,
biologics are cheaper to produce, and can be off-the-shelf, which
makes them more compatible to traditional pharmaceutical business
model; this is probably the reason Oncothyreon was able to partner
its cancer vaccine earlier in the development timeline compared to
its peers such as Dendreon.
Stimuvax is partnered with Merck, and Merck initiated a Phase 3
clinical trial for non-small cell lung cancer (START study) in
December 2006 under this partnership. The terms of the
partnership agreement surrenders clinical development,
commercialization, and manufacturing rights. Oncothyreon will
receive royalties on the sales, which, however, could be a
substantial source of revenue considering typical blockbuster
performance by cancer drugs; there are no approved maintenance
therapies for patients responding to first-line treatment for
unresectable stage III non-small cell lung cancer (NSCLC).
The existing data from Phase 2 trial in NSCLC is compelling:
median survival for subset of patients with Stage IIIB
NSCLC was 30.6 months for patients treated with Stimuvax + standard
of care (SoC) vs. 13.3 maonths for the patients treated with SoC
alone. What's more encouraging than the existing
data or the August 3 2009 press release ("Oncothyreon announces
presentation of long-term Stimuvax data at World Conference on Lung
Cancer", or ir.oncothyreon.com/re...00512)
is the fact that after 3 years into Phase 3 clinical trial in Stage
IIIB NSCLC, Merck has initiated another Phase 3 clinical trial in
breast cancer, the STRIDE study (Jun 22 2009 PR
ir.oncothyreon.com/re... Given the typical cost and
resource requirements of clinical trials, this is a good indicator
that substantial scientific, medical, and commercial feasibility is
established to commit and invest more in the program.
Oncothyreon, in addition to its Stimuvax, also has a healthy
product pipeline. Although not as cutting-edge or sexy as the
biologic cancer vaccine, 3 small molecules are being studied in
early clinical trials: Px-12 for pancreatic cancer in Phase 2,
Px-478 for multiple solid tumors in Phase 1, and Px-866 for
multiple solid tumors in Phase 1. It's probably too early to
comment on these drug candidates, nor are any of them partnered to
suggest anything.
In conclusion, Oncothyreon is a biotech company with good
trackrecord in regards to drug development and business development
with enormous potential
(risk?). It's a good company to review and consider for
placing a bet on the biotech gamble.