Kazuhiko Kumagai

Polymorphisms in the thymidylate synthase and methylenetetrahydrofolate reductase genes and sensitivity to the low-dose methotrexate therapy in patients with rheumatoid arthritis

Kazuhiko Kumagai, Keiko Hiyama, Tetsu Oyama et al. · International Journal of Molecular Medicine · 2003 · 165 citations

Medicine, Genetics, Molecular Genetics +13

Allelotype frequency of the thiopurine methyltransferase (TPMT) gene in Japanese

Kazuhiko Kumagai, Keiko Hiyama, Shinichi Ishioka et al. · Pharmacogenetics · 2001 · 107 citations

Veterinary Medicine, Genetics, Molecular Genetics +17

Thiopurine Methyltransferase Genotype and the Toxicity of Azathioprine in Japanese.

Shinichi Ishioka, Keiko Hiyama, Hiroe Sato et al. · Internal Medicine · 1999 · 54 citations · Full text

Veterinary Medicine, Genetics, Pharmacology +14

Lymphocyte transformation test is not helpful for the diagnosis of methotrexate-induced pneumonitis in patients with rheumatoid arthritis

Shintaro Hirata, Noboru Hattori, Kazuhiko Kumagai et al. · Clinica Chimica Acta · 2009 · 18 citations

Life Sciences, Immunology, Internal Medicine +15

Grade 3 Lymphomatoid Granulomatosis in a Patient Receiving Methotrexate Therapy for Rheumatoid Arthritis

Hiroshi Oiwa, Keichiro Mihara, Takanobu Kan et al. · Internal Medicine · 2014 · 18 citations · Full text

Medicine, Immunology, Pathology +14