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Laboratory screening for genetic disorders and birth defects
1Department of Laboratory Medicine and Pathology, University of Alberta Hospitals, Edmonton, Canada.
Clinical Biochemistry
|October 1, 1994
Summary
Genetic screening programs, starting with newborn screening for PKU, have evolved significantly. This review covers newborn, prenatal, and heterozygote screening, emphasizing broader considerations beyond lab testing.
Area of Science:
- Medical screening
- Preventative health
- Genetic diagnostics
Background:
- Inherited disease screening began in the 1960s with newborn screening for phenylketonuria (PKU).
- Technological advancements enable large-scale testing for acquired and genetic disorders.
- Screening programs involve more than lab tests, including accessibility, education, treatment effectiveness, and ethical considerations.
Purpose of the Study:
- To review the evolution and scope of screening programs for inherited diseases.
- To discuss various types of genetic screening: newborn, prenatal, and heterozygote.
- To highlight the multifaceted nature of screening programs.
Main Methods:
- Literature review of screening program development and impact.
- Discussion of technological advancements in genetic testing.
- Analysis of key components of effective screening programs.
Main Results:
- Screening programs have substantially reduced disease burden.
- Expanded testing is now available for numerous genetic and acquired conditions.
- Effective screening requires consideration of accessibility, education, treatment, benefits, ethics, and cost.
Conclusions:
- Genetic screening is a vital preventative health measure with a long history.
- Modern screening encompasses diverse types and requires comprehensive program planning.
- The long-term individual and societal benefits of screening are significant.