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Helitope® - for gastric cancer risk

The First Peptide Blood Test to Identify High-Risk H. pylori Infections

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We identify which H. pylori infections carry cancer-causing CagA proteins.

Our proprietary diagnostic detects antibodies to CagA proteins, distinguishing oncogenic from benign H. pylori strains. Outside East Asia, approximately 50% of H. pylori strains produce CagA – but current tests can't tell the difference. This precision assay enables targeted intervention where its needed most.

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Asymptomatic H. pylori is common worldwide—quiet, persistent, including high-risk, cancer-linked strains. Symptomatic cases tend to get treated; the silent carriers don’t, allowing ongoing gastric damage. When gastric cancer finally declares itself, it’s often late-stage and with high mortality.

The Precision Medicine Opportunity

Current Screening Fails Patients and Healthcare Systems

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Half the world's population carries H. pylori, but it is the CagA variants that drive gastric cancer. Current tests can't distinguish CagA-positive from CagA-negative infections.

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The result: Either we treat all H. pylori blindly, including those with minimal cancer risk, or we miss the high-risk infections that cause over 700,000 annual gastric cancer deaths.

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Helitope changes this equation. By identifying CagA-positive infections specifically, healthcare systems can:

  • Target the infections that actually increase cancer risk

  • Reduce unnecessary treatment of low-risk infections

  • Save treatment costs through precision intervention

  • Reduce global antibiotic burden and AMR risk

  • Transform gastric cancer from the third deadliest cancer to a preventable disease

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How Helitope® Works

Epitope-Level Precision Beats Whole-Protein Approaches

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Standard H. pylori tests detect infection presence. Helitope detects cancer risk.

 

Our peptide-ELISA platform identifies antibodies specific to oncogenic CagA epitopes – protein regions that differentiate cancer-associated bacterial strains from benign ones. 

 

We've validated these markers across:

  • 1,200+ patient samples from multiple cohorts

  • >95% specificity for CagA variant identification

  • 10-fold better signal-to-noise than conventional peptide assays

 

By combining the specificity of peptides with our patent-pending peptide augmentation, we have solved the historical sensitivity and specificity problems that have limited serology diagnostics.

Commercial Readiness

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Development Complete

  • Epitope discovery and validation (2018-2021)

  • Clinical marker verification across diverse populations

  • Assay optimisation for commercial performance

  • Regulatory pathway defined for key markets

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Manufacturing Established

  • Partnership with Biosensis Pty Ltd

  • Prototype production run completed June 2025

  • Scalable processes validated

  • First RUO kit production planned Q4, 2025

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IP Protected

  • Core patent granted in 20 countries including US, China, Japan, EU

  • Peptide augmentation technology (AU 2025902422) filed

  • Freedom to operate confirmed in major markets

  • Strategic patent portfolio continues expanding

Why Now?

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Regulatory Momentum

  • WHO lists H. pylori as Group 1 carcinogen requiring intervention

  • Asian health ministries prioritising gastric cancer prevention

  • Precision medicine initiatives demanding better risk stratification

 

Healthcare Economics

  • Aging populations increasing cancer burden

  • Healthcare systems seeking prevention over treatment

  • Value-based care rewarding early intervention

 

Technical Readiness

  • Our peptide platform solves the serology accuracy barrier

  • Manufacturing costs enable population-wide screening

  • ELISA format ensures global laboratory compatibility

Questions?

Get in touch, we'd love to hear from you.

  • LinkedIn

Thanks. We'll talk soon.

Biotome Pty Ltd

Harry Perkins Institute of Medical Research

6 Verdun Street, Nedlands, WA, Australia

+61 479 072 369

©2026 by Biotome Pty Ltd.   Privacy Policy

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