Evidence map›Paper›PMID 29511899›Full record

ArticleClinical and experimental nephrology2018

Clinical characteristics and genetic backgrounds of Japanese patients with atypical hemolytic uremic syndrome.

Madoka Fujisawa, Hideki Kato, Yoko Yoshida, Tomoko Usui, Munenori Takata, Mika Fujimoto, Hideo Wada, Yumiko Uchida, Koichi Kokame, Masanori Matsumoto and 3 more

Erratum issuedAbstract read
In one paragraph

Article in Clinical and experimental nephrology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 41 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
41citing papers in PubMed, 2 pooled it
–field-weighted citation impact
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

41 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. Article
  12. Atypical hemolytic uremic syndrome with aFrontiers in pediatrics · 2025
    Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Review
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

13 authors.

Madoka FujisawaDivision of Nephrology and Endocrinology, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan.
Hideki KatoDivision of Nephrology and Endocrinology, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan. hkatou-tky@umin.ac.jp.
Yoko YoshidaDivision of Nephrology and Endocrinology, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan.
Tomoko UsuiDivision of Nephrology and Endocrinology, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan.
Munenori TakataClinical Research Support Center (CresCent), The University of Tokyo, Tokyo, Japan.
Mika FujimotoDepartment of Cardiology and Nephrology, Mie University Graduate School of Medicine, Mie, Japan.
Hideo WadaDepartment of Molecular and Laboratory Medicine, Mie University Graduate School of Medicine, Tsu, Mie, Japan.
Yumiko UchidaDepartment of Molecular Pathogenesis, National Cerebral and Cardiovascular Center, Suita, Japan.
Koichi KokameDepartment of Molecular Pathogenesis, National Cerebral and Cardiovascular Center, Suita, Japan.
Masanori MatsumotoDepartment of Blood Transfusion Medicine, Nara Medical University, Nara, Japan.
Yoshihiro FujimuraJapanese Red Cross Kinki Block Blood Center, Ibaraki, Japan.
Toshiyuki MiyataDepartment of Cerebrovascular Medicine, National Cerebral and Cardiovascular Center, Suita, Japan.
Masaomi NangakuDivision of Nephrology and Endocrinology, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan. mnangaku-tky@umin.ac.jp.

Funding

The Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (C) 15K09246The Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (C) 16K09834The Practical Research Project for Rare/Intractable Diseases from Japan Agency for Medical Research and Development, AMED 17ek0109254h0001
6 · The paper itself

Abstract

backgroundAtypical hemolytic uremic syndrome (aHUS) is caused by complement overactivation, and its presentation and prognosis differ according to the underlying molecular defects. The aim of this study was to characterize the genetic backgrounds of aHUS patients in Japan and to elucidate the associations between their genetic backgrounds, clinical findings, and outcomes.

methodsWe conducted a nationwide epidemiological survey of clinically diagnosed aHUS patients and examined 118 patients enrolled from 1998 to 2016 in Japan. We screened variants of seven genes related to complement and coagulation, as well as positivity for anti-CFH antibodies, and assessed clinical manifestations, laboratory findings, and clinical course.

resultsThe most frequent genetic abnormalities were in C3 (31%) and the frequency of CFH variants was relatively low (10%) compared to Western countries. The predominant variant in this cohort was C3 p.I1157T (23%), which was related to favorable outcomes despite frequent relapses. A total of 72% of patients received plasma therapy, while 42% were treated with eculizumab. The prognosis of Japanese aHUS patients was relatively favorable, with a total mortality rate of 5.4% and a renal mortality rate of 15%.

conclusionsThe common occurrence of genotype C3, especially the p.I1157T variant was the characteristic of the genetic backgrounds of Japanese aHUS patients that differed from those of Caucasian patients. In addition, the favorable prognosis of patients with the unique C3 p.I1157T variant indicates that understanding the clinical characteristics of individual gene alterations is important for predicting prognosis and determining therapeutic strategies in aHUS.

Indexed as

Genetic BackgroundAdolescentAdultAgedAged, 80 and overAtypical Hemolytic Uremic SyndromeChildChild, PreschoolComplement System ProteinsFemaleHumansInfantJapanMaleMiddle AgedRetrospective StudiesComplement System ProteinsAtypical hemolytic uremic syndromeComplementCongenital disorderEpidemiologyThrombotic microangiopathy

Identifiers

PMID29511899
PMCPMC6437120

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.