Panbela Therapeutics, Inc. · OTC:PBLA
Panbela Therapeutics — Investor Presentation (April 2023)
40 slides from Panbela Therapeutics's investor presentation, Apr 26, 2023
Slide 1: Investor Presentation April 2023
Investor Presentation April 2023 Last modified April 26, 2023 Panbela Therapeutics
Slide 2: Disclaimers
Disclaimers Certain statements in this presentation are forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995 and are provided under the protection of the safe harbor for forward-looking statements provided by that Act. Forward-looking statements are b
Slide 3: Company Presents A Unique Opportunity: Multi-Targeted Approach to Reset Dysregulated Biology
Company Presents A Unique Opportunity: Multi-Targeted Approach to Reset Dysregulated Biology Scientific focus on polyamines, key regulators of normal biology altered in many disease states 1 Multiple near term inflection points CPP acquisition completed in 2022 to create complementary, multiprod
Slide 4: Highly Experienced Management Team with Proven Track Record
Highly Experienced Management Team with Proven Track Record Proven orphan and oncology drug discovery, development and commercialization expertise Dr. Jennifer Simpson Sue Horvath Rachel Bragg Chief Executive Officer Chief Financial Officer VP, Clinical Development 15+ Years 15+ Years 14+ Years Dr.
Slide 5: Dysregulation of the Polyamine Pathway Leads to Disease
Dysregulation of the Polyamine Pathway Leads to Disease Polyamine Dysregulation in Disease Cancer Pancreatic Autoimmune Diseases Familial Adenomatous Polyposis (FAP) Recent Onset Type 1 Diabetes Colorectal Ovarian STK11 Mutant NSCLC Neuroblastoma Initial focus on oncology and autoimmune disease - en
Slide 6: Pipeline May Address Multiple Unmet Needs
Pipeline May Address Multiple Unmet Needs Preclinical IND Ready Phase I Phase II Phase III Milestones PDA (First Line Metastatic) Phase III Ongoing; Interim Analysis Q1 2024 (ivospemin) (Injection) SBP-101 PDA Neoadjuvant Phase II Ready – Open 1H 2023 Ovarian Phase I Ready – Open Early 2023 (e
Slide 7: Potential Market Opportunity for Lead Programs
Potential Market Opportunity for Lead Programs Pancreatic Cancer FAP Colorectal Cancer Ovarian Cancer Incidence of Incidence of Incidence of Incidence of 1L Metastatic Pancreatic Cancer FAP Colorectal Cancer Ovarian Cancer 57K in US ~30K in US ~150K in US ~22K in US ~190K in EU ~50K in EU ~340K in E
Slide 8: Complementary Pharmacotherapies Targeting Dysregulation
Complementary Pharmacotherapies Targeting Dysregulation Pipeline Objective Combined pipeline pharmacotherapies hit different targets in the polyamine pathway The objective of Panbela’s pipeline is the utilization of pharmacotherapies to reduce/normalize increased disease- CPP-1X-T & CPP-1X-S associa
Slide 9: SBP-101
SH9 SBP-101 Panbela Therapeutics 9
Slide 10: Slide 9 SH9 ivospemin?
Slide 9 SH9 ivospemin? Sue Horvath, 2/28/2023
Slide 11: Preliminary Efficacy of SBP-101 + Gemcitabine/Nab-paclitaxel in First-Line Metastatic PDAC
Preliminary Efficacy of SBP-101 + Gemcitabine/Nab-paclitaxel in First-Line Metastatic Pancreatic Ductal Adenocarcinoma BEST OVERALL RESPONSE Overall Disease CR PR SD PD Response Control SBP-101 (0.40 mg/kg) + G/A* (Ph Ia COHORT 2) 0 5 (71%) 2 (29%) 0 5/7 (71%) 5/7 (71%) n=7 SBP-101 (0.40 mg/kg) + G/
Slide 12: Efficacy Comparison
Efficacy Comparison Treatment OS PFS ORR DCR PD CL-SBP-101-031 14.6 months 6.5 months 48.3% 82.8% 4.8% FOLFIRINOX2 11.1 months 6.4 months 31.6% 70.2% 15.2% Modified FOLFIRINOX3 10.2 months 6.1 months 35.1% 86.5% 13.5% Gemcitabine + Abraxane – 12.2 months 7.9 months 48% 68% 16% Phase 1/24 Gemcitabine
Slide 13: SBP-101 + Gemcitabine/Nab-paclitaxel Overall Survival
SBP-101 + Gemcitabine/Nab-paclitaxel Overall Survival* Cohort 2 N=7: 2 patients with long term survival. • One still alive at 33.1 months • One deceased at 30.3 months Cohort 4+1b = 6 patients still alive • One complete response (Recist) • One clinical complete response (no detectable tumor) * Data
Slide 14: Safety Results
SBP-101 + Gemcitabine/Nab-paclitaxel Demonstrated a Similar Safety Profile to Gemcitabine/Nab-paclitaxel in First-Line Metastatic Pancreatic Ductal Adenocarcinoma Safety Results SBP- Grade ≥3 AEs of Special Interest N G+A %** Grade ≥3 adverse events attributable to any study medication, N=50. 101% H
Slide 15: Phase III Pancreatic Cancer Trial in Subjects Previously Untreated for Metastatic PDAC
Phase III Pancreatic Cancer Trial in Subjects Previously Untreated for Metastatic SH10 Pancreatic Ductal Adenocarcinoma A Randomized, Double-Blind, Placebo Controlled Study of Nab-Paclitaxel and Gemcitabine with or Without SBP-101 OS-Overall Survival PFS-Progression Free Survival ORR – Overall Respo
Slide 16: Slide 14 SH10 Should we Say ASPIRE?
Slide 14 SH10 SHould we Say ASPIRE? Sue Horvath, 2/28/2023
Slide 17: FLYNPOVI: A combination of CPP-1X and Sulindac
FLYNPOVI: A combination of CPP-1X and Sulindac Panbela Therapeutics 15
Slide 18: Lead Product Opportunity – CPP-1X and Sulindac (Flynpovi)
Lead Product Opportunity – CPP-1X and Sulindac (Flynpovi) Familial Adenomatous Key Information: Polyposis (FAP) No approved FAP drugs on the market A genetic disease Target Physicians: Gastroenterologists caused by APC US-only potential revenue at market share of 35%-60% mutations where colo
Slide 19: FAP-310 Trial: Time to Delay FAP-related Event Endpoint
FAP-310 Trial: “Time to Delay FAP-related Event” Endpoint CPP FAP 310 global study 150 Patients Required (171 Patients Enrolled) Time to delay FAP-related events Composite Endpoint including surgeries, polyp removal, and 1:1:1 Randomization upper GI scoring system (“Spigelman”)*; based on FDA/EMA re
Slide 20: No Lower GI Surgeries for Flynpovi Combination
No Lower GI Surgeries for Flynpovi Combination Event Rate Distribution of FAP-Related Surgery Events in Lower GI Surgery Events ES Combo Eflornithine Sulindac Overall (N=56) (N=57) (N=58) (N=171) Need colectomy 0 3 4 7 Need proctectomy 0 1 1 2 Need pouch resection 0 4 1 5 Total Surgical Events 0 8 6
Slide 21: Flynpovi Combination Delays Need for Lower GI Surgery
Flynpovi Combination Delays Need for Lower GI Surgery Delay in Lower GI Surgery Events (Vertical hashmarks “|” denote when patient comes off study) 100 Subjects Event Free (%) 90 80 Treatment Groups 70 ES Sulindac 60 Eflornithine 50 0 6 12 18 24 30 36 42 48 Time from Randomization Date to FAP-relate
Slide 22: Rationale for Efficacy of Flynpovi in the Lower Gastrointestinal Tract of FAP Patients
Rationale for Efficacy of Flynpovi in the Lower Gastrointestinal Tract of FAP Patients Microbiome Diet MYC Growth/Tissue APC MAD1 ODC Put Polyamines Repair/Neoplasia K-RAS • Polyamines drive uncontrolled growth, polyposis, and cancer. • Polyamines can by synthesized but also derived from the diet an
Slide 23: High Concentrations of the Microbiota Contribute to the Impact of Polyamines in The LGI
High Concentrations of the Microbiota Contribute to the Impact of Polyamines in The LGI The microbiota increases steadily along the gastrointestinal tract. ◦ Small numbers in the stomach but very high concentrations in the colon. ◦ Areas of the LGI contain up to nine orders of magnitude (109) more
Slide 24: Adverse Events of Special Interest
Adverse Events of Special Interest Flynpovi (Eflornithine + Sulindac Sulindac Eflornithine Adverse Events of Special Interest Combination) N=57 N=56 N=56 Subjects (%) Subjects (%) Subjects (%) Anemia 1 (1.8) 5 (8.8) 2 (3.6) Myelosuppression 0 1 (1.8) 0 Thrombocytopenia 0 3 (5.3) 1 (1.8) Cardiovascul
Slide 25: Basis for FDA Complete Response Letter
Basis for FDA Complete Response Letter Clinical Single pivotal study efficacy was based on exploratory post-hoc analysis using a modified primary endpoint in a subgroup of the intent-to treat population o Asked to perform a new study focused on FAP patients with an intact lower- GI tract which s
Slide 26: Summary of Approach to Approval
Summary of Approach to Approval Strong Results in the Lower GI Focus on Lower GI: statistically significant p-values and hazard ratios for clinically meaningful surgical endpoints—emphasized by regulators—in Phase III pivotal trial Expected safety profile over 2-4 years of daily dosing in Phase
Slide 27: Polyamines & Immune Dysregulation
Polyamines & Immune Dysregulation Panbela Therapeutics 25
Slide 28: Role of Polyamines in Immune Dysregulation
Role of Polyamines in Immune Dysregulation Immune systems require multiple soluble and cellular components, including polyamines, for a normal immune function High levels of polyamines are present in tumor cells and in autoreactive B- and T-cells in autoimmune diseases Dysregulation of polyami
Slide 29: Role of Polyamines in Diffuse Large B Cell Lymphoma (DLBCL)
Role of Polyamines in Diffuse Large B Cell Lymphoma (DLBCL) MYC overexpression in relapsed/refractory DLBCL prior to CAR-T cell therapy negatively associated with durable response to CAR-T cell therapy. Polyamine metabolism upregulation through oncogenic MYC is a common metabolic irregularity in
Slide 30: Rationale for Eflornithine/anti-PD-1 Combination
Rationale for Eflornithine/anti-PD-1 Combination Targeting Ornithine decarboxylase (ODC) using eflornithine unmasks antitumor T cell immune response by weakening of tumor-induced immune suppression that is mediated by Myeloid- Derived Tumor Suppressor Cells (MDSCs). The addition of anti-PD-1 pre
Slide 31: CPP-1X-S
CPP-1X-S Panbela Therapeutics 29
Slide 32: Rationale for CPP-1X-S (Eflornithine Sachets) in STK11 Mutant NSCLC
Rationale for CPP-1X-S (Eflornithine Sachets) in STK11 Mutant NSCLC In preclinical tumor models, eflornithine treatment improves anti-PD-1 efficacy by: Increasing tumor-specific cytotoxic T-cell populations Increasing expression of PD-1 on tumor-associated CD8+ T cells ~10% of NSCLC cancers
Slide 33: STK11 Mutant NSCLC Investigator-Initiated Trial
STK11 Mutant NSCLC Investigator-Initiated Trial Collaborating with investigators at Moffitt Cancer Center on Phase I/II trial: “Targeting Ornithine Decarboxylase as an Immunotherapeutic Target in STK11 (LKB1) Pathway-Deficient Non-Small Cell Lung Cancer” Patient Population Phase I Phase II Stage I
Slide 34: Business Overview
Business Overview Panbela Therapeutics 32
Slide 35: Barriers to Entry – Flynpovi/CPP-1X
Barriers to Entry – Flynpovi/CPP-1X Orphan status (7 years exclusivity US; 10 years exclusivity EU) for CPP-1X ◦ Granted in US and EU for FAP ◦ Granted in US and EU for Neuroblastoma ◦ Granted in US for Gastric cancer and Pancreatic cancer Pharmaceutical Composition Patent ◦ Fixed dose combinati
Slide 36: Barriers to Entry – SBP-101
Barriers to Entry – SBP-101 Orphan status (7 for years exclusivity US; 10 years exclusivity EU) for SPB-101 ◦ Granted in US and EU for pancreatic cancer METHODS FOR PRODUCING (6S,15S)-3,8,13,18-TETRAAZAICOSANE-6,15-DIOL ◦ PCT application filed January 29, 2019 ◦ Granted in United States, India,
Slide 37: Summary of Milestones
Summary of Milestones 1H 2023 Open Phase I Ovarian Cancer Trial Open- Phase I NSCLC Trial Open- Neoadjuvant Pancreatic Cancer Trial Open – Phase II Type I onset Diabetes Trial Futility Analysis Phase III Colon Cancer Risk Reduction Trial (PACES) Publication of Phase I Type I early onset
Slide 38: Financial Position - Cash and Debt (unaudited)
Financial Position - Cash and Debt (unaudited) Cash and Debt Cash at 12/31/22 1,285,000 Estimated net proceeds public sale of equity via ATM facility through 1/20/23 1,592,000 Estimated net proceeds public sale of equity on 1/30/23 13,674,000 Proforma Cash Balance(1) 16,551,000 Debt 12/31/22 Current
Slide 39: Capital Stock (unaudited)
Capital Stock (unaudited) Panbela (1) Common Stock at 12/31/22 1,049,644 Shares sold via Company ATM through 1/20/23 440,830 Shares issued on 1/30/23 and Prefunded warrants exercised prior to 2/1/23 6,674,929 Shares issued in exchange for warrants through 3/31/23 7,923,913 Total Proforma Common stoc
Slide 40: Summary: Broad, late-stage de-risked pipeline opportunities
Summary: Unique Scientific Approach: Resetting dysregulation via polyamine pathway Broad, late-stage de-risked pipeline opportunities Multiple partnerships supporting development programs Significant market potential Multiple data readouts expected Experienced management team Panbela Therapeutics 38
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