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  • Title: [Long-term outcome of children treated with the ISKDC regimen for the first episode of INS].
    Author: Hirano D, Nishizaki N, Kanai H, Hara S, Ohtomo Y, Umino D, Fujinaga S.
    Journal: Nihon Jinzo Gakkai Shi; 2010; 52(8):1029-36. PubMed ID: 21254699.
    Abstract:
    We retrospectively analyzed the long-term outcome of 82 children (SRNS group, 10; SDNS group, 35; IRNS group, 37) who were initially treated with the ISKDC regimen at the Saitama Children's Medical Center. The ISKDC regimen consisted of PSL 60 mg/m2/day for 4 weeks, followed by 40 mg/m2 on alternate days for another 4 weeks. The aims of our study were to identify factors at onset that could predict the relapse pattern after using the initial ISKDC regimen, and to assess the prognosis and renal histology after long-term CsA therapy in 31 children. All of six asymptomatic children without edema and identified by chance proteinuria on a urinary screening program had an extremely favorable clinical course. Initial remission time of 9 or more days and the time interval from the initial therapy to the first relapse were significant predictors of steroid dependency. The sensitivity and specificity of these findings were 100% and 90%, respectively, with a positive predictive value of 95% and a negative predictive value of 100%. In addition, after the introduction of CsA therapy, termination of steroid therapy was achieved in 56% of patients with SRNS, and 64% of SDNS, respectively. However, after CsA therapy was tapered or stopped, most patients (21/20: 95%) developed relapses of NS. Of these, 76% (16/21) returned to SDNS, resulting in the reintroduction of CsA. Ten of 22 patients taking CsA (mean duration 31.3 months) had chronic nephrotoxicity. In conclusion, the initial ISKDC regimen is useful for the early prediction of whether or not the patient will develop SDNS. When pediatric nephrologists introduce CsA therapy in children with SDNS, an alternative strategy after long-term use of the agent should be considered.
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