Autoimmune Hepatitis: When First Line Therapy Does Not Work
Autoimmune Hepatitis: When First Line Therapy Does Not Work
John M. Vierling, M.D., F.A.C.P.
Professor of Medicine and Surgery Chief of Hepatology
Director of Advanced Liver Therapies Baylor College of Medicine St. Luke's Hospital System Houston, Texas
Autoimmune Hepatitis (AIH)
Definition: ? Syndrome of progressive hepatitis characterized
by loss of tolerance to hepatic autoantigens that results in:
? Hepatocellular necroinflammation ? Autoantibodies: non-organ, non-species-specific ? Hypergammaglobulinemia and/or IgG ? Non-pathognomic histopathology ? Responsiveness to immunosuppressive medications
Autoimmune Hepatitis Classification Based on Autoantibodies
Types AutoAbs
1 (95-97%)
ANA &/or SMA (f-actin ELISA)
SLA/LP pANCA
LC-1 ASGPR
2 (3-5%)
LKM1 SLA/LP LKM3
Autoimmune Hepatitis: Diagnosis Requires a Liver Biopsy
Characteristic Feature Interface Hepatitis
= Interface Hepatitis
Autoimmune Hepatitis
Revised Scoring System of the International Autoimmune Hepatitis Group*
Gender
Female
+2
HLA
DR3 or DR4
+1
AP:AST (or ALT)
>3
ratio
2.0 1.5-2.0 1.0-1.5
1:80
+3
Histological
Interface hepatitis
+3
LKM1 titers
1:80
+2
features
Plasmacytic
+1
1:40
+1
Rosettes
+1
15
Probable diagnosis 10-15
Alcohol
60 g/day
-2
Definite diagnosis
>17
Probable diagnosis 12-17
*Adapted from Alvarez F, Berg PA, Bianchi FB, et al. J. Hepatology 1999;31:929-938.
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