CRP and episodic ataxia type 2: In multivariate logistic regression analysis, Immunocompromised status (OR:2.220, 95% CI:1.116 ~ 4.414), NLR ≥ 5.7 (OR:1.726, 95% CI:1.017 ~ 2.930), CRP ≥ 50 mg/L (OR:2.182, 95% CI:1.279 ~ 3.721) and the number of antibiotics ≥ 3 (OR:3.926, 95% CI:2.243 ~ 6.869) were risk factors for CAPA (Table 3).