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A Phase I/II Study of MEDI4736 in Combination With Olaparib in Patients With Advanced Solid Tumors.

A Phase I/II Study of MEDI4736 (Anti-PD-L1 Antibody) in Combination With Olaparib (PARP Inhibitor) in Patients With Advanced Solid Tumors

Status
Active, not recruiting
Phases
Phase 1Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02734004
Acronym
MEDIOLA
Enrollment
264
Registered
2016-04-12
Start date
2016-03-17
Completion date
2026-09-17
Last updated
2026-07-14

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Breast, Gastric Cancers, Ovarian, SCLC

Keywords

MEDIOLA, Olaparib, MEDI4736, Bevacizumab, Ovarian cancer, Breast cancer, Small Cell Lung Cancer, Gastric Cancer, Phase I/II, Adults, PDL-1

Brief summary

The purpose of this study is to look at the effectiveness, safety, and antitumor activity of study drugs MEDI4736 in combination with olaparib (modules 1, 2, 3, 4, 5 and 7) and MEDI4736 in combination with olaparib and bevacizumab (module 6). It will also examine what happens to the study drugs in the body and investigate how well the combination between MEDI4736, olaparib and bevacizumab is tolerated.

Detailed description

This is a phase I/II open-label, multicenter study to evaluate the safety, tolerability, pharmacokinetics (PK) and antitumor activity of MEDI4736 in combination with olaparib in patients with advanced solid tumors, selected based on a rationale for response to olaparib. Patients will be poly (adenosine diphosphate-ribose) polymerase (PARP)-inhibitor and immunotherapy (IMT)-naïve (defined as no prior exposure to PARP inhibitors or IMT, including, but not limited to, other anti-cytotoxic T-lymphocyte-associated protein 4 \[CTLA-4\], anti-programmed cell death 1 \[PD-1\], anti-programmed death-ligand 1 \[PD-L1\] monoclonal antibodies, or any other antibody or drug specifically targeting T-cell co-stimulation or checkpoint pathways). The 4 initial stage cohorts (Modules 1 to 4) include patients with relapsed small cell lung cancer (SCLC), germline BRCA mutated (gBRCAm) metastatic human epidermal growth factor receptor 2 (HER2)-negative breast cancer, gBRCAm platinum-sensitive relapsed ovarian cancer, and gastric cancer. The data cut-off occurred once all 4 Modules had reached last patient first visit (LPFV) + 2 years and all 4 cohorts had observed a median value for PFS. Second stage cohorts (Modules 5 to 7) include patients with relapsed gBRCAm platinum-sensitive relapsed ovarian cancer and non gBRCAm platinum-sensitive relapsed ovarian cancer. The final data cut-off will be once Modules 6 and 7 have observed a median value for overall survival. At this timepoint, the clinical study database will close to new data.

Interventions

DRUGOlaparib

Olaparib

DRUGMEDI4736

MEDI4736

DRUGBevacizumab

Bevacizumab

Sponsors

AstraZeneca
Lead SponsorINDUSTRY
IQVIA Pty Ltd
CollaboratorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 130 Years
Healthy volunteers
No

Inclusion criteria

* Patients must have histologically or cytologically confirmed progressive advanced or metastatic solid tumor of one of the following: * Platinum sensitive relapsed small cell lung cancer (module 1) * gBRCAm HER2-negative metastatic breast cancer (module 2) * gBRCAm ovarian cancer (modules 3 and 5) * Metastatic or relapsed Gastric cancer (adenocarcinoma) (module 4) * gBRCAm negative ovarian cancer (modules 6 and 7) * At least one measurable lesion that can be accurately assessed at baseline by computed tomography (CT) (or magnetic resonance imaging \[MRI\] suitable for assessment as per RECIST 1.1. The baseline scan must be obtained within 28 days prior to the first dose of olaparib. * Male or female patients, age ≥18 years (≥19 years for South Korea) * Eastern Cooperative Oncology Group (ECOG) performance status 0-1 * Life expectancy ≥12 weeks * Adequate organ and marrow function * Ability to swallow oral medications (capsules and tablets) without chewing, breaking, crushing, opening or otherwise altering the product formulation. Patients should not have gastrointestinal illnesses that would preclude the absorption of olaparib, which is an oral agent. For the gastric cancer cohort, patients with a full or partial gastrectomy will be permitted. * Ability of patient to understand and the willingness to sign a written informed consent document prior to any protocol related procedures, including screening evaluations. * Female patients must either: * Be of non-reproductive potential OR * Have a negative serum pregnancy test within 28 days of study treatment and confirmed prior to treatment on Day 1, and agree to use contraception if they or their partner are of reproductive potential

Exclusion criteria

* Prior chemotherapy or other systemic anticancer therapy within 4 weeks prior to start of olaparib treatment, 6 weeks for nitrosoureas or mitomycin. Exceptions include: Anti-hormonal treatment for ER positive or PR positive breast cancer is allowed until 7 days prior to treatment with olaparib, exposure to an investigational agent within 30 days or 5 half-lives (whichever is the longer) prior to start of olaparib treatment is not allowed, prior receipt of biologics targeting T cell co-regulatory proteins and/or immune checkpoints is not allowed. Examples include MEDI4736 or other PD1 or PD-L1 or PD-L2 inhibitors or anti-CTLA4 therapy, previous treatment with a PARP inhibitor, is not allowed. * Radiation therapy within 4 weeks prior to start of olaparib treatment (includes radiation targeting bone metastases) or radionuclide treatment within 6 weeks of treatment start. * Current dependency on total parenteral nutrition or IV fluid hydration. * Concomitant use of known strong cytochrome P450 (CYP) 3A (CYP3A) inhibitors or moderate CYP3A inhibitors. Concomitant use of known strong or moderate CYP3A inducers. * Concomitant therapy with any other anticancer therapy or chronic use of systemic corticosteroids. * Previous allogenic bone marrow transplant or double umbilical cord blood transplantation * Whole blood transfusions in the last 120 days * Patients with symptomatic or uncontrolled brain metastases. * Patients being considered at poor medical risk due to a serious, uncontrolled medical disorder or non-malignant systemic disease. * Any psychiatric disorder that prohibits obtaining informed consent * Major surgery or significant traumatic injury within 2 weeks of run-in * Immunocompromised patients * QTc prolongation \>470 msec or other significant ECG abnormality noted within 14 days of treatment * Pregnant and breastfeeding women are excluded. * Involvement in the planning and/or conduct of the study (applies to both AstraZeneca staff and/or staff at the study site) * Previous enrolment in the present study * Participation in a clinical study within 28 days or 5 half-lives of the drug, whichever is longer.

Design outcomes

Primary

MeasureTime frameDescription
Initial Stage Cohorts: Disease Control Rate (DCR) at Week 12RECIST performed at baseline, at 4 weeks after first dose of olaparib monotherapy and every 8 weeks +/-7 days thereafter. Assessed until DCO 14 Jun 2019.The DCR at 12 weeks was defined as the percentage of participants who had complete response (CR) + partial response (PR) + stable disease (SD) at 12 weeks. Participants demonstrated SD for a minimum interval of 11 weeks (minus 1 week to allow for an early assessment within the assessment window, i.e. 77 days) following the start of treatment. The DCR was determined using Investigator assessments according to Response Evaluation Criteria in Solid Tumors version 1.1 (RECIST v1.1).
Second Stage Cohort: Objective Response Rate (ORR)RECIST performed at baseline, and every 8 weeks +/-7 days thereafter. Assessed until 17 Sep 2021.The ORR (based on RECIST 1.1 as assessed by the Investigator) was defined as the percentage of participants with at least 1 visit response of CR or PR prior to PD or last evaluable assessment in the absence of progression. The 95% confidence interval (CI) were calculated using Exact Clopper-Pearson confidence limits for the binomial proportion.
Second Stage Cohorts: DCR at Week 24RECIST performed at baseline, and every 8 weeks +/-7 days thereafter. Assessed until 17 Sep 2021.The DCR at 24 weeks was defined as the percentage of participants who had CR + PR + SD at 24 weeks. Participants demonstrated SD for a minimum interval of 23 weeks (minus 1 week to allow for an early assessment within the assessment window, i.e. 161 days) following the start of treatment. The DCR was determined using Investigator assessments according to RECIST v1.1.

Secondary

MeasureTime frameDescription
Second Stage Expansion Cohort: DCR at Week 24RECIST performed at baseline, and every 8 weeks +/-7 days thereafter. Assessed until 17 Sep 2021.The DCR at 24 weeks was defined as the percentage of participants who had CR + PR + SD at 24 weeks. Participants demonstrated SD for a minimum interval of 23 weeks (minus 1 week to allow for an early assessment within the assessment window, i.e. 161 days) following the start of treatment. The DCR was determined using Investigator assessments according to RECIST v1.1.
Initial Stage Cohorts: DCR at Week 28RECIST performed at baseline, at 4 weeks after first dose of olaparib monotherapy and every 8 weeks +/-7 days thereafter. Assessed until DCO 14 Jun 2019.The DCR at 28 weeks was defined as the percentage of participants who had CR + PR + SD at 28 weeks. Participants demonstrated SD for a minimum interval of 27 weeks (minus 1 week to allow for an early assessment within the assessment window, i.e. 189 days) following the start of treatment. The DCR was determined using Investigator assessments according to RECIST v1.1.
Second Stage Cohorts: DCR at Week 56RECIST performed at baseline, and every 8 weeks +/-7 days thereafter. Assessed until 17 Sep 2021.The DCR at 56 weeks was defined as the percentage of participants who had CR + PR + SD at 56 weeks. Participants demonstrated SD for a minimum interval of 55 weeks (minus 1 week to allow for an early assessment within the assessment window, i.e. 385 days) following the start of treatment. The DCR was determined using Investigator assessments according to RECIST v1.1.
Initial and Second Stage Cohorts: ORRRECIST performed at baseline, at 4 weeks after first dose of olaparib monotherapy (for initial stage cohort only) and every 8 weeks +/-7 days thereafter. Assessed until DCO 14 Jun 2019 and 17 Sep 2021 for initial and second stage cohorts, respectivelyThe ORR (based on RECIST 1.1 as assessed by the Investigator) was defined as the percentage of participants with at least 1 visit response of CR or PR prior to PD or last evaluable assessment in the absence of progression. The 95% CI were calculated using Exact Clopper-Pearson confidence limits for the binomial proportion.
Initial and Second Stage Cohorts: Duration of Response (DoR)RECIST performed at baseline, at 4 weeks after first dose of olaparib monotherapy (for initial stage cohort only) and every 8 weeks +/-7 days thereafter. Assessed until DCO 14 Jun 2019 and 17 Sep 2021 for initial and second stage cohorts, respectivelyThe DoR (based on RECIST 1.1 as assessed by the Investigator) was defined as the time from the date of first documented response until date of documented progression or death in the absence of PD. The DoR was calculated using Kaplan-Meier technique.
Initial and Second Stage Cohorts: Progression-Free Survival (PFS)RECIST performed at baseline, at 4 weeks after first dose of olaparib monotherapy (for initial stage cohort only) and every 8 weeks +/-7 days thereafter. Assessed until DCO 14 Jun 2019 and 17 Sep 2021 for initial and second stage cohorts, respectivelyThe PFS (based on RECIST 1.1 as assessed by the Investigator) was defined as the time from start of study treatment (Day 1; start of olaparib monotherapy for initial stage cohorts) until the date of objective PD or death (by any cause in the absence of disease progression) regardless of whether the patient withdraws from therapy or receives another anticancer therapy prior to disease progression. The PFS was calculated using Kaplan-Meier technique.
Initial Stage Cohorts: Percentage Change From Baseline in Target Tumor Size at Weeks 12 and 28Baseline (Day 1) and Weeks 12 and 28. Assessed until DCO 14 Jun 2019The percentage change in target tumor size at each timepoint (based on RECIST 1.1 target lesion measurements) was obtained for each participant taking the difference between the sum of the target lesions at each timepoint and the sum of the target lesions at baseline divided by the sum of the target lesions at baseline times 100. Baseline was defined as the last evaluable assessment prior to starting olaparib treatment.
Second Stage Cohorts: Percentage Change From Baseline in Target Tumor Size at Weeks 24 and 56Baseline (Day 1) and Weeks 24 and 56. Assessed until DCO 17 Sep 2021The percentage change in target tumor size at each timepoint (based on RECIST 1.1 target lesion measurements) was obtained for each participant taking the difference between the sum of the target lesions at each timepoint and the sum of the target lesions at baseline divided by the sum of the target lesions at baseline times 100. Baseline was defined as the last assessment prior to Cycle 1 Day 1.
Initial and Second Stage Cohorts: Best Percentage Change From Baseline in Target Tumor SizeFrom baseline (Day 1) until confirmed PD/death. Assessed until DCO 14 Jun 2019 and 17 Sep 2021 for initial and second stage cohorts, respectivelyThe best percentage change from baseline in target tumor size was based on RECIST 1.1 target lesion measurements taken at each RECIST 1.1 assessment. All measurements until PD or the last evaluable assessment in the absence of PD was included in the calculation. Baseline was defined as the last evaluable assessment prior to starting olaparib treatment for initial stage cohorts. Baseline was defined as the last assessment prior to Cycle 1 Day 1 for second stage cohorts.
Initial and Second Stage Cohorts: Time to Study Treatment Discontinuation or Death (TDT)From baseline (Day 1) until treatment discontinuation/death. Assessed until DCO 14 Jun 2019 and 17 Sep 2021 for initial and second stage cohorts, respectivelyThe TDT was defined as the time from start of study treatment (Day 1; start of olaparib monotherapy for initial stage cohorts) to the earlier of the date of study treatment discontinuation or death. The TDT was calculated using the Kaplan-Meier technique.
Initial and Second Stage Cohorts: OSFrom baseline (Day 1) until death from any cause. Assessed until DCO 14 Jun 2019 for initial stage cohorts except for ovarian cancer cohort and DCO 17 Sep 2021 for initial stage ovarian cancer cohort and second stage cohortsThe OS was defined as the time from the start of study treatment (Day 1; start of olaparib monotherapy for initial stage cohorts) until death due to any cause. The OS was calculated using the Kaplan-Meier technique.
Initial and Second Stage Cohorts: Serum Concentrations of MEDI4736Pre-dose and within 10 minutes of end of infusion on Days 1, 85 and 113; Pre-dose on Days 29, 57 and 169; and 90 days post last dose of MEDI4736. Assessed until DCO 14 Jun 2019 and 17 Sep 2021 for initial and second stage cohorts, respectivelyBlood samples were collected to determine the serum concentration of MEDI4736.
Initial and Second Stage Cohorts: Serum Concentrations of OlaparibPre-dose and 0.5-1 hour postdose on Days 1 and 22 of monotherapy; Pre-dose and 0.5-1, 1-3, 3-6 and 6-12 hours postdose on Day 15 of combination therapy. Assessed until DCO 14 Jun 2019 and 17 Sep 2021 for initial and second stage cohorts, respectivelyBlood samples were collected to determine the serum concentration of olaparib.
Second Stage Cohort: Serum Concentrations of BevacizumabPre-dose and within 10 minutes of end of infusion on Days 1 and 85; Pre-dose on Days 29 and 169; and 90 days post last dose of bevacizumab. Assessed until DCO 17 Sep 2021Blood samples were collected to determine the serum concentration of bevacizumab.
Initial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736Pre-dose on Days 1, 15, 57, 85, 113 and 169; and 90 days post-last dose of MEDI4736. Assessed until DCO 14 Jun 2019 and 17 Sep 2021 for initial and second stage cohorts, respectivelyBlood samples were measured for the presence of ADAs and ADA-neutralizing antibodies (nAb) for MEDI4736 using validated assays. ADA prevalence was defined as the percentage of participants with positive ADA result at any time, baseline or post-baseline. ADA incidence (treatment-emergent ADA) was defined as the sum of both treatment-induced (post-baseline ADA positive only) and treatment-boosted ADA. Treatment-boosted ADA was defined as baseline ADA titer that was boosted to 4-fold or higher following drug administration. Persistently positive was defined as positive at \>=2 post-baseline assessments (with \>=16 weeks between first and last positive) or positive at last post-baseline assessment. Transiently positive was defined as having at least 1 post-baseline ADA positive assessment and not fulfilling the conditions of persistently positive.

Countries

France, Israel, Netherlands, South Korea, Switzerland, United Kingdom, United States

Contacts

PRINCIPAL_INVESTIGATORSusan Domchek, MD

Abramson Cancer Center, University of Pennsylvania

Participant flow

Recruitment details

This Phase I/II open-label study was conducted in participants with advanced solid tumors at 43 centers in France, the United Kingdom, the Republic of Korea, the USA, the Netherlands, Israel, and Switzerland. Initial stage cohorts: Results are reported for analysis with assessment until data cut-off (DCO) of 14 Jun 2019 \[except for overall survival (OS) for ovarian cancer cohort (DCO: 17 Sep 2021)\]. Second stage cohorts: Results are reported for analysis with assessment until DCO of 17 Sep 2021.

Pre-assignment details

This study consists a screening period (28 days), run-in monotherapy treatment period (initial stage cohort only; 4 weeks) followed by combination therapy treatment period until progressive disease (PD). 148 participants entered initial stage cohorts and 114 participants entered second stage cohorts. Thus, 262 participants were enrolled in the study.

Participants by arm

ArmCount
Initial Stage: Small Cell Lung Cancer
Participants received monotherapy with olaparib 300 mg orally twice daily for 4 weeks. Participants then continued to receive combination therapy with olaparib and MEDI4736 1.5 g IV infusion every 4 weeks in 28-day cycle until PD or specific treatment discontinuation criteria were met.
38
Initial Stage: Breast Cancer
Participants received monotherapy with olaparib 300 mg orally twice daily for 4 weeks. Participants then continued to receive combination therapy with olaparib and MEDI4736 1.5 g IV infusion every 4 weeks in 28-day cycle until PD or specific treatment discontinuation criteria were met.
30
Initial Stage: Ovarian Cancer
Participants received monotherapy with olaparib 300 mg orally twice daily for 4 weeks. Participants then continued to receive combination therapy with olaparib and MEDI4736 1.5 g IV infusion every 4 weeks in 28-day cycle until PD or specific treatment discontinuation criteria were met.
32
Initial Stage: Gastric Cancer
Participants received monotherapy with olaparib 300 mg orally twice daily for 4 weeks. Participants then continued to receive combination therapy with olaparib and MEDI4736 1.5 g IV infusion every 4 weeks in 28-day cycle until PD or specific treatment discontinuation criteria were met.
39
Second Stage: Ovarian Cancer Expansion
Participants received combination therapy with olaparib 300 mg orally twice daily and MEDI4736 1.5 g IV infusion every 4 weeks in 28-day cycle until PD or specific treatment discontinuation criteria were met.
51
Second Stage: Ovarian Cancer Triplet
Participants received combination therapy with olaparib 300 mg orally twice daily plus MEDI4736 1.5 g IV infusion every 4 weeks plus bevacizumab 10 mg/kg IV infusion every 2 weeks in 28-day cycle until PD or specific treatment discontinuation criteria were met.
31
Second Stage: Ovarian Cancer Doublet
Participants received combination therapy with olaparib 300 mg orally twice daily and MEDI4736 1.5 g IV infusion every 4 weeks in 28-day cycle until PD or specific treatment discontinuation criteria were met.
32
Total253

Baseline characteristics

CharacteristicInitial Stage: Small Cell Lung CancerInitial Stage: Breast CancerInitial Stage: Ovarian CancerInitial Stage: Gastric CancerSecond Stage: Ovarian Cancer ExpansionSecond Stage: Ovarian Cancer TripletSecond Stage: Ovarian Cancer DoubletTotal
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
15 Participants1 Participants5 Participants10 Participants13 Participants14 Participants20 Participants78 Participants
Age, Categorical
Between 18 and 65 years
23 Participants29 Participants27 Participants29 Participants38 Participants17 Participants12 Participants175 Participants
Race/Ethnicity, Customized
Asian
6 Participants7 Participants6 Participants13 Participants12 Participants10 Participants3 Participants57 Participants
Race/Ethnicity, Customized
Black or African American
0 Participants0 Participants0 Participants0 Participants1 Participants0 Participants0 Participants1 Participants
Race/Ethnicity, Customized
Hispanic or Latino
0 Participants0 Participants0 Participants0 Participants0 Participants1 Participants0 Participants1 Participants
Race/Ethnicity, Customized
Missing
11 Participants6 Participants4 Participants2 Participants4 Participants0 Participants5 Participants32 Participants
Race/Ethnicity, Customized
Not Hispanic or Latino
27 Participants24 Participants28 Participants37 Participants47 Participants30 Participants27 Participants220 Participants
Race/Ethnicity, Customized
Other
0 Participants0 Participants0 Participants0 Participants0 Participants1 Participants0 Participants1 Participants
Race/Ethnicity, Customized
White
21 Participants17 Participants22 Participants24 Participants34 Participants20 Participants24 Participants162 Participants
Sex: Female, Male
Female
17 Participants29 Participants32 Participants13 Participants51 Participants31 Participants32 Participants205 Participants
Sex: Female, Male
Male
21 Participants1 Participants0 Participants26 Participants0 Participants0 Participants0 Participants48 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
EG004
affected / at risk
EG005
affected / at risk
EG006
affected / at risk
deaths
Total, all-cause mortality
36 / 4024 / 3426 / 3435 / 4013 / 5117 / 3120 / 32
other
Total, other adverse events
40 / 4034 / 3432 / 3440 / 4050 / 5131 / 3132 / 32
serious
Total, serious adverse events
23 / 404 / 3410 / 3410 / 4013 / 516 / 318 / 32

Outcome results

Primary

Initial Stage Cohorts: Disease Control Rate (DCR) at Week 12

The DCR at 12 weeks was defined as the percentage of participants who had complete response (CR) + partial response (PR) + stable disease (SD) at 12 weeks. Participants demonstrated SD for a minimum interval of 11 weeks (minus 1 week to allow for an early assessment within the assessment window, i.e. 77 days) following the start of treatment. The DCR was determined using Investigator assessments according to Response Evaluation Criteria in Solid Tumors version 1.1 (RECIST v1.1).

Time frame: RECIST performed at baseline, at 4 weeks after first dose of olaparib monotherapy and every 8 weeks +/-7 days thereafter. Assessed until DCO 14 Jun 2019.

Population: The full analysis set included all participants who received at least 1 dose of study treatment and had no important protocol deviation resulting in exclusion from the analysis set as defined in the Statistical Analysis Plan (i.e, not meeting key eligibility criteria).

ArmMeasureValue (NUMBER)
Initial Stage: Small Cell Lung CancerInitial Stage Cohorts: Disease Control Rate (DCR) at Week 1228.9 percentage of participants
Initial Stage: Breast CancerInitial Stage Cohorts: Disease Control Rate (DCR) at Week 1280.0 percentage of participants
Initial Stage: Ovarian CancerInitial Stage Cohorts: Disease Control Rate (DCR) at Week 1281.3 percentage of participants
Initial Stage: Gastric CancerInitial Stage Cohorts: Disease Control Rate (DCR) at Week 1225.6 percentage of participants
Primary

Second Stage Cohort: Objective Response Rate (ORR)

The ORR (based on RECIST 1.1 as assessed by the Investigator) was defined as the percentage of participants with at least 1 visit response of CR or PR prior to PD or last evaluable assessment in the absence of progression. The 95% confidence interval (CI) were calculated using Exact Clopper-Pearson confidence limits for the binomial proportion.

Time frame: RECIST performed at baseline, and every 8 weeks +/-7 days thereafter. Assessed until 17 Sep 2021.

Population: The full analysis set included all participants who received at least 1 dose of study treatment and had no important protocol deviation resulting in exclusion from the analysis set as defined in the Statistical Analysis Plan (i.e, not meeting key eligibility criteria).

ArmMeasureValue (NUMBER)
Initial Stage: Small Cell Lung CancerSecond Stage Cohort: Objective Response Rate (ORR)92.2 percentage of participants
Primary

Second Stage Cohorts: DCR at Week 24

The DCR at 24 weeks was defined as the percentage of participants who had CR + PR + SD at 24 weeks. Participants demonstrated SD for a minimum interval of 23 weeks (minus 1 week to allow for an early assessment within the assessment window, i.e. 161 days) following the start of treatment. The DCR was determined using Investigator assessments according to RECIST v1.1.

Time frame: RECIST performed at baseline, and every 8 weeks +/-7 days thereafter. Assessed until 17 Sep 2021.

Population: The full analysis set included all participants who received at least 1 dose of study treatment and had no important protocol deviation resulting in exclusion from the analysis set as defined in the Statistical Analysis Plan (i.e, not meeting key eligibility criteria).

ArmMeasureValue (NUMBER)
Initial Stage: Small Cell Lung CancerSecond Stage Cohorts: DCR at Week 2474.2 percentage of participants
Initial Stage: Breast CancerSecond Stage Cohorts: DCR at Week 2428.1 percentage of participants
Secondary

Initial and Second Stage Cohorts: Best Percentage Change From Baseline in Target Tumor Size

The best percentage change from baseline in target tumor size was based on RECIST 1.1 target lesion measurements taken at each RECIST 1.1 assessment. All measurements until PD or the last evaluable assessment in the absence of PD was included in the calculation. Baseline was defined as the last evaluable assessment prior to starting olaparib treatment for initial stage cohorts. Baseline was defined as the last assessment prior to Cycle 1 Day 1 for second stage cohorts.

Time frame: From baseline (Day 1) until confirmed PD/death. Assessed until DCO 14 Jun 2019 and 17 Sep 2021 for initial and second stage cohorts, respectively

Population: The full analysis set included all participants who received at least 1 dose of study treatment and had no important protocol deviation resulting in exclusion from the analysis set as defined in the Statistical Analysis Plan (i.e, not meeting key eligibility criteria). Only participants with at least 1 post baseline RECIST target lesion assessment scan were analyzed.

ArmMeasureValue (MEAN)Dispersion
Initial Stage: Small Cell Lung CancerInitial and Second Stage Cohorts: Best Percentage Change From Baseline in Target Tumor Size6.27 percentage change in tumor sizeStandard Deviation 32.398
Initial Stage: Breast CancerInitial and Second Stage Cohorts: Best Percentage Change From Baseline in Target Tumor Size-47.60 percentage change in tumor sizeStandard Deviation 36.823
Initial Stage: Ovarian CancerInitial and Second Stage Cohorts: Best Percentage Change From Baseline in Target Tumor Size-55.55 percentage change in tumor sizeStandard Deviation 35.789
Initial Stage: Gastric CancerInitial and Second Stage Cohorts: Best Percentage Change From Baseline in Target Tumor Size1.64 percentage change in tumor sizeStandard Deviation 42.338
Second Stage: Ovarian Cancer TripletInitial and Second Stage Cohorts: Best Percentage Change From Baseline in Target Tumor Size-72.78 percentage change in tumor sizeStandard Deviation 31.497
Second Stage: Ovarian Cancer DoubletInitial and Second Stage Cohorts: Best Percentage Change From Baseline in Target Tumor Size-53.30 percentage change in tumor sizeStandard Deviation 33.317
Second Stage: Ovarian Cancer DoubletInitial and Second Stage Cohorts: Best Percentage Change From Baseline in Target Tumor Size-20.42 percentage change in tumor sizeStandard Deviation 41.16
Secondary

Initial and Second Stage Cohorts: Duration of Response (DoR)

The DoR (based on RECIST 1.1 as assessed by the Investigator) was defined as the time from the date of first documented response until date of documented progression or death in the absence of PD. The DoR was calculated using Kaplan-Meier technique.

Time frame: RECIST performed at baseline, at 4 weeks after first dose of olaparib monotherapy (for initial stage cohort only) and every 8 weeks +/-7 days thereafter. Assessed until DCO 14 Jun 2019 and 17 Sep 2021 for initial and second stage cohorts, respectively

Population: The full analysis set included all participants who received at least 1 dose of study treatment and had no important protocol deviation resulting in exclusion from the analysis set as defined in the Statistical Analysis Plan (i.e, not meeting key eligibility criteria). Only participants with objective response were analyzed.

ArmMeasureValue (MEDIAN)
Initial Stage: Small Cell Lung CancerInitial and Second Stage Cohorts: Duration of Response (DoR)3.6 months
Initial Stage: Breast CancerInitial and Second Stage Cohorts: Duration of Response (DoR)9.2 months
Initial Stage: Ovarian CancerInitial and Second Stage Cohorts: Duration of Response (DoR)10.2 months
Initial Stage: Gastric CancerInitial and Second Stage Cohorts: Duration of Response (DoR)14.8 months
Second Stage: Ovarian Cancer TripletInitial and Second Stage Cohorts: Duration of Response (DoR)14.8 months
Second Stage: Ovarian Cancer DoubletInitial and Second Stage Cohorts: Duration of Response (DoR)11.1 months
Second Stage: Ovarian Cancer DoubletInitial and Second Stage Cohorts: Duration of Response (DoR)6.9 months
Secondary

Initial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736

Blood samples were measured for the presence of ADAs and ADA-neutralizing antibodies (nAb) for MEDI4736 using validated assays. ADA prevalence was defined as the percentage of participants with positive ADA result at any time, baseline or post-baseline. ADA incidence (treatment-emergent ADA) was defined as the sum of both treatment-induced (post-baseline ADA positive only) and treatment-boosted ADA. Treatment-boosted ADA was defined as baseline ADA titer that was boosted to 4-fold or higher following drug administration. Persistently positive was defined as positive at \>=2 post-baseline assessments (with \>=16 weeks between first and last positive) or positive at last post-baseline assessment. Transiently positive was defined as having at least 1 post-baseline ADA positive assessment and not fulfilling the conditions of persistently positive.

Time frame: Pre-dose on Days 1, 15, 57, 85, 113 and 169; and 90 days post-last dose of MEDI4736. Assessed until DCO 14 Jun 2019 and 17 Sep 2021 for initial and second stage cohorts, respectively

Population: The ADA analysis set included all participants in the safety analysis set who have non-missing baseline ADA and at least 1 non-missing post-baseline ADA result for MEDI4736.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Initial Stage: Small Cell Lung CancerInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736Any nAb positive among any ADA positive0 Participants
Initial Stage: Small Cell Lung CancerInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736Persistent positive0 Participants
Initial Stage: Small Cell Lung CancerInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736ADA positive post-baseline and positive at baseline0 Participants
Initial Stage: Small Cell Lung CancerInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736Transient positive0 Participants
Initial Stage: Small Cell Lung CancerInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736ADA incidence0 Participants
Initial Stage: Small Cell Lung CancerInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736ADA not detected post-baseline and positive at baseline0 Participants
Initial Stage: Small Cell Lung CancerInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736ADA positive post-baseline and not detected at baseline0 Participants
Initial Stage: Small Cell Lung CancerInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736ADA prevalence0 Participants
Initial Stage: Small Cell Lung CancerInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736Treatment-boosted ADA0 Participants
Initial Stage: Breast CancerInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736Any nAb positive among any ADA positive0 Participants
Initial Stage: Breast CancerInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736ADA positive post-baseline and positive at baseline0 Participants
Initial Stage: Breast CancerInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736Transient positive0 Participants
Initial Stage: Breast CancerInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736Treatment-boosted ADA0 Participants
Initial Stage: Breast CancerInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736ADA positive post-baseline and not detected at baseline0 Participants
Initial Stage: Breast CancerInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736Persistent positive0 Participants
Initial Stage: Breast CancerInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736ADA incidence0 Participants
Initial Stage: Breast CancerInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736ADA prevalence1 Participants
Initial Stage: Breast CancerInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736ADA not detected post-baseline and positive at baseline0 Participants
Initial Stage: Ovarian CancerInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736ADA not detected post-baseline and positive at baseline0 Participants
Initial Stage: Ovarian CancerInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736ADA positive post-baseline and positive at baseline0 Participants
Initial Stage: Ovarian CancerInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736ADA positive post-baseline and not detected at baseline0 Participants
Initial Stage: Ovarian CancerInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736Treatment-boosted ADA0 Participants
Initial Stage: Ovarian CancerInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736Transient positive0 Participants
Initial Stage: Ovarian CancerInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736Any nAb positive among any ADA positive0 Participants
Initial Stage: Ovarian CancerInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736ADA prevalence0 Participants
Initial Stage: Ovarian CancerInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736ADA incidence0 Participants
Initial Stage: Ovarian CancerInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736Persistent positive0 Participants
Initial Stage: Gastric CancerInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736Treatment-boosted ADA0 Participants
Initial Stage: Gastric CancerInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736Transient positive0 Participants
Initial Stage: Gastric CancerInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736ADA positive post-baseline and positive at baseline0 Participants
Initial Stage: Gastric CancerInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736Any nAb positive among any ADA positive0 Participants
Initial Stage: Gastric CancerInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736ADA not detected post-baseline and positive at baseline0 Participants
Initial Stage: Gastric CancerInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736ADA prevalence0 Participants
Initial Stage: Gastric CancerInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736ADA incidence0 Participants
Initial Stage: Gastric CancerInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736ADA positive post-baseline and not detected at baseline0 Participants
Initial Stage: Gastric CancerInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736Persistent positive0 Participants
Second Stage: Ovarian Cancer DoubletInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736Any nAb positive among any ADA positive0 Participants
Second Stage: Ovarian Cancer DoubletInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736Treatment-boosted ADA0 Participants
Second Stage: Ovarian Cancer DoubletInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736ADA prevalence0 Participants
Second Stage: Ovarian Cancer DoubletInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736ADA positive post-baseline and not detected at baseline0 Participants
Second Stage: Ovarian Cancer DoubletInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736ADA incidence0 Participants
Second Stage: Ovarian Cancer DoubletInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736Persistent positive0 Participants
Second Stage: Ovarian Cancer DoubletInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736ADA positive post-baseline and positive at baseline0 Participants
Second Stage: Ovarian Cancer DoubletInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736Transient positive0 Participants
Second Stage: Ovarian Cancer DoubletInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736ADA not detected post-baseline and positive at baseline0 Participants
Second Stage: Ovarian Cancer DoubletInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736Any nAb positive among any ADA positive0 Participants
Second Stage: Ovarian Cancer DoubletInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736Treatment-boosted ADA0 Participants
Second Stage: Ovarian Cancer DoubletInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736ADA positive post-baseline and not detected at baseline0 Participants
Second Stage: Ovarian Cancer DoubletInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736ADA incidence0 Participants
Second Stage: Ovarian Cancer DoubletInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736ADA positive post-baseline and positive at baseline0 Participants
Second Stage: Ovarian Cancer DoubletInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736Persistent positive0 Participants
Second Stage: Ovarian Cancer DoubletInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736ADA prevalence0 Participants
Second Stage: Ovarian Cancer DoubletInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736ADA not detected post-baseline and positive at baseline0 Participants
Second Stage: Ovarian Cancer DoubletInitial and Second Stage Cohorts: Number of Participants With Anti-Drug Antibody (ADA) Response to MEDI4736Transient positive0 Participants
Secondary

Initial and Second Stage Cohorts: ORR

The ORR (based on RECIST 1.1 as assessed by the Investigator) was defined as the percentage of participants with at least 1 visit response of CR or PR prior to PD or last evaluable assessment in the absence of progression. The 95% CI were calculated using Exact Clopper-Pearson confidence limits for the binomial proportion.

Time frame: RECIST performed at baseline, at 4 weeks after first dose of olaparib monotherapy (for initial stage cohort only) and every 8 weeks +/-7 days thereafter. Assessed until DCO 14 Jun 2019 and 17 Sep 2021 for initial and second stage cohorts, respectively

Population: The full analysis set included all participants who received at least 1 dose of study treatment and had no important protocol deviation resulting in exclusion from the analysis set as defined in the Statistical Analysis Plan (i.e, not meeting key eligibility criteria).

ArmMeasureValue (NUMBER)
Initial Stage: Small Cell Lung CancerInitial and Second Stage Cohorts: ORR10.5 percentage of participants
Initial Stage: Breast CancerInitial and Second Stage Cohorts: ORR63.3 percentage of participants
Initial Stage: Ovarian CancerInitial and Second Stage Cohorts: ORR71.9 percentage of participants
Initial Stage: Gastric CancerInitial and Second Stage Cohorts: ORR10.3 percentage of participants
Second Stage: Ovarian Cancer TripletInitial and Second Stage Cohorts: ORR87.1 percentage of participants
Second Stage: Ovarian Cancer DoubletInitial and Second Stage Cohorts: ORR34.4 percentage of participants
Secondary

Initial and Second Stage Cohorts: OS

The OS was defined as the time from the start of study treatment (Day 1; start of olaparib monotherapy for initial stage cohorts) until death due to any cause. The OS was calculated using the Kaplan-Meier technique.

Time frame: From baseline (Day 1) until death from any cause. Assessed until DCO 14 Jun 2019 for initial stage cohorts except for ovarian cancer cohort and DCO 17 Sep 2021 for initial stage ovarian cancer cohort and second stage cohorts

Population: The full analysis set included all participants who received at least 1 dose of study treatment and had no important protocol deviation resulting in exclusion from the analysis set as defined in the Statistical Analysis Plan (i.e, not meeting key eligibility criteria).

ArmMeasureValue (MEDIAN)
Initial Stage: Small Cell Lung CancerInitial and Second Stage Cohorts: OS7.6 months
Initial Stage: Breast CancerInitial and Second Stage Cohorts: OS20.5 months
Initial Stage: Ovarian CancerInitial and Second Stage Cohorts: OS35.5 months
Initial Stage: Gastric CancerInitial and Second Stage Cohorts: OS6.4 months
Second Stage: Ovarian Cancer TripletInitial and Second Stage Cohorts: OSNA months
Second Stage: Ovarian Cancer DoubletInitial and Second Stage Cohorts: OS31.9 months
Second Stage: Ovarian Cancer DoubletInitial and Second Stage Cohorts: OS26.1 months
Secondary

Initial and Second Stage Cohorts: Progression-Free Survival (PFS)

The PFS (based on RECIST 1.1 as assessed by the Investigator) was defined as the time from start of study treatment (Day 1; start of olaparib monotherapy for initial stage cohorts) until the date of objective PD or death (by any cause in the absence of disease progression) regardless of whether the patient withdraws from therapy or receives another anticancer therapy prior to disease progression. The PFS was calculated using Kaplan-Meier technique.

Time frame: RECIST performed at baseline, at 4 weeks after first dose of olaparib monotherapy (for initial stage cohort only) and every 8 weeks +/-7 days thereafter. Assessed until DCO 14 Jun 2019 and 17 Sep 2021 for initial and second stage cohorts, respectively

Population: The full analysis set included all participants who received at least 1 dose of study treatment and had no important protocol deviation resulting in exclusion from the analysis set as defined in the Statistical Analysis Plan (i.e, not meeting key eligibility criteria).

ArmMeasureValue (MEDIAN)
Initial Stage: Small Cell Lung CancerInitial and Second Stage Cohorts: Progression-Free Survival (PFS)2.4 months
Initial Stage: Breast CancerInitial and Second Stage Cohorts: Progression-Free Survival (PFS)8.2 months
Initial Stage: Ovarian CancerInitial and Second Stage Cohorts: Progression-Free Survival (PFS)12.0 months
Initial Stage: Gastric CancerInitial and Second Stage Cohorts: Progression-Free Survival (PFS)2.6 months
Second Stage: Ovarian Cancer TripletInitial and Second Stage Cohorts: Progression-Free Survival (PFS)15.0 months
Second Stage: Ovarian Cancer DoubletInitial and Second Stage Cohorts: Progression-Free Survival (PFS)14.7 months
Second Stage: Ovarian Cancer DoubletInitial and Second Stage Cohorts: Progression-Free Survival (PFS)5.5 months
Secondary

Initial and Second Stage Cohorts: Serum Concentrations of MEDI4736

Blood samples were collected to determine the serum concentration of MEDI4736.

Time frame: Pre-dose and within 10 minutes of end of infusion on Days 1, 85 and 113; Pre-dose on Days 29, 57 and 169; and 90 days post last dose of MEDI4736. Assessed until DCO 14 Jun 2019 and 17 Sep 2021 for initial and second stage cohorts, respectively

Population: The MEDI4736 pharmacokinetic (PK) analysis set included all participants who received at least 1 dose of MEDI4736 and provided evaluable MEDI4736 PK profile for at least 1 treatment period.

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
Initial Stage: Small Cell Lung CancerInitial and Second Stage Cohorts: Serum Concentrations of MEDI4736Day 1: Pre-doseNA microgram per milliliter (mcg/mL)
Initial Stage: Small Cell Lung CancerInitial and Second Stage Cohorts: Serum Concentrations of MEDI4736Day 113: End of infusion504.8 microgram per milliliter (mcg/mL)Geometric Coefficient of Variation 25.24
Initial Stage: Small Cell Lung CancerInitial and Second Stage Cohorts: Serum Concentrations of MEDI473690 days post last dose6.907 microgram per milliliter (mcg/mL)Geometric Coefficient of Variation 297.9
Initial Stage: Small Cell Lung CancerInitial and Second Stage Cohorts: Serum Concentrations of MEDI4736Day 169: Pre-dose133.1 microgram per milliliter (mcg/mL)Geometric Coefficient of Variation 30.74
Initial Stage: Small Cell Lung CancerInitial and Second Stage Cohorts: Serum Concentrations of MEDI4736Day 57: Pre-dose144.7 microgram per milliliter (mcg/mL)Geometric Coefficient of Variation 38.96
Initial Stage: Small Cell Lung CancerInitial and Second Stage Cohorts: Serum Concentrations of MEDI4736Day 1: End of infusion483.5 microgram per milliliter (mcg/mL)Geometric Coefficient of Variation 35.09
Initial Stage: Small Cell Lung CancerInitial and Second Stage Cohorts: Serum Concentrations of MEDI4736Day 113: Pre-dose119.5 microgram per milliliter (mcg/mL)Geometric Coefficient of Variation 44.27
Initial Stage: Breast CancerInitial and Second Stage Cohorts: Serum Concentrations of MEDI473690 days post last dose12.24 microgram per milliliter (mcg/mL)Geometric Coefficient of Variation 4720
Initial Stage: Breast CancerInitial and Second Stage Cohorts: Serum Concentrations of MEDI4736Day 1: Pre-doseNA microgram per milliliter (mcg/mL)
Initial Stage: Breast CancerInitial and Second Stage Cohorts: Serum Concentrations of MEDI4736Day 169: Pre-dose231.5 microgram per milliliter (mcg/mL)Geometric Coefficient of Variation 41.14
Initial Stage: Breast CancerInitial and Second Stage Cohorts: Serum Concentrations of MEDI4736Day 113: End of infusion671.5 microgram per milliliter (mcg/mL)Geometric Coefficient of Variation 31.79
Initial Stage: Breast CancerInitial and Second Stage Cohorts: Serum Concentrations of MEDI4736Day 1: End of infusion542.5 microgram per milliliter (mcg/mL)Geometric Coefficient of Variation 36.04
Initial Stage: Breast CancerInitial and Second Stage Cohorts: Serum Concentrations of MEDI4736Day 113: Pre-dose220.7 microgram per milliliter (mcg/mL)Geometric Coefficient of Variation 35.97
Initial Stage: Breast CancerInitial and Second Stage Cohorts: Serum Concentrations of MEDI4736Day 57: Pre-dose165.2 microgram per milliliter (mcg/mL)Geometric Coefficient of Variation 40.31
Initial Stage: Ovarian CancerInitial and Second Stage Cohorts: Serum Concentrations of MEDI4736Day 1: Pre-doseNA microgram per milliliter (mcg/mL)
Initial Stage: Ovarian CancerInitial and Second Stage Cohorts: Serum Concentrations of MEDI473690 days post last dose22.35 microgram per milliliter (mcg/mL)Geometric Coefficient of Variation 120.9
Initial Stage: Ovarian CancerInitial and Second Stage Cohorts: Serum Concentrations of MEDI4736Day 57: Pre-dose171.3 microgram per milliliter (mcg/mL)Geometric Coefficient of Variation 31.73
Initial Stage: Ovarian CancerInitial and Second Stage Cohorts: Serum Concentrations of MEDI4736Day 1: End of infusion417.9 microgram per milliliter (mcg/mL)Geometric Coefficient of Variation 33.48
Initial Stage: Ovarian CancerInitial and Second Stage Cohorts: Serum Concentrations of MEDI4736Day 113: Pre-dose231.3 microgram per milliliter (mcg/mL)Geometric Coefficient of Variation 33.45
Initial Stage: Ovarian CancerInitial and Second Stage Cohorts: Serum Concentrations of MEDI4736Day 113: End of infusion585.5 microgram per milliliter (mcg/mL)Geometric Coefficient of Variation 52.67
Initial Stage: Ovarian CancerInitial and Second Stage Cohorts: Serum Concentrations of MEDI4736Day 169: Pre-dose261.6 microgram per milliliter (mcg/mL)Geometric Coefficient of Variation 45.92
Initial Stage: Gastric CancerInitial and Second Stage Cohorts: Serum Concentrations of MEDI4736Day 57: Pre-dose114.7 microgram per milliliter (mcg/mL)Geometric Coefficient of Variation 44.78
Initial Stage: Gastric CancerInitial and Second Stage Cohorts: Serum Concentrations of MEDI4736Day 1: Pre-doseNA microgram per milliliter (mcg/mL)
Initial Stage: Gastric CancerInitial and Second Stage Cohorts: Serum Concentrations of MEDI4736Day 169: Pre-dose230.7 microgram per milliliter (mcg/mL)Geometric Coefficient of Variation 35.81
Initial Stage: Gastric CancerInitial and Second Stage Cohorts: Serum Concentrations of MEDI4736Day 113: Pre-dose196.9 microgram per milliliter (mcg/mL)Geometric Coefficient of Variation 74.6
Initial Stage: Gastric CancerInitial and Second Stage Cohorts: Serum Concentrations of MEDI4736Day 113: End of infusion679.1 microgram per milliliter (mcg/mL)Geometric Coefficient of Variation 34.8
Initial Stage: Gastric CancerInitial and Second Stage Cohorts: Serum Concentrations of MEDI473690 days post last dose17.23 microgram per milliliter (mcg/mL)Geometric Coefficient of Variation 155.2
Initial Stage: Gastric CancerInitial and Second Stage Cohorts: Serum Concentrations of MEDI4736Day 1: End of infusion391.8 microgram per milliliter (mcg/mL)Geometric Coefficient of Variation 25.09
Second Stage: Ovarian Cancer TripletInitial and Second Stage Cohorts: Serum Concentrations of MEDI4736Day 85: End of infusion610.6 microgram per milliliter (mcg/mL)Geometric Coefficient of Variation 39.64
Second Stage: Ovarian Cancer TripletInitial and Second Stage Cohorts: Serum Concentrations of MEDI473690 days post last dose17.94 microgram per milliliter (mcg/mL)Geometric Coefficient of Variation 331.8
Second Stage: Ovarian Cancer TripletInitial and Second Stage Cohorts: Serum Concentrations of MEDI4736Day 85: Pre-dose152.8 microgram per milliliter (mcg/mL)Geometric Coefficient of Variation 50.14
Second Stage: Ovarian Cancer TripletInitial and Second Stage Cohorts: Serum Concentrations of MEDI4736Day 1: End of infusion409.3 microgram per milliliter (mcg/mL)Geometric Coefficient of Variation 33.27
Second Stage: Ovarian Cancer TripletInitial and Second Stage Cohorts: Serum Concentrations of MEDI4736Day 29: Pre-dose93.56 microgram per milliliter (mcg/mL)Geometric Coefficient of Variation 54.83
Second Stage: Ovarian Cancer TripletInitial and Second Stage Cohorts: Serum Concentrations of MEDI4736Day 1: Pre-doseNA microgram per milliliter (mcg/mL)
Second Stage: Ovarian Cancer TripletInitial and Second Stage Cohorts: Serum Concentrations of MEDI4736Day 169: Pre-dose206.3 microgram per milliliter (mcg/mL)Geometric Coefficient of Variation 61.24
Second Stage: Ovarian Cancer DoubletInitial and Second Stage Cohorts: Serum Concentrations of MEDI4736Day 1: Pre-doseNA microgram per milliliter (mcg/mL)
Second Stage: Ovarian Cancer DoubletInitial and Second Stage Cohorts: Serum Concentrations of MEDI4736Day 1: End of infusion498.8 microgram per milliliter (mcg/mL)Geometric Coefficient of Variation 30.27
Second Stage: Ovarian Cancer DoubletInitial and Second Stage Cohorts: Serum Concentrations of MEDI4736Day 29: Pre-dose96.50 microgram per milliliter (mcg/mL)Geometric Coefficient of Variation 34.67
Second Stage: Ovarian Cancer DoubletInitial and Second Stage Cohorts: Serum Concentrations of MEDI4736Day 85: Pre-dose145.2 microgram per milliliter (mcg/mL)Geometric Coefficient of Variation 55.71
Second Stage: Ovarian Cancer DoubletInitial and Second Stage Cohorts: Serum Concentrations of MEDI4736Day 85: End of infusion589.3 microgram per milliliter (mcg/mL)Geometric Coefficient of Variation 35.48
Second Stage: Ovarian Cancer DoubletInitial and Second Stage Cohorts: Serum Concentrations of MEDI4736Day 169: Pre-dose162.6 microgram per milliliter (mcg/mL)Geometric Coefficient of Variation 95.86
Second Stage: Ovarian Cancer DoubletInitial and Second Stage Cohorts: Serum Concentrations of MEDI473690 days post last dose17.47 microgram per milliliter (mcg/mL)Geometric Coefficient of Variation 78.93
Second Stage: Ovarian Cancer DoubletInitial and Second Stage Cohorts: Serum Concentrations of MEDI473690 days post last dose20.50 microgram per milliliter (mcg/mL)Geometric Coefficient of Variation 340
Second Stage: Ovarian Cancer DoubletInitial and Second Stage Cohorts: Serum Concentrations of MEDI4736Day 169: Pre-dose186.6 microgram per milliliter (mcg/mL)Geometric Coefficient of Variation 65.36
Second Stage: Ovarian Cancer DoubletInitial and Second Stage Cohorts: Serum Concentrations of MEDI4736Day 85: End of infusion482.9 microgram per milliliter (mcg/mL)Geometric Coefficient of Variation 44.01
Second Stage: Ovarian Cancer DoubletInitial and Second Stage Cohorts: Serum Concentrations of MEDI4736Day 85: Pre-dose142.8 microgram per milliliter (mcg/mL)Geometric Coefficient of Variation 63.07
Second Stage: Ovarian Cancer DoubletInitial and Second Stage Cohorts: Serum Concentrations of MEDI4736Day 29: Pre-dose78.23 microgram per milliliter (mcg/mL)Geometric Coefficient of Variation 56.6
Second Stage: Ovarian Cancer DoubletInitial and Second Stage Cohorts: Serum Concentrations of MEDI4736Day 1: End of infusion397.1 microgram per milliliter (mcg/mL)Geometric Coefficient of Variation 18.53
Second Stage: Ovarian Cancer DoubletInitial and Second Stage Cohorts: Serum Concentrations of MEDI4736Day 1: Pre-doseNA microgram per milliliter (mcg/mL)
Secondary

Initial and Second Stage Cohorts: Serum Concentrations of Olaparib

Blood samples were collected to determine the serum concentration of olaparib.

Time frame: Pre-dose and 0.5-1 hour postdose on Days 1 and 22 of monotherapy; Pre-dose and 0.5-1, 1-3, 3-6 and 6-12 hours postdose on Day 15 of combination therapy. Assessed until DCO 14 Jun 2019 and 17 Sep 2021 for initial and second stage cohorts, respectively

Population: The olaparib PK analysis set included all participants who received at least 1 dose of olaparib and provided evaluable olaparib PK profile for at least 1 treatment period.

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
Initial Stage: Small Cell Lung CancerInitial and Second Stage Cohorts: Serum Concentrations of OlaparibMonotherapy - Day 22: Pre-dose1.374 mcg/mLGeometric Coefficient of Variation 814.4
Initial Stage: Small Cell Lung CancerInitial and Second Stage Cohorts: Serum Concentrations of OlaparibCombination therapy - Day 15: 1-3 hour postdose8.038 mcg/mLGeometric Coefficient of Variation 38.24
Initial Stage: Small Cell Lung CancerInitial and Second Stage Cohorts: Serum Concentrations of OlaparibCombination therapy - Day 15: Pre-dose1.848 mcg/mLGeometric Coefficient of Variation 172.3
Initial Stage: Small Cell Lung CancerInitial and Second Stage Cohorts: Serum Concentrations of OlaparibMonotherapy - Day 1: Pre-doseNA mcg/mL
Initial Stage: Small Cell Lung CancerInitial and Second Stage Cohorts: Serum Concentrations of OlaparibMonotherapy - Day 22: 0.5-1 hour postdose7.212 mcg/mLGeometric Coefficient of Variation 55.84
Initial Stage: Small Cell Lung CancerInitial and Second Stage Cohorts: Serum Concentrations of OlaparibCombination therapy - Day 15: 0.5-1 hour postdose5.008 mcg/mLGeometric Coefficient of Variation 74.54
Initial Stage: Small Cell Lung CancerInitial and Second Stage Cohorts: Serum Concentrations of OlaparibCombination therapy - Day 15: 6-12 hour postdose5.186 mcg/mLGeometric Coefficient of Variation 49.67
Initial Stage: Small Cell Lung CancerInitial and Second Stage Cohorts: Serum Concentrations of OlaparibMonotherapy - Day 1: 0.5-1 hour postdose3.647 mcg/mLGeometric Coefficient of Variation 394.2
Initial Stage: Small Cell Lung CancerInitial and Second Stage Cohorts: Serum Concentrations of OlaparibCombination therapy - Day 15: 3-6 hour postdose7.811 mcg/mLGeometric Coefficient of Variation 38.68
Initial Stage: Breast CancerInitial and Second Stage Cohorts: Serum Concentrations of OlaparibMonotherapy - Day 1: 0.5-1 hour postdose2.093 mcg/mLGeometric Coefficient of Variation 1217
Initial Stage: Breast CancerInitial and Second Stage Cohorts: Serum Concentrations of OlaparibCombination therapy - Day 15: 3-6 hour postdose5.217 mcg/mLGeometric Coefficient of Variation 51.57
Initial Stage: Breast CancerInitial and Second Stage Cohorts: Serum Concentrations of OlaparibCombination therapy - Day 15: 1-3 hour postdose4.018 mcg/mLGeometric Coefficient of Variation 155.6
Initial Stage: Breast CancerInitial and Second Stage Cohorts: Serum Concentrations of OlaparibMonotherapy - Day 1: Pre-doseNA mcg/mL
Initial Stage: Breast CancerInitial and Second Stage Cohorts: Serum Concentrations of OlaparibMonotherapy - Day 22: Pre-dose0.8500 mcg/mLGeometric Coefficient of Variation 1501
Initial Stage: Breast CancerInitial and Second Stage Cohorts: Serum Concentrations of OlaparibMonotherapy - Day 22: 0.5-1 hour postdose5.370 mcg/mLGeometric Coefficient of Variation 100.9
Initial Stage: Breast CancerInitial and Second Stage Cohorts: Serum Concentrations of OlaparibCombination therapy - Day 15: Pre-dose0.6526 mcg/mLGeometric Coefficient of Variation 847.8
Initial Stage: Breast CancerInitial and Second Stage Cohorts: Serum Concentrations of OlaparibCombination therapy - Day 15: 6-12 hour postdose2.820 mcg/mLGeometric Coefficient of Variation 60.56
Initial Stage: Breast CancerInitial and Second Stage Cohorts: Serum Concentrations of OlaparibCombination therapy - Day 15: 0.5-1 hour postdose2.805 mcg/mLGeometric Coefficient of Variation 234.2
Initial Stage: Ovarian CancerInitial and Second Stage Cohorts: Serum Concentrations of OlaparibCombination therapy - Day 15: 3-6 hour postdose6.322 mcg/mLGeometric Coefficient of Variation 43.84
Initial Stage: Ovarian CancerInitial and Second Stage Cohorts: Serum Concentrations of OlaparibCombination therapy - Day 15: Pre-dose1.773 mcg/mLGeometric Coefficient of Variation 92.68
Initial Stage: Ovarian CancerInitial and Second Stage Cohorts: Serum Concentrations of OlaparibMonotherapy - Day 1: 0.5-1 hour postdose5.016 mcg/mLGeometric Coefficient of Variation 150.1
Initial Stage: Ovarian CancerInitial and Second Stage Cohorts: Serum Concentrations of OlaparibCombination therapy - Day 15: 6-12 hour postdose3.661 mcg/mLGeometric Coefficient of Variation 57.35
Initial Stage: Ovarian CancerInitial and Second Stage Cohorts: Serum Concentrations of OlaparibCombination therapy - Day 15: 0.5-1 hour postdose4.288 mcg/mLGeometric Coefficient of Variation 136.4
Initial Stage: Ovarian CancerInitial and Second Stage Cohorts: Serum Concentrations of OlaparibCombination therapy - Day 15: 1-3 hour postdose5.897 mcg/mLGeometric Coefficient of Variation 90.04
Initial Stage: Ovarian CancerInitial and Second Stage Cohorts: Serum Concentrations of OlaparibMonotherapy - Day 22: 0.5-1 hour postdose6.130 mcg/mLGeometric Coefficient of Variation 144.9
Initial Stage: Ovarian CancerInitial and Second Stage Cohorts: Serum Concentrations of OlaparibMonotherapy - Day 1: Pre-doseNA mcg/mL
Initial Stage: Ovarian CancerInitial and Second Stage Cohorts: Serum Concentrations of OlaparibMonotherapy - Day 22: Pre-dose1.242 mcg/mLGeometric Coefficient of Variation 534.6
Initial Stage: Gastric CancerInitial and Second Stage Cohorts: Serum Concentrations of OlaparibCombination therapy - Day 15: 1-3 hour postdose4.804 mcg/mLGeometric Coefficient of Variation 57.38
Initial Stage: Gastric CancerInitial and Second Stage Cohorts: Serum Concentrations of OlaparibMonotherapy - Day 1: Pre-doseNA mcg/mL
Initial Stage: Gastric CancerInitial and Second Stage Cohorts: Serum Concentrations of OlaparibMonotherapy - Day 1: 0.5-1 hour postdose2.321 mcg/mLGeometric Coefficient of Variation 291.7
Initial Stage: Gastric CancerInitial and Second Stage Cohorts: Serum Concentrations of OlaparibMonotherapy - Day 22: Pre-dose2.053 mcg/mLGeometric Coefficient of Variation 124.6
Initial Stage: Gastric CancerInitial and Second Stage Cohorts: Serum Concentrations of OlaparibMonotherapy - Day 22: 0.5-1 hour postdose5.350 mcg/mLGeometric Coefficient of Variation 75.21
Initial Stage: Gastric CancerInitial and Second Stage Cohorts: Serum Concentrations of OlaparibCombination therapy - Day 15: Pre-dose1.744 mcg/mLGeometric Coefficient of Variation 103.7
Initial Stage: Gastric CancerInitial and Second Stage Cohorts: Serum Concentrations of OlaparibCombination therapy - Day 15: 0.5-1 hour postdose3.226 mcg/mLGeometric Coefficient of Variation 60.08
Initial Stage: Gastric CancerInitial and Second Stage Cohorts: Serum Concentrations of OlaparibCombination therapy - Day 15: 3-6 hour postdose5.491 mcg/mLGeometric Coefficient of Variation 35.36
Initial Stage: Gastric CancerInitial and Second Stage Cohorts: Serum Concentrations of OlaparibCombination therapy - Day 15: 6-12 hour postdose3.679 mcg/mLGeometric Coefficient of Variation 52.8
Second Stage: Ovarian Cancer TripletInitial and Second Stage Cohorts: Serum Concentrations of OlaparibCombination therapy - Day 15: 0.5-1 hour postdose5.439 mcg/mLGeometric Coefficient of Variation 70.73
Second Stage: Ovarian Cancer TripletInitial and Second Stage Cohorts: Serum Concentrations of OlaparibCombination therapy - Day 15: Pre-dose1.544 mcg/mLGeometric Coefficient of Variation 102.3
Second Stage: Ovarian Cancer DoubletInitial and Second Stage Cohorts: Serum Concentrations of OlaparibCombination therapy - Day 15: 3-6 hour postdose5.717 mcg/mLGeometric Coefficient of Variation 57.3
Second Stage: Ovarian Cancer DoubletInitial and Second Stage Cohorts: Serum Concentrations of OlaparibCombination therapy - Day 15: 0.5-1 hour postdose5.922 mcg/mLGeometric Coefficient of Variation 98.89
Second Stage: Ovarian Cancer DoubletInitial and Second Stage Cohorts: Serum Concentrations of OlaparibCombination therapy - Day 15: Pre-dose1.400 mcg/mLGeometric Coefficient of Variation 423.2
Second Stage: Ovarian Cancer DoubletInitial and Second Stage Cohorts: Serum Concentrations of OlaparibCombination therapy - Day 15: 6-12 hour postdose3.023 mcg/mLGeometric Coefficient of Variation 74.63
Second Stage: Ovarian Cancer DoubletInitial and Second Stage Cohorts: Serum Concentrations of OlaparibCombination therapy - Day 15: 1-3 hour postdose7.644 mcg/mLGeometric Coefficient of Variation 55.09
Second Stage: Ovarian Cancer DoubletInitial and Second Stage Cohorts: Serum Concentrations of OlaparibCombination therapy - Day 15: Pre-dose0.9718 mcg/mLGeometric Coefficient of Variation 663.6
Second Stage: Ovarian Cancer DoubletInitial and Second Stage Cohorts: Serum Concentrations of OlaparibCombination therapy - Day 15: 0.5-1 hour postdose6.549 mcg/mLGeometric Coefficient of Variation 72.47
Secondary

Initial and Second Stage Cohorts: Time to Study Treatment Discontinuation or Death (TDT)

The TDT was defined as the time from start of study treatment (Day 1; start of olaparib monotherapy for initial stage cohorts) to the earlier of the date of study treatment discontinuation or death. The TDT was calculated using the Kaplan-Meier technique.

Time frame: From baseline (Day 1) until treatment discontinuation/death. Assessed until DCO 14 Jun 2019 and 17 Sep 2021 for initial and second stage cohorts, respectively

Population: The full analysis set included all participants who received at least 1 dose of study treatment and had no important protocol deviation resulting in exclusion from the analysis set as defined in the Statistical Analysis Plan (i.e, not meeting key eligibility criteria).

ArmMeasureValue (MEDIAN)
Initial Stage: Small Cell Lung CancerInitial and Second Stage Cohorts: Time to Study Treatment Discontinuation or Death (TDT)2.8 months
Initial Stage: Breast CancerInitial and Second Stage Cohorts: Time to Study Treatment Discontinuation or Death (TDT)7.8 months
Initial Stage: Ovarian CancerInitial and Second Stage Cohorts: Time to Study Treatment Discontinuation or Death (TDT)13.1 months
Initial Stage: Gastric CancerInitial and Second Stage Cohorts: Time to Study Treatment Discontinuation or Death (TDT)2.8 months
Second Stage: Ovarian Cancer TripletInitial and Second Stage Cohorts: Time to Study Treatment Discontinuation or Death (TDT)19.3 months
Second Stage: Ovarian Cancer DoubletInitial and Second Stage Cohorts: Time to Study Treatment Discontinuation or Death (TDT)15.9 months
Second Stage: Ovarian Cancer DoubletInitial and Second Stage Cohorts: Time to Study Treatment Discontinuation or Death (TDT)6.6 months
Secondary

Initial Stage Cohorts: DCR at Week 28

The DCR at 28 weeks was defined as the percentage of participants who had CR + PR + SD at 28 weeks. Participants demonstrated SD for a minimum interval of 27 weeks (minus 1 week to allow for an early assessment within the assessment window, i.e. 189 days) following the start of treatment. The DCR was determined using Investigator assessments according to RECIST v1.1.

Time frame: RECIST performed at baseline, at 4 weeks after first dose of olaparib monotherapy and every 8 weeks +/-7 days thereafter. Assessed until DCO 14 Jun 2019.

Population: The full analysis set included all participants who received at least 1 dose of study treatment and had no important protocol deviation resulting in exclusion from the analysis set as defined in the Statistical Analysis Plan (i.e, not meeting key eligibility criteria).

ArmMeasureValue (NUMBER)
Initial Stage: Small Cell Lung CancerInitial Stage Cohorts: DCR at Week 285.3 percentage of participants
Initial Stage: Breast CancerInitial Stage Cohorts: DCR at Week 2850.0 percentage of participants
Initial Stage: Ovarian CancerInitial Stage Cohorts: DCR at Week 2865.6 percentage of participants
Initial Stage: Gastric CancerInitial Stage Cohorts: DCR at Week 287.7 percentage of participants
Secondary

Initial Stage Cohorts: Percentage Change From Baseline in Target Tumor Size at Weeks 12 and 28

The percentage change in target tumor size at each timepoint (based on RECIST 1.1 target lesion measurements) was obtained for each participant taking the difference between the sum of the target lesions at each timepoint and the sum of the target lesions at baseline divided by the sum of the target lesions at baseline times 100. Baseline was defined as the last evaluable assessment prior to starting olaparib treatment.

Time frame: Baseline (Day 1) and Weeks 12 and 28. Assessed until DCO 14 Jun 2019

Population: The full analysis set included all participants who received at least 1 dose of study treatment and had no important protocol deviation resulting in exclusion from the analysis set as defined in the Statistical Analysis Plan (i.e, not meeting key eligibility criteria). Only participants with either a tumor size recorded at 12 and 28 weeks or enough information to impute a value were analyzed.

ArmMeasureGroupValue (MEAN)Dispersion
Initial Stage: Small Cell Lung CancerInitial Stage Cohorts: Percentage Change From Baseline in Target Tumor Size at Weeks 12 and 28Week 1217.23 percentage change in tumor sizeStandard Deviation 54.752
Initial Stage: Small Cell Lung CancerInitial Stage Cohorts: Percentage Change From Baseline in Target Tumor Size at Weeks 12 and 28Week 28-2.05 percentage change in tumor sizeStandard Deviation 15.671
Initial Stage: Breast CancerInitial Stage Cohorts: Percentage Change From Baseline in Target Tumor Size at Weeks 12 and 28Week 28-40.85 percentage change in tumor sizeStandard Deviation 39.541
Initial Stage: Breast CancerInitial Stage Cohorts: Percentage Change From Baseline in Target Tumor Size at Weeks 12 and 28Week 12-26.13 percentage change in tumor sizeStandard Deviation 43.033
Initial Stage: Ovarian CancerInitial Stage Cohorts: Percentage Change From Baseline in Target Tumor Size at Weeks 12 and 28Week 12-35.86 percentage change in tumor sizeStandard Deviation 29.791
Initial Stage: Ovarian CancerInitial Stage Cohorts: Percentage Change From Baseline in Target Tumor Size at Weeks 12 and 28Week 28-53.74 percentage change in tumor sizeStandard Deviation 31.147
Initial Stage: Gastric CancerInitial Stage Cohorts: Percentage Change From Baseline in Target Tumor Size at Weeks 12 and 28Week 1220.81 percentage change in tumor sizeStandard Deviation 75.944
Initial Stage: Gastric CancerInitial Stage Cohorts: Percentage Change From Baseline in Target Tumor Size at Weeks 12 and 28Week 28-41.00 percentage change in tumor sizeStandard Deviation 43.625
Secondary

Second Stage Cohorts: DCR at Week 56

The DCR at 56 weeks was defined as the percentage of participants who had CR + PR + SD at 56 weeks. Participants demonstrated SD for a minimum interval of 55 weeks (minus 1 week to allow for an early assessment within the assessment window, i.e. 385 days) following the start of treatment. The DCR was determined using Investigator assessments according to RECIST v1.1.

Time frame: RECIST performed at baseline, and every 8 weeks +/-7 days thereafter. Assessed until 17 Sep 2021.

Population: The full analysis set included all participants who received at least 1 dose of study treatment and had no important protocol deviation resulting in exclusion from the analysis set as defined in the Statistical Analysis Plan (i.e, not meeting key eligibility criteria).

ArmMeasureValue (NUMBER)
Initial Stage: Small Cell Lung CancerSecond Stage Cohorts: DCR at Week 5641.2 percentage of participants
Initial Stage: Breast CancerSecond Stage Cohorts: DCR at Week 5638.7 percentage of participants
Initial Stage: Ovarian CancerSecond Stage Cohorts: DCR at Week 569.4 percentage of participants
Secondary

Second Stage Cohort: Serum Concentrations of Bevacizumab

Blood samples were collected to determine the serum concentration of bevacizumab.

Time frame: Pre-dose and within 10 minutes of end of infusion on Days 1 and 85; Pre-dose on Days 29 and 169; and 90 days post last dose of bevacizumab. Assessed until DCO 17 Sep 2021

Population: The bevacizumab PK analysis set included all participants who received at least 1 dose of bevacizumab and provided any post-dose evaluable bevacizumab PK concentration.

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
Initial Stage: Small Cell Lung CancerSecond Stage Cohort: Serum Concentrations of BevacizumabDay 1: Pre-doseNA mcg/mL
Initial Stage: Small Cell Lung CancerSecond Stage Cohort: Serum Concentrations of BevacizumabDay 1: End of infusion243.7 mcg/mLGeometric Coefficient of Variation 30.01
Initial Stage: Small Cell Lung CancerSecond Stage Cohort: Serum Concentrations of BevacizumabDay 29: Pre-dose104.6 mcg/mLGeometric Coefficient of Variation 29.3
Initial Stage: Small Cell Lung CancerSecond Stage Cohort: Serum Concentrations of BevacizumabDay 85: Pre-dose145.5 mcg/mLGeometric Coefficient of Variation 28.26
Initial Stage: Small Cell Lung CancerSecond Stage Cohort: Serum Concentrations of BevacizumabDay 85: End of infusion364.0 mcg/mLGeometric Coefficient of Variation 23.74
Initial Stage: Small Cell Lung CancerSecond Stage Cohort: Serum Concentrations of BevacizumabDay 169: Pre-dose147.9 mcg/mLGeometric Coefficient of Variation 118
Initial Stage: Small Cell Lung CancerSecond Stage Cohort: Serum Concentrations of Bevacizumab90 days post last dose5.094 mcg/mLGeometric Coefficient of Variation 224.1
Secondary

Second Stage Cohorts: Percentage Change From Baseline in Target Tumor Size at Weeks 24 and 56

The percentage change in target tumor size at each timepoint (based on RECIST 1.1 target lesion measurements) was obtained for each participant taking the difference between the sum of the target lesions at each timepoint and the sum of the target lesions at baseline divided by the sum of the target lesions at baseline times 100. Baseline was defined as the last assessment prior to Cycle 1 Day 1.

Time frame: Baseline (Day 1) and Weeks 24 and 56. Assessed until DCO 17 Sep 2021

Population: The full analysis set included all participants who received at least 1 dose of study treatment and had no important protocol deviation resulting in exclusion from the analysis set as defined in the Statistical Analysis Plan (i.e, not meeting key eligibility criteria). Only participants with either a tumor size recorded at 24 and 56 weeks or enough information to impute a value were analyzed.

ArmMeasureGroupValue (MEAN)Dispersion
Initial Stage: Small Cell Lung CancerSecond Stage Cohorts: Percentage Change From Baseline in Target Tumor Size at Weeks 24 and 56Week 24-66.30 percentage change in tumor sizeStandard Deviation 26.672
Initial Stage: Small Cell Lung CancerSecond Stage Cohorts: Percentage Change From Baseline in Target Tumor Size at Weeks 24 and 56Week 56-77.74 percentage change in tumor sizeStandard Deviation 26.472
Initial Stage: Breast CancerSecond Stage Cohorts: Percentage Change From Baseline in Target Tumor Size at Weeks 24 and 56Week 24-43.00 percentage change in tumor sizeStandard Deviation 32.432
Initial Stage: Breast CancerSecond Stage Cohorts: Percentage Change From Baseline in Target Tumor Size at Weeks 24 and 56Week 56-60.00 percentage change in tumor sizeStandard Deviation 29.058
Initial Stage: Ovarian CancerSecond Stage Cohorts: Percentage Change From Baseline in Target Tumor Size at Weeks 24 and 56Week 24-35.63 percentage change in tumor sizeStandard Deviation 34.001
Initial Stage: Ovarian CancerSecond Stage Cohorts: Percentage Change From Baseline in Target Tumor Size at Weeks 24 and 56Week 56-39.54 percentage change in tumor sizeStandard Deviation 33.719
Secondary

Second Stage Expansion Cohort: DCR at Week 24

The DCR at 24 weeks was defined as the percentage of participants who had CR + PR + SD at 24 weeks. Participants demonstrated SD for a minimum interval of 23 weeks (minus 1 week to allow for an early assessment within the assessment window, i.e. 161 days) following the start of treatment. The DCR was determined using Investigator assessments according to RECIST v1.1.

Time frame: RECIST performed at baseline, and every 8 weeks +/-7 days thereafter. Assessed until 17 Sep 2021.

Population: The full analysis set included all participants who received at least 1 dose of study treatment and had no important protocol deviation resulting in exclusion from the analysis set as defined in the Statistical Analysis Plan (i.e, not meeting key eligibility criteria).

ArmMeasureValue (NUMBER)
Initial Stage: Small Cell Lung CancerSecond Stage Expansion Cohort: DCR at Week 2488.2 percentage of participants

Source: ClinicalTrials.gov · Data processed: Jul 15, 2026