23 Xiang Xiang W W ,  Kong Kong J J ,  Chen Chen S S , et al.  Cardiac hypertrophy in vitamin D receptor knockout mice: role of the systemic and cardiac renin‐angiotensin systems Cardiac hypertrophy in vitamin D receptor knockout mice: role of the systemic and cardiac renin‐angiotensin systems . The gene discussed is VDR; the disease is hypertrophy.