SLC5A1 Mutations in Saudi Arabian Patients With Congenital Glucose-Galactose Malabsorption.
PMID 28753187 | DOI 10.1097/MPG.0000000000001694 · Journal of pediatric gastroenterology and nutrition · 2018 · View on PubMed ↗
Congenital glucose-galactose malabsorption (cGGM) is a rare autosomal recessive disorder, caused by mutations in the SLC5A1 gene, encoding the sodium/glucose cotransporter 1, which may result in severe life-threatening osmotic diarrhea due to the accumulation of unabsorbed sugars in the intestinal lumen. If treated early with elimination of glucose and galactose from the diet, patients usually recover and develop normally. We present clinical and molecular data from 16 unrelated cGGM diagnosed Saudi patients from consanguineous families with majority of them having previous positive family history of cGGM. Sanger sequencing for the full coding regions of SLC5A1 for all patients resulted in the identification of 4 allelic variants in a homozygous state. Two mutations are novel; c.265G>A (p.G89R) and c.1304 G>A (p.G435D), and 2 have been previously reported to cause cGGM, c.765 C>G (p.C255W) and c.1136 G>A (p.R379Q). This is the first report delineating the clinical and molecular basis of cGGM in patients from this region.
Validated evidence
| Type | Entity | Source evidence | Confidence | Extractor |
|---|---|---|---|---|
| gene | SLC5A1 | “SLC5A1 Mutations in Saudi Arabian Patients With Congenital Glucose-Galactose Malabsorption.” | 0.98 | hgnc_dict_v1 |
| population | Saudi Arabia | “SLC5A1 Mutations in Saudi Arabian Patients With Congenital Glucose-Galactose Malabsorption. We present clinical and molecular data from 16 unrelated cGGM diagnosed Saudi patients from consanguineous families with majority of them having previous positive family history of cGGM.” | 0.95 | saudi_context_rules_v1 |
| variant | c.265G>A | “Two mutations are novel; c.265G>A (p.G89R) and c.1304 G>A (p.G435D), and 2 have been previously reported to cause cGGM, c.765 C>G (p.C255W) and c.1136 G>A (p.R379Q).” | 0.95 | hgvs_regex_v1 |
| variant | p.G89R | “Two mutations are novel; c.265G>A (p.G89R) and c.1304 G>A (p.G435D), and 2 have been previously reported to cause cGGM, c.765 C>G (p.C255W) and c.1136 G>A (p.R379Q).” | 0.95 | hgvs_regex_v1 |
| variant | p.G435D | “Two mutations are novel; c.265G>A (p.G89R) and c.1304 G>A (p.G435D), and 2 have been previously reported to cause cGGM, c.765 C>G (p.C255W) and c.1136 G>A (p.R379Q).” | 0.95 | hgvs_regex_v1 |
| variant | p.C255W | “Two mutations are novel; c.265G>A (p.G89R) and c.1304 G>A (p.G435D), and 2 have been previously reported to cause cGGM, c.765 C>G (p.C255W) and c.1136 G>A (p.R379Q).” | 0.95 | hgvs_regex_v1 |
| variant | p.R379Q | “Two mutations are novel; c.265G>A (p.G89R) and c.1304 G>A (p.G435D), and 2 have been previously reported to cause cGGM, c.765 C>G (p.C255W) and c.1136 G>A (p.R379Q).” | 0.95 | hgvs_regex_v1 |