[The hepatic porphyrias: experience with 105 cases]

Area of Science:

• Biochemistry
• Genetics
• Metabolic Disorders

Context:

• Hepatic porphyrias are rare metabolic syndromes stemming from enzyme deficiencies in heme biosynthesis.
• This study analyzed 105 patients diagnosed between 1974 and 1991, detailing various types and their prevalence.

Purpose:

• To classify and describe the clinical characteristics and outcomes of hepatic porphyria patients.
• To investigate the demographics, diagnostic timelines, and treatment responses for different types of hepatic porphyria.

Summary:

• Porphyria cutanea tarda (42%) was the most frequent type, more common in males, while porphyria variegata (21%) was more prevalent in females.
• Diagnosis typically occurred in the third decade, with variations by type. 29 patients experienced porphyric crises triggered by factors like pregnancy and hormone administration.
• Severe crises responded well to Hematin treatment, and venipuncture achieved 95% success in treating porphyria cutanea tarda.

Impact:

• Highlights the increasing recognition and successful management of hepatic porphyrias.
• Provides valuable data on the epidemiology and clinical presentation of these rare metabolic disorders.
• Informs clinical practice regarding diagnosis, management strategies, and treatment efficacy for various porphyria types.