On October 25, 2018 Sitka Biopharma reported that Quark Venture Inc. and GF Securities, through their Global Health Sciences Fund (GHS), has invested $1.9M into Sitka – financing that will enable the company to complete critical GLP toxicology studies and GMP manufacture of clinical drug product (Press release, Sitka Biopharma, OCT 25, 2018, View Source [SID1234530250]). This in turn will allow Sitka and partner Cancer Research UK (CRUK) to complete initial Phase 1 clinical trials of STK-01, Sitka’s lead product for the treatment of bladder cancer.
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A spin-off of CDRD and the University of British Columbia (UBC), Sitka Biopharma is a preclinical biotechnology company focused on developing its breakthrough nanoparticle platform technology to increase absorption of drugs in difficult-to-penetrate tissues. While STK-01 is being developed for the treatment of bladder cancer, follow-on indications of the current core formulation include intraperitoneal delivery for ovarian cancer and other indications where localized drug delivery would be advantageous but currently ineffective due to those penetration challenges.
Preclinical studies have established that Sitka’s candidate formulation significantly improved bladder tissue uptake when compared to the commercial docetaxel formulation. Furthermore, the proprietary hyperbranched polyglycerols (HPG)-docetaxel formulation demonstrated superior efficacy over commercial docetaxel – providing a preclinical proof-of-concept.
Dr. Michael Parr, Sitka’s President and Chief Scientific Officer said, "This is an extremely pivotal investment for Sitka as it means we can complete the final IND-enabling studies and take our lead therapeutic for bladder cancer into the clinic via our partnership with CRUK. This investment sets up the company for rapid progression through those initial clinical trials and we can also begin planning to expand STK-01 to additional indications."
Ms. Karimah Es Sabar, Chief Executive Officer of Quark Venture and Director of GHS Fund commented "GHS Fund believes Sitka is poised for an important medical breakthrough in bladder cancer. This initial success will be leveraged for further development of the platform in other indications, including ovarian cancer."
Bladder cancer is the 4th most common cancer in men, and has the highest per patient lifetime cost of all cancers. The challenge in bladder cancer is that because of the nature of the bladder, drugs are not well-absorbed and only stay in the bladder for as long as the patient does not void their bladder – a critical issue addressed by the Sitka technology.
This technology was initially developed through a collaboration between the UBC and CDRD. Additional early funding included grants from the Canadian Institutes of Health Research (CIHR), Genome British Columbia, and the National Research Council of Canada’s IRAP Program. Quark Venture provided the first private financing in March 2016