Low Serum IgG Levels at Disease Onset Predict Nephritis Development in Children with IgA Vasculitis

Yuna Hiwatari, The Jikei University School of Medicine, Tokyo, Tokyo, Japan; Daishi Hirano, The Jikei university school of medicine, Ohta-ku, Tokyo, Japan; Aya Saito, Department of Pediatrics, The Jikei University School of Medicine, Tokyo, Japan, Minato-ku, Tokyo, Japan; Akira Ito, The Jikei University School of Medicine,, Atsugi, Kanagawa, Japan; Saori Miwa, The Jikei University School of Medicine, Tokyo, Tokyo, Japan; Chisato Umeda, Department of Pediatrics, the Jikei University School of Medicine, Minato-ku, Tokyo, Japan; Haruhide Sakaguchi, The Jikei University School of Medicine, Minato-ku, Tokyo, Japan; Yosuke Shoji, Pediatrics, Huchu, Tokyo, Japan; Shiho Yoshizawa, The Jikei University School of Medicine, Taito-Ku, Tokyo, Japan; Yoichi Takemasa, Department of Pediatrics, The Jikei University School of Medicine,, yokohama, Kanagawa, Japan; Kimihiko Oishi, The Jikei University School of Medicine, MInato-ku, Tokyo, Japan