Biomarker Combinations for Rapid Infection Type Differentiation
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Solution Overview
Problem
Current diagnostic methods for differentiating between bacterial and viral infections are inadequate, leading to misprescription of antibiotics, with existing technologies lacking accuracy, speed, and applicability to inaccessible infection sites, resulting in significant health and financial consequences.
Innovation Solution
A method involving the measurement of specific biological determinants, such as NGAL, neopterin, and osteopontin, with mathematical functions to compute scores for infection type differentiation, and a kit comprising reagents to detect these determinants, enabling rapid and accurate differentiation between bacterial, viral, and mixed infections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If current diagnostic methods (culture, PCR, immunoassays) are used to differentiate bacterial and viral infections, then diagnostic coverage is achieved, but diagnostic accuracy is poor with low sensitivity or specificity
Solution Approach 1:
The patent combines multiple biomarkers (CRP, procalcitonin, IP-10, NGAL, neopterin, osteopontin) into a single diagnostic system that evaluates their collective patterns. This merging approach allows the system to achieve both high diagnostic accuracy and reliability by considering multiple indicators simultaneously rather than relying on single tests with limited sensitivity or specificity.
Solution Approach 2:
The diagnostic system is designed to universally detect and differentiate various types of infections (bacterial, viral, mixed) using a single multi-functional platform that measures multiple biomarkers. This universal approach enables the system to maintain high accuracy across different infection types while ensuring reliable detection through redundant measurement pathways.
2Productivity
If current diagnostic methods are used, then infection detection is possible, but the process requires hours to days
Solution Approach 1:
The system measures multiple biomarkers simultaneously in a single assay run, performing preliminary detection of infection type before final diagnosis is made. This preliminary multi-parameter measurement approach enables rapid initial assessment within minutes, eliminating the sequential testing process that causes delays in traditional methods.
Solution Approach 2:
The patent replaces traditional mechanical/cultural methods (which require hours to days for bacterial culture growth) with biomarker measurement technology that provides results within minutes. This substitution of measurement mechanism dramatically reduces diagnosis time while maintaining or improving diagnostic accuracy.
3Adaptability or versatility
If current diagnostic methods are used, then pathogen detection is attempted, but they fail when the pathogen is inaccessible (e.g., sinusitis, pneumonia, otitis-media)
Solution Approach 1:
The system uses biomarkers (CRP, procalcitonin, IP-10, NGAL, neopterin, osteopontin) as intermediary indicators that reflect the host's immune response to infection rather than directly detecting the pathogen itself. These biomarkers are systemically present in blood and other accessible fluids, serving as reliable mediators that indicate infection type and location even when the actual pathogen is inaccessible for direct sampling.
Solution Approach 2:
The patent shifts the detection dimension from direct pathogen detection (spatial dimension requiring access to infection site) to host response biomarker detection (systemic dimension accessible through blood draw). This dimensional change allows the system to maintain high detection precision for inaccessible infections by measuring the body's systemic response rather than attempting to access the localized pathogen.
4Ease of operation
If antibiotics are prescribed without accurate diagnosis, then treatment is provided, but antibiotic misuse occurs leading to resistance and side effects
Solution Approach 1:
The diagnostic system provides immediate feedback on infection type (bacterial, viral, or mixed) based on biomarker patterns, enabling physicians to make informed antibiotic prescribing decisions. This feedback mechanism ensures antibiotics are prescribed only when bacterial infection is confirmed, preventing misuse while maintaining ease of treatment availability through clear diagnostic guidance.
Solution Approach 2:
The system performs preliminary identification of infection type before antibiotic prescription, taking anti-action against potential misuse by pre-determining whether antibiotics are actually needed. This preliminary classification prevents unnecessary antibiotic exposure and the associated harmful effects while maintaining ready availability of treatment when genuinely required.
Data Source
AI summary
A method of determining an infection type in a subject is disclosed. The method comprises measuring the concentration of a first determinant selected from the group consisting of the determinants which are set forth in Table 1 and a second determinant selected from the group of the determinants which are set forth in Table 2 in a subject derived sample, wherein the concentration is indicative of the infection type.