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Data required for the evaluation of newborn screening programmes.

Bernhard Liebl¹, Uta Nennstiel-Ratzel, Adelbert Roscher

¹Bavarian State Ministry of Health, Germany.

European Journal of Pediatrics

|November 15, 2003

Summary

Newborn screening (NBS) using tandem mass spectrometry can identify more disorders like medium-chain acyl-CoA dehydrogenase deficiency (MCADD). However, more research is needed on long-term outcomes for screened infants.

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Area of Science:

Biochemistry
Genetics
Public Health

Background:

Tandem mass spectrometry (TMS) enhances newborn screening (NBS) potential for phenylketonuria and other disorders.
Limited data exists on the incidence, natural course, and risks of expanded NBS programs.

Purpose of the Study:

To evaluate the incidence and clinical presentation of medium-chain acyl-CoA dehydrogenase deficiency (MCADD) using NBS data.
To compare clinically detected MCADD cases with those identified through NBS.

Main Methods:

Literature search and analysis of data from the Bavarian extended screening trial.
Estimation of MCADD incidence from NBS and clinical diagnosis data.

Main Results:

NBS identifies significantly more MCADD cases than clinical diagnosis (67% more).

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The common 985A-->G mutation doesn't fully explain this discrepancy.

Further research is required to understand MCADD's role in infant mortality.

Conclusions:

Expanded NBS programs show promise but require further investigation into long-term outcomes.
Standardized follow-up protocols are crucial for assessing outcomes in screened and clinically diagnosed individuals.