PLA2R1 and hypertensive disorder: With the deterioration of tubulointerstitial injury from grade 0 to 3 (Table 3), the patients became older, and presented with higher positivity rate of serum anti-PLA2R antibodies, higher level of urinary protein excretion, lower level of serum albumin, lower level of eGFR, higher percentage of hypertension, and lower level of hemoglobin.