Differentiate autoimmune hepatitis type 1 and type 2 serologically.

Prepare for Liver Disease and Tumors Test with tailored flashcards and questions. Get detailed explanations and improve your knowledge. Ace the medical student exam!

Multiple Choice

Differentiate autoimmune hepatitis type 1 and type 2 serologically.

Autoimmune hepatitis subtypes have distinct antibody patterns that guide differentiation. Type 1 is most often associated with antibodies against nuclear or smooth muscle antigens, namely ANA and/or ASMA. Type 2 is defined by the presence of anti-LKM-1 antibodies. So, a pattern where ANA and/or ASMA are positive points to type 1, while anti-LKM-1 positivity points to type 2. Other patterns—such as anti-LKM-1 suggesting type 1, or ANA alone implying type 2, or AMA indicating another liver disease—do not fit the typical serology for these subtypes. This serologic distinction is the best basis for differentiation.

Autoimmune hepatitis subtypes have distinct antibody patterns that guide differentiation. Type 1 is most often associated with antibodies against nuclear or smooth muscle antigens, namely ANA and/or ASMA. Type 2 is defined by the presence of anti-LKM-1 antibodies. So, a pattern where ANA and/or ASMA are positive points to type 1, while anti-LKM-1 positivity points to type 2. Other patterns—such as anti-LKM-1 suggesting type 1, or ANA alone implying type 2, or AMA indicating another liver disease—do not fit the typical serology for these subtypes. This serologic distinction is the best basis for differentiation.

More practice questions