solute carrier family 12 (sodium/potassium/chloride transporters)
Solute carrier family 12 member 1
Electrically silent transporter system. Mediates sodium and chloride reabsorption. Plays a vital role in the regulation of ionic balance and cell volume.
Defects in SLC12A1 are the cause of Bartter syndrome type 1 (BS1) [MIM:601678]. BS refers to a group of autosomal recessive disorders characterized by impaired salt reabsorption in the thick ascending loop of Henle with pronounced salt wasting, hypokalemic metabolic alkalosis, and varying degrees of hypercalciuria. BS1 is a life-threatening condition beginning in utero, with marked fetal polyuria that leads to polyhydramnios and premature delivery. Another hallmark of BS1 is a marked hypercalciuria and, as a secondary consequence, the development of nephrocalcinosis and osteopenia.