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Atypical CF and CF related diseases
1Department of Pediatrics and Cystic Fibrosis Center, Hadassah University Hospital, Mount Scopus, Jerusalem, Israel. ek@cc.huji.ac.il
Paediatric Respiratory Reviews
|June 27, 2006
Summary
Atypical cystic fibrosis (CF) presents with varied symptoms, often delayed onset and single-organ issues. Diagnosis requires CFTR genotyping, as rare mutations may necessitate whole genome scanning.
Area of Science:
- Medical Genetics
- Pulmonology
- Clinical Medicine
Background:
- Atypical cystic fibrosis (CF) presents with diverse clinical manifestations, differing from classic presentations.
- These include delayed symptom onset, adult survival, chronic sinopulmonary disease, pancreatic sufficiency, and specific sweat chloride levels.
- Some patients exhibit single-organ involvement, such as congenital bilateral absence of the vas deferens (CBAVD), biliary cirrhosis, pancreatitis, or nasal polyposis.
Purpose of the Study:
- To outline the clinical characteristics of atypical cystic fibrosis.
- To emphasize diagnostic challenges and recommended approaches for identifying CFTR-associated diseases.
- To highlight the importance of considering rare mutations and advanced genetic testing.
Main Methods:
- Review of clinical characteristics associated with atypical CF presentations.
- Discussion of diagnostic tools including sweat chloride tests, CFTR genotyping, and nasal potential difference (PD) measurements.
- Consideration of genetic analysis, including whole genome scans for rare mutations.
Main Results:
- Atypical CF encompasses a spectrum of symptoms, from mild to single-organ involvement, with delayed clinical significance.
- Standard diagnostic methods may be inconclusive, necessitating advanced genetic testing for definitive diagnosis.
- Absence of common CFTR mutations does not exclude CFTR-related disorders.
Conclusions:
- Atypical cystic fibrosis requires a high index of suspicion due to its varied and often subtle presentation.
- Comprehensive diagnostic strategies, including advanced genetic analysis, are crucial for accurate identification.
- Further research into rare CFTR mutations is needed to fully understand atypical CF disease.
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