A Phase II Study of the PARP Inhibitor Olaparib (AZD2281) Alone and in Combination with AZD1775, AZD5363, or AZD6738 in Advanced Solid Tumors - OLAPCO (Olaparib Combinations)

The primary objective of this phase II trial is to determine tumor overall response rate
(ORR) in molecularly selected patients with measurable disease as assessed by the Response
Evaluation Criteria in Solid Tumors (RECIST), before versus after 16 weeks of treatment
across tumor types in each arm of the study.

Inclusion Criteria:

- Histologically documented metastatic cancer (solid tumors, not including hematologic
malignancies)

- Patients who have received standard first-line therapy for metastatic cancer (except
for the tumors for which no first-line therapy exists) and in whom a trial of targeted
therapy is considered the best available treatment option. Eligible patients should
not have available therapies that will convey clinical benefit.

- Progressive cancer at the time of study entry

- Measurable disease by RECIST v1.1

- Age ≥ 18 years

- Life expectancy ≥ 16 weeks

- Eastern Cooperative Oncology Group Performance Status (ECOG PS) score of 0 or 1
(APPENDIX A: Performance Status Criteria)

- Able to understand the nature of this trial and provide written informed consent

- Patient is willing and able to comply with the protocol for the duration of the study
including undergoing treatment and scheduled visits and examinations including follow
up.

- Molecular testing or appropriate IHC results from CLIA-certified laboratories used for
patient eligibility should be obtained from the most recent tumor biopsy (baseline
tumor biopsies and on-progression tumor biopsies are optional)

- No previous treatment with olaparib or any other drug sharing the same target. Prior
treatment with PARP inhibitor monotherapy is allowed in the combination arms.

- Prior radiation therapy is allowed. Patients must not have received radiation therapy
within 21 days prior to the initiation of study treatment.

- Other therapies: Prior experimental (non-FDA approved) therapies and immunotherapies
are allowed. Patients must not have received these therapies for 21 days or five
half-lives of the drug (whichever is less) prior to the initiation of study treatment
and must have full recovery from any acute clinically significant effects of these
therapies.

- Adequate hematologic function defined as:

- Absolute neutrophil count (ANC) ≥ 1500/μL

- White blood cells (WBC) > 3x109/L

- Hemoglobin (Hgb) ≥ 10 g/dL (may be achieved with erythropoietin agents; no blood
transfusions in the 28 days prior to entry)

- Platelets ≥ 100,000/μL

- No features suggestive of MDS/AML on peripheral blood smear

- Adequate renal and liver function defined as:

- Alanine aminotransferase (ALT) and aspartate aminotransferase (AST) ≤ 2.5 × the
upper limit of normal (ULN) (≤ 5 × ULN if considered due to primary or metastatic
liver involvement)

- Total bilirubin ≤ 1.5 ×ULN

- Alkaline phosphatase ≤ 2× ULN (≤ 5 × ULN if considered due to tumor)

- Serum creatinine ≤ 1.5 ULN

- At least one lesion, not previously irradiated, that can be accurately measured at
baseline as ≥ 10 mm in the longest diameter (except lymph nodes which must have short
axis ≥ 15 mm) with computed tomography (CT) or magnetic resonance imaging (MRI) or ≥
10 mm with calipers by clinical exam OR At least one lesion (measurable and/or
non-measurable) that can be accurately assessed by CT/MRI/plain x-ray/clinical exam at
baseline and follow up visits.

- Women of child-bearing potential must have a negative pregnancy test (urine or serum)
within 28 days prior to starting the study drug. Both males and females must agree to
adequate birth control if conception is possible during the study and for 6 months
after the last dose. Female patients are considered to not be of child-bearing
potential if they have a history of tubal ligation or hysterectomy or are
post-menopausal with a minimum of 1 year without menses.

Exclusion Criteria:

- Patients with known germline BRCA mutations in breast cancers will be excluded from
the study, however testing is not required for inclusion in the study.

- Involvement in the planning and/or conduct of the study (applies to both AstraZeneca
staff and/or staff at the study site)

- Prior standard of care cancer chemotherapy, immunotherapy, or radiotherapy <21 days
prior to first dose of study agent(s)

- Patients with hematologic malignancies (includes patients with myelodysplastic
syndrome/acute myeloid leukemia).

- Patients with primary CNS malignancies

- Patients must not have received allogeneic stem cell transplant

- Concurrent administration of any other anti-cancer therapy

- Bisphosphonates and Denosumab for bone metastases are allowed if started at least
4 weeks prior to treatment with study agent(s).

- Octreotide is allowed if dose is stable for >3 months with no worsening of
carcinoid syndrome

- Hormonal therapy with luteinizing hormone-releasing hormone (LHRH) analogues for
medical castration in patients with castrate-resistant prostate cancer is
permitted

- Patients who have not demonstrated stable recover (28 days or greater) from ≤ CTCAE
grade 2 non-hematological toxicities related to prior therapy such as peripheral
neuropathy or alopecia, or incomplete recovery from previous surgery, unless agreed by
the Principal Investigator (PI) and documented are not eligible to participate in this
study.

- Active or untreated brain metastases or spinal cord compression

- A scan to confirm the absence of brain metastases is not required.

- Patients with treated brain metastases or spinal cord compression are eligible if
they have minimal neurologic symptoms and evidence of stable disease (for at
least 1 month) or response on follow-up scan. The patient can receive a stable
dose of corticosteroids before and during the study if started at least 28 days
prior to initiating the study agent(s)..

- History of carcinomatous meningitis

- Patients with second primary cancer, except: adequately treated non-melanoma skin
cancer, curatively treated stage I cancers (cervix, breast, colon, lung, or prostate
as examples) or other advanced (> Stage I)solid tumors curatively treated with no
evidence of disease for ≥ 5 years.

- Patient must not have a co-morbid condition(s) that, in the opinion of the
investigator, prevent safe treatment.

- Immunocompromised patients, e.g., patients who are known to be serologically positive
for human immunodeficiency virus (HIV) and are receiving antiviral therapy (testing is
not part of the protocol).

- Patients with known (testing is not part of the protocol) active hepatic disease
(i.e., Hepatitis B or C) due to risk of drug interactions with anti-viral therapy.

- Any of the following cardiovascular events within 6 months prior to study entry:
myocardial infarction, malignant hypertension, severe/unstable angina, symptomatic
congestive heart failure, cerebral vascular accident, or transient ischemic attack

- History or presence of clinically significant ventricular or atrial dysrhythmia >
Grade 2 (NCI CTCAE v4.0)

- Patients with chronic, rate-controlled atrial arrhythmias who do not have other
cardiac abnormalities are eligible.

- Major surgery within 3 weeks prior to first dose of study treatment, and patients must
have recovered from the effects of surgery

- Patients unable to swallow orally administered medication and patients with
gastrointestinal disorders likely to interfere with absorption of the study medication

- Refractory nausea and vomiting, chronic gastrointestinal diseases (e.g. inflammatory
bowel disease) or significant bowel resection that would preclude adequate absorption

- Patients with uncontrolled seizures

- Inadequate bone marrow reserve within past 28 days prior to study treatment as
demonstrated by:

- Absolute neutrophil count (ANC) < 1500/μl,

- WBC ≤ 3x109/L

- Platelet count (PLT) < 100,000/μl, or

- Hemoglobin (Hgb) < 10 g/dL

- Blood (packed red blood cells, platelets) transfusions within 1 month prior to study
start

- Whole blood transfusion in the last 120 days prior to entry to the study

- Patients with concomitant use of drugs, herbal supplements and/or ingestion of foods
known to strongly modulate CYP3A4 enzyme activity as specified in the drug specific
appendix.

- Women who are pregnant or lactating (breastfeeding)

- Patients with a known hypersensitivity to olaparib or any of the excipients of the
product.

- Patients with a known hypersensitivity to the combination/comparator agent

- Any other severe acute or chronic medical or psychiatric condition or laboratory
abnormality that may increase the risk associated with study participation or may
interfere with the interpretation of study results

- Patients considered a poor medical risk due to a serious, uncontrolled medical
disorder, non-malignant systemic disease or active, uncontrolled infection. Examples
include, but are not limited to, uncontrolled ventricular arrhythmia, superior vena
cava syndrome, extensive bilateral lung disease on HRCT scan or any psychiatric
disorder that prohibits obtaining informed consent

- Psychological, familial, sociological, or geographical conditions that do not permit
compliance with the protocol