Inherited metabolic disorders in Thailand--Siriraj experience
Wasant, P.; Svasti, J.; Srisomsap, C.; Liammongkolkul, S.; Naylor, E.W.; Matsumoto, I.
Southeast Asian Journal of Tropical Medicine and Public Health 30(Suppl 2): 124-137
1999
ISSN/ISBN: 0125-1562 PMID: 11400749 Document Number: 6996
The incidence of inborn errors of metabolism (IEM) in Thailand is yet unknown. However, by estimation it is generally accepted to be 1 in 5,000. From a survey in 7 medical schools from different parts of the country and a large pediatric hospital in Bangkok, we found numerous cases of IEM nationwidc. Thesc were amino acid disorders, carbohydrate disorders, urea cycle defects, peroxisomal, lysosomal storage disorders, and many others. Since Thais are quite homogeneous in their genetic make-up; it is, therefore, very likely that IEM is much more prevalent than we realized. With the exception of thalassemias, IFAM is probably very common in Thailand and other countries in the Asia-Pacific region. IEM identified were amino acid disorders eg phenylketonuria, maple syrup urine disease: urea cycle disorders eg ornithine transcarbamylase deficincy (OTC), argininosuccinic lyase deficiency (ALD), argininosuccinic acid synthetasc deficiency (ASD); glycogen storage disorders eg Pompe's discase, Von Gierkc's; organic acid disorders eg, isovaleric acidemia, methylmalonic acidemia. Lysosmal storagc disorders identified were GM1 gangliosidosis, mucolipidosis II, Hurler, Hunter, Maroteaux-Lamy, Sialidosis (neuraminidase deficicncy), Sly, Scheie, Gaucher, Niemann-Pick, Sandhoff and many other neurodegeneraative disorders identified were rhizomelic chondrodysplasia punctata (RCDP) and Zellweger. Recently fatty acid oxidation disorders: MCAD, translocase deficiency and multiple carbosxylase deficiency 9biotinidase deficiency) were also identified.
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