Phase I Study to Assess the Safety, Tolerability, Pharmacokinetics and Pharmacodynamics of SP-8008

Inclusion Criteria: 1. Healthy males 2. Age 18 to 55 years of age at the time of signing informed consent 3. Body mass index of 18.0 to 32.0 kg/m2 as measured at screening 4. Good state of health (mentally and physically) as indicated by a comprehensive clinical assessment (detailed medical history and a complete physical examination), electrocardiogram (ECG) and laboratory investigations (haematology, coagulation, clinical chemistry and urinalysis) and bleeding time (bleeding time may be measured on Day 1) 5. Must be willing and able to communicate and participate in the whole study 6. Must provide written informed consent 7. Must agree to adhere to the contraception requirements Exclusion Criteria: 1. Female subjects 2. Subjects who had received any investigator medicinal product (IMP) in a clinical research study within the 3 months or 90 days prior to Day 1 3. Subjects who were study site employees, or immediate family members of a study site or sponsor employee 4. Subjects who had previously been enrolled in this study 5. History of any drug or alcohol abuse in the past 2 years 6. Regular alcohol consumption \>21 units per week (1 unit = ½ pint beer, or a 25 mL shot of 40% spirit, 1.5 to 2 units = 125 mL glass of wine, depending on type) 7. Current smokers and those who had smoked within the last 12 months. A confirmed breath carbon monoxide (CO) reading of greater than 10 ppm at screening or admission Current users of e-cigarettes and nicotine replacement products and those who had used these products within the last 12 months 8. Current users of e-cigarettes and nicotine replacement products and those who had used these products within the last 12 months 9. Subjects without suitable veins for multiple venepunctures/cannulation as assessed by the investigator or delegate at screening 10. Clinically significant abnormal biochemistry, haematology, coagulation or urinalysis as judged by the investigator including investigator medicinal product (PT) \>14 s, investigator medicinal product (aPTT) \> reference laboratory values, platelet count ≤100,000 mm3, alanine aminotransferase (ALT)/ aspartate aminotransferase (AST) \>2× upper limit of normal, white blood cells ≤3000 × 109/L, haemoglobin \<11 g/dL, total bilirubin \>20 µmol/L, bleeding time \>15 min 11. Any clinically significant medical disorders increasing the tendency to bleed easily, or a history of recent trauma or surgery, or a history of gout and renal stones 12. Confirmed positive drugs of abuse test result 13. Positive hepatitis B surface antigen (HBsAg), hepatitis C virus antibody (HCV Ab) or human immunodeficiency virus (HIV) results 14. Evidence of renal impairment at screening, as indicated by an estimated Creatinine Clearance (CrCl) of \<80 mL/min using the Cockcroft-Gault equation 15. History of clinically significant cardiovascular, renal, hepatic, chronic respiratory or gastrointestinal disease, neurological or psychiatric disorder, as judged by the investigator 16. Serious adverse reaction (SAE) or serious hypersensitivity to any drug or the formulation excipients 17. Presence or history of clinically significant allergy requiring treatment, as judged by the investigator. Hay fever was allowed unless it was active 18. Donation or loss of greater than 400 mL of blood within the previous 3 months 19. Subjects who were taking, or had taken, any prescribed or over-the-counter drug, herbal remedies or supplements in the 14 days before IMP administration; these included fish oil/Omega-3, St. John's wort, ginseng, garlic, gingko, saw palmetto, echinacea, yohimbine, liquorice and black cohosh. Exceptions may have applied on a case by case basis, if considered not to interfere with the objectives of the study, as agreed by the principal investigator (PI) and sponsor's medical monitor. 20. Failure to satisfy the investigator of fitness to participate for any other reason