Breathomics

01Overview and value chain

Markers: [EC: In Vitro Diagnostic Medical Devices Regulation (IVDR) | OECD: 3.3 Health | Regulator: FDA (USA), EMA (EU), NMPA (China)]

Breathomics is a revolutionary segment of preventive medicine and non-invasive biomonitoring based on the analysis of volatile organic compounds (VOCs) in exhaled human breath. Exhaled air contains over 3000 unique VOCs produced by cellular metabolism, which diffuse from blood into the lungs. Using ultra-sensitive platforms like proton transfer reaction mass spectrometry (PTR-MS) and gas chromatography with ion mobility spectrometry (GC-IMS), it allows real-time detection at parts-per-trillion (ppt) concentrations. This instantaneous analysis enables annual cancer screening, continuous chemotherapy monitoring, and rapid respiratory infection detection.

The key directions of breath diagnostics are:

1. Cancer Screening: Detection of methylated alkanes and oxidative stress products for early lung and breast cancer screening.
2. Infectious Disease Diagnostics: Identification of bacterial pathogens such as tuberculosis and Helicobacter pylori using specific breathprints.
3. Metabolic Disease Monitoring: Continuous tracking of ketones (acetone) for diabetes management and lipolysis assessment.
4. Cardiopulmonary Assessment: Real-time monitoring of exhaled nitric oxide (FeNO) for asthma and heart failure evaluation.

Sectoral value chain

[Sample Collection] ──> [VOC Preconcentration] ──> [Desorption] ──> [Chromatographic Separation]
                                                                        │
                                                                (Fractionation)
                                                                        │
                                                                        ▼
[Clinical Report] <─── [AI Biomarker Analysis] <─── [High-Resolution Mass Spectrometry]

Value chain levels

Cross-cutting technologies of the sector:

• Proton Transfer Reaction Mass Spectrometry (PTR-MS): Real-time ultra-sensitive detection of VOCs at ppt levels without destroying labile molecules.
• Alveolar Sampling: Masks selectively discarding dead-space air to collect gases from deep lungs in equilibrium with systemic blood.
• Machine Learning Pattern Recognition: Multidimensional statistical analysis (PLS-DA, SVM) correcting baseline drift and calculating tumor risk probabilities.

02US

The US leads in developing commercial breath screening platforms for clinical practice, heavily backed by NIH grants.

Clinical implementation, FDA approvals, AI patenting

• Commercial Platforms: Companies like Breath Diagnostics and Menssana Research focus on portable sensory systems and proprietary VOC cartridges.
• FDA Approvals: Specialized tests approved for H. pylori detection and nitric oxide (FeNO) monitoring in asthma.
• AI Algorithms: Aggressive patenting of machine learning models recognizing complex volatile multidimensional patterns.

03CN

China integrates breath analysis into national mass screening programs, focusing on industrial regions.

Mass screening, portable GC-IMS, sovereign databases

• Primary Care Devices: Dalian Institute of Chemical Physics (CAS) develops high-efficiency portable GC-IMS for lung cancer screening in high-density areas.
• AI Cloud Integration: Chinese manufacturers use AI to process massive datasets from routine health checkups.
• Sovereign Biomarker Base: Ministry of Health funding targets a national cloud database of VOC biomarkers for healthy and diseased populations.

04EU

The EU holds global leadership in standardizing exhaled air sampling and coordinating large-scale clinical trials.

Standardization, Breath Biopsy, clinical consortia

• Standardization: UK-based Owlstone Medical’s Breath Biopsy platform acts as the global gold standard for clinical research.
• Horizon Europe Projects: The PAN Cancer Breath Trial coordinates sample collection across dozens of oncology centers in the UK, Germany, and the Netherlands.
• Component Requirements: High European regulatory standards for absorbent cartridge purity stimulate advanced microelectronics and gas filtration.

05Leading companies and research institutes

06Tech stack and innovations

The technological stack relies on advanced sorbents, ultra-sensitive mass spectrometry, and machine learning.

1. Molecular Biomarkers and Sorbents:
   • Detects endogenous alkanes (pentane, ethane) as lipid peroxidation indicators and methylated alkanes as tumor markers.
   • Utilizes high-capacity porous polymers like Tenax TA and Carboxen for stable retention without chemical degradation.
2. Analytical Instrumentation:
   • IONICON PTR-TOF systems allow real-time analysis at parts-per-trillion sensitivity.
   • GC-MS systems coupled with thermal desorbers separate complex VOC mixtures with high resolution.
3. Bioinformatics and Pattern Analysis:
   • R and Python libraries (Chemometrics, Scikit-Learn) process multidimensional VOC data using PLS-DA and Support Vector Machines.
   • Algorithms correct baseline drift, align peaks, and calculate disease risk scores based on trained multivariate models.

07Value chains and production pipelines

Industrial pipeline of VOC diagnostic screening (ISO 20916)

┌───────────────────────────┐      ┌───────────────────────────┐
│ 1. Alveolar Sampling      │ ───> │ 2. VOC Concentration      │
└───────────────────────────┘      └───────────────────────────┘
                                                 │
                                                 ▼
┌───────────────────────────┐      ┌───────────────────────────┐
│ 4. Thermal Desorption     │ <─── │ 3. Cold Logistics         │
└───────────────────────────┘      └───────────────────────────┘
              │
              ▼
┌───────────────────────────┐      ┌───────────────────────────┐
│ 5. Separation & Detection │ ───> │ 6. AI Pattern Recognition │
└───────────────────────────┘      └───────────────────────────┘

Stage 1: Alveolar Sampling

The patient breathes normally through a disposable mask. The device monitors carbon dioxide levels to bypass dead-space air, collecting only the true alveolar fraction representing up to 3000 distinct VOCs.

Stage 2: VOC Concentration

Exhaled flow passes through a cartridge filled with hydrophobic sorbents (Tenax TA or Carbotrap). The polymer strongly retains organic compounds while letting water vapor and nitrogen pass.

Stage 3: Cold Logistics

The cartridge is hermetically sealed with metallic caps and transported to a certified reference laboratory under strict temperature control to prevent VOC degradation.

Stage 4: Thermal Desorption

In the lab, the cartridge is heated to 300°C inside a thermal desorber. The released VOCs are carried by ultra-pure helium, frozen in a cold trap, and injected as a narrow pulse into the system.

Stage 5: Separation & Detection

The gas mixture is separated in a capillary gas chromatography column and fed into a high-resolution quadrupole or time-of-flight mass spectrometer to detect molecules at parts-per-trillion levels.

Stage 6: AI Pattern Recognition

An integrated AI application performs baseline drift correction, identifies biomarker peaks, and calculates tumor risk probability using a trained multivariate model, generating the final report.