Antihypertensive therapy remains the most effective strategy for slowing the progression of chronic kidney disease (CKD).
However, in proteinuric nephropathies, calcium channel blockers (CCBs) are less effective than other antihypertensives unless
normotension is achieved. This is because the glomerular capillaries, rather than larger vessels, are the primary site of
hypertensive injury in proteinuric nephropathies. CCBs impair renal autoregulation, which protects glomerular capillaries
against the transmission of systemic pressures. CCBs’ renoprotective inferiority in the comparator group likely accounts for
the greater renoprotection observed with renin-angiotensin system blockade rather than blood pressure (BP)-independent renoprotective
superiority. Nevertheless, CKD patients are at greater absolute risk for cardiovascular events rather than end-stage renal
disease. Therefore, if the needed BP reductions cannot be achieved with other agents, it may be appropriate to use CCBs because
of their antihypertensive effectiveness, provided care is taken to ensure normotension and to closely monitor proteinuria
and renal disease progression.