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Chemometric histopathology via coherent Raman imaging for precision medicine

Periodic Reporting for period 2 - CHARM (Chemometric histopathology via coherent Raman imaging for precision medicine)

Reporting period: 2023-05-01 to 2024-07-31

CHARM aims to develop a medical device based on high-speed, low-cost Raman digital imaging technology and artificial intelligence to transform cancer diagnosis and treatment.
CHARM addresses two limitations of digital pathology: first, the need for tissue staining, which is time-consuming and introduces variability between samples, and the inability to measure the tissue molecular composition, which can be crucial to determine tumor subtypes and grades. Our approach reduces the pathologist’s workload by avoiding staining and by including a prescreening performed by the AI agent. The pathologist is provided with a decision tree (allowing interpretability) and a diagnostic report that supports the differentiation between normal and tumor tissue and includes suggestions for cancer type and grade classification. The instrument will offer histopathologists a reliable, fast, and low-cost Clinical Decision Support System for cancer diagnosis and personalized cancer therapy.


Our aim is to develop a Class C (In-Vitro Diagnostic Regulation) medical device consisting of 1) a turnkey low-cost broadband Coherent Raman Scattering microscope (enabled by our patented graphene-based fiber laser technology); 2) an Artificial Intelligence model based on deep learning, statistics, and machine learning. The instrument will offer histopathologists a reliable, fast, and low-cost Clinical Decision Support System for cancer diagnosis and personalized cancer therapy.
Two products have been launched: the laser source called STRALE, has been commercialized in the second half of 2023 and the Coherent Raman Scattering microscope has been rebranded as CORAL. CORAL has been used to collect the first images from biopsies and also tested by first end-users in a dedicated workshop.

Furthermore, we collected a reference panel of samples from patients with head and neck cancer and several images have been acquired via CORAL. Thanks to this data, we have been able to develop an AI-based model that can virtually stain images to replicate the current appearance of samples used for diagnosis and the training of this model is currently ongoing to boost the results quality.
The CHARM technology will be capable of automatically analyzing unstained tissues, providing fast and accurate tumor identification (differentiating normal vs neoplastic tissues) with high accuracy and final tumor diagnosis prediction (differentiating and grading histologic subtypes), thus offering to the histopathologist a decision tree compatible with existing clinical protocols but with biomolecular-based objectivity and reduced time to result.

During CHARM, we will prove the feasibility of Coherent Raman Scattering microscopy for the diagnosis of a representative case: Head and Neck Cancer. When diagnosed early, head and neck cancers can be treated more easily and the chances of survival increase tremendously. However, currently, 2 in 3 of all head and neck cancer patients are diagnosed at an advanced stage. Head and Neck cancer can be used as a model for a larger variety of cancers characterized by field cancerization: esophageal, gastrointestinal, non-melanoma skin, non-small cell lung, and most of the breast cancers.
The Coherent Raman Scattering microscope developed by CHARM
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