Oncolytics Biotech® Inc. (NASDAQ: ONCY) (TSX: ONC) today announced the successful completion of the three-patient safety run-in for the pancreatic cancer cohort of the phase 1/2 GOBLET study following evaluation by the study’s Data Safety Monitoring Board (DSMB).
The DSMB noted no safety concerns in these patients and recommended the study proceed as planned. The safety run-in for the trial’s third-line metastatic colorectal cancer cohort remains ongoing.
The GOBLET study is being managed by AIO, a leading academic cooperative medical oncology group based in Germany, and is designed to evaluate the safety and efficacy of pelareorep in combination with Roche’s anti-PD-L1 checkpoint inhibitor atezolizumab in patients with metastatic pancreatic, metastatic colorectal, and advanced anal cancers. The study remains ongoing and is expected to enroll patients at 14 clinical trial sites across Germany.
“This positive safety evaluation adds to a robust body of evidence demonstrating the favorable safety profile of pelareorep-checkpoint inhibitor combinations across multiple indications,” said Thomas Heineman, M.D., Ph.D., Chief Medical Officer of Oncolytics. “It also represents an important step in the development of these combinations for the treatment of pancreatic cancer and builds on prior clinical proof-of-concept data in this indication. These data highlight the potential of pelareorep to benefit patients with pancreatic and other gastrointestinal cancers by reversing immunosuppressive tumor microenvironments that limit the effectiveness of checkpoint inhibitors. We believe adding pelareorep to treatment regimens will improve clinical response rates in these patients, and we look forward to evaluating this hypothesis through successfully advancing the GOBLET study.”
The GOBLET study’s pancreatic cancer cohort extends previously reported clinical data demonstrating the synergy and anti-cancer activity of pelareorep combined with checkpoint inhibition in pancreatic cancer patients who progressed after first-line treatment (link to PR, link to poster). It also builds on prior early clinical data that showed a greater than 80% increase in median progression-free survival in pancreatic cancer patients with low levels of CEACAM6 expression who received pelareorep in combination with chemotherapy (link to PR, link to poster). In addition to evaluating the safety and efficacy of pelareorep-atezolizumab treatment, GOBLET also seeks to demonstrate the potential of CEACAM6 and T cell clonality as predictive biomarkers, which may increase the likelihood of success of future registrational studies by allowing selection of the most appropriate patients.
The GOBLET (Gastrointestinal tumOrs exploring the treatment comBinations with the oncolytic reovirus peLarEorep and anTi-PD-L1) study is a phase 1/2 multiple indication study in advanced or metastatic gastrointestinal tumors. The study is being conducted at 14 centers in Germany. The co-primary endpoints of the study are objective response rate (ORR) assessed at week 16 and safety. Key secondary and exploratory endpoints include additional efficacy assessments and evaluation of potential biomarkers (T cell clonality and CEACAM6). The study employs a Simon two-stage design with Stage 1 comprising four treatment groups expected to enroll a total of approximately 55 patients:
- Pelareorep in combination with atezolizumab, gemcitabine, and nab-paclitaxel in 1st line metastatic pancreatic cancer patients (n=12);
- Pelareorep in combination with atezolizumab in 1st line MSI (microsatellite instability)-high metastatic colorectal cancer patients (n=19);
- Pelareorep in combination with atezolizumab and TAS-102 in 3rd line metastatic colorectal cancer patients (n=14); and
- Pelareorep in combination with atezolizumab in 2nd line advanced and unresectable anal cancer patients (n=10).
Any cohort showing an ORR above a pre-specified threshold in Stage 1 may be advanced to Stage 2 and enroll additional patients.
AIO-Studien-gGmbH (AIO) emerged from the study center of the internal oncology working group within the German Cancer Society (DKG). AIO operates with a non-profit purpose of promoting science and research with a focus on internal oncology. Since its foundation, AIO has become a successful sponsor and study management company and has established itself both nationally and internationally.
About Gastrointestinal Cancer
Excluding skin cancers, colorectal cancer is the third most common cancer, with an estimated 104,270 new cases of colon cancer and 45,230 new cases of rectal cancer expected to be diagnosed in the U.S. in 20211. Also, for the 2021 year, the American Cancer Society estimates there will be 60,430 new cases of pancreatic cancer2 and 9,090 new cases of anal cancer3 in the U.S.
- “Key Statistics for Colorectal Cancer.” The American Cancer Society, American Cancer Society, Inc., https://www.cancer.org/cancer/colon-rectal-cancer/about/key-statistics.html
- “Key Statistics for Pancreatic Cancer.” The American Cancer Society, American Cancer Society, Inc., https://www.cancer.org/cancer/pancreatic-cancer/about/key-statistics.html
- “Key Statistics for Anal Cancer.” The American Cancer Society, American Cancer Society, Inc., https://www.cancer.org/cancer/anal-cancer/about/what-is-key-statistics.html