Detecting multiple lysosomal storage diseases by tandem mass spectrometry--a national newborn screening program in Taiwan.
Clin Chim Acta
; 431: 80-6, 2014 Apr 20.
Article
in En
| MEDLINE
| ID: mdl-24513544
ABSTRACT
BACKGROUND:
Interest in lysosomal storage diseases in newborn screening programs has increased in recent years. Two techniques, fluorescence (4-MU) and tandem mass spectrometry (MS/MS) methods are frequently used. We report a pilot study of large scale newborn screening for Fabry, Pompe, Gaucher, and MPS I diseases by using the MS/MS method in Taiwan and compared the performance of the MS/MS with 4-MU methods.METHODS:
More than 100,000 dried blood spots (DBSs) were collected consecutively as part of the national Taiwan newborn screening programs. The enzyme activities were detected by the MS/MS method from a DBS punch. Mutation analysis was further performed for newborns with detected enzyme deficiency.RESULTS:
The DNA sequence analysis for suspected cases revealed 64 newborns with confirmed Fabry mutations, 16 were classified as infantile or late-onset Pompe disease, and 1 was characterized as Gaucher disease. The positive predict value increased from 4.0% to 7.1% in the Pompe study, and from 61.0% to 95.5% in the Fabry study by the MS/MS method compared to 4-MU assay.CONCLUSIONS:
The MS/MS method has been validated as a more specific, powerful and efficient tool than the 4-MU assay. It also provided a multiplex solution of newborn screening for lysosomal storage diseases.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Lysosomal Storage Diseases
Type of study:
Clinical_trials
/
Diagnostic_studies
/
Prognostic_studies
/
Screening_studies
Limits:
Female
/
Humans
/
Male
/
Newborn
Country/Region as subject:
Asia
Language:
En
Journal:
Clin Chim Acta
Year:
2014
Document type:
Article
Affiliation country: