Molecular characterisation of 34 patients with biotinidase deficiency ascertained by newborn screening and family investigation.

Abstract excerpt

This study characterises the spectrum of biotinidase mutations in 21 patients (17 families) with profound biotinidase deficiency (BD) and 13 unrelated patients with partial BD using a denaturing gradient gel electrophoretic mutation screening and selective sequencing approach. In 29 from 30 unrelated families we found biallelic mutations including four common mutations, D444H (frequency 23.3%), G98:d7i3(20.0%),...

Topics

• Amidohydrolases
• Automation
• Biotinidase
• Electrophoresis, Polyacrylamide Gel
• Humans
• Infant, Newborn
• Mutation
• Neonatal Screening
• Sequence Analysis, DNA