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The following summary is from Orphanet, a European reference portal for information on rare diseases and orphan drugs.
Orpha Number: 93608
A rare inherited form of distal renal tubular acidosis (dRTA) characterized by hyperchloremic metabolic acidosis often but not always associated with hypokalemia.
The prevalence is unknown.
Disease onset occurs in adolescence or adulthood and initial manifestations can include polyuria, polydipsia, muscle weakness and fatigue. Osteomalacia or osteopenia can occur due to calcium salt loss from the bones. Hypercalciuria, nephrolithiasis and nephrocalcinosis may result from long term chronic metabolic acidosis. Renal failure has not been described.
AD dRTA is due to mutations in the SLC4A1 gene (17q21.31) encoding the band 3 anion transport protein (AE1). This protein is found in the alpha- intercalated distal tubular cells and red blood cell membranes. Mutations in the SLC4A1 gene show a pleiotrophic effect that result in two distinct phenotypes: dRTA or red cell dysmorphologies (hereditary spherocytosis or Southeast Asian ovalocytosis) (see these terms).
This disease is inherited in an autosomal dominant manner and genetic counseling is possible.
Visit the Orphanet disease page for more resources.
Source: GARD Last updated on 05-01-20
An unknown % of people have these symptoms.
Click on a symptom to see definitions for associated terms.
|Increased urinary cortisol level|
|Abnormal nasal mucus secretion|
|Frontal upsweep of hair|
|Abnormal thyroid hormone level|
|Postnatal growth retardation|
|Stage 5 chronic kidney disease|
|Autosomal dominant inheritance|
|Periodic hypokalemic paresis|
|Renal tubular acidosis|
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