ATP2B1 and Hypertension: Indeed, Okuyama and al., showed that mice lacking ATP2B1 had a higher response to CCBs for blood pressure-lowering effects than other anti-hypertensive drugs [34], and previously Tabara and al. showed that it may be a reduction in the expression of ATP2B1 which leads to raised blood pressure in those with a ATP2B1 risk allele for hypertension [35].