Measures to overcome HAMA interferences in immunoassays

Area of Science:

• Clinical Chemistry
• Immunology
• Biotechnology

Background:

• Human anti-mouse antibodies (HAMA) are a known issue in immunoassays.
• HAMA interference can lead to falsely elevated or depressed test results.
• Serum tumor marker assays are particularly susceptible to HAMA interference.

Purpose of the Study:

• To highlight the significance of HAMA interference in immunochemical assays.
• To emphasize the need for addressing HAMA during assay development.
• To discuss strategies for mitigating HAMA interference.

Main Methods:

• Review of existing literature on HAMA interference.
• Analysis of assay formats and their susceptibility to HAMA.
• Discussion of sample pretreatment methods and reagent optimization.

Main Results:

• HAMA interference is a factual problem, not a debatable incidence.
• The degree of interference varies significantly between assays.
• Certain HAMA types, like anti-idiotypic antibodies, pose a greater challenge.

Conclusions:

• HAMA interference must be addressed in the development of immunochemical assays, especially for serum tumor markers.
• Strategies include sample pretreatment and assay reagent optimization.
• No current method guarantees complete elimination of HAMA effects.