Genetic deletion of TASK1, but not TASK3, abolished the depolarizing inward current and catecholamine secretion in response to acidity, whereas it did not affect the resting current level.
Birk Barel syndrome also known as KCNK9 imprinting syndrome is a rare developmental disorder associated with a loss-of-function variant in KCNK9, an imprinted gene with maternal expression on the 8th chromosome encoding the TASK3 (TWIK-related acidity inhibited K + -channel 3).