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Generation of Human Nasal Epithelial Cell Spheroids for Individualized Cystic Fibrosis Transmembrane Conductance Regulator Study
Published on: April 11, 2018
Cystic fibrosis in a Hispanic adolescent
Jenny H Lin1, Joseph M Collaco, Shruti M Paranjape
1Eudowood Division of Pediatric Respiratory Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland.
Pediatric Pulmonology
|February 13, 2013
Summary
A new cystic fibrosis (CF) mutation was identified in a Hispanic adolescent with chronic respiratory symptoms. Genetic testing is crucial for diagnosing CF in diverse populations presenting with characteristic symptoms.
Area of Science:
- Medical Genetics
- Pediatric Pulmonology
Background:
- Cystic Fibrosis (CF) diagnosis typically relies on sweat chloride tests and genetic analysis.
- Early diagnosis is critical for effective management and improved outcomes.
- Diagnostic challenges can arise in non-Caucasian populations due to varying mutation frequencies.
Observation:
- A Hispanic adolescent presented with chronic respiratory issues and failure to thrive.
- Initial sweat chloride tests were indeterminate, necessitating further investigation.
- DNA sequencing revealed a novel frameshift mutation (Nt3878insATCAG) in the CFTR gene.
Findings:
- The identified mutation, Nt3878insATCAG, leads to a premature stop codon in exon 20 of the CFTR gene.
- This mutation was confirmed as deleterious and disease-causing.
- The case highlights a unique genetic finding in cystic fibrosis diagnosis.
Implications:
- Emphasizes the importance of high clinical suspicion for CF in adolescents with suggestive symptoms, regardless of ethnicity.
- Underscores the necessity of genetic testing, even with indeterminate sweat chloride results, for accurate CF diagnosis.
- Suggests a need for expanded genetic screening protocols in diverse pediatric populations to identify rare CFTR mutations.
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