Study of XL092 + Atezolizumab vs Regorafenib in Participants With Metastatic Colorectal Cancer (STELLAR-303)
A Randomized Open-Label Phase 3 Study of XL092 + Atezolizumab vs Regorafenib in Subjects With Metastatic Colorectal Cancer
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: Exelixis Clinical Trials
- Phone Number: 1-888-EXELIXIS (888-393-5494)
- Email: druginfo@exelixis.com
Study Contact Backup
- Name: Backup or International
- Phone Number: 650-837-7400
Study Locations
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Albury, Australia, 2640
- Exelixis Clinical Site #83
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Bankstown, Australia, 2200
- Exelixis Clinical Site #53
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Bedford Park, Australia, 5042
- Exelixis Clinical Site #117
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Heidelberg, Australia, 3084
- Exelixis Clinical Site #97
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Melbourne, Australia, 3002
- Exelixis Clinical Site #19
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Melbourne, Australia, 3021
- Exelixis Clinical Site #23
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Port Macquarie, Australia, 2444
- Exelixis Clinical Site #27
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Woodville South, Australia, 5011
- Exelixis Clinical Site #64
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Antwerp, Belgium, 2300
- Exelixis Clinical Site #43
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Brussels, Belgium, 1200
- Exelixis Clinical Site #51
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Namur, Belgium, 5000
- Exelixis Clinical Site #35
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Besançon, France, 25030
- Exelixis Clinical Site #52
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Dijon, France, 21079
- Exelixis Clinical Site #84
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Herbault, France, 34298
- Exelixis Clinical Site #88
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Lyon, France, 69008
- Exelixis Clinical Site #71
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Marseille, France, 13385
- Exelixis Clinical Site #87
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Paris, France, 75020
- Exelixis Clinical Site #38
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Suresnes, France, 92150
- Exelixis Clinical Site #93
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Dresden, Germany, 01307
- Exelixis Clinical Site #109
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Frankfurt am Main, Germany, 60488
- Exelixis Clinical Site #113
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Hamburg, Germany, 20249
- Exelixis Clinical Site #61
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Hamburg, Germany, 22763
- Exelixis Clinical Site #63
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München, Germany, 81737
- Exelixis Clinical Site #91
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Niedersach
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Hanover, Niedersach, Germany, 30625
- Exelixis Clinical Site #127
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Hong Kong, Hong Kong
- Exelixis Clinical Site #25
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Hong Kong, Hong Kong
- Exelixis Clinical Site #33
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Budapest, Hungary, 1097
- Exelixis Clinical Site #41
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Budapest, Hungary, 1122
- Exelixis Clinical Site #129
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Debrecen, Hungary, 4302
- Exelixis Clinical Site #48
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Győr, Hungary, 9024
- Exelixis Clinical Site #122
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Szabolcs-Szatmar-Bereg County
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Nyíregyháza, Szabolcs-Szatmar-Bereg County, Hungary, 4400
- Exelixis Clinical Site #128
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Auckland, New Zealand, 1023
- Exelixis Clinical Site #57
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Dunedin, New Zealand, 9016
- Exelixis Clinical Site #49
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Hamilton, New Zealand, 3204
- Exelixis Clinical Site #69
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Wellington, New Zealand, 6021
- Exelixis Clinical Site #104
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Bydgoszcz, Poland, 85-796
- Exelixis Clinical Site #20
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Opole, Poland, 45-061
- Exelixis Clinical Site #68
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Siedlce, Poland, 08-110
- Exelixis Clinical Site #26
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Tomaszów Mazowiecki, Poland, 97-200
- Exelixis Clinical Site #42
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Warsaw, Poland, 02-507
- Exelixis Clinical Site #31
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Almada, Portugal, 2805-267
- Exelixis Clinical Site #108
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Coimbra, Portugal, 3000-075
- Exelixis Clinical Site #120
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Guimarães, Portugal, 4835-044
- Exelixis Clinical Site #99
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Lisbon, Portugal, 1500-650
- Exelixis Clinical Site #131
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Lisbon, Portugal, 1649-035
- Exelixis Clinical Site #124
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Lisbon, Portugal, 400-038
- Exelixis Clinical Site #96
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Singapore, Singapore, 119228
- Exelixis Clinical Site #132
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Singapore, Singapore, 168583
- Exelixis Clinical Site #100
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Singapore, Singapore, 217562
- Exelixis Clinical Site #39
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Singapore, Singapore, 258499
- Exelixis Clinical Site #98
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Singapore, Singapore, 329563
- Exelixis Clinical Site #94
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Goyang-si, South Korea, 10408
- Exelixis Clinical Site #36
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Gyeonggi-do, South Korea, 14068
- Exelixis Clinical Site #29
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Hwasun, South Korea, 58128
- Exelixis Clinical Site #28
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Seongnam-si, South Korea, 13620
- Exelixis Clinical Site #37
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Seoul, South Korea, 03080
- Exelixis Clinical Site #34
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Seoul, South Korea, 03722
- Exelixis Clinical Site #45
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Seoul, South Korea, 05505
- Exelixis Clinical Site #66
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Seoul, South Korea, 06351
- Exelixis Clinical Site #46
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Seoul, South Korea, 06591
- Exelixis Clinical Site #54
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Seoul, South Korea, 08308
- Exelixis Clinical Site #44
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Seoul, South Korea
- Exelixis Clinical Site #40
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Barcelona, Spain, 08023
- Exelixis Clinical Site #78
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Barcelona, Spain, 08025
- Exelixis Clinical Site #21
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Barcelona, Spain, 08035
- Exelixis Clinical Site #86
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Barcelona, Spain, 08908
- Exelixis Clinical Site #112
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Lleida, Spain, 25198
- Exelixis Clinical Site #95
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Madrid, Spain, 28007
- Exelixis Clinical Site #116
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Madrid, Spain, 28034
- Exelixis Clinical Site #72
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Madrid, Spain, 28041
- Exelixis Clinical Site #67
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Madrid, Spain, 28050
- Exelixis Clinical Site #79
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Valencia, Spain, 46014
- Exelixis Clinical Site #90
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Zaragoza, Spain, 50009
- Exelixis Clinical Site #121
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Guishan, Taiwan, 333
- Exelixis Clinical Site #119
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Kaohsiung City, Taiwan, 807
- Exelixis Clinical Site #85
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Kaohsiung City, Taiwan, 833
- Exelixis Clinical Site #107
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Liuying, Taiwan, 73657
- Exelixis Clinical Site #118
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Taichung, Taiwan, 40447
- Exelixis Clinical Site #73
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Tainan, Taiwan, 704
- Exelixis Clinical Site #101
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Chiang Mai, Thailand, 50200
- Exelixis Clinical Site #62
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Hat Yai, Thailand, 90110
- Exelixis Clinical Site #92
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Birmingham, United Kingdom, B95SS
- Exelixis Clinical Site #110
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Edinburgh, United Kingdom, EH42XU
- Exelixis Clinical Site #111
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London, United Kingdom, EC1A 7BE
- Exelixis Clinical Site #123
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London, United Kingdom, W1G 6AD
- Exelixis Clinical Site #114
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Romford, United Kingdom, RM70AG
- Exelixis Clinical Site #115
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Sutton, United Kingdom, SM2 5PT
- Exelixis Clinical Site #126
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England
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Bristol, England, United Kingdom, BS2 8ED
- Exelixis Clinical Site #130
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Alabama
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Jonesboro, Alabama, United States, 72401
- Exelixis Clinical Site #65
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Arizona
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Phoenix, Arizona, United States, 85004
- Exelixis Clinical Site #30
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Tucson, Arizona, United States, 85719
- Exelixis Clinical Site #70
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California
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Duarte, California, United States, 91010
- Exelixis Clinical Site #9
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La Jolla, California, United States, 92037
- Exelixis Clinical Site #55
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Los Angeles, California, United States, 90095
- Exelixis Clinical Site #77
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Orange, California, United States, 92868
- Exelixis Clinical Site #105
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Santa Monica, California, United States, 90404
- Exelixis Clinical Site #80
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Santa Rosa, California, United States, 95403
- Exelixis Clinical Site #5
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Sylmar, California, United States, 91342
- Exelixis Clinical Site #82
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Torrance, California, United States, 90505
- Exelixis Clinical Site #58
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Whittier, California, United States, 90602
- Exelixis Clinical Site #81
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Connecticut
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New Haven, Connecticut, United States, 06510
- Exelixis Clinical Site #125
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Florida
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Miami Beach, Florida, United States, 33140
- Exelixis Clinical Site #16
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Orlando, Florida, United States, 32804
- Exelixis Clinical Site #60
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Georgia
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Marietta, Georgia, United States, 30060
- Exelixis Clinical Site #4
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Illinois
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Joliet, Illinois, United States, 60435
- Exelixis Clinical Site #3
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Indiana
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Indianapolis, Indiana, United States, 46250
- Exelixis Clinical Site #102
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Kansas
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Westwood, Kansas, United States, 66205
- Exelixis Clinical Site #10
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Kentucky
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Lexington, Kentucky, United States, 40536
- Exelixis Clinical Site #47
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Louisiana
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New Orleans, Louisiana, United States, 70112
- Exelixis Clinical Site #7
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Missouri
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St Louis, Missouri, United States, 63141
- Exelixis Clinical Site #22
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Montana
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Billings, Montana, United States, 59102
- Exelixis Clinical Site #8
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Nebraska
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Omaha, Nebraska, United States, 68130
- Exelixis Clinical Site #1
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New Mexico
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Albuquerque, New Mexico, United States, 87131
- Exelixis Clinical Site #15
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New York
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New York, New York, United States, 10016
- Exelixis Clinical Site #11
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New York, New York, United States, 10029
- Exelixis Clinical Site #59
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The Bronx, New York, United States, 10461
- Exelixis Clinical Site #17
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North Carolina
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Charlotte, North Carolina, United States, 28204
- Exelixis Clinical Site #74
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Ohio
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Cincinnati, Ohio, United States, 45219
- Exelixis Clinical Site #6
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Oklahoma
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Oklahoma City, Oklahoma, United States, 73142
- Exelixis Clinical Site #12
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Oregon
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Portland, Oregon, United States, 97210
- Exelixis Clinical Site #75
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Pennsylvania
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Philadelphia, Pennsylvania, United States, 19107
- Exelixis Clinical Site #106
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Pittsburgh, Pennsylvania, United States, 15212
- Exelixis Clinical Site #18
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Pittsburgh, Pennsylvania, United States, 15232
- Exelixis Clinical Site #103
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South Carolina
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Greenville, South Carolina, United States, 29607
- Exelixis Clinical Site #24
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Tennessee
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Chattanooga, Tennessee, United States, 37404
- Exelixis Clinical Site #56
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Nashville, Tennessee, United States, 37203
- Exelixis Clinical Site #76
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Nashville, Tennessee, United States, 37232
- Exelixis Clinical Site #133
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Virginia
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Fairfax, Virginia, United States, 22031
- Exelixis Clinical Site #450
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Roanoke, Virginia, United States, 24014
- Exelixis Clinical Site #14
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Washington
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Seattle, Washington, United States, 98101
- Exelixis Clinical Site #13
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Seattle, Washington, United States, 98104
- Exelixis Clinical Site #32
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Seattle, Washington, United States, 98109
- Exelixis Clinical Site #89
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Spokane, Washington, United States, 99208
- Exelixis Clinical Site #2
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Participation Criteria
Eligibility Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Description
Key Inclusion Criteria:
Participants with histologically or cytologically confirmed adenocarcinoma of the colon or rectum.
- Documented rat sarcoma (RAS) status (mutant or wild-type [WT]), by tissue-based analysis.
- Documented NOT to have microsatellite instability-high (MSI-high) or mismatch repair deficient (dMMR) CRC by tissue-based analysis.
Has received SOC anticancer therapies as prior therapy for metastatic CRC and has radiographically progressed, is refractory or intolerant to these therapies.
- Systemic SOC anticancer therapy if approved and available in the country where the participant is randomized.
- Radiographic progression during treatment with or within 4 months following the last dose of the most recent approved SOC chemotherapy regimen.
- Measurable disease according to Response Evaluation Criteria in Solid Tumors (RECIST) v1.1 as determined by the Investigator.
- Available archival tumor biopsy material. If archival tissue is unavailable, must provide fresh tumor tissue biopsy prior to randomization.
- Recovery to baseline or ≤ Grade 1 severity (common terminology criteria for adverse events [CTCAE] version 5) from adverse events (AEs) related to any prior treatments, unless AE(s) are clinically nonsignificant and/or stable on supportive therapy.
- Eastern Cooperative Oncology Group (ECOG) performance status of 0-1.
- Adequate organ and marrow function.
- Fertile participants and their partners must agree to use highly effective methods of contraception during the course of the study and after the last dose of treatment.
- Females of childbearing potential must not be pregnant at screening.
Key Exclusion Criteria:
- Prior treatment with XL092, regorafenib, trifluridine/tipiracil, or programmed cell death protein-1/and its ligand (PD-L1/PD-1) targeting immune checkpoint inhibitors (ICIs).
- Receipt of a small molecule kinase inhibitor (including investigational agents) within 2 weeks before randomization.
- Receipt of any type of anticancer antibody therapy, systemic chemotherapy, or hormonal anti-cancer therapy within 3 weeks (or bevacizumab within 4 weeks) before randomization.
- Radiation therapy for bone metastasis within 2 weeks, any other radiation therapy within 4 weeks before randomization.
- Known brain metastases or cranial epidural disease unless adequately treated with radiotherapy and/or surgery (including radiosurgery) and stable for at least 4 weeks before randomization.
- Has uncontrolled, significant intercurrent or recent illness.
- Major surgery (example, gastrointestinal (GI) surgery, removal or biopsy of brain metastasis) within 4 weeks prior to randomization.
- Systemic treatment with, or any condition requiring, either corticosteroids (> 10 mg daily prednisone equivalent) or other immunosuppressive medications within 14 days prior to randomization.
- Corrected QT interval calculated by the Fridericia formula (QTcF) > 460 milliseconds (ms) within 10 days before randomization.
- History of psychiatric illness likely to interfere with ability to comply with protocol requirements or give informed consent.
- Pregnant or lactating females.
- Inability to swallow study treatment formulation, inability to receive IV administration, or presence of GI condition that might affect the absorption of study drug.
- Previously identified allergy or hypersensitivity to components of the study treatment formulations.
- Any other active malignancy or diagnosis of another malignancy within 2 years before randomization. Exceptions are noted in the protocol.
- Administration of a live, attenuated vaccine within 30 days before randomization.
Note: Other protocol defined Inclusion/Exclusion criteria may apply.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: None (Open Label)
Number of Arms
Arms and Interventions
Participant Group / ArmParticipant Group / Arm |
Intervention / TreatmentIntervention / Treatment |
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Experimental: XL092 + Atezolizumab
Participants with mCRC will receive XL092 + atezolizumab.
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Supplied as tablets; administered orally daily.
Supplied as 1200 milligrams (mg)/20 milliliter (mL) vials; administered as a 1200 mg intravenous (IV) infusion once in a 3-week cycle (q3w).
Other Names:
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Active Comparator: Regorafenib
Participants with mCRC will receive active comparator of regorafenib.
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Supplied as 40 mg tablets; administered orally daily at 160 mg for the first 21 days of each 28-day cycle.
Other Names:
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What is the study measuring?
Primary Outcome Measures
Primary Outcome Measures
Outcome Measure |
Time Frame |
|---|---|
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Overall Survival (OS) of XL092 + Atezolizumab Versus Regorafenib in All Randomized Participants
Time Frame: Up to 32 months
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Up to 32 months
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Overall Survival (OS) of XL092 + Atezolizumab Versus Regorafenib in Randomized Non-Liver Metastases (NLM) Participants
Time Frame: Up to 32 months
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Up to 32 months
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Secondary Outcome Measures
Secondary Outcome Measures
Outcome Measure |
Time Frame |
|---|---|
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Progression-Free Survival (PFS) as Assessed by the Investigator
Time Frame: Up to 26 months
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Up to 26 months
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Duration of Response (DOR) as Assessed by the Investigator
Time Frame: Up to 36 months
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Up to 36 months
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Objective Response Rate (ORR) as Assessed by the Investigator
Time Frame: Up to 36 months
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Up to 36 months
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Number of Participants with Treatment Emergent Adverse Events (TEAEs)
Time Frame: Up to 36 months
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Up to 36 months
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Maximum Observed Plasma Drug Concentration (Cmax) of XL092
Time Frame: Predose up to 72 hours postdose
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Predose up to 72 hours postdose
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Time to Maximum Observed Plasma Drug Concentration (Tmax) of XL092
Time Frame: Predose up to 72 hours postdose
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Predose up to 72 hours postdose
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Number of Participants who Develop Antidrug Antibodies (ADA) Against Atezolizumab
Time Frame: Up to 36 months
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Up to 36 months
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Other Outcome Measures
Other Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
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Progression-Free Survival (PFS) as assessed by the Investigator per RECIST 1.1
Time Frame: Approximately 26 months after the first subject is randomized.
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Defined as the time randomization to the earlier of either radiographic progressive disease (PD) as assessed by the Investigator per RECIST 1.1 or death from any cause.
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Approximately 26 months after the first subject is randomized.
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Objective Response Rate (ORR) as assessed by the Investigator per RECIST 1.1
Time Frame: Up to 36 months after the first subject is randomized.
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Defined as the proportion of subjects experiencing a confirmed complete response (CR) or confirmed partial response (PR) as assessed by the Investigator per RECIST 1.1 criteria.
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Up to 36 months after the first subject is randomized.
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Duration of Response (DOR) as assessed by the Investigator per RECIST 1.1
Time Frame: Up to 36 months after the first subject is randomized.
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Defined as the time from the first documentation of objective response (subsequently confirmed at a visit ≥ 28 days later) to either radiographic disease progression or death due to any cause.
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Up to 36 months after the first subject is randomized.
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Collaborators and Investigators
Sponsor
Sponsor
Investigators
Investigators
- Study Director: Medical Director, Exelixis
Publications and helpful links
General Publications
- Saeed A, Tabernero J, Parikh A, Van den Eynde M, Karthaus M, Gerlinger M, Wang Z, Wang G, Smith R, Hecht JR. STELLAR-303: randomized phase III study of zanzalintinib + atezolizumab in previously treated metastatic colorectal cancer. Future Oncol. 2024;20(24):1733-1743. doi: 10.1080/14796694.2024.2352276. Epub 2024 Jul 23.
- Hecht JR, Park YS, Tabernero J, Lee MA, Lee S, Virgili AC, Van den Eynde M, Fontana E, Fakih M, Asghari G, So J, Stein A, Dubreuil O, Bodnar L, He CS, Wang G, Smith R, Eng C, Saeed A; STELLAR-303 study investigators. Zanzalintinib plus atezolizumab versus regorafenib in refractory colorectal cancer (STELLAR-303): a randomised, open-label, phase 3 trial. Lancet. 2025 Nov 15;406(10517):2360-2370. doi: 10.1016/S0140-6736(25)02025-2. Epub 2025 Oct 20.
Study record dates
Study Major Dates
Study Start (Actual)
Study Start
Primary Completion (Actual)
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 (Actual)
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
Keywords
Additional Relevant MeSH Terms
- Neoplasms by Site
- Neoplasms
- Intestinal Diseases
- Gastrointestinal Neoplasms
- Digestive System Neoplasms
- Digestive System Diseases
- Gastrointestinal Diseases
- Intestinal Neoplasms
- Rectal Diseases
- Colonic Diseases
- Colorectal Neoplasms
- Molecular Mechanisms of Pharmacological Action
- Antineoplastic Agents
- Antineoplastic Agents, Immunological
- Immune Checkpoint Inhibitors
- atezolizumab
- regorafenib
Other Study ID Numbers
Other Study ID Numbers
- XL092-303
- 2021-003243-21 (EudraCT Number)
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
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