Target intelligence / Profile preview

Alanine Aminotransferase (ALT)

Target
ALT
Molecular classification
Enzyme, Aminotransferase
01

Overview

Alanine aminotransferase (ALT) is an enzyme primarily found in the liver and, to a lesser extent, in other tissues. It plays a crucial role in amino acid metabolism by catalyzing the reversible transfer of an amino group from L-alanine to α-ketoglutarate. Serum ALT measurement is widely used as a biomarker for liver health, with elevated levels indicating hepatocellular injury or damage.

Other names
Alanine transaminaseSGPTGPTSerum glutamic-pyruvic transaminaseGlutamate pyruvate transaminase
02

Mechanism of action

N/A

03

Biological functions

Amino acid metabolismCatalysisAlanine cycle
04

Disease associations

Liver diseaseHepatocellular injuryAlcohol-induced liver injuryNon-alcoholic fatty liver disease (NAFLD/MASLD)Non-alcoholic steatohepatitis (NASH)Viral hepatitis B/CAutoimmune hepatitisDrug-induced liver injuryHemochromatosisVascular diseases affecting the liverGenetic disorders impacting hepatic function
05

Safety considerations

Elevated ALT is sensitive but not specific, requiring further diagnostic workupElevated ALT indicates hepatocellular injury but does not specify the cause or severity of disease
06

Interacting drugs

Hepatotoxic medications

2 more in the full profile.

07

Biomarkers

Serum ALT levelsAST/ALT ratio

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