Abstract
Mary Lombardi was 32 years old, of Italian descent, and pregnant for the first time. There was no history of cystic fibrosis (CF) in her family or in her husband’s family. As recommended by the American College of Obstetricians and Gynecologists [1], her physician offered her CF carrier screening at her first prenatal visit. She tested negative for the mutations analyzed. The mutation panel ordered for Mary’s carrier screen had a detection rate of 93% in Caucasians. After testing, Mary’s risk to be a carrier of CF was reduced from 1/25 (4%) to 1/343 (0.3%), based on the negative result, her ethnicity, and the negative family history. Mary’s husband, Martin Lombardi, was not screened for CF mutations, based on Mary’s negative result and his negative family history. Although some physicians offer couples-based tested initially, a typical approach is maternal testing followed by assessment of need for paternal testing based on the maternal result. At 16 weeks gestation, prenatal ultrasound identified an echogenic bowel abnormality.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
ACOG (2001) Preconception and prenatal carrier screening for CF: clinical and laboratory guidelines. American College of Obstetricians and Gynecologists, Washington, DC
Welsh MF, Ramsey BW, Accurso F et al (2001) Cystic fibrosis. In: Scriber CF, Beaudet AL, Sly WS et al (eds) Inherited and metabolic basis of disease. McGraw-Hill, New York
Zielenski J (2000) Genotype and phenotype in cystic fibrosis. Respiration 67:117–133
Castellani C, Cuppens H, Macek M Jr et al (2008) Consensus on the use and interpretation of cystic fibrosis mutation analysis in clinical practice. J Cyst Fibros 7:179–196
Cystic Fibrosis Genetic Analysis Consortium (2010) Consortium website: www.genet.sickkids.on.ca/cftr. Accessed 10 Apr 2010
Eddleman K (2004) Controversial ultrasound findings. Obstet Gynecol Clin North Am 31:61–69
Schrijver I, Cherny SC, Zehnder JL (2007) Testing for maternal cell contamination in prenatal samples. J Mol Diagn 9:394–400
American College of Medical Genetics Laboratory Practice Committee Working Group (2000) ACMG recommendations for standards for interpretation of sequence variants. Genet Med 2:302–303
Dörk T, Mekus F, Schmidt K et al (1994) Detection of more than 50 different CFTR mutations in a large group of German cystic fibrosis patients. Hum Genet 94:533–542
Hirtz S, Gonska T, Seydewitz HH et al (2004) CFTR Cl-channel function in native human colon correlates with the genotype and phenotype in cystic fibrosis. Gastroenterology 127:1085–1095
Casals T, Bassas L, Egozcue S et al (2000) Heterogeneity for mutations in the CFTR gene and clinical correlations in patients with congenital absence of the vas deferens. Hum Reprod 15:1476–1483
Additional Reading
Dequeker E, Stuhrmann M, Morris MA et al (2009) Best practice guidelines for molecular genetic diagnosis of cystic fibrosis and CFTR-related disorders – updated European recommendations. Eur J Hum Genet 17:51–65
Grody WW, Cutting GR, Klinger KW et al (2001) Laboratory standards and guidelines for population-based cystic fibrosis carrier screening. Genet Med 3:456–461
Nagan N, Faulkner NE, Curtis C et al (2011) Laboratory guidelines for detection, interpretation and reporting of maternal cell contamination (MCC) in prenatal analyses: A report of the association for molecular pathology. J Mol Diagn. 13:7–11
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2011 Springer-Verlag Berlin Heidelberg
About this chapter
Cite this chapter
Heim, R.A. (2011). Cystic Fibrosis. In: Schrijver, I. (eds) Diagnostic Molecular Pathology in Practice. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-19677-5_1
Download citation
DOI: https://doi.org/10.1007/978-3-642-19677-5_1
Published:
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-19676-8
Online ISBN: 978-3-642-19677-5
eBook Packages: MedicineMedicine (R0)