Atypical hemolytic uremic syndrome: Korean pediatric series
Jiwon M. Lee
Department of Pediatrics, Seoul National University Children's Hospital, Seoul, Korea
Search for more papers by this authorYoung Seo Park
Department of Pediatrics, Asan Medical Center, University of Ulsan, Seoul, Korea
Search for more papers by this authorJoo Hoon Lee
Department of Pediatrics, Asan Medical Center, University of Ulsan, Seoul, Korea
Search for more papers by this authorSe Jin Park
Department of Pediatrics, Ajou University School of Medicine, Suwon, Korea
Search for more papers by this authorJae Il Shin
Department of Pediatrics, Severance Children's Hospital, Yonsei University, Seoul, Korea
Search for more papers by this authorYong-Hoon Park
Department of Pediatrics, Yeungnam University College of Medicine, Daegu, Korea
Search for more papers by this authorKee Hwan Yoo
Department of Pediatrics, Korea University Guro Hospital, Seoul, Korea
Search for more papers by this authorMin Hyun Cho
Department of Pediatrics, Kyungpook National University Hospital, Daegu, Korea
Search for more papers by this authorSu-Young Kim
Department of Pediatrics, Pusan National University Children's Hospital, Yangsan, Korea
Search for more papers by this authorSeong Heon Kim
Department of Pediatrics, Pusan National University Children's Hospital, Yangsan, Korea
Search for more papers by this authorMee Kyung Namgoong
Department of Pediatrics, Wonju College of Medicine, Yonsei University, Wonju, Korea
Search for more papers by this authorSeung Joo Lee
Department of Pediatrics, Ehwa University Mokdong Hospital, Seoul, Korea
Search for more papers by this authorJun Ho Lee
Department of Pediatrics, Bundang CHA Hospital, Seongnam, Korea
Search for more papers by this authorHee Yeon Cho
Department of Pediatrics, Samsung Medical Center, Seoul, Korea
Search for more papers by this authorKyoung Hee Han
Department of Pediatrics, Jeju University Hospital, Jeju, Korea
Search for more papers by this authorHee Gyung Kang
Department of Pediatrics, Seoul National University Children's Hospital, Seoul, Korea
Research Coordination Center for Rare Diseases, Seoul National University Hospital, Seoul, Korea
Search for more papers by this authorIl Soo Ha
Department of Pediatrics, Seoul National University Children's Hospital, Seoul, Korea
Search for more papers by this authorJun-Seok Bae
Samsung Genome Institute, Samsung Medical Center, Seoul, Korea
Department of Health Sciences and Technology, Samsung Advanced Institute for Health Sciences and Technology, Sungkyunkwan University, Seoul, Korea
Search for more papers by this authorNayoung K. D. Kim
Samsung Genome Institute, Samsung Medical Center, Seoul, Korea
Search for more papers by this authorWoong-Yang Park
Samsung Genome Institute, Samsung Medical Center, Seoul, Korea
Sungkyunkwan University School of Medicine, Seoul, Korea
Search for more papers by this authorCorresponding Author
Hae Il Cheong
Department of Pediatrics, Seoul National University Children's Hospital, Seoul, Korea
Research Coordination Center for Rare Diseases, Seoul National University Hospital, Seoul, Korea
Kidney Research Institute, Medical Research Center, Seoul National University College of Medicine, Seoul, Korea
Correspondence: Hae Il Cheong, MD PhD, Department of Pediatrics, Seoul National University Children's Hospital, 101 Daehak-ro, Jongno-gu, Seoul, 110-744, Korea. Email [email protected]Search for more papers by this authorJiwon M. Lee
Department of Pediatrics, Seoul National University Children's Hospital, Seoul, Korea
Search for more papers by this authorYoung Seo Park
Department of Pediatrics, Asan Medical Center, University of Ulsan, Seoul, Korea
Search for more papers by this authorJoo Hoon Lee
Department of Pediatrics, Asan Medical Center, University of Ulsan, Seoul, Korea
Search for more papers by this authorSe Jin Park
Department of Pediatrics, Ajou University School of Medicine, Suwon, Korea
Search for more papers by this authorJae Il Shin
Department of Pediatrics, Severance Children's Hospital, Yonsei University, Seoul, Korea
Search for more papers by this authorYong-Hoon Park
Department of Pediatrics, Yeungnam University College of Medicine, Daegu, Korea
Search for more papers by this authorKee Hwan Yoo
Department of Pediatrics, Korea University Guro Hospital, Seoul, Korea
Search for more papers by this authorMin Hyun Cho
Department of Pediatrics, Kyungpook National University Hospital, Daegu, Korea
Search for more papers by this authorSu-Young Kim
Department of Pediatrics, Pusan National University Children's Hospital, Yangsan, Korea
Search for more papers by this authorSeong Heon Kim
Department of Pediatrics, Pusan National University Children's Hospital, Yangsan, Korea
Search for more papers by this authorMee Kyung Namgoong
Department of Pediatrics, Wonju College of Medicine, Yonsei University, Wonju, Korea
Search for more papers by this authorSeung Joo Lee
Department of Pediatrics, Ehwa University Mokdong Hospital, Seoul, Korea
Search for more papers by this authorJun Ho Lee
Department of Pediatrics, Bundang CHA Hospital, Seongnam, Korea
Search for more papers by this authorHee Yeon Cho
Department of Pediatrics, Samsung Medical Center, Seoul, Korea
Search for more papers by this authorKyoung Hee Han
Department of Pediatrics, Jeju University Hospital, Jeju, Korea
Search for more papers by this authorHee Gyung Kang
Department of Pediatrics, Seoul National University Children's Hospital, Seoul, Korea
Research Coordination Center for Rare Diseases, Seoul National University Hospital, Seoul, Korea
Search for more papers by this authorIl Soo Ha
Department of Pediatrics, Seoul National University Children's Hospital, Seoul, Korea
Search for more papers by this authorJun-Seok Bae
Samsung Genome Institute, Samsung Medical Center, Seoul, Korea
Department of Health Sciences and Technology, Samsung Advanced Institute for Health Sciences and Technology, Sungkyunkwan University, Seoul, Korea
Search for more papers by this authorNayoung K. D. Kim
Samsung Genome Institute, Samsung Medical Center, Seoul, Korea
Search for more papers by this authorWoong-Yang Park
Samsung Genome Institute, Samsung Medical Center, Seoul, Korea
Sungkyunkwan University School of Medicine, Seoul, Korea
Search for more papers by this authorCorresponding Author
Hae Il Cheong
Department of Pediatrics, Seoul National University Children's Hospital, Seoul, Korea
Research Coordination Center for Rare Diseases, Seoul National University Hospital, Seoul, Korea
Kidney Research Institute, Medical Research Center, Seoul National University College of Medicine, Seoul, Korea
Correspondence: Hae Il Cheong, MD PhD, Department of Pediatrics, Seoul National University Children's Hospital, 101 Daehak-ro, Jongno-gu, Seoul, 110-744, Korea. Email [email protected]Search for more papers by this authorAbstract
Background
Atypical hemolytic uremic syndrome (aHUS) is a rare disease with a genetic predisposition. Few studies have evaluated the disease in the Asian population. We studied a Korean pediatric cohort to delineate the clinical characteristics and genotypes.
Methods
A multicenter cohort of 51 Korean children with aHUS was screened for mutations using targeted exome sequencing covering 46 complement related genes. Anti-complement-factor-H autoantibody (anti-CFH) titers were measured. Multiplex ligation-dependent probe amplification assay was performed to detect deletions in the complement factor-H related protein genes (CFHR) in the patients as well as in 100 healthy Korean controls. We grouped the patients according to etiology and compared the clinical features using Mann–Whitney U-test and chi-squared test.
Results
Fifteen patients (group A, 29.7%) had anti-CFH, and mutations were detected in 11 (group B, 21.6%), including one with combined mutations. The remaining 25 (group C, 49.0%) were negative for both. The prevalence of anti-CFH was higher than the worldwide level. Group A had a higher onset age than group B, although the difference was not significant. Group B had the worst renal outcome. Gene frequencies of homozygous CFHR1 deletion were 73.3%, 2.7% and 1% in group A, group B + C and the control, respectively.
Conclusions
The incidence of anti-CFH in the present Korean aHUS cohort was high. Clinical outcomes largely conformed to the previous reports. Although the sample size was limited, this cohort provides a reassessment of clinicogenetic features of aHUS in Korean children.
Supporting Information
Filename | Description |
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ped12549-sup-0001-si.doc140.5 KB |
Table S1 List of 46 genes included in the targeted exome sequencing. Table S2 Other genetic variations detected by targeted exome sequencing and in silico tools for prediction. Table S3 In silico tools for functional prediction of the genetic variations. |
Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.
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