A Study of Belrestotug Plus Dostarlimab Compared With Placebo Plus Pembrolizumab in Previously Untreated Participants With Programmed Death Ligand 1 (PD-L1) High Non-small-cell Lung Cancer (NSCLC)
A Randomized, Multicenter, Double-blind, Phase 3 Study to Investigate the Safety and Efficacy of Belrestotug in Combination With Dostarlimab Compared With Placebo in Combination With Pembrolizumab in Participants With Previously Untreated, Unresectable, Locally Advanced or Metastatic PD-L1 Selected Non-small Cell Lung Cancer (GALAXIES Lung-301)
Study Overview
Status
Status
Conditions
Conditions
Intervention / Treatment
Intervention / Treatment
Study Type
Study Type
Enrollment (Actual)
Enrollment
Phase
Phase
- Phase 3
Contacts and Locations
Study Contact
Study Contact
- Name: US GSK Clinical Trials Call Center
- Phone Number: 877-379-3718
- Email: GSKClinicalSupportHD@gsk.com
Study Contact Backup
- Name: EU GSK Clinical Trials Call Center
- Phone Number: +44 (0) 20 89904466
- Email: GSKClinicalSupportHD@gsk.com
Study Locations
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Buenos Aires, Argentina, 1425
- GSK Investigational Site
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Cipoletti Rio Negro, Argentina, R8324CVE
- GSK Investigational Site
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Ciudad Autonoma de Bueno, Argentina, C1056ABI
- GSK Investigational Site
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Ciudad Autonoma de Buenos Aire, Argentina, C1426AGE
- GSK Investigational Site
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Córdoba, Argentina, 5000
- GSK Investigational Site
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Florida, Argentina, 1602
- GSK Investigational Site
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Mendoza, Argentina, M5500AYB
- GSK Investigational Site
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Rosario, Argentina, S2002
- GSK Investigational Site
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Rosario, Argentina, S2002KDT
- GSK Investigational Site
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San Miguel de Tucumán, Argentina, T4000
- GSK Investigational Site
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Hasselt, Belgium, 3500
- GSK Investigational Site
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Mont Gaston, Belgium, 5530
- GSK Investigational Site
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Barretos, Brazil, 14784-400
- GSK Investigational Site
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Belém, Brazil, 66.073-005
- GSK Investigational Site
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CuritibaPR, Brazil, 80810-050
- GSK Investigational Site
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Florianópolis, Brazil, 88034-000
- GSK Investigational Site
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Fortaleza, Brazil, 60336-232
- GSK Investigational Site
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Londrina, Brazil, 86015-520
- GSK Investigational Site
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Porto VelhoRondOnia, Brazil, 76.834-899
- GSK Investigational Site
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SAo JosE Do Rio PretoSP, Brazil, 15090-000
- GSK Investigational Site
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Salvador, Brazil, 40414-120
- GSK Investigational Site
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São Paulo, Brazil, 04312903
- GSK Investigational Site
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Vitória, Brazil, 29043-260
- GSK Investigational Site
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Haskovo, Bulgaria, 6300
- GSK Investigational Site
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Plovdiv, Bulgaria, 4004
- GSK Investigational Site
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Nova Scotia
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Halifax, Nova Scotia, Canada, B3H 1V7
- GSK Investigational Site
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Chengdu, China, 610000
- GSK Investigational Site
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Hangzhou, China, 310006
- GSK Investigational Site
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Hangzhou, China
- GSK Investigational Site
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Hefei, China, 230001
- GSK Investigational Site
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Nanjing, China, 210006
- GSK Investigational Site
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Shanghai, China, 200030
- GSK Investigational Site
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Kuopio, Finland, 70210
- GSK Investigational Site
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Turku, Finland, 20520
- GSK Investigational Site
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Angers, France, 49000
- GSK Investigational Site
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Boulogne-Billancourt, France, 92100
- GSK Investigational Site
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Limoges, France, 87042
- GSK Investigational Site
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Lorient, France, 56100
- GSK Investigational Site
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Pessac, France, 33064
- GSK Investigational Site
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Rennes, France, 35033
- GSK Investigational Site
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Hamburg, Germany, 20251
- GSK Investigational Site
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Shatin, Hong Kong
- GSK Investigational Site
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Ahmedabad-380016, India, 380 016
- GSK Investigational Site
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Apex Wellness Hospital, India, 422005
- GSK Investigational Site
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Bangalore, India, 560066
- GSK Investigational Site
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Bangalore, India, 560085
- GSK Investigational Site
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Belagavi, India, 590010
- GSK Investigational Site
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Bhubaneshwar, India, 751007
- GSK Investigational Site
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Bhubaneswar, India, 751019
- GSK Investigational Site
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Gūrgaon, India, 122001
- GSK Investigational Site
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Kolkata, India, 700020
- GSK Investigational Site
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New Delhi, India, 110075
- GSK Investigational Site
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Kolhapur
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Gokul Shirgoan, Kolhapur, India, 416234
- GSK Investigational Site
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Aichi, Japan, 466-8560
- GSK Investigational Site
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Chiba, Japan, 273-8588
- GSK Investigational Site
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Ehime, Japan, 790-0024
- GSK Investigational Site
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Ehime, Japan, 791-0280
- GSK Investigational Site
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Fukuoka, Japan, 812-8582
- GSK Investigational Site
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Fukuoka, Japan, 814-0180
- GSK Investigational Site
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Gifu, Japan, 503-8502
- GSK Investigational Site
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Gunma, Japan, 377-0280
- GSK Investigational Site
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Hiroshima, Japan, 737-0023
- GSK Investigational Site
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Hokkaido, Japan, 062-0931
- GSK Investigational Site
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Hyōgo, Japan, 665-0827
- GSK Investigational Site
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Hyōgo, Japan, 670-8520
- GSK Investigational Site
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Kanagawa, Japan, 236-0051
- GSK Investigational Site
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Kyoto, Japan, 612-8555
- GSK Investigational Site
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Mie, Japan, 515-8544
- GSK Investigational Site
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Miyagi, Japan, 981-1293
- GSK Investigational Site
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Miyagi, Japan, 981-0914
- GSK Investigational Site
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Nagasaki, Japan, 852-8501
- GSK Investigational Site
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Niigata, Japan, 951-8566
- GSK Investigational Site
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Okayama, Japan, 710-8602
- GSK Investigational Site
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Osaka, Japan, 596-8501
- GSK Investigational Site
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Osaka, Japan, 591-8555
- GSK Investigational Site
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Tochigi, Japan, 329-0498
- GSK Investigational Site
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Tokyo, Japan, 104-0045
- GSK Investigational Site
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Tokyo, Japan, 162-8655
- GSK Investigational Site
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Tokyo, Japan, 113-8603
- GSK Investigational Site
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Tottori, Japan, 683-8504
- GSK Investigational Site
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Wakayama, Japan, 641-8510
- GSK Investigational Site
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Guadajalara, Mexico, 44280
- GSK Investigational Site
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La Paz BCS, Mexico, 23040
- GSK Investigational Site
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Mexico City, Mexico, 06700
- GSK Investigational Site
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San Luis Potosí City, Mexico, 78209
- GSK Investigational Site
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Alkmaar, Netherlands, 1815 JD
- GSK Investigational Site
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Enschede, Netherlands, 7512 KZ
- GSK Investigational Site
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Panama City, Panama
- GSK Investigational Site
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Punta Pacifica Panama City Panama, Panama
- GSK Investigational Site
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Daegu, South Korea, 41404
- GSK Investigational Site
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Incheon, South Korea, 21565
- GSK Investigational Site
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Seoul, South Korea, 02841
- GSK Investigational Site
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Seoul, South Korea, 03312
- GSK Investigational Site
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Seoul, South Korea, 05505
- GSK Investigational Site
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Seoul, South Korea, 08308
- GSK Investigational Site
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Seoul, South Korea, 120-752
- GSK Investigational Site
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A Coruña, Spain, 15006
- GSK Investigational Site
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Aravaca, Spain, 28013
- GSK Investigational Site
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BaracaldoVizcaya, Spain, 48903
- GSK Investigational Site
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Barcelona, Spain, 08025
- GSK Investigational Site
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Barcelona, Spain, 08035
- GSK Investigational Site
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Barcelona, Spain, 08003
- GSK Investigational Site
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Barcelona, Spain, 08023
- GSK Investigational Site
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Cartagena Murcia, Spain, 30202
- GSK Investigational Site
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Córdoba, Spain, 14004
- GSK Investigational Site
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Jaén, Spain, 23007
- GSK Investigational Site
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Las Palmas de Gran Canar, Spain, 35016
- GSK Investigational Site
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Madrid, Spain, 28007
- GSK Investigational Site
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Madrid, Spain, 28033
- GSK Investigational Site
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Madrid, Spain, 28010
- GSK Investigational Site
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Madrid, Spain, 28222
- GSK Investigational Site
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Málaga, Spain, 29016
- GSK Investigational Site
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Oviedo, Spain, 33006
- GSK Investigational Site
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Pamplona, Spain, 31008
- GSK Investigational Site
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Salamanca, Spain, 37007
- GSK Investigational Site
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Santander, Spain, 39008
- GSK Investigational Site
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Seville, Spain, 41014
- GSK Investigational Site
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Valladolid, Spain, 47003
- GSK Investigational Site
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Gävle, Sweden, SE-801 87
- GSK Investigational Site
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Kaohsiung City, Taiwan, 807
- GSK Investigational Site
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Taipei, Taiwan, 23561
- GSK Investigational Site
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Adana, Turkey (Türkiye), 1120
- GSK Investigational Site
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Ankara, Turkey (Türkiye), 06560
- GSK Investigational Site
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Ankara, Turkey (Türkiye), 06800
- GSK Investigational Site
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Istanbul, Turkey (Türkiye), 34722
- GSK Investigational Site
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Florida
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Ocala, Florida, United States, 34474
- GSK Investigational Site
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Hawaii
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Honolulu, Hawaii, United States, 96819
- GSK Investigational Site
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Kentucky
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Lexington, Kentucky, United States, 40509
- GSK Investigational Site
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Lexington, Kentucky, United States, 40503
- GSK Investigational Site
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Michigan
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Ann Arbor, Michigan, United States, 48106
- GSK Investigational Site
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Nebraska
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Omaha, Nebraska, United States, 68114
- GSK Investigational Site
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Tennessee
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Nashville, Tennessee, United States, 37203
- GSK Investigational Site
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Texas
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Fort Worth, Texas, United States, 76104
- GSK Investigational Site
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Washington
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Olympia, Washington, United States, 98506
- GSK Investigational Site
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Participation Criteria
Eligibility Criteria
Eligibility Criteria
Ages Eligible for Study
- Adult
- Older Adult
Accepts Healthy Volunteers
Description
Inclusion Criteria:
- Has a histologically or cytologically confirmed diagnosis of locally advanced, unresectable NSCLC (not eligible for curative surgery and/or definitive radiotherapy with or without chemotherapy), or Metastatic NSCLC
- Has not received prior systemic therapy for their locally advanced or metastatic NSCLC.
- Provides a fresh tumor tissue sample obtained at the time of or after the initial diagnosis of locally advanced or metastatic NSCLC.
- Has a PD-L1-high (Tumor cells [TC] ≥50%) tumor
- Has measurable disease (at least 1 target lesion) based on RECIST 1.1
- Has an Eastern Cooperative Oncology Group (ECOG) Performance status (PS) score of 0 or 1.
- Has adequate organ function
Exclusion Criteria:
Has NSCLC with a tumor that harbors any of the following molecular alterations:
- Epidermal growth factor receptor (EGFR) mutations that are sensitive to available targeted inhibitor therapy
- Anaplastic lymphoma kinase (ALK) translocations that are sensitive to available targeted inhibitor therapy
- Any other known genomic aberrations or oncogenic driver mutations for which a locally approved targeted therapy is available for first line treatment of locally advanced or metastatic NSCLC.
- Has had surgery within 4 weeks of the first dose of study intervention and has not recovered from AEs (i.e., has any ongoing surgery-related events ≥ Grade 1)/complications related to surgery or has received lung radiation therapy of >30 gray (Gy) within 6 months
- Has received prior therapy with any immune checkpoint inhibitors, including antibodies or drugs targeting PD-(L)1, Cytotoxic T-lymphocyte-associated protein 4 (CTLA-4), T cell immunoglobulin and ITIM domain (TIGIT), or other checkpoint pathways.
- Has never smoked, defined as smoking <100 tobacco cigarettes in a lifetime.
- Has an invasive malignancy or history of invasive malignancy other than the disease under study within the last 5 years, with the exception of those with a negligible risk of metastasis or death and/or treated with expected curative outcome.
- Has symptomatic, untreated, or actively progressin g brain metastases or leptomeningeal disease
- Has autoimmune disease or syndrome (current or history thereof) that required systemic treatment within the past 2 years.
- Has received any live vaccine within 30 days prior to first dose of study intervention.
- Has any history of idiopathic pulmonary fibrosis, organizing pneumonia, drug induced pneumonitis, idiopathic pneumonitis, or evidence of active pneumonitis.
- Has symptomatic ascites, pleural effusion, or pericardial effusion.
- Has active inflammatory bowel disease
- Has a history of significant acute or chronic cardiac diagnosis requiring intervention/treatment in the last 6 months.
- Has severe infection or complication thereof 4 weeks prior to randomisation including active tuberculosis.
- Has a history of allogeneic tissue/stem cell transplant or solid organ transplant.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Quadruple
Number of Arms
Arms and Interventions
Participant Group / ArmParticipant Group / Arm |
Intervention / TreatmentIntervention / Treatment |
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Experimental: Dostarlimab plus belrestotug
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Dostarlimab will be administered.
Belrestotug will be administered.
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Active Comparator: Pembrolizumab plus placebo
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Placebo will be administered.
Pembrolizumab will be administered.
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What is the study measuring?
Primary Outcome Measures
Primary Outcome Measures
Outcome Measure |
Time Frame |
|---|---|
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Number of Participants with Treatment Emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)
Time Frame: Up to approximately 138 weeks
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Up to approximately 138 weeks
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Number of Participants with TEAEs or SAEs leading to dose withdrawals or treatment discontinuation
Time Frame: Up to approximately 138 weeks
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Up to approximately 138 weeks
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Secondary Outcome Measures
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
|---|---|---|
|
Objective Response Rate (ORR)
Time Frame: Up to approximately 5 years
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ORR is defined as the percentage of participants achieving confirmed complete response (CR) or confirmed partial response (PR) per RECIST version 1.1 by investigator assessment.
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Up to approximately 5 years
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Molecular Response Rate (MRR)
Time Frame: Up to approximately 5 years
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MRR is defined as the percentage of participants with a molecular response (i.e., a greater than or equal to 50% reduction in Circulating tumor deoxyribonucleic acid (ctDNA) levels relative to baseline).
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Up to approximately 5 years
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PFS per RECIST 1.1 by investigator assessment
Time Frame: Up to approximately 5 years
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PFS per RECIST 1.1 by investigator assessment, defined as the time from the date of randomization to the date of first documented PD or death due to any cause, whichever comes first.
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Up to approximately 5 years
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Duration of Response (DOR)
Time Frame: Up to approximately 5 years
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DOR per RECIST v 1.1 by investigator assessment, defined as the time from the date of first confirmed response (CR or PR) to the date of first documented PD or death due to any cause, whichever comes first.
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Up to approximately 5 years
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Time to first subsequent therapy (TFST)
Time Frame: Up to approximately 5 years
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TFST is defined as the time from the date of randomization to the date of the first subsequent anticancer therapy or death, whichever occurs first.
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Up to approximately 5 years
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Number of Participants with Treatment Emergent Adverse Events (TEAEs), Serious Adverse Events (SAEs) and Adverse Events of Special Interest (AESIs)
Time Frame: Up to approximately 5 years
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Up to approximately 5 years
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Number of Participants with TEAEs or SAEs leading to dose modifications or study intervention discontinuation
Time Frame: Up to approximately 5 years
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Up to approximately 5 years
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Time to Deterioration (TTD) of lung cancer symptoms
Time Frame: Up to approximately 5 years
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TTD of lung cancer symptoms is defined as time from randomization to the first confirmed clinically meaningful deterioration as assessed by the Non-Small Cell Lung Cancer Symptom Assessment Questionnaire (NSCLC SAQ) total score.
The NSCLC-SAQ is a 7-item instrument that assesses symptoms relevant to NSCLC.
It contains five domains and accompanying items that are identified as symptoms of NSCLC: cough (1 item), pain (2), dyspnea (1), fatigue (2), and appetite (1).
The (total) lowest score possible is 0, and the highest (total) score possible is 20.
Higher scores indicate more severe symptoms.
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Up to approximately 5 years
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TTD in physical functioning
Time Frame: Up to approximately 5 years
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TTD in physical functioning is defined as time from randomization to the first confirmed clinically meaningful deterioration as assessed by the European Organisation for Research and Treatment of Cancer Quality of Life Questionnaire 30-item Core Module (EORTC QLQ C30).
The EORTC QLQ C30 is a 30-item questionnaire.
Participant responses will be scored in a range of 0-100.
A higher value indicates a better level of physical function.
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Up to approximately 5 years
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Number of participants with anti-drug antibodies (ADA) against Dostarlimab
Time Frame: Up to approximately 5 years
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Up to approximately 5 years
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Number of participants with ADA against Belrestotug
Time Frame: Up to approximately 5 years
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Up to approximately 5 years
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Collaborators and Investigators
Sponsor
Sponsor
Collaborators
Collaborators
Study record dates
Study Major Dates
Study Start (Actual)
Study Start
Primary Completion (Estimated)
Primary Completion
Study Completion (Estimated)
Study Completion
Study Registration Dates
First Submitted
First Submitted
First Submitted That Met QC Criteria
First Submitted That Met QC Criteria
First Posted (Actual)
First Posted
Study Record Updates
Last Update Posted (Estimated)
Last Update Posted
Last Update Submitted That Met QC Criteria
Last Update Submitted That Met QC Criteria
Last Verified
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
Other Study ID Numbers
- 213823
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
IPD Plan Description
IPD Sharing Time Frame
IPD Sharing Access Criteria
IPD Sharing Supporting Information Type
- STUDY_PROTOCOL
- SAP
- ICF
- CSR
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
product manufactured in and exported from the U.S.
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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