Established newborn screening for phenylketonuria in South Australia.
Expanded screening to include galactosaemia, homocystinuria, hereditary tyrosinaemia, histidinaemia, maple syrup urine disease, and alpha 1-antitrypsin deficiency.
Subsequently added hypothyroidism screening.
Purpose of the Study:
Evaluate the utility of expanded newborn screening tests.
Assess the effectiveness and impact of adding new screening panels.
Determine which screening tests provide clinical benefit.
Main Methods:
Retrospective analysis of screening program data.
Inclusion of galactosaemia, homocystinuria, hereditary tyrosinaemia, histidinaemia, maple syrup urine disease, alpha 1-antitrypsin deficiency, and hypothyroidism.
Monitoring of detection rates, repeat sample requests, and patient outcomes.
Main Results:
Galactosaemia and hypothyroidism screening proved beneficial additions.
Hereditary tyrosinaemia and alpha 1-antitrypsin deficiency screening led to repeat samples, anxiety, and no patient benefit.
Homocystinuria, maple syrup urine disease, and histidinaemia were not effectively detected or yielded low detection rates.
Conclusions:
Galactosaemia and hypothyroidism screening are valuable components of the South Australian newborn program.
Screening for hereditary tyrosinaemia, alpha 1-antitrypsin deficiency, maple syrup urine disease, and histidinaemia was discontinued due to lack of benefit.
Current newborn screening in South Australia includes phenylketonuria, hypothyroidism, galactosaemia, and homocystinuria.