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Occurrence of Malignant Tumours in the Acute Hepatic Porphyrias

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Part of the book series: JIMD Reports ((JIMD,volume 22))

Abstract

The porphyrias are a group of inherited metabolic diseases resulting from enzymatic deficiencies of specific haem biosynthetic enzymes. They can be classified as primarily acute and non-acute types. Clinically, the acute hepatic porphyrias (AHPs) are characterised by acute neurovisceral attacks. Patients with AHP may be at increased risk for development of hepatocellular carcinoma (HCC). However, systematic studies on the occurrence of other malignancies in patients with the AHPs have not been performed to date. Here, we studied the development of HCC and distinct malignant tumours in patients with the AHPs registered in a single European porphyria specialist centre. A questionnaire was designed and sent to all individuals (n = 122) diagnosed between 1970 and 2012 of whom a valid address was available (n = 82), requesting information on their personal and family history of cancer. Statistical analysis was performed to calculate incidence, prevalence and relative risk of HCC. To calculate confidence intervals, a Poisson distribution was assumed. Forty-nine patients (59.8%) returned a completed questionnaire. Overall, HCC was diagnosed in one female (2.1%), and the remaining patients reported on six distinct malignancies. We were able to confirm that HCC is an important complication in AHP. The patients in our cohort had an approximately 35-fold increased risk of developing HCC, similar to observations in other European countries. In addition, we detected colon, breast, uterine and thyroid cancer as well as lymphoma and a liver metastasis in patients with AHP. However, considering the small number of tumours and patients studied here, the data should be interpreted with caution, and further studies on cancer occurrence in AHP patients will require a multicentre setting.

Competing interests: None declared

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Abbreviations

ADDP:

δ-Aminolaevulinic acid dehydratase-deficient porphyria

AHP:

Acute hepatic porphyria

AHPs:

Acute hepatic porphyrias

AIP:

Acute intermittent porphyria

HCC:

Hepatocellular carcinoma

HCP:

Hereditary coproporphyria

VP:

Variegate porphyria

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Correspondence to Jorge Frank .

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Communicated by: John Christodoulou, MB BS PhD FRACP FRCPA

Appendices

Synopsis

We performed a systematic analysis of the occurrence of malignant tumours in patients with acute hepatic porphyrias, which indicates that German patients with this type of porphyria have an approximately 35-fold increased risk of developing hepatocellular carcinoma.

Author Contribution

E.L. and J.F. were involved in conception and design of the study, analysis and interpretation of data and drafting the article. M.S. and H.S. were involved in analysis and interpretation of data and critical revision of the manuscript. N.J.N. was involved in conception and design of the study and critical revision of the manuscript.

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Conflict of Interest

Estefanía Lang, Martin Schäfer, Holger Schwender, Norbert J. Neumann, and Jorge Frank declare that they have no conflict of interest.

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© 2015 SSIEM and Springer-Verlag Berlin Heidelberg

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Lang, E., Schäfer, M., Schwender, H., Neumann, N.J., Frank, J. (2015). Occurrence of Malignant Tumours in the Acute Hepatic Porphyrias. In: Zschocke, J., Baumgartner, M., Morava, E., Patterson, M., Rahman, S., Peters, V. (eds) JIMD Reports, Volume 22. JIMD Reports, vol 22. Springer, Berlin, Heidelberg. https://doi.org/10.1007/8904_2015_406

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  • DOI: https://doi.org/10.1007/8904_2015_406

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-662-47452-5

  • Online ISBN: 978-3-662-47453-2

  • eBook Packages: MedicineMedicine (R0)

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