Evidence map›Paper›PMID 32158253›Full record

ReviewThe application of clinical genetics2020

Alkaptonuria: Current Perspectives.

Andrea Zatkova, Lakshminarayan Ranganath, Ludevit Kadasi

Open access · goldAbstract readReview
In one paragraph

Review in The application of clinical genetics, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed
4.9field-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

32 citing papers in PubMed, 62 citations in OpenAlex.

  1. Alcaptonuria.Internal medicine (Tokyo, Japan) · 2026
    Article
  2. Review
  3. Article
  4. Article
  5. Combined alkaptonuria and osteoporosis contributing to chronic back pain.Endocrinology, diabetes & metabolism case reports · 2025
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Review
  11. Review
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  13. Alkaptonuria.Nature reviews. Disease primers · 2024
    Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. [Research advances in pharmacotherapy for rare diseases in children].Zhongguo dang dai er ke za zhi = Chinese journal of contemporary pediatrics · 2023
    Review
  19. 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

3 authors at 3 institutions in 2 countries.

Andrea ZatkovaDepartment of Human Genetics, Biomedical Research Center, Slovak Academy of Sciences, Institute of Clinical and Translational Research, Bratislava, Slovakia.
Lakshminarayan RanganathNational Alkaptonuria Centre, Royal Liverpool University Hospital, Liverpool, UK.
Ludevit KadasiDepartment of Human Genetics, Biomedical Research Center, Slovak Academy of Sciences, Institute of Clinical and Translational Research, Bratislava, Slovakia.
Biomedical Research Center of the Slovak Academy of Sciences · SKComenius University Bratislava · SKUniversity of Liverpool · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The last 15 years have been the most fruitful in the history of research on the metabolic disorder alkaptonuria (AKU). AKU is caused by a deficiency of homogentisate dioxygenase (HGD), the enzyme involved in metabolism of tyrosine, and is characterized by the presence of dark ochronotic pigment in the connective tissue that is formed, due to high levels of circulating homogentisic acid. Almost 120 years ago, Sir Archibald Garrod used AKU to illustrate the concept of Mendelian inheritance in man. In January 2019, the phase III clinical study SONIA 2 was completed, which tested the effectiveness and safety of nitisinone in the treatment of AKU. Results were positive, and they will serve as the basis for the application for registration of nitisinone for treatment of AKU at the European Medicines Agency. Therefore, AKU might become a rare disease for which a cure will be found by 2020. We understand the natural history of the disease and the process of ochronosis much more, but at the same time there are still unanswered questions. One of them is the issue of the factors influencing the varying severity of the disease, since our recent genotype-phenotype study did not show that differences in residual homogentisic acid activity caused by the different mutations was responsible. Although nitisinone has proved to arrest the process of ochronosis, it has some unwanted effects and does not cure the disease completely. As such, enzyme replacement or gene therapy might become a new focus of AKU research, for which a novel suitable mouse model of AKU is available already. We believe that the story of AKU is also a story of effective collaboration between scientists and patients that might serve as an example for other rare diseases.

Indexed as

alkaptonurianitisinoneochronosisochronotic pigmentrare disease

Identifiers

PMID32158253
PMCPMC6986890
OpenAlexW3002682380

What OpenQuestion holds

Textmetadata
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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.