Investor Attention Turns to Biotech as Traditional Cancer Research Models Strain

Issued on behalf of Oncolytics Biotech Inc.

VANCOUVER – Baystreet.ca News Commentary – As traditional research institutions face growing budget constraints, the burden of advancing cancer treatment is shifting more heavily onto the shoulders of private enterprises. Early onset cancer diagnoses are rising, and with federal funding at NIH under pressure, the most promising innovations may increasingly come from nimble, precision-driven biotech firms. Among those gaining attention from investors are Oncolytics Biotech Inc. (NASDAQ: ONCY) (TSX: ONC), NovoCure Limited (NASDAQ: NVCR), Nuvation Bio Inc. (NYSE: NUVB), Guardant Health, Inc. (NASDAQ: GH), and SELLAS Life Sciences Group, Inc. (NASDAQ: SLS).

Analysts are forecasting a powerful tailwind for oncology markets. According to Precedence Research, immunotherapy alone is projected to reach a global market value of US$1.2 trillion by 2033, growing at an annual rate of 18%, while Vision Research Reports predicts broader oncology spending to top US$900 billion by the end of the decade. As major treatment modalities evolve—from cell therapy to real-time diagnostics—investors are increasingly focused on the companies pushing boundaries in clinical development, delivery, and disease monitoring.

Oncolytics Biotech Inc. (NASDAQ: ONCY) (TSX: ONC) is gaining new visibility ahead of its upcoming presentation at the 2025 ASCO Annual Meeting, where the company will unveil new clinical trial data on pelareorep’s immunological activity in pancreatic cancer. The data, drawn from the GOBLET study, highlights how pelareorep appears to convert immunologically “cold” tumors into “hot,” inflamed environments—potentially making them more vulnerable to immune attack.

Specifically, new analyses show pelareorep induces a pro-inflammatory tumor microenvironment (TME) and activates both innate and adaptive immunity. This is a rare achievement in pancreatic ductal adenocarcinoma (PDAC), a cancer type widely considered resistant to immune-based therapies.

“For the first time, we’re able to map the cascade of immune responses stimulated by pelareorep,” said Thomas Heineman, M.D., Ph.D., Chief Medical Officer for Oncolytics. “It starts with the expansion of anti-reovirus T cells, followed by the upregulation of chemokines that mediate the expansion of pre-existing TIL (tumor-infiltrating lymphocyte) clones in the blood.”

According to Heineman, these immune cells don’t just expand in the bloodstream—they’re believed to return to the tumor itself and help shrink it.

“These T cells can now return to the tumor and attack it, resulting in a reduction in tumor size,” Heineman added. “Pelareorep-mediated upregulation of chemokines also makes the tumor microenvironment immunologically active and able to actively recruit cancer-specific T cells to the tumor. These findings deepen our understanding of pelareorep’s ability to convert immunologically cold tumors into immunologically active ones that may benefit from pelareorep-based combination therapy.”

The abstract, titled “Role of pelareorep in activating anti-tumor immunity in PDAC,” (Abstract #2562) will be presented as a poster during the Developmental Therapeutics – Immunotherapy session on June 2, 2025. A copy will be made available on the Media page of Oncolytics’ website following the session.

This new mechanistic insight builds on prior efficacy data from GOBLET Cohort 1, where pelareorep—combined with nab-paclitaxel, gemcitabine, and the checkpoint inhibitor atezolizumab—produced a 62% overall response rate, 85% disease control rate, and 45% 12-month survival rate in first-line metastatic PDAC patients.

For context, GOBLET is a multi-cohort, phase 1/2 study evaluating pelareorep in combination with various immunotherapy and chemotherapy regimens across gastrointestinal cancers. Conducted in partnership with AIO-Studien-gGmbH in Germany, the trial uses an adaptive design: cohorts meeting efficacy thresholds may expand enrollment. In pancreatic cancer, this trial is a proving ground for pelareorep’s use in first-line and newly diagnosed settings—potentially setting up future pivotal decisions.

Progress continues elsewhere in the GOBLET study as well. In Cohort 5, newly diagnosed metastatic PDAC patients received pelareorep with modified FOLFIRINOX, with or without atezolizumab. After completing the safety run-in in six evaluable patients, the study has been cleared to proceed by both Germany’s Paul-Ehrlich-Institut and an independent data safety monitoring board. This arm is backed by a US$5 million PanCAN grant, with further data expected in 2026. Favorable data from this cohort could expand pelareorep’s potential addressable market in this indication.

Meanwhile, in anal cancer, Cohort 4 has already reported signs of durable response. Of 12 evaluable patients treated with pelareorep and atezolizumab, four achieved partial responses, and one reached a complete response lasting more than 15 months—results that surpass historical benchmarks for checkpoint inhibitors alone. The cohort is now being expanded to validate these findings and assess registrational potential.

In breast cancer, the recently completed randomized phase 2 BRACELET-1 trial in HR+/HER2- metastatic disease showed patients receiving pelareorep plus paclitaxel nearly doubled their progression-free survival compared to paclitaxel alone. These outcomes are supportive of those seen in a prior randomized phase 2 study and strengthen the case for a pivotal trial.

Key opinion leaders continue backing pelareorep’s approach. In a recent panel hosted by H.C. Wainwright, Profs. Martine Piccart and Alexander Eggermont emphasized how pelareorep may help “turn cold tumors hot”—a key requirement for making immunotherapies effective in traditionally resistant cancers.