PIK3C2A and acute kidney injury: Regarding the initial CPK levels, compared with the reference group (Q1), the ORs for AKI occurrence were 5.96-fold higher in the initial CPK 1871~4441 U/L group (Q2) (95% CI, 1.42–24.99, p = 0.015) and 6.43-fold higher in Q3 (95% CI, 1.23–33.65, p = 0.028).