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Oncolytics Biotech Presents Positive Updated Pancreatic Cancer Data from GOBLET Phase 1/2 Study at ESMO

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Oncolytics Biotech Inc. (NASDAQ: ONCY),( Oncolytics) (TSX: ONC), a clinical-stage immunotherapeutics company focused on oncology, today announced the poster presentation of positive, updated results from the Phase 1/2 GOBLET study evaluating pelareorep-based combination therapy in patients with pancreatic ductal adenocarcinoma (PDAC) at the European Society for Medical Oncology meeting (ESMO 2023), taking place in Madrid, Spain.

Dr. Matt Coffey, President and Chief Executive Officer of Oncolytics….

“We are very pleased to share such positive and consistent data on pelareorep from the PDAC arm of the GOBLET study, including an impressive overall response rate, 7.2 months of median progression-free survival, interim median overall survival of 10.6 months, and expansion of both pre-existing and new T-cell clones. These data build upon results from previous studies showing the clinical benefit of pelareorep combination therapy in PDAC and support the decision to move to a licensure-enabling study in pancreatic cancer,” said Everything we do at Oncolytics is focused on advancing the development of our immunotherapy candidate, pelareorep, with a goal of providing improved care and longer survival for patients with pancreatic cancer and other tumor types. The data we are presenting at ESMO provide a solid foundation as we advance our pancreatic cancer program through the Precision PromiseSM Phase 3 trial in this indication.”

Summary of Data and Findings from the PDAC Arm of the Phase 1/2 GOBLET Study:

Tumor Responses: Consistent with the abstract, data from the study outlined patient responses, including:

  • Objective Response Rate (ORR) of 62% (54% confirmed by two or more scans)
  • A Disease Control Rate (DCR) of 85%

Survival data: Evaluated based on 4 parameters including:

  • Median duration of response was 5.7 months
  • Median progression-free survival (PFS) was 7.2 months
  • Interim 12-month survival rate was 46%
  • Interim median overall survival (OS) was 10.6 months

T-Cell Populations: Analysis of changes of T-cell clones and tumor-infiltrating lymphocytes (TILs) showed:

  • Mean baseline TIL cell levels of 22%
  • Expansion of pre-existing and new T cell clones, including the expansion of TIL-specific clones
  • A correlation between the expansion in the blood of TIL-specific clones and tumor response

Safety: The treatment combination has been well tolerated with no safety concerns

  • Most common grade 3 and 4 treatment-related adverse events were related to red and white blood cell counts (anemia, neutropenia and decreased neutrophil counts)

“The data from this study show a correlation between the expansion of TIL-specific clones and tumor response, which provides compelling support for the use of pelareorep-based therapies in immunologically “cold” tumors. In particular, these data, along with the impressive clinical results, support the ability of pelareorep-checkpoint inhibitor combination therapies to meaningfully improve treatment responses in diseases like pancreatic cancer that have resisted immune-based therapeutic approaches,” said Thomas Heineman, M.D., Ph.D., Chief Medical Officer at Oncolytics. “Given the urgent need for better treatment options for patients with pancreatic cancer, we are especially gratified to observe that results from the combination regimen we are evaluating surpassed published historical results1-4. We look forward to beginning the Precision PromiseSM Pivotal Phase 3 platform trial as soon as possible, and we wish to express our sincere gratitude to all the patients, caregivers, and study site personnel associated with the GOBLET trial.”

GOBLET Study PDAC Patient Overview:

Patients in the PDAC cohort, presented at ESMO 2023, are undergoing first-line treatment with a combination of pelareorep, atezolizumab, gemcitabine and nab-paclitaxel. The 13 evaluable patients enrolled in the first stage of the study have been evaluated based on a September 18, 2023 data cut-off date. The enrolled patient population included 93% of patients with metastatic disease (69% with liver metastases) and baseline ECOG scores of 0 (31%) and 1 (69%), with an average age of 61.2 years.

References

1. Von Hoff D et al. N Engl J Med 2013; 369:1691-1703 DOI: 10.1056/NEJMoa1304369

2. O’Reilly et al. Eur J Cancer. 2020 June; 132: 112–121. DOI:10.1016/j.ejca.2020.03.005

3. Karasic et al. JAMA Oncol. 2019 Jul 1; 5(7):993-998. DOI: 10.1001/jamaoncol.2019.0684

4. Tempero et al. Ann Oncol. 2021 May; 32(5):600-608. DOI: 10.1016/j.annonc.2021.01.070

Poster Information

Poster Title

Pelareorep (pela) + atezolizumab (atezo) and chemotherapy in first-line (1L) advanced or metastatic pancreatic ductal adenocarcinoma (PDAC) patients – Results from the GOBLET study

Final Publication Number (FPN)

1623P

Poster Date

October 23, 2023

About GOBLET

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 12 centers in Germany and is being managed by AIO-Studien-gGmbH. 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:

  1. Pelareorep in combination with atezolizumab, gemcitabine, and nab-paclitaxel in 1st line advanced/metastatic pancreatic cancer patients (n=12);
  2. Pelareorep in combination with atezolizumab in 1st line MSI (microsatellite instability)-high metastatic colorectal cancer patients (n=19);
  3. Pelareorep in combination with atezolizumab and TAS-102 in 3rd line metastatic colorectal cancer patients (n=14); and
  4. 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.

About AIO

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 medical oncology. Since its foundation, AIO has become a successful sponsor and study management company and has established itself both nationally and internationally.

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