This study will be conducted in healthy post-menopausal female subjects to assess the pharmacokinetics (PK) of Camizestrant (AZD9833) when administered alone and in combination with Itraconazole.

This open-label, fixed sequence study will comprise of:

• A screening period of 28 days;
• A fixed sequence of three treatment period:

Treatment Period 1: Camizestrant only, Treatment Period 2: Itraconazole only, Treatment Period 3: Camizestrant and Itraconazole in combination.

• A Follow-up Visit at 7 to 14 days after the last Camizestrant PK sample in Period 3.

There will be a washout period of 7 to 10 days between Period 1 and Period 2. Each subject will be involved in the study for approximately 8 or 9 weeks.

Inclusion Criteria:

• Healthy post-menopausal female subjects aged 50 to 70 years with suitable veins for cannulation or repeated venipuncture

• Subjects must be post-menopausal by fulfilling the following criterion:

  a. Post-menopausal defined as amenorrhea for at least 12 months or more without an alternative medical or surgical cause and confirmed by an FSH result of ≥ 30 IU/L.

• Have a body mass index (BMI) between 19 and 35 kg/m2 inclusive and weigh at least 50 kg and no more than 100 kg inclusive.

• Must agree to not use warfarin or phenytoin (and other coumarin-derived vitamin K antagonist anticoagulants) from screening, and for 2 weeks after last administration of the study drug.

Exclusion Criteria:

• History of any clinically significant disease or disorder which may either put the subject at risk because of participation in the study

• History or presence of gastrointestinal, hepatic, or renal disease, or any other condition known to interfere with absorption, distribution, metabolism, or excretion of drugs.

• History of clinically significant cardiovascular, chronic respiratory, neurological, or psychiatric disorder

• History of or ongoing clinically significant visual disturbances including but not limited to visual hallucinations, migraine with visual symptoms, blurred vision, frequent floaters/flashes associated with other symptoms such as dizziness

• Any clinically significant illness, medical/surgical procedure, or trauma within 4 weeks of the first administration of the study drug.

• Any clinically significant abnormal findings in vital signs or 12-lead Electrocardiogram (ECG).

• 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 or alcohol abuse.

• History of significant allergy or hypersensitivity.

• Current smokers or those who have smoked or used nicotine products (including e-cigarettes and nicotine replacement products) within the 3 months prior to screening.

• Use of systemic oestrogen-containing hormone replacement therapy within 6 months prior to first dose in the study.

• Have any active indication for therapeutic anticoagulation, and/or having taken an anticoagulant within 14 days of beginning the study.

• Any of the following signs or confirmation of COVID-19 infection:

  1. Subject has a positive test for SARS-CoV-2 prior to admission.
  2. Clinical signs and symptoms consistent with COVID-19 (eg, fever, dry cough, dyspnoea, sore throat, fatigue) or confirmed infection by appropriate laboratory test within the last 4 weeks prior to screening or at admission.
  3. Subject has been previously hospitalized with COVID-19 infection within the last 12 months.

Qualified researchers can request access to anonymized individual patient-level data from AstraZeneca group of companies sponsored clinical trials via the request portal. All request will be evaluated as per the AZ disclosure commitment: https://astrazenecagrouptrials.pharmacm.com/ST/Submission/Disclosure.

Yes, indicates that AZ are accepting requests for IPD, but this does not mean all requests will be shared.

AstraZeneca will meet or exceed data availability as per the commitments made to the EFPIA Pharma Data Sharing Principles. For details of our timelines, please refer to our disclosure commitment at https://astrazenecagrouptrials.pharmacm.com/ST/Submission/Disclosure.

When a request has been approved AstraZeneca will provide access to the deidentified individual patient-level data in an approved sponsored tool . Signed Data Sharing Agreement (non-negotiable contract for data accessors) must be in place before accessing requested information. Additionally, all users will need to accept the terms and conditions of the SAS MSE to gain access. For additional details, please review the Disclosure Statements at https://astrazenecagrouptrials.pharmacm.com/ST/Submission/Disclosure.