Human anti-chimeric antibody

Human anti-chimeric antibody (HACA) is a type of antibody that the human immune system can produce in response to certain types of biological therapy. These antibodies can potentially reduce the effectiveness of the therapy and cause side effects.

Overview

Chimeric antibodies are a type of monoclonal antibody that are produced in the lab for use in certain types of cancer treatment. They are called "chimeric" because they are made by combining genetic material from two different species - usually a mouse and a human. The human immune system can sometimes recognize these antibodies as foreign and produce its own antibodies against them, known as human anti-chimeric antibodies (HACA).

Impact on Treatment

The production of HACA can potentially reduce the effectiveness of chimeric antibody therapy. This is because the HACA can bind to the chimeric antibodies and prevent them from binding to their intended target. In addition, the immune response triggered by the production of HACA can cause side effects such as allergic reactions and infusion reactions.

Detection and Management

The presence of HACA can be detected through a blood test. If a patient is found to have high levels of HACA, their doctor may need to adjust their treatment plan. This could involve switching to a different type of antibody therapy, such as a fully human or humanized antibody, which are less likely to trigger an immune response.

See Also

• Monoclonal antibody
• Biological therapy
• Cancer treatment
• Allergic reactions
• Infusion reactions