Canopus Biopharma (CE) (USOTC:CBIA)
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From Mar 2020 to Mar 2025

Canopus BioPharma, Inc. (OTC: CBIA), has confirmed the efficacy of its
oncology candidate, CB1400, as a tumor reducing agent and has also
demonstrated the synergistic effect of this drug in combination with
both cisplatin and cetuximab (Erbitux) in two mice lung cancer models.
Chairman of Canopus BioPharma, Dr. Patrick Prendergast, stated, “We
at Canopus are encouraged with the discovery of this new use for CB1400
to increase efficacy and reduce toxicity issues associated with
conventional chemotherapeutic agents.”
CB1400, a former schistosomal drug, is currently in phase II clinical
development as an anti-mucositis preventative agent in patients
receiving radio- and/or chemotherapy treatment. Current anti-mucositis
drugs have shown tumor-protective properties. For this reason CB1400 was
evaluated by Canopus to determine its effect on tumor growth.
In work carried out by the Harvard School of Dental Medicine, Boston, on
behalf of Canopus BioPharma, it was confirmed that CB1400 as a single
agent significantly reduces tumor growth. In an initial study, tumor
growth was inhibited by 48.8% in mice treated with cisplatin, the most
commonly used chemotherapy drug. CB1400 alone showed 62.3% tumor growth
inhibition while the combination of both compounds further increased
inhibition to 69.6%, thus confirming a synergistic effect between
cisplatin and CB1400. In addition, there was no evidence of toxicity
based on observations of survival and weight change in the mice and
there was no evidence that CB1400 protected the tumor.
Cisplatin is a platinum-containing chemotherapeutic drug, administered
by IV injection which has been used for more than 30 years to treat
various forms of cancer. Enhanced efficacy with CB1400 may prevent the
development of drug resistance that is common with cisplatin.
In a similar study, tumor growth was inhibited by 61% in mice treated
with cetuximab (Erbitux) alone. An almost 30% increase in efficacy was
observed with the addition of CB1400 to cetuximab, increasing tumor
inhibition to 89.4%, confirming a synergistic effect of combining the
two anti-tumor drugs. Similar to the cisplatin study, there was no
significant difference in mean weight or survival between the groups of
mice; and no toxicity was observed in this study.
Cetuximab is a chimeric monoclonal antibody, an epidermal growth factor
receptor inhibitor used as a chemotherapeutic agent, administered by IV
injection for the treatment of various cancers. Enhancing the efficacy
of cetuximab may have potential in treating patients no longer
responding to traditional chemotherapy.
About Canopus BioPharma, Inc.:
Canopus BioPharma, Inc. (OTC: CBIA) is dedicated to providing the
safest, most cost effective and efficacious pharmaceutical products and
assay methods in the areas of infectious disease, radiation protection,
cancer, and addiction. With innovative science, proven research and
development leadership, and superior products and compounds, Canopus
BioPharma has, since 2001, been committed to becoming a market trend
setter in a new era of healthcare. In addition, the Company is a world
leader in the development of novel camelid antibody products to provide
unique avenues of progress and improvement in assay methods and
monitoring capabilities for physicians, patients and researchers,
initially for food chain protection applications. Canopus maintains
staff in Australia, South Africa, Ireland, Panama and the USA.
Additional information on the Company is available at www.canopusbiopharma.com.