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  • Title: Serum alanine aminotransferase level and intravenous immunoglobulin resistance in patients with kawasaki disease.
    Author: Masuda H, Ae R, Koshimizu TA, Kosami K, Makino N, Matsubara Y, Sasahara T, Nakamura Y.
    Journal: Clin Rheumatol; 2022 Oct; 41(10):3125-3133. PubMed ID: 35798922.
    Abstract:
    INTRODUCTION/OBJECTIVES: Serum alanine aminotransferase (ALT) elevation is considered a risk factor for resistance to initial intravenous immunoglobulin (IVIG) treatment in patients with Kawasaki disease (KD). However, serum ALT levels change dramatically during acute KD illness. We tested the hypothesis that risk assessment for initial IVIG resistance based on serum ALT elevation may differ by examination day after KD onset. METHODS: We analyzed 18,492 population-based patients who developed KD throughout Japan. First, we epidemiologically evaluated the serum ALT variation at 1‒10 days after disease onset. Second, we conducted multivariable logistic regression to determine the association between serum ALT level and initial IVIG resistance according to timing of initial hospital visit by stratifying the patients into an early group (1‒5 days after onset) and a late group (6‒10 days after onset). RESULTS: Serum ALT rapidly increased after KD onset, peaked at day 4 of illness, and then declined regardless of IVIG responsiveness. The adjusted odds ratio (OR) increased with increasing serum ALT in the early group (adjusted OR [95% CI]: 1.44 [1.25-1.66], 1.94 [1.65-2.28], and 2.22 [1.99-2.48] for serum ALT 50-99, 100-199, and ≥ 200 IU/L, respectively; reference ALT level: 1-49 IU/L). No significant association was observed in the late group. CONCLUSIONS: The findings indicate that risk assessment for initial IVIG resistance based on serum ALT level may only be reliable for patients with KD who visit hospitals during early illness, specifically 1-5 days after disease onset. Key Points Serum alanine aminotransferase level differed markedly according to examination days after Kawasaki disease onset. Serum alanine aminotransferase level declined toward normal range after day 5 of illness regardless of intravenous immunoglobulin responsiveness. Elevated serum alanine aminotransferase level was no longer a significant risk factor for initial intravenous immunoglobulin resistance when measured on delayed hospital visits. Risk assessment for initial intravenous immunoglobulin resistance based on serum alanine aminotransferase level may only be reliable for patients who visit hospitals during early illness, specifically 1-5 days after disease onset.
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