PMID- 37976444 OWN - NLM STAT- MEDLINE DCOM- 20240129 LR - 20240201 IS - 1527-7755 (Electronic) IS - 0732-183X (Print) IS - 0732-183X (Linking) VI - 42 IP - 3 DP - 2024 Jan 20 TI - SKYSCRAPER-02: Tiragolumab in Combination With Atezolizumab Plus Chemotherapy in Untreated Extensive-Stage Small-Cell Lung Cancer. PG - 324-335 LID - 10.1200/JCO.23.01363 [doi] AB - PURPOSE: The phase III SKYSCRAPER-02 study determined whether the benefits of atezolizumab plus carboplatin and etoposide (CE) could be enhanced by the addition of tiragolumab in untreated extensive-stage small-cell lung cancer (ES-SCLC). We report final progression-free survival (PFS) and overall survival (OS) analyses. METHODS: Patients received tiragolumab 600 mg/placebo, plus atezolizumab 1,200 mg and CE (four cycles), then maintenance tiragolumab/placebo plus atezolizumab. Primary end points were investigator-assessed PFS and OS in patients without history/presence of brain metastases (primary analysis set [PAS]). Additional end points included PFS and OS in all patients regardless of brain metastases status (full analysis set [FAS]), response, and safety. RESULTS: Four hundred ninety patients were randomly assigned (FAS): 243 to tiragolumab arm and 247 to control arm. At the cutoff date (February 6, 2022; median duration of follow-up, 14.3 months [PAS] and 13.9 months [FAS]), final analysis of PFS in the PAS (n = 397) did not reach statistical significance (stratified hazard ratio [HR], 1.11; P = .3504; median, 5.4 months tiragolumab v 5.6 months control). At the cutoff date (September 6, 2022; median duration of follow-up, 21.2 months [FAS]), median OS in the PAS at final OS analysis was 13.1 months in both arms (stratified HR, 1.14; P = .2859). Median PFS and OS in the FAS were consistent with the PAS. The proportion of patients with immune-mediated adverse events (AEs) in the tiragolumab and control arms was 54.4% and 49.2%, respectively (grade 3/4: 7.9% and 7.7%). AEs leading to treatment withdrawal occurred in 8.4% and 9.3% of tiragolumab- and control-treated patients, respectively. CONCLUSION: Tiragolumab did not provide additional benefit over atezolizumab and CE in untreated ES-SCLC. The combination was well tolerated with no new safety signals. FAU - Rudin, Charles M AU - Rudin CM AUID- ORCID: 0000-0001-5204-3465 AD - Memorial Sloan Kettering Cancer Center, New York, NY. FAU - Liu, Stephen V AU - Liu SV AUID- ORCID: 0000-0002-4852-3914 AD - Georgetown University, Washington, DC. FAU - Soo, Ross A AU - Soo RA AUID- ORCID: 0000-0002-3053-3997 AD - National University Cancer Institute, Singapore, Singapore. FAU - Lu, Shun AU - Lu S AUID- ORCID: 0000-0001-8833-7262 AD - Shanghai Chest Hospital, School of Medicine, Shanghai JiaoTong University, Shanghai, China. FAU - Hong, Min Hee AU - Hong MH AUID- ORCID: 0000-0003-3490-2195 AD - Yonsei Cancer Center, Severance Hospital, Seoul, South Korea. FAU - Lee, Jong-Seok AU - Lee JS AD - Seoul National University Bundang Hospital, Seongnam, South Korea. FAU - Bryl, Maciej AU - Bryl M AD - Wielkopolskie Centrum Pulmonologii i Torakochirurgii w Poznaniu, Poznan, Poland. FAU - Dumoulin, Daphne W AU - Dumoulin DW AUID- ORCID: 0000-0001-5578-7902 AD - Erasmus MC, Rotterdam, the Netherlands. FAU - Rittmeyer, Achim AU - Rittmeyer A AUID- ORCID: 0000-0002-5280-6052 AD - Lungenfachklinik Immenhausen, Immenhausen, Germany. FAU - Chiu, Chao-Hua AU - Chiu CH AUID- ORCID: 0000-0001-8401-2356 AD - Taipei Veterans General Hospital, Taipei, Taiwan. AD - Taipei Medical University Hospital, Taipei, Taiwan. FAU - Ozyilkan, Ozgur AU - Ozyilkan O AD - Adana Baskent University Hospital, Ankara, Turkey. FAU - Johnson, Melissa AU - Johnson M AUID- ORCID: 0000-0001-9874-1314 AD - Sarah Cannon Research Institute/Tennessee Oncology, Nashville, TN. FAU - Navarro, Alejandro AU - Navarro A AD - Hospital Univ Vall d'Hebron, Barcelona, Spain. FAU - Novello, Silvia AU - Novello S AUID- ORCID: 0000-0001-7653-9748 AD - University of Turin, AOU San Luigi Orbassano (TO), Turin, Italy. FAU - Ozawa, Yuichi AU - Ozawa Y AUID- ORCID: 0000-0003-3798-3488 AD - Wakayama Medical University, Wakayama, Japan. AD - Hamamatsu Medical Center, Shizuoka, Japan. FAU - Tam, Sammi Hiu AU - Tam SH AD - Genentech Inc, South San Francisco, CA. FAU - Patil, Namrata S AU - Patil NS AUID- ORCID: 0000-0001-6156-684X AD - Genentech Inc, South San Francisco, CA. FAU - Wen, Xiaohui AU - Wen X AD - Genentech Inc, South San Francisco, CA. FAU - Huang, Meilin AU - Huang M AD - Genentech Inc, South San Francisco, CA. FAU - Hoang, Tien AU - Hoang T AD - Genentech Inc, South San Francisco, CA. FAU - Meng, Raymond AU - Meng R AD - Genentech Inc, South San Francisco, CA. FAU - Reck, Martin AU - Reck M AUID- ORCID: 0000-0002-5336-9739 AD - Airway Research Center North, German Center for Lung Research, LungenClinic, Grosshansdorf, Germany. LA - eng SI - ClinicalTrials.gov/NCT04256421 GR - P30 CA008748/CA/NCI NIH HHS/United States GR - R35 CA263816/CA/NCI NIH HHS/United States PT - Clinical Trial, Phase III PT - Journal Article PT - Randomized Controlled Trial DEP - 20231117 PL - United States TA - J Clin Oncol JT - Journal of clinical oncology : official journal of the American Society of Clinical Oncology JID - 8309333 RN - 0 (Antibodies, Monoclonal) RN - 52CMI0WC3Y (atezolizumab) RN - 6PLQ3CP4P3 (Etoposide) SB - IM MH - Humans MH - Antibodies, Monoclonal/therapeutic use MH - *Antineoplastic Combined Chemotherapy Protocols/adverse effects MH - Brain Neoplasms/drug therapy MH - Etoposide MH - *Lung Neoplasms/drug therapy/pathology MH - *Small Cell Lung Carcinoma/drug therapy PMC - PMC10824371 COIS- The following represents disclosure information provided by authors of this manuscript. All relationships are considered compensated unless otherwise noted. Relationships are self-held unless noted. I = Immediate Family Member, Inst = My Institution. Relationships may not relate to the subject matter of this manuscript. For more information about ASCO's conflict of interest policy, please refer to www.asco.org/rwc or ascopubs.org/jco/authors/author-center. Open Payments is a public database containing information reported by companies about payments made to US-licensed physicians (Open Payments). EDAT- 2023/11/17 18:42 MHDA- 2024/01/19 06:42 PMCR- 2023/11/17 CRDT- 2023/11/17 16:03 PHST- 2024/01/19 06:42 [medline] PHST- 2023/11/17 18:42 [pubmed] PHST- 2023/11/17 16:03 [entrez] PHST- 2023/11/17 00:00 [pmc-release] AID - JCO.23.01363 [pii] AID - 10.1200/JCO.23.01363 [doi] PST - ppublish SO - J Clin Oncol. 2024 Jan 20;42(3):324-335. doi: 10.1200/JCO.23.01363. Epub 2023 Nov 17.