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MINNEAPOLIS , Nov. 28, 2022 (GLOBE NEWSWIRE) -- Panbela Therapeutics, Inc . (Nasdaq: PBLA), a clinical stage company developing disruptive therapeutics for the treatment of patients with urgent unmet medical needs, today announced its first patients enrolled in Europe for its ASPIRE global clinical trial in the first-line treatment of metastatic pancreatic cancer. ASPIRE is a global randomized, double-blind placebo-controlled clinical trial to evaluate ivospemin in combination with gemcitabine and nab-Paclitaxel in patients with metastatic pancreatic ductal adenocarcinoma. Detailed information on the trial can be located at https://clinicaltrials.gov/ct2/show/NCT05254171.
“We’re really excited, after just recently announcing regulatory approval for the opening of trial sites in Europe , to have our first patients enrolled in Italy,” said Jennifer K. Simpson , PhD, MSN , CRNP, President & Chief Executive Officer of Panbela. “Having European enrollment underway is highly encouraging as we continue to ramp up the trial. We’re targeting the interim analysis in early 2024.”
With approximately 95 sites planned throughout the United States , Europe , Australia , and South Korea , Panbela is continuing to focus on site initiation and enrollment in order to ultimately deliver a more effective treatment for pancreatic cancer, a deadly disease with few treatment options. The Company expects that a significant number of global sites will be open by year-end with the full complement of sites open by early-mid 2023.  
About our Pipeline
The pipeline consists of assets currently in clinical trials with an initial focus on familial adenomatous polyposis (FAP), first-line metastatic pancreatic cancer, neoadjuvant pancreatic cancer, colorectal cancer prevention and ovarian cancer. The combined development programs have a steady cadence of catalysts with programs ranging from pre-clinical to registration studies.
SBP-101 Ivospemin
Ivospemin is a proprietary polyamine analogue designed to induce polyamine metabolic inhibition (PMI) by exploiting an observed high affinity of the compound for pancreatic ductal adenocarcinoma and other tumors. It has shown signals of tumor growth inhibition in clinical studies of metastatic pancreatic cancer patients, demonstrating a median overall survival (OS) of 14.6 months and an objective response rate (ORR) of 48%, both exceeding what is typical for the standard of care of gemcitabine + nab-paclitaxel suggesting potential complementary activity with the existing FDA-approved standard chemotherapy regimen. In data evaluated from clinical studies to date, ivospemin has not shown exacerbation of bone marrow suppression and peripheral neuropathy, which can be chemotherapy-related adverse events. Serious visual adverse events have been evaluated and patients with a history of retinopathy or at risk of retinal detachment will be excluded from future SBP-101 studies. The safety data and PMI profile observed in the previous Panbela-sponsored clinical trials provide support for continued evaluation of ivospemin in the ASPIRE trial. For more information, please visit https://clinicaltrials.gov/ct2/show/NCT03412799 ;.
Flynpovi ™
Flynpovi is a combination of CPP-1X (eflornithine) and sulindac with a dual mechanism inhibiting polyamine synthesis and increase polyamine export and catabolism. In a Phase 3 clinical trial in patients with sporadic large bowel polyps, the combination prevented > 90% subsequent pre-cancerous sporadic adenomas versus placebo. Focusing on FAP patients with lower gastrointestinal tract anatomy in the recent Phase 3 trial comparing Flynpovi to single agent eflornithine and single agent sulindac, FAP patients with lower GI anatomy (patients with an intact colon, retained rectum or surgical pouch), Flynpovi showed statistically significant benefit compared to both single agents (p≤0.02) in delaying surgical events in the lower GI for up to four years. The safety profile for Flynpovi did not significantly differ from the single agents and supports the continued evaluation of Flynpovi for FAP.
CPP-1X
CPP-1X (eflornithine) is being developed as a single agent tablet or high dose power sachet for several indications including prevention of gastric cancer, treatment of neuroblastoma and recent onset Type 1 diabetes. Preclinical studies as well as Phase 1 or Phase 2 investigator-initiated trials suggest that CPP-1X treatment may be well-tolerated and has potential activity.