Lenticular subluxation in a patient with homocystinuria undetected by neonatal screening.

A Case of Homocystinuria Misdiagnosed as Moyamoya Disease: A Case Report

INTRODUCTION Homocystinuria is a hereditary disease caused by a defect in the enzymes involved in metabolizing methionine. Homocystinuria can influence many systems and may be mistaken for other diseases, including Moyamoya disease. Here, we report the case of a 10-year-old male patient with a diagnosis of Moyamoya disease who had been monitored for that for an extended period. The patient's di...

Asymptomatic maternal combined homocystinuria and methylmalonic aciduria (cblC) detected through low carnitine levels on newborn screening.

A symptom-free woman gave birth to a girl with a low carnitine level on newborn screening. The baby was unaffected, but the mother had biochemical abnormalities and mutations characteristic of the cblC defect of vitamin B(12) metabolism (late-onset form). This patient with cblC was detected through her infant's newborn screening.

Supero-nasal Subluxation of Lens in Homocystinuria – A Rare Case Report

Molecular genetic analysis of pyridoxine-nonresponsive homocystinuric siblings with different blood methionine levels during the neonatal period.

Two mutations in the cystathionine beta-synthase (CBS) gene were found in two Japanese siblings with pyridoxine non-responsive homocystinuria who had different methionine levels in their blood during the neonatal period. Both patients were compound heterozygotes of two mutant alleles: one had an A-to-G transition at nucleotide 194 (A194 G) that caused a histidine-to-arginine substitution at pos...

Neonatal screening and monitoring system in Taiwan.

Neonatal screening in Taiwan started as a pilot program in 1981. The coverage rate increased to 90% in 1990, and is currently more than 99%. Five diseases are covered in the screening program including congenital hypothyroidism, phenylketonuria, homocystinuria, galactosemia, and glucose-6-phosphate dehydrogenase deficiency. A monitoring system was established at the same time to ensure correct ...