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Updated: Jan 2, 2026

Methods for Quantitative Detection of Antibody-induced Complement Activation on Red Blood Cells
Published on: January 29, 2014
Current and Future Approaches for Monitoring Responses to Anti-complement Therapeutics
Maedeh Mohebnasab1, Oskar Eriksson2, Barbro Persson2
1Division of Transplantation, Department of Surgery, University of Pennsylvania, Philadelphia, PA, United States.
Insights
Aberrations in complement system function are implicated in numerous diseases. This review details essential complement analyses for diagnosing conditions and monitoring patients on novel complement therapeutics.
Area of Science:
- Immunology
- Pathophysiology
- Clinical Diagnostics
Background:
- Complement system dysregulation is a key factor in diseases like infections, autoimmune disorders, inflammation, cancer, and transplantation complications.
- Current methods for studying the complement system involve quantifying components, activation products, and functional mechanisms.
Purpose of the Study:
- To review current indications, techniques, and interpretations of complement analyses.
- To provide guidance for monitoring patients undergoing complement-targeted therapies.
Main Methods:
- Review of existing literature on complement analysis techniques.
- Synthesis of data on clinical applications and interpretations of complement assays.
- Examples from various clinical disorders to illustrate practical use.
Main Results:
- Established complement assays are crucial for understanding disease pathogenesis.
- Emerging anti-complement therapeutics necessitate precise monitoring of complement activity and patient response.
- Interpretation of complement analyses aids in therapeutic efficacy and safety assessment.
Conclusions:
- Complement analysis is vital for diagnosing and managing a wide range of diseases.
- Standardized and advanced complement testing is essential for the successful clinical implementation of complement inhibitors.
Abstract:
Aberrations in complement system functions have been identified as either direct or indirect pathophysiological mechanisms in many diseases and pathological conditions, such as infections, autoimmune diseases, inflammation, malignancies, and allogeneic transplantation. Currently available techniques to study complement include quantification of (a) individual complement components, (b) complement activation products, and (c) molecular mechanisms/function. An emerging area of major interest in translational studies aims to study and monitor patients on complement regulatory drugs for efficacy as well as adverse events. This area is progressing rapidly with several anti-complement therapeutics under development, in clinical trials, or already in clinical use. In this review, we summarized the appropriate indications, techniques, and interpretations of basic complement analyses, exemplified by a number of clinical disorders.
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