Porphyrias: Pathophysiology and clinical management recommendations for hepatologists

Area of Science:

• Biochemistry
• Genetics
• Hepatology

Background:

• Porphyrias are a group of genetic diseases caused by enzyme dysfunction in heme biosynthesis.
• Heme is essential for numerous biological functions, with the liver being a major production site.
• Porphyrias are classified as erythropoietic or hepatic, based on the primary site of organ dysfunction.

Purpose of the Study:

• To review the liver's involvement in all types of porphyrias.
• To provide hepatologists with tools for recognizing and managing porphyrias.
• To emphasize the importance of considering porphyrias in unexplained liver disease.

Main Methods:

• Literature review of porphyria pathogenesis and clinical manifestations.
• Analysis of the liver's role in heme biosynthesis and disease pathology.
• Synthesis of clinical and diagnostic information relevant to hepatologists.

Main Results:

• All porphyrias, including those classified as erythropoietic, exhibit some degree of liver involvement.
• Hepatic dysfunction in porphyria can lead to severe clinical outcomes if overlooked.
• The liver is a key site for heme biosynthesis and a common target in porphyric diseases.

Conclusions:

• Hepatologists must consider porphyrias in the differential diagnosis of liver disease.
• A multidisciplinary approach including liver disease experts is essential for managing porphyrias.
• Early recognition and management of hepatic involvement in porphyria are critical for patient outcomes.