On October 4, 2018 Heat Biologics, Inc. (NASDAQ: HTBX), a biopharmaceutical company developing drugs designed to activate a patient’s immune system against cancer, and its Pelican Therapeutics subsidiary ("Pelican") reported updates its novel PTX-35 co-stimulatory antibody (Press release, Heat Biologics, OCT 4, 2018, View Source [SID1234529923]). PTX-35 is designed to harness the body’s natural antigen-specific immune activation mechanisms. When combined with immunotherapies, including checkpoint inhibitors as well as Heat’s ImPACT and ComPACT technologies, PTX-35 has been shown to enhance antigen-specific T-cell activation to eliminate tumor cells in pre-clinical models.
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Recent PTX-35 highlights:
Completed cell line development and creation of validated master cell bank for cGMP manufacturing
Established CMC path for the production of GMP clinical material and non-clinical preliminary pharmacology / non-GLP toxicology studies
Preliminary non-GLP pharmacology demonstrates positive results, including efficient binding and activation on cells expressing the TNFRSF25 receptor, as well as increased expansion of T-cells in-vivo
2-week IND enabling dose range finding toxicology studies in primates receiving two doses show no signs or signals of clinical toxicity across wide dose range
Ongoing pre-IND discussions with FDA; expect to submit IND in Q1 2019
Rahul Jasuja, Ph.D., CEO of Pelican, commented, "We are progressing rapidly with our pre-clinical activities and expect to submit an IND for PTX-35 in the first quarter of 2019. We are strongly encouraged by the preliminary pre-clinical efficacy and safety data which shows no signs of toxicity across a wide range of doses."
Dr. Jasuja continued, "We have been efficient in our use of funds, which has allowed us to come in under budget, further extending our runway for this program. Given our operating efficiency thus far, we expect to receive the next tranche of grant funding once we fully utilize the funds that the Cancer Prevention Research Institute of Texas ("CPRIT") has previously provided. As we progress, our plan is to advance a broad clinical development program that could include combination therapy with Heat’s ImPACT and ComPACT therapies, as well as other costimulatory agonists, checkpoint inhibitors and immune modifiers to address the unmet need for patients who do not respond well to current cancer therapies."
The Company further reported that PTX-35 was featured in Nature’s Biopharma Dealmakers September 2018 edition, which is available at: View Source
To-date, Pelican has received $8.3 million in grants from CPRIT. The CPRIT award supports pre-clinical development, manufacturing and clinical development through a comprehensive 70-patient Phase 1 clinical trial for PTX-35. The Company expects to meet the qualifications to receive the third tranche of its $15.2 million CPRIT grant award, totaling $6.9 million, later this year.