Back to Search Start Over

Aromatic l‐amino acid decarboxylase deficiency in Taiwan

Authors :
Wuh‐Liang Hwu
Rai‐Hseng Hsu
Mei‐Hsin Li
Hui‐Min Lee
Hui‐An Chen
Ni‐Chung Lee
Yin‐Hsiu Chien
Source :
JIMD Reports, Vol 64, Iss 5, Pp 387-392 (2023)
Publication Year :
2023
Publisher :
Wiley, 2023.

Abstract

Abstract Aromatic l‐amino acid decarboxylase (AADC) deficiency is a rare inherited disorder that affects neurotransmitter biosynthesis. A DDC founder mutation c.714 + 4A > T (IVS6 + 4A > T) is prevalent in the Chinese population. This study investigated the epidemiology of AADC deficiency in Taiwan by analyzing data from National Taiwan University Hospital (NTUH), a central institution for diagnosing and treating the disease. From January 2000 to March 2023, 77 patients with AADC deficiency visited NTUH. Among them, eight were international patients seeking a second opinion, and another two had one or both non‐Chinese parents; all others were ethnically Chinese. The c.714 + 4A > T mutation accounted for 85% of all mutated alleles, and 94% of patients exhibited a severe phenotype. Of the 77 patients, 31 received gene therapy at a mean age of 3.76 years (1.62–8.49) through clinical trials, and their current ages were significantly older than those of the remaining patients. Although the combined incidence of AADC deficiency in this study (1:66491 for 2004 and later) was lower than that reported in newborn screening (1:31997 to 1:42662), case surges coincided with the launch of clinical trials and the implementation of newborn screening. Currently, many young patients are awaiting for treatment.

Details

Language :
English
ISSN :
21928312
Volume :
64
Issue :
5
Database :
Directory of Open Access Journals
Journal :
JIMD Reports
Publication Type :
Academic Journal
Accession number :
edsdoj.450df762eb41cb9f86727b17781976
Document Type :
article
Full Text :
https://doi.org/10.1002/jmd2.12387