Yang X, Lv ZL, Tang Q, Chen XQ, Huang L, Yang MX, Lan LC, Shan QW. Congenital disorder of glycosylation caused by mutation of ATP6AP1 gene (c.1036G>A) in a Chinese infant: A case report. World J Clin Cases 2021; 9(26): 7876-7885 [PMID: 34621841 DOI: 10.12998/wjcc.v9.i26.7876]
Corresponding Author of This Article
Qing-Wen Shan, MD, PhD, Professor, Department of Pediatrics, The First Affiliated Hospital of Guangxi Medical University, No. 6 Shuangyong Road, Nanning 530021, Guangxi Zhuang Autonomous Region, China. shanqw333@163.com
Research Domain of This Article
Pediatrics
Article-Type of This Article
Case Report
Open-Access Policy of This Article
This article is an open-access article which was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/
Xia Yang, Qing Tang, Xiu-Qi Chen, Li Huang, Mei-Xiong Yang, Lian-Cheng Lan, Qing-Wen Shan, Department of Pediatrics, The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, Guangxi Zhuang Autonomous Region, China
Zi-Li Lv, Department of Pathology, The First Affiliated Hospital of Guangxi Medical University, Nanning 530021, Guangxi Zhuang Autonomous Region, China
Author contributions: Yang X, Lan LC, and Yang MX performed the literature review and article drafting; Tang Q, Huang L, and Chen XQ collected the samples from the patient and compiled the clinical information; Lv ZL performed the pathological analysis; Shan QW performed project design and article revision and review; all authors reviewed and approved the final manuscript.
Informed consent statement: Informed consent was obtained from the parents of the patient for publication of this report and any accompanying images.
Conflict-of-interest statement: The authors declare that they have no interest conflicts to report.
CARE Checklist (2016) statement: The authors have read the CARE Checklist (2016), and the manuscript was prepared and revised according to the CARE Checklist (2016).
Open-Access: This article is an open-access article that was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution NonCommercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/Licenses/by-nc/4.0/
Corresponding author: Qing-Wen Shan, MD, PhD, Professor, Department of Pediatrics, The First Affiliated Hospital of Guangxi Medical University, No. 6 Shuangyong Road, Nanning 530021, Guangxi Zhuang Autonomous Region, China. shanqw333@163.com
Received: April 12, 2021 Peer-review started: April 12, 2021 First decision: June 23, 2021 Revised: July 4, 2021 Accepted: July 14, 2021 Article in press: July 14, 2021 Published online: September 16, 2021
Abstract
BACKGROUND
The ATP6AP1 gene coding for the accessory protein Ac45 of the vacuolar-type adenosine triphosphatases (V-ATPase) is located on chromosome Xq28. Defects in certain subunits or accessory subunits of the V-ATPase can lead to congenital disorders of glycosylation (CDG). CDG is a group of metabolic disorders in which defective protein and lipid glycosylation processes affect multiple tissues and organs. Therefore, the clinical presentation of patients with ATP6AP1-CDG varies widely. In this report, we present a case of ATP6AP1-CDG in a Chinese infant, with clinical features and genotype.
CASE SUMMARY
An 8-mo-old boy was admitted to our hospital because unexplained hepatosplenomegaly and elevated transaminases that had been noted while he was being treated for a cough at a local hospital. A post-admission examination at our hospital revealed abnormalities in the infant’s liver, brain, and immune system. Trio-based whole exome gene analysis identified a hemizygous pathogenic mutation c.1036G>A (p.E346K) in exon 9 of the ATP6AP1 gene. This variant of the ATP6AP1 gene has not been reported in East Asian countries until now.
CONCLUSION
Based on the infant’s clinical manifestations and the results of genetic detection, he was clearly diagnosed with ATP6AP1-CDG. The clinical manifestations of children with CDG vary widely. Genetic testing analysis helps in the clinical diagnosis of children with CDG.
Core Tip: This article reports on an 8-mo-old male infant with hemizygous pathogenic mutation c.1036G>A (p.E346K) in the ATP6AP1 gene. ATP6AP1-congenital disorders of glycosylation (ATP6AP1-CDG) is a recently identified disease and rarely occurs in Asia. If a patient shows liver, neurological, and immune deficiencies, or other multisystem abnormalities, early genetic screening is advised for a definitive diagnosis. This study expands the disease spectrum of ATP6AP1-CDG and improves its understanding.
