Related Experiment Video
Updated: Aug 22, 2026

Fingerprinting Cardiolipin in Leukocytes by Mass Spectrometry for a Rapid Diagnosis of Barth Syndrome
Published on: March 23, 2022
Pseudo-Bartter's syndrome in an Egyptian infant with cystic fibrosis mutation N1303K
A Abdul Wahab1, I A Janahi, M M Marafia
1Department of Pediatrics, Hamad Medical Corporation, Doha, Qatar. atiqa@qatar.net.qa
Insights
Cystic fibrosis (CF) should be considered in the Arab world, as demonstrated by an Egyptian infant with the N1303K mutation presenting with alkalosis and pancreas insufficiency. This highlights the importance of recognizing CFTR mutations in diverse populations.
Area of Science:
- Medical Genetics
- Pediatrics
- Biochemistry
Background:
- Cystic Fibrosis (CF) is a genetic disorder caused by mutations in the Cystic Fibrosis Transmembrane conductance Regulator (CFTR) gene.
- The N1303K mutation in exon 21 is a common CFTR mutation.
- Genetic screening for CFTR mutations is crucial for early diagnosis and management.
Observation:
- An Egyptian infant presented with clinical manifestations including alkalosis, electrolyte disturbance, and pancreas insufficiency.
- The infant was found to have the N1303K mutation in the CFTR gene.
- This case underscores the presence of CF in the Arab world.
Findings:
- The N1303K CFTR mutation can lead to significant clinical symptoms in infants.
- The study reviews the frequency and distribution of the N1303K mutation in the Middle East.
- Early identification of CFTR mutations is vital for affected infants.
Implications:
- There is a need to increase awareness and diagnostic capabilities for cystic fibrosis in the Arab world.
- Understanding the prevalence of specific CFTR mutations like N1303K in different regions is essential for genetic counseling and targeted therapies.
- This case contributes to the broader understanding of CFTR mutation impact across diverse ethnicities and geographic locations.
Abstract:
An Egyptian infant with the common CFTR mutation N1303K in exon 21 developed alkalosis, electrolyte disturbance, and pancreas insufficiency. We emphasized the need to consider the possibility of cystic fibrosis (CF) in the Arab world. The frequency of N1303K mutation in the Middle East and its distribution are both reviewed.
More Related Videos
Related Concept Videos
Cystic Fibrosis: Pathogenesis
CF is primarily caused by a genetic mutation in a chromosome 7 gene coding for the cystic fibrosis transmembrane conductance regulator (CFTR) protein. The most common gene mutation leading to CF is the ΔF508 mutation, but...
Barrett Esophagus-I: Introduction
This constant acid exposure transforms the esophagus's pink mucosal lining (stratified squamous epithelium) into a type of lining more similar...
Renal Tubule and Collecting Duct
Proximal Convoluted Tubule (PCT):
The PCT is the initial segment of the renal tubule, extending from the Bowman's capsule that encloses the glomerulus. Its convoluted structure and microvilli-lined cells increase the surface area for reabsorption. The PCT reabsorbs glucose, amino acids, sodium, and water from the filtrate, ensuring essential...
Glucose Transporters
Facilitated diffusion-glucose transporters (GLUTs) are encoded by the solute-linked carrier (SLC) family 2, subfamily A gene family, or SLC2A. The 14 GLUT protein members are distributed into three classes:
Barrett Esophagus-II: Clinical Manifestations and Management
To diagnose Barrett's esophagus, healthcare providers often recommend an endoscopy for those showing symptoms of acid reflux. The procedure entails...
Giardiasis

