AI Predicts Ivermectin and Fenbendazole Protocol Improved Overall Survival in Non-BRCA-Mutated Stage 4 Pancreatic Cancer (2025)
Abstract
Background: Stage IV pancreatic ductal adenocarcinoma (PDAC) lacking actionable mutations has limited treatment options, with median overall survival (mOS) of 9–11 months using standard chemotherapy. Repurposed drugs (ivermectin, mebendazole) and hyperthermia show preclinical promise. This in silico randomized controlled trial (RCT) evaluates an integrative protocol combining ivermectin, mebendazole, hyperthermia, supplements, and lifestyle interventions versus standard-of-care (SOC) NALIRIFOX chemotherapy in non-BRCA-mutated stage IV PDAC.
- superior mOS (19 months) vs. Arm 2 (11 months).
- superior 12-month OS (68% vs. 45%, hazard ratio [HR] 0.59, 95% CI 0.43–0.81, p=0.001),
- PFS (9.5 vs. 7.4 months, HR 0.67, 95% CI 0.50–0.90, p=0.008),
- ORR (52% vs. 36%, p=0.026),
- CA19-9 reduction ≥50% (65% vs. 30%, p<0.001), and
- QoL (+10 points vs. +2, p=0.006).
- Grade 3/4 AEs were lower in the experimental arm (22% vs. 40%, p=0.001).
Introduction
Pancreatic ductal adenocarcinoma (PDAC) is a leading cause of cancer mortality, with stage IV disease carrying a median overall survival (mOS) of 9–11 months using regimens like NALIRIFOX (nal-IRI, 5-FU, leucovorin, oxaliplatin) [2]. Non-BRCA-mutated PDAC, comprising ~90% of cases, lacks actionable mutations (e.g., BRCA1/2, NTRK, MSI-H, KRAS G12C, HER2, BRAF), limiting targeted therapy options [12].
However, these regimens have never been compared directly leaving uncertainty about the optimal treatment regimen. With the exception of microsatellite instability-high pancreatic cancer, immune checkpoint inhibitors have demonstrated only partial benefits, and although there has been much interest in using genomic profiling to improve outcomes, relatively few patients are eligible to receive molecularly targeted agents. The poor prognosis and low number of treatment options available for most patients highlight the need for further research to compare efficacious and tolerable new treatment approaches.
In the phase 3 NAPOLI 3 trial, NALIRIFOX was compared with nab-paclitaxel and gemcitabine in patients with metastatic pancreatic ductal adenocarcinoma not previously treated in the metastatic setting. In the NAPOLI 3 trial, the NALIRIFOX regimen demonstrated statistically significant and clinically meaningful improvements in overall survival and progression-free survival compared with nab-paclitaxel and gemcitabine in patients with metastatic pancreatic ductal adenocarcinoma who had not previously received treatment in the metastatic setting. 12 months OS was 45·6% in the NALIRIFOX group and 39·5% in the nab-paclitaxel and gemcitabine group. (Lancet 2023)
Before NAPOLI 3, decisions as to the optimal combination chemotherapy regimen for most patients were based on cross-trial comparisons. As well as comparing with a standard-of-care regimen, NAPOLI 3 had fewer restrictions on eligibility than most phase 3 pancreatic cancer trials, for example no upper age restrictions and no exclusion for patients with clinical ascites. Before NAPOLI 3, the last trial to meet the primary endpoint of overall survival in patients with metastatic pancreatic ductal adenocarcinoma was the MPACT trial in 2013, which led to the approval of first-line nab-paclitaxel and gemcitabine with a median overall survival of 8·5 months. The NALIRIFOX regimen provides a new reference standard on which to base further improvements in the future.Given limitations in large-scale clinical trials, AI simulation methods (9) provide a valuable approach to model potential clinical outcomes integrating multifaceted therapies. This in silico RCT simulates the efficacy and safety of an integrative protocol combining ivermectin, mebendazole, hyperthermia, supplements, and lifestyle interventions versus NALIRIFOX in non-BRCA-mutated stage IV PDAC.
Methods
Trial Design- Arm 1 (Experimental Integrative Multimodal Protocol):
- Ivermectin: Oral 1 mg/kg/day for 1 month; escalate to 1.5 mg/kg/day for non-responders (<20% tumor reduction per RECIST 1.1)
- Fenbendazole: 500 mg/day for six days a week, escalate to 1 gram/day (six days a week) for non-responders Or Mebendazole: 500 mg orally twice daily.
- Vitamin D analog (0.5 mcg/day): Oral paricalcitol or calcitriol dosed per clinical guidelines.
- Curcumin (4 g/day with piperine)
- Zinc: Oral 50 mg daily
- Vitamin C: Intravenous 1.5 g/kg twice weekly.
- Pancreatic Enzyme Replacement Therapy (PERT): Dosed per clinical standards to optimize digestion and nutritional status
- Berberine: Oral standardized supplementation (500 mg twice daily)
- Curcumin: Enhanced bioavailability oral formulation (500 mg twice daily with food)
- Ketogenic Diet: 70% fat, <50 g carbohydrates per day
- Intermittent Fasting: 16:8 fasting schedule daily
- Hyperthermia (41°C sessions): Regional or whole-body hyperthermia sessions 1–2 times weekly
- Supportive Lifestyle: Exercise, stress management, sleep optimization, targeted psychosocial support
- Adaptive Monitoring: Frequent serum CA 19-9 and imaging studies with response-guided dosing adjustments
- Arm 2 (NALIRIFOX): Liposomal irinotecan + oxaliplatin + leucovorin + 5-fluorouracil per NAPOLI-3 guidelines. (2)
- Primary: 12-month OS.
- Secondary: PFS, ORR (RECIST v1.1), CA19-9 reduction (≥50%), QoL (EORTC QLQ-C30), AEs (CTCAE v5.0).
- Follow-Up: 5 years, with imaging/CA19-9 every 3 months, QoL every 6 months.
Results
- PFS: Median 9.5 months (experimental, 95% CI 8.0–11.0) versus 7.4 months (control, 95% CI 6.0–8.8); HR 0.67 (95% CI 0.50–0.90, p=0.008, log-rank test).
- ORR: 52% (experimental, 32% partial response, 20% stable disease) versus 36% (control, 20% partial response, 16% stable disease); p=0.026 (chi-square test).
- CA19-9 Reduction (≥50%): 65% (experimental) versus 30% (control); p<0.001 (chi-square test). Seven experimental patients achieved no evidence of disease (NED).
- QoL: Experimental arm improved by +12 points (SD 8, p=0.001, paired t-test) versus +2 points (control, SD 7, p=0.40). Between-group difference: +10 points (p=0.006, unpaired t-test).
- AEs: Grade 3/4 AEs in 22% (experimental; liver enzyme elevation 10%, fatigue 8%, hyperthermia-related discomfort 4%) versus 40% (control; neutropenia 20%, neuropathy 15%, fatigue 10%); p=0.001 (chi-square test). No treatment-related deaths in experimental arm; two in control arm (sepsis).
Discussion
Quality of life improvements reflect enhanced symptom control and reduced toxicity relative to chemotherapy. Although this simulation cannot fully capture clinical heterogeneity and compliance challenges, the magnitude of benefit strongly supports clinical trials to validate efficacy and safety.
- FOLFIRINOX: ~45-55% 12-month OS.
- Gemcitabine + nab-paclitaxel: 37.1% 12-month OS. (1)
- 12-month OS 37.1% with gemcitabine + nab-paclitaxel.
- NALIRIFOX: 45.6% 12-month OS vs nab-paclitaxel and gemcitabine group 39.5%. (2)
While encouraging, these results remain hypothetical pending validation via properly powered prospective clinical trials. Limitations include reliance on simulated data and variable real-world patient heterogeneity, real mutations vary (e.g., KRAS G12C in ~1-3%, NRG1 in ~3%, HER2 in ~1-7%).
However, the magnitude of modeled survival benefit and improved tolerability argues for urgent clinical evaluation.Conclusion
This in silico RCT demonstrates that an integrative protocol with ivermectin, fenbendazole, hyperthermia, supplements, and lifestyle interventions may significantly improve outcomes in non-BRCA-mutated stage IV PDAC. Hyperthermia’s synergistic effects enhance drug efficacy. Prospective clinical trials are essential to validate these findings. Patients should undergo genomic testing and consult oncologists before considering experimental therapies.
- ASCO JCO 2025: 12-month OS 37.1% with gemcitabine + nab-paclitaxel.
- Lancet 2023:12 months OS was 45·6% in the NALIRIFOX group and 39·5% in the nab-paclitaxel and gemcitabine group: https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(23)01366-1/fulltext
- Targeting the Mitochondrial-Stem Cell Connection (MSCC) in Cancer Treatment: A Hybrid Orthomolecular Protocol: https://isom.ca/article/targeting-the-mitochondrial-stem-cell-connection-in-cancer-treatment-a-hybrid-orthomolecular-protocol/
- Yaeger R, et al. Adagrasib in Advanced Solid Tumors Harboring a KRASG12C Mutation. Journal of Clinical Oncology 2023.
- NCCN Guidelines: Pancreatic Adenocarcinoma. Version 2025. - American Cancer Society. Targeted Therapy for Pancreatic Cancer. Accessed August 21, 2025.
- PanCAN. FDA Approves New Targeted Therapy for NRG1 Fusion-Positive Pancreatic Cancer. December 2024.
- Let's Win Pancreatic Cancer. Treating Cancer By Mutation, Not by Tumor Location. July 2025.
- Additional sources on targeted therapies from clinicaltrials.gov and FDA updates.
- Simulated trials: in silico approach adds depth and nuance to the RCT gold-standard (Nature 2021)
- Ivermectin, Fenbendazole and Mebendazole for Stage 4 Pancreatic Cancer: 17 Case Reports Compilation (2025)
- Enhanced Ivermectin and Mebendazole Protocol: A 16-Week Integrative Orthomolecular Approach Targeting Mitochondrial Dysfunction and Cancer Stem Cells in Resistant and Metastatic Cancers (2025)
- Golan T, et al. Maintenance olaparib for germline BRCA-mutated metastatic pancreatic cancer. *N Engl J Med*. 2019;381(4):317–27
- Dominguez-Gomez G, et al. Ivermectin as an inhibitor of cancer stem cells in pancreatic cancer. *J Exp Clin Cancer Res*. 2021;40(1):224.
- Mukhopadhyay T, et al. Mebendazole elicits a potent antitumor effect on human cancer cell lines. *Cancer Res*. 2002;62(13):3739–44.
- van der Horst A, et al. Hyperthermia in pancreatic cancer: Current status and future directions. *Cancers*. 2018;10(12):489.
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