Absolute Bioavailability and ADME Study of Savolitinib in Healthy Male Subjects

Inclusion criteria

• Provision of signed and dated, written informed consent prior to any study specific procedures.
• Healthy male subjects aged 30 to 65 years at the time of signing informed consent with suitable veins for cannulation or repeated venepuncture.
• Body mass index (BMI) of 18.0 to 32.0 kg/m2 inclusive and weigh at least 50 kg and no more than 100 kg inclusive, as measured at screening.
• Must be willing and able to communicate and participate in the whole study
• Must have regular bowel movements (i.e., average stool production of ≥1 and

≤3 stools per day).

• Adequate coagulation parameters, defined as: International Normalisation Ratio (INR) <1.5 x ULN and activated partial thromboplastin time (aPTT) <1.5 x ULN.
• Must agree to adhere to the contraception requirements defined in Section 9.4. Subjects aged under 45 years must have had a vasectomy. Subjects must be willing to agree to not father children for a further 6 months after the study follow-up visit.

Exclusion criteria

• History of any clinically significant disease or disorder which, in the opinion of the investigator, may either put the volunteer at risk because of participation in the study, or influence the results or the volunteer's ability to participate in the study.
• History or presence of GI, hepatic or renal disease, or any other condition known to interfere with absorption, distribution, metabolism, or excretion of drugs.
• Acute diarrhoea or constipation in the 7 days before administration of IMP in the study. If screening occurs >7 days before the first study day, this criterion will be determined on first study day.
• Any clinically significant illness, medical/surgical procedure, or trauma within 4 weeks of the first administration of IMP.
• Any clinically significant abnormalities in clinical chemistry, haematology, or urinalysis results, as judged by the investigator. Subjects with Gilbert's Syndrome are not allowed.
• Any clinically significant abnormal findings in vital signs, as judged by the investigator.
• Any clinically significant abnormalities on 12-lead ECG, as judged by the investigator. Mean resting corrected QT interval (QTcF) >450 msec on screening or pre-dose (Part 1 only) obtained from 3 ECGs or factors that may increase the risk of QTcF prolongation or any clinically important abnormalities in rhythm, conduction or morphology of resting electrocardiograms (ECGs), e.g., complete left bundle branch block, third degree heart block, second degree heart block, PR interval >250 msec.
• Any factors that may increase the risk of QTcF prolongation such as chronic hypokalaemia not correctable with supplements, congenital or familial long QT syndrome, or family history of unexplained sudden death under 40 years of age in first-degree relatives or any concomitant medication known to prolong the QT interval and cause Torsade de Pointes.
• Any positive result on screening for serum hepatitis B surface antigen, hepatitis C antibody, and human immunodeficiency virus (HIV) antibody.
• Known or suspected history of drug abuse, as judged by the investigator.
• Has received another new chemical entity (defined as a compound which has not been approved for marketing; including radiolabelled chemical entity) within 90 days or five elimination half-lives, whichever is longer, of the first dosing date in this study. The period of exclusion lasts for 90 days or five elimination halflives after the final dose or 1 month after the last visit, whichever is the longest. Note: subjects consented and screened, but not administered IMP in this study or a previous Phase I study, are not excluded
• Plasma donation within 1 month of screening or any blood donation/loss more than 500 mL during the 3 months prior to screening.
• History of severe allergy/hypersensitivity or ongoing allergy/hypersensitivity, as judged by the investigator or history of hypersensitivity to drugs with a similar chemical structure or class to savolitinib. Hay fever is allowed unless it is active
• Evidence of current SARS-CoV-2 infection.
• History of any alcohol abuse in the past 2 years.
• Regular alcohol consumption in males >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).
• Current smokers or those who have smoked or used nicotine products (including e-cigarettes) within the 6 months prior to screening. A confirmed breath carbon monoxide reading of greater than 10 ppm at screening or admission.
• Subjects with pregnant or lactating partners.
• Radiation exposure, including that from the present study, excluding background radiation but including diagnostic x-rays and other medical exposures, exceeding 5 mSv in the last 12 months or 10 mSv in the last 5 years. No occupationally exposed worker, as defined in the Ionising Radiation Regulations 2017 [9], shall participate in the study.
• Subjects who have been administered IMP in an 14C ADME study in the last 12 months.
• Subjects with a history of cholecystectomy or gall stones.
• Positive screen for drugs of abuse or alcohol at screening or on each admission to the study centre.
• Subjects with estimated glomerular filtration rate [eGFR] of <60 mL/min/1.73m2, as measured at screening, using the chronic kidney disease epidemiology collaboration (CKD-EPI) equation, or evidence of renal impairment in subjects with eGFR between 60 and 90 mL/min/1.73m2.
• Subjects with a presence of any of the following at screening:

<LLN for haemoglobin value, WBC, neutrophil count, lymphocytes and platelet count

• Total bilirubin, ALT/AST>ULN at screening.
• Use of drugs with enzyme-inducing properties such as St John's Wort within 3 weeks prior to the first administration of IMP.
• Use of any prescribed or nonprescribed medication including antacids, analgesics (other than paracetamol/acetaminophen), herbal remedies, megadose vitamins (intake of 20 to 600 times the recommended daily dose) and minerals during the two weeks prior to the first administration of IMP or longer if the medication has a long half-life.
• Excessive intake of caffeine-containing drinks or food (e.g., coffee, tea, chocolate) as judged by the investigator. Excessive intake of caffeine defined as the regular consumption of more than 600 mg of caffeine per day (e.g., >5 cups of coffee) or would likely be unable to refrain from the use of caffeine-containing beverages during confinement at the investigational site.
• Involvement of any AstraZeneca, Quotient or study site employee or their close relatives.
• Subjects who report to have previously received savolitinib.
• Judgment by the investigator that the volunteer should not participate in the study if they have any ongoing or recent (i.e., during the screening period) minor medical complaints that may interfere with the interpretation of study data or are considered unlikely to comply with study procedures, restrictions, and requirements.
• Subjects who cannot communicate reliably with the investigator.
• Vulnerable subjects, e.g., kept in detention, protected adults under guardianship, trusteeship, or committed to an institution by governmental or juridical order.
• Non-leukocyte depleted whole blood transfusion within 120 days of the date of the genetic sample collection or previous bone marrow transplant.
• History of latent or chronic infections (e.g., tuberculosis, recurrent sinusitis, genital herpes, recurrent urinary tract infections) or at risk of infection (surgery, trauma or significant infection within previous 90 days, history of skin abscesses within previous 90 days prior to first IMP dose).
• Planned in-patient surgery, dental procedure or hospitalisation during the study.
• Failure to satisfy the investigator of fitness to participate for any other reason.