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Genetic screening for cystic fibrosis
Anthony R Gregg1, Joe Leigh Simpson
1Department of Obstetrics and Gynecology, Baylor College of Medicine, Houston, TX 77030, USA. agregg@bcm.tmc.edu
Obstetrics and Gynecology Clinics of North America
|July 11, 2002
Summary
New guidelines offer cystic fibrosis carrier screening to all pregnant women, refining genetic disease risk estimates. Recommendations include ethnic-specific frequencies and a pan-ethnic panel inclusion threshold.
Area of Science:
- Medical Genetics
- Public Health
Background:
- Cystic Fibrosis (CF) is a significant genetic disorder.
- Previous carrier screening lacked a systematic, population-wide approach.
- Advances in genetic technology necessitate updated screening protocols.
Purpose of the Study:
- To outline new recommendations for cystic fibrosis carrier screening.
- To establish a systematic approach for offering screening to pregnant women.
- To provide refined risk estimates for cystic fibrosis in a genetic disease context.
Main Methods:
- Development of ethnic-specific carrier frequencies for targeted screening.
- Establishment of a 1/1,000 carrier frequency threshold for pan-ethnic CF mutation panels.
- Framework for concurrent or sequential screening during pregnancy.
Main Results:
- Comprehensive standards for recessive disease screening provided by NIH, ACOG, and ACMG.
- Guidelines recommend screening for Caucasians of European or Ashkenazi-Jewish descent.
- Defined criteria for inclusion in cystic fibrosis mutation panels.
Conclusions:
- The new recommendations represent a landmark in systematic genetic disease screening.
- Future technological advances are expected to reduce screening costs.
- Ongoing evaluation of these guidelines will be crucial as clinical applications evolve.