Study in Healthy Males to Assess Bioavailability of Single Fostamatinib With iv Micro Tracer Dose

Inclusion Criteria: * Healthy male volunteers aged 18 to 55 years (inclusive), with a weight of at least 50 kg and a body mass index (BMI) between 18 and 30 kg/m2 (inclusive) * Male volunteers willing to use barrier contraception ie, condoms with spermicide, from the first day of the investigational product administration until 3 months after the last administration of the investigational product Exclusion Criteria: * History of any clinically significant disease or disorder * History or presence of GI, hepatic, or renal disease or any other condition known to interfere with absorption, distribution, metabolism, or excretion of drugs * Any clinically significant illness, medical/surgical procedure or trauma within 4 weeks of the first administration of drug * Volunteers who smoke more than 5 cigarettes or the equivalent in tobacco per day * Any clinically significant abnormalities in clinical chemistry, hematology or urinalysis results as judged by the Investigator