Durvalumab vs Placebo With Stereotactic Body Radiation Therapy in Early Stage Unresected Non-small Cell Lung Cancer (NSCLC) Patients / Osimertinib Following SBRT in Patients With Early Stage Unresected NSCLC Harboring an EGFR Mutation (PACIFIC-4)
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ClinicalTrials.gov Identifier: NCT03833154 |
Recruitment Status :
Recruiting
First Posted : February 6, 2019
Last Update Posted : May 15, 2023
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This is a Phase III, randomized, placebo-controlled, double-blind, multi-center study assessing the efficacy and safety of durvalumab with SoC SBRT versus placebo with SoC SBRT in patients with unresected clinical Stage I/II lymph node-negative (T1 to T3N0M0) NSCLC.
An additional cohort will assess Osimertinib following SBRT in patients with early stage unresected T1 to T3N0M0 NSCLC harbouring an EGFR mutation.
Condition or disease | Intervention/treatment | Phase |
---|---|---|
Carcinoma, Non-Small-Cell Lung | Drug: Durvalumab Other: Placebo Drug: Osimertinib (single-arm, open-label) | Phase 3 |
Patients who are to receive SoC SBRT as definitive treatment of Stage I/II lymph node-negative NSCLC and confirmed to meet all eligibility criteria will be randomized 1:1 to Durvalumab or placebo.
The primary objective of main cohort is to assess the efficacy of Durvalumab with SoC SBRT compared to placebo with SoC SBRT in terms of PFS. Key secondary is to assess the efficacy of Durvalumab with SoC SBRT compared to placebo with SoC SBRT in terms of Overall Survival (OS).
In addition, a study cohort with a sufficient number of patients harboring an EGFR mutation, will receive Osimertinib treatment after completion of SoC SBRT as definitive treatment of Stage I/II lymph node-negative NSCLC. The primary objective of Osimertinib cohort is to assess efficacy of Osimertinib following SoC SBRT in terms of 4years-PFS. Key secondary objectives include safety, OS and efficacy of Osimertininb treatment with SBRT.
Study Type : | Interventional (Clinical Trial) |
Estimated Enrollment : | 690 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor) |
Masking Description: | Double- Blind |
Primary Purpose: | Treatment |
Official Title: | A Phase III, Randomized, Placebo-controlled, Double-blind, Multi-center, International Study of Durvalumab With Stereotactic Body Radiation Therapy (SBRT) for the Treatment of Patients With Unresected Stage I/II, Lymph-node Negative Non-small Cell Lung Cancer (PACIFIC-4/RTOG-3515) Osimertinib Following SBRT, a Single Arm Cohort for Patients With Unresected Stage I/II, Lymph Node Negative NSCLC Harboring a Sensitizing EGFR Mutation |
Actual Study Start Date : | March 6, 2019 |
Estimated Primary Completion Date : | March 31, 2026 |
Estimated Study Completion Date : | April 4, 2028 |

Arm | Intervention/treatment |
---|---|
Experimental: SoC SBRT + Durvalumab Therapy (Main Cohort)
SBRT - delivered in 3, 4, 5 or 8 fractions. Durvalumab (PD-L1 monoclonal antibody) 1500 mg every 4 weeks [q4w] intravenously [iv] for up to 24 months or until progression or other discontinuation criteria are met. |
Drug: Durvalumab
Durvalumab 1500 mg every 4 weeks [q4w] intravenously [iv] for up to 24 months or until progression or other discontinuation criteria are met.
Other Name: MEDI4736 |
Placebo Comparator: SoC SBRT + Placebo Therapy (Main Cohort)
SBRT - delivered in 3, 4, 5 or 8 fractions. Placebo (matching placebo for infusion every 4 weeks iv for up to 24 months or until progression or other discontinuation criteria are met. |
Other: Placebo
Matching placebo for infusion every 4 weeks iv for up to 24 months or until progression or other discontinuation criteria are met. |
Experimental: SoC SBRT + Osimertinib Therapy (Osimertinib cohort, single-arm, separate cohort)
SBRT delivered in 3, 4, 5 or 8 fractions Osimertinib 80mg every day [qd] for oral administration up to 36 months or until progression. Osimertinib treatment should start within 7 to 14 days after completion of SBRT |
Drug: Osimertinib (single-arm, open-label)
Osimertinib 80 mg every day [qd] orally for up to 36 months or until progression or other discontinuation criteria are met. Osimertinib treatment should start from 7 to 14 days after completion of SBRT |
- Progression-Free Survival (PFS) assessed by Blinded Independent Central Review (BICR) according to RECIST 1.1 in subpopulation of patients with Stage I/II NSCLC [ Time Frame: from randomization up to 6 years ]Main Cohort
- 4-year Progression-Free Survival (4y-PFS) by ICR according to RECIST 1.1 criteria [ Time Frame: from randomization up to 5 years ]Osimertinib Cohort
- Progression-Free Survival (PFS) assessed by BICR per RECIST 1.1 in all randomised patients with Stage I/II NSCLC [ Time Frame: from randomization up to 6 years ]Main Cohort
- Overall Survival (OS) [ Time Frame: from randomization up to 7 years ]Main Cohort
- Lung cancer-specific mortality [ Time Frame: from randomization up to 7 years ]Main Cohort
- Maximum Plasma concentration (Cmax) [ Time Frame: 12 weeks after last dose ]Main Cohort
- Detection of ADA neutralising antibodies titers [ Time Frame: up to 6 months after last dose ]Main Cohort
- Health-related quality of life in patients treated with durvalumab with SoC SBRT compared to placebo with SoC SBRT using the EORTC QLQ-C30 [ Time Frame: from randomization up to 7 years ]Main Cohort
- Proportion of patients alive and progression free at 24 months from randomisation (PFS24) assessed by BICR according to RECIST 1.1 [ Time Frame: at 24 months following randomization ]Main Cohort
- Time to progression (TTP) assessed by BICR according to RECIST 1.1 [ Time Frame: from randomization up to 6 years ]Main Cohort
- Time to death or distant metastasis (TTDM) assessed by BICR according to RECIST 1.1 [ Time Frame: from randomization up to 6 years ]Main Cohort
- Time from randomisation to second progression (PFS2) as defined by local standard clinical practice [ Time Frame: from randomization up to 7 years ]Main Cohort
- Trough Concentration (Ctrough) [ Time Frame: up to 3 months after last dose ]Main Cohort
- Assessment of AEs by CTCAE v 5.0 as measures of the safety and tolerability of Durvalumab with SoC SBRT compared to placebo with SoC SBRT [ Time Frame: up to 3 months after last dose ]Main Cohort
- Assessment of AEs by CTCAE v 5.0 as measures of the safety, tolerability and compliance of osimertinib with SoC SBRT therapy [ Time Frame: Up to 35 days after last dose ]Osimertinib Cohort
- WHO performance status [ Time Frame: from randomization Up to 5 years ]Osimertinib Cohort
- ECG QT interval [ Time Frame: Up to 156 weeks of treatment or treatment discontinuation ]Osimertinib Cohort
- Overall Survival [ Time Frame: from randomization Up to 5 years ]Osimertinib Cohort
- Lung cancer mortality [ Time Frame: from randomization Up to 5 years ]Osimertinib Cohort
- Time To Progression (TTP) [ Time Frame: from randomization Up to 5 years ]Osimertinib Cohort
- Time to CNS progression [ Time Frame: from randomization Up to 5 years ]Osimertinib Cohort
- PFS2 [ Time Frame: from randomization up to 5 years ]Osimertinib Cohort
- Site(s) of disease progression [ Time Frame: from randomization up to 5 years ]Osimertinib Cohort
- PFS by ICR using RECIST 1.1 [ Time Frame: from randomization up to 5 years ]Osimertinib Cohort

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.
Ages Eligible for Study: | 18 Years to 130 Years (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Main Cohort Key Inclusion Criteria:
- Age ≥18 years
- Planned SoC SBRT as definitive treatment
- WHO/ECOG PS of 0, 1 or 2
- Life expectancy of at least 12 weeks
- Body weight >30 kg
- Submission of tumor tissue sample if available
- Adequate organ and marrow function required
- Patients with central or peripheral lesions are eligible
- Staging studies must be done during screening (PET-CT within 10 weeks)
- Patients with a history of metachronous NSCLC and synchronous lesions are eligible with some exceptions
Main Cohort Key Exclusion Criteria:
- Mixed small cell and non-small cell cancer
- History of allogeneic organ transplantation
- History of another primary malignancy with exceptions
- History of active primary immunodeficiency
- Epidermal growth factor receptor local testing is strongly recommended prior to enrollment. Patients with a tumor harboring an EGFRm per local testing will be excluded from the main cohort
- Prior exposure to immune-mediated therapy with exceptions
Osimertinib Cohort Key Inclusion Criteria
- Age ≥18 years
- Planned SoC SBRT as definitive treatment
- World Health Organization (WHO)/ECOG PS of 0, 1, or 2
- Patients with central or peripheral lesions are eligible
- Patients with a history of metachronous NSCLC and synchronous lesions are eligible with some exceptions
- Staging studies must be done during screening (PET-CT within 10 weeks)
- Submission of available tumor tissue sample
- Confirmation by local laboratory that the tumor harbors one of the 2 common EGFR mutations known to be associated with EGFR-TKI sensitivity (Ex19del, L858R)
- Adequate bone marrow reserve or organ function required
- Female patients should be using highly effective contraceptive measures
- Male patients should be asked to use barrier contraceptives (ie, condoms) during sex with all partners during the trial and avoid procreation
Osimertinib Cohort Key Exclusion Criteria
- Mixed small cell and non-small cell cancer
- Patients currently receiving potent inducers of CYP3A4
- Patients with known or increased risk factor for QTc prolongation
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Treatment with any of the following:
- Preoperative or adjuvant platinum-based or other chemotherapy for the disease under investigation
- Prior treatment with neoadjuvant or adjuvant EGFR TKI
- Patients currently receiving (or unable to stop use prior to receiving the first dose of study treatment) medications or herbal supplements known to be potent inducers of CYP3A4
- Refractory nausea and vomiting, chronic gastrointestinal diseases, inability to swallow the formulated product, or previous significant bowel resection that would preclude adequate absorption of osimertinib
-
Any of the following cardiac criteria
- Mean resting corrected QT interval >470 msec, obtained from 3 ECGs
- Any clinically important abnormalities in rhythm, conduction, or morphology of resting ECG.
- Any factors that increase the risk of QTc prolongation or risk of arrhythmic events, or unexplained -sudden death under 40 years of age in first-degree relatives or any concomitant medication known to prolong the QT interval
- Past medical history of ILD, drug-induced ILD, radiation pneumonitis which required steroid treatment, or any evidence of clinically active ILD

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03833154
Contact: AstraZeneca Clinical Study Information Center | 1-877-240-9479 | information.center@astrazeneca.com | |
Contact: Astrazeneca Cancer Study Locator Service | 1-877-400-4656 | AstraZeneca@emergingmed.com |

Responsible Party: | AstraZeneca |
ClinicalTrials.gov Identifier: | NCT03833154 |
Other Study ID Numbers: |
D9103C00001 2018-002572-41 ( EudraCT Number ) |
First Posted: | February 6, 2019 Key Record Dates |
Last Update Posted: | May 15, 2023 |
Last Verified: | May 2023 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | Yes |
Plan Description: | 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. |
Supporting Materials: |
Study Protocol Statistical Analysis Plan (SAP) |
Time Frame: | 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 rerefer to our disclosure commitment at https://astrazenecagrouptrials.pharmacm.com/ST/Submission/Disclosure. |
Access Criteria: | When a request has been approved AstraZeneca will provide access to the de-identified 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. |
URL: | https://astrazenecagroup-dt.pharmacm.com/DT/Home |
Studies a U.S. FDA-regulated Drug Product: | Yes |
Studies a U.S. FDA-regulated Device Product: | No |
NSCLC Early-Stage NSCLC Lung cancer Double- Blind PD-L1 MEDI4736 Durvalumab Osimertinib |
PFS OS Unresected lung cancer Inoperable Operable SBRT SABR EGFR |
Lung Neoplasms Carcinoma, Non-Small-Cell Lung Respiratory Tract Neoplasms Thoracic Neoplasms Neoplasms by Site Neoplasms Lung Diseases Respiratory Tract Diseases Carcinoma, Bronchogenic |
Bronchial Neoplasms Durvalumab Osimertinib Antineoplastic Agents, Immunological Antineoplastic Agents Protein Kinase Inhibitors Enzyme Inhibitors Molecular Mechanisms of Pharmacological Action |