Special Drug Use-results Survey for Long-term Use (Fostamatinib)

Special Drug Use-results Survey for Long-term Use (Fostamatinib)

The purpose of this survey is evaluating the safety and efficacy of long-term administration of fostamatinib for Japanese patients with chronic idiopathic thrombocytopenic purpura under actual conditions of use.

The purpose of this survey is evaluating the safety and efficacy of long-term administration of fostamatinib for Japanese patients with chronic idiopathic thrombocytopenic purpura under actual conditions of use.

Inclusion Criteria:

• Patients with chronic idiopathic thrombocytopenic purpura who are treatment with fostamatinib for the first time.