Japanese drugmaker Kyowa Hakko Kirin (TYO: 4151) says that it has filed an application based on evidence in the public domain to Japan's Ministry of Health, Labor and Welfare (MHLW) seeking approval for additional dosage and administration for intramuscular administration and dosage of Leunase (L-asparaginase) Injection 5000 KU and Leunase Injection 10000 KU.
Leunase is indicated for patients with acute leukemia and malignant lymphoma, and its efficacy is based on the depletion of L-asparagine, which is required by tumor cell growth. However, once hypersensitivity reactions including anaphylaxis occurred, subsequently administration would be difficult. In Japan, Leunase is indicated only as intravenous injection, however it is reported that the incidence of hypersensitivity is lower for intramuscular injection than for intravenous injection.
Application based on evidence in the public domain deemed acceptable
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