Evidence map›Paper›PMID 35112415›Full record

ArticleJournal of internal medicine2022

Risk of primary liver cancer in acute hepatic porphyria patients: A matched cohort study of 1244 individuals.

Mattias Lissing, Daphne Vassiliou, Ylva Floderus, Pauline Harper, Matteo Bottai, Marianna Kotopouli, Hannes Hagström, Eliane Sardh, Staffan Wahlin

Open access · hybridAbstract read
In one paragraph

Article in Journal of internal medicine, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed, 1 pooled it
4.8field-weighted citation impact, top 4% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

28 citing papers in PubMed, 1 synthesis or guideline pooled it, 57 citations in OpenAlex.

  1. Guideline
  2. Review
  3. Article
  4. A Prospective, Blinded Study of Symptom Prevalence and Specificity of Porphyrin Precursors in Carriers of Acute Hepatic Porphyria.Liver international : official journal of the International Association for the Study of the Liver · 2025
    Article
  5. Review
  6. Article
  7. Article
  8. Liver transplantation and primary liver cancer in porphyria.Liver international : official journal of the International Association for the Study of the Liver · 2025
    Review
  9. Acute hepatic porphyria in Denmark; a retrospective study.Orphanet journal of rare diseases · 2025
    Article
  10. Article
  11. Reducing diagnostic delays in acute hepatic porphyria using health records data and machine learning.Journal of the American Medical Informatics Association : JAMIA · 2025
    Article
  12. Givosiran: a targeted treatment for acute intermittent porphyria.Hematology. American Society of Hematology. Education Program · 2024
    Review
  13. Review
  14. Heme (dys)homeostasis and liver disease.Frontiers in physiology · 2024
    Review
  15. Article
  16. Article
  17. Article
  18. Review
  19. BALB.NCT-Molecular genetics and metabolism reports · 2023
    Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors at 2 institutions in 1 country.

Mattias LissingHepatology Division, Department of Upper GI Diseases, Karolinska University Hospital, Stockholm, Sweden.ORCID 0000-0003-1678-1190
Daphne VassiliouDepartment of Endocrinology, Karolinska University Hospital, Stockholm, Sweden.
Ylva FloderusCentre for Inherited Metabolic Diseases (CMMS), Porphyria Centre Sweden, Karolinska University Hospital, Stockholm, Sweden.
Pauline HarperCentre for Inherited Metabolic Diseases (CMMS), Porphyria Centre Sweden, Karolinska University Hospital, Stockholm, Sweden.
Matteo BottaiDivision of Biostatistics, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.
Marianna KotopouliDivision of Biostatistics, Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.
Hannes HagströmHepatology Division, Department of Upper GI Diseases, Karolinska University Hospital, Stockholm, Sweden.ORCID 0000-0002-8474-1759
Eliane SardhDepartment of Endocrinology, Karolinska University Hospital, Stockholm, Sweden.ORCID 0000-0002-2366-2213
Staffan WahlinHepatology Division, Department of Upper GI Diseases, Karolinska University Hospital, Stockholm, Sweden.
Karolinska University Hospital · SEKarolinska Institutet · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe acute hepatic porphyrias (AHP) are associated with a risk of primary liver cancer (PLC), but risk estimates are unclear, and what AHP characteristics that predict PLC risk are unknown. In this register-based, matched cohort study, we assessed the PLC risk in relation to biochemical and clinical porphyria severity, genotype, age, and sex.

methodsAll patients in the Swedish porphyria register with acute intermittent porphyria (AIP), variegate porphyria (VP), or hereditary coproporphyria (HCP) during 1987-2015 were included. This AHP cohort was compared with age-, sex-, and county-matched reference individuals from the general population. National register-based hospital admissions for AHP were used to indicate the clinical severity. For AIP, the most common AHP type, patients were stratified by genotype and urinary porphobilinogen (U-PBG). Incident PLC data were collected from national health registers.

resultsWe identified 1244 individuals with AHP (1063 [85%] AIP). During a median follow-up of 19.5 years, we identified 108 incident PLC cases, including 83 AHP patients (6.7%) and 25 of 12,333 reference individuals (0.2%). The adjusted hazard ratio for AHP-PLC was 38.0 (95% confidence interval: 24.3-59.3). Previously elevated U-PBG and hospitalizations for porphyria, but not AIP genotype or sex, were associated with increased PLC risk. Patients aged >50 years with previously elevated U-PBG (n = 157) had an annual PLC incidence of 1.8%.

conclusionThis study confirmed a high PLC risk and identified a strong association with clinical and biochemical AIP activity. Regular PLC surveillance is motivated in patients older than 50 years with a history of active AIP.

Indexed as

Liver NeoplasmsPorphyria, Acute IntermittentPorphyriasPorphyrias, HepaticCohort StudiesHumansPorphobilinogen SynthasePorphobilinogen Synthaseacute intermittent porphyriahepatocellular carcinomainherited diseaserare diseasesurveillance

Identifiers

PMID35112415
PMCPMC9311710
OpenAlexW4210410832

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.