Portuguese Consensus on Acute Porphyrias: Diagnosis, Treatment, Monitoring and Patient Referral


  • Luís Brito Avô Serviço de Medicina Interna. Hospital CUF Tejo. Lisboa; Unidade de Doenças Raras. Hospital CUF Tejo. Lisboa; Nucleo de Estudos de Doenças Raras da Sociedade Portuguesa de Medicina Interna. Lisboa. https://orcid.org/0009-0006-5534-6553
  • Luísa Pereira Nucleo de Estudos de Doenças Raras da Sociedade Portuguesa de Medicina Interna. Lisboa; Unidade de Cuidados Paliativos. Hospital CUF Tejo. Lisboa. https://orcid.org/0000-0002-2894-0972
  • Anabela Oliveira Serviço de Medicina I. Centro de Referência de Doenças Hereditárias do Metabolismo. Centro Hospitalar Universitário Lisboa Norte. Lisboa. https://orcid.org/0000-0002-0423-8900
  • Filipa Ferreira Unidade de Rastreio Neonatal, Metabolismo e Genética. Departamento de Genética Humana. Instituto Nacional de Saúde Doutor Ricardo Jorge. Porto. https://orcid.org/0000-0001-7904-5508
  • Paulo Filipe Unidade de Investigação de Dermatologia. Instituto de Medicina Molecular João Lobo Antunes. Lisboa. https://orcid.org/0000-0001-6917-527X
  • Inês Coelho Rodrigues Serviço de Gastrenterologia. Centro Hospitalar e Universitário de Lisboa Norte. Lisboa. https://orcid.org/0000-0002-7855-501X
  • Eduarda Couto Departamento de Medicina Interna. Serviço de Hematologia Clínica. Centro Hospitalar Póvoa de Varzim - Vila do Conde. Póvoa de Varzim. https://orcid.org/0000-0003-2092-0325
  • Fátima Ferreira Serviço de Hematologia Clínica. Centro Hospitalar e Universitário de São João. Porto. https://orcid.org/0000-0003-2984-8446
  • André Airosa Pardal Serviço de Hematologia Clínica. Centro Hospitalar Universitário de São João. Porto. https://orcid.org/0009-0003-7016-1643
  • Pedro Morgado Instituto de Investigação em Ciências da Vida e Saúde. Escola de Medicina. Universidade do Minho. Braga; Laboratório Associado do Governo Português ICVS/3B’s. Braga/Guimarães; Serviço de Psiquiatria. Hospital de Braga. Braga. https://orcid.org/0000-0003-3880-3258
  • Sónia Moreira Nucleo de Estudos de Doenças Raras da Sociedade Portuguesa de Medicina Interna. Lisboa; Serviço de Medicina Interna. Centro de Referência de Doenças Hereditárias do Metabolismo. Centro Hospitalar e Universitário de Coimbra. Coimbra; Faculdade de Medicina. Universidade de Coimbra. Coimbra.  https://orcid.org/0000-0003-3363-0589




Consensus, Porphyria, Acute Intermittent/diagnosis, Porphyria, Acute Intermittent/therapy, Porphyrias/diagnosis, Porphyrias/therapy, Portugal, Referral and Consultation


Acute porphyrias are a group of rare genetic metabolic disorders, caused by a defect in one of the enzymes involved in the heme biosynthesis, which results in an abnormally high accumulation of toxic intermediates. Acute porphyrias are characterized by potentially life-threatening attacks and, for some patients, by chronic manifestations that negatively impact daily functioning and quality of life. Clinical manifestations include a nonspecific set of gastrointestinal, neuropsychiatric, and/or cutaneous symptoms. Effective diagnostic methods are widely available, but due to their clinical heterogeneity and non-specificity, many years often elapse from symptom onset to diagnosis of acute porphyrias, delaying the treatment and increasing morbidity. Therefore, increased awareness of acute porphyrias among healthcare professionals is paramount to reducing disease burden. Treatment of acute porphyrias is centered on eliminating the potential precipitants, symptomatic treatment, and suppressing the hepatic heme pathway, through the administration of hemin or givosiran. Moreover, properly monitoring patients with acute porphyrias and their relatives is fundamental to preventing acute attacks, hospitalization, and long-term complications. Considering this, a multidisciplinary panel elaborated a consensus paper, aiming to provide guidance for an efficient and timely diagnosis of acute porphyrias, and evidence-based recommendations for treating and monitoring patients and their families in Portugal. To this end, all authors exhaustively reviewed and discussed the current scientific evidence on acute porphyrias available in the literature, between November 2022 and May 2023.


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How to Cite

Brito Avô L, Pereira L, Oliveira A, Ferreira F, Filipe P, Coelho Rodrigues I, Couto E, Ferreira F, Airosa Pardal A, Morgado P, Moreira S. Portuguese Consensus on Acute Porphyrias: Diagnosis, Treatment, Monitoring and Patient Referral. Acta Med Port [Internet]. 2023 Nov. 2 [cited 2024 May 18];36(11):753-64. Available from: https://www.actamedicaportuguesa.com/revista/index.php/amp/article/view/20323