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Completed

NCT Number: NCT04513925

A Study of Atezolizumab and Tiragolumab Compared With Durvalumab in Participants With Locally Advanced, Unresectable Stage III Non-Small Cell Lung Cancer (NSCLC)

The purpose of this study is to evaluate the efficacy and safety of atezolizumab in combination with tiragolumab compared with durvalumab in participants with locally advanced, unresectable Stage III non-small cell lung cancer (NSCLC) who have received at least two cycles of concurrent platinum-based chemoradiotherapy (CRT) and have not had radiographic disease progression.

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Key information

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 3

Primary location

CEMIC, Buenos Aires, Argentina

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Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Eastern Cooperative Oncology Group (ECOG) Performance Status of 0 or 1
  • Histologically or cytologically documented NSCLC with locally advanced, unresectable Stage III NSCLC of either squamous or non-squamous histology
  • Whole-body Positron Emission Tomography-Computed Tomography (PET-CT) scan, performed prior and within 42 days of the first dose of concurrent chemoradiotherapy (cCRT)
  • At least two prior cycles of platinum-based chemotherapy administered concurrently with radiotherapy (RT), which must be completed within 1 to 42 days prior to randomization in the study (one cycle of cCRT is defined as 21 or 28 days)
  • The radiotherapy (RT) component in the cCRT must have been at a total dose of radiation of 60 (±10 percent [%]) gray (Gy) (54 Gy to 66 Gy) administered by intensity modulated RT (preferred) or 3D-conforming technique
  • No progression during or following concurrent platinum-based CRT
  • A known PD-L1 result
  • Life expectancy >/= 12 weeks
  • Adequate hematologic and end-organ function
  • Female participants must be willing to avoid pregnancy for 90 days after the final dose of tiragolumab and 5 months after the final dose of atezolizumab, or for 3 months after the final dose of durvalumab
  • Male participants must remain abstinent or use a condom during the treatment period and for 90 days after the final dose of tiragolumab
  • Male participants must not donate sperm during the treatment period and for 90 days after the final dose of tiragolumab

Exclusion criteria

  • Any history of prior NSCLC and/or any history of prior treatment for NSCLC (participants must be newly diagnosed with unresectable Stage III disease)
  • NSCLC known to have a mutation in the epidermal growth factor receptor (EGFR) gene or an anaplastic lymphoma kinase (ALK) fusion oncogene
  • Any evidence of Stage IV disease
  • Treatment with sequential CRT for locally advanced NSCLC
  • Participants with locally advanced NSCLC who have progressed during or after the definitive cCRT prior to randomization
  • Any Grade >2 unresolved toxicity from previous CRT
  • Grade >= 2 pneumonitis from prior CRT
  • Active or history of autoimmune disease or immune deficiency
  • History of idiopathic pulmonary fibrosis, organizing pneumonia, drug-induced pneumonitis, or idiopathic pneumonitis or evidence of active pneumonitis
  • History of malignancy other than NSCLC within 5 years prior to screening with the exception of malignancies with a negligible risk of metastasis or death
  • Prior allogeneic stem cell or solid organ transplantation
  • Active Epstein-Barr virus (EBV) infection or known or suspected chronic active EBV infection at screening
  • Treatment with investigational therapy within 28 days prior to initiation of study treatment
  • Prior treatment with CD137 agonists or immune checkpoint blockade therapies, including anti-cytotoxic T lymphocyte-associated protein 4, anti-T-cell immunoreceptor with Ig and ITIM domains (anti-TIGIT), anti-PD-1 and anti-PD-L1
  • Any prior Grade >/= 3 immune-mediated adverse event or any unresolved Grade > 1 immune-mediated adverse event while receiving any previous immunotherapy agent other than immune checkpoint blockade agents
  • Treatment with systemic immunosuppressive medication
  • Women who are pregnant, or breastfeeding

Treatment and study plan

Atezolizumab

Drug

Atezolizumab 1680 mg every 4 weeks (Q4W) will be administered IV on Day 1 of each 28-day cycle.

Other names: Tecentriq; RO5541267

Tiragolumab

Drug

Tiragolumab 840 mg Q4W will be administered IV on Day 1 of each 28-day cycle.

Other names: MTIG7192A; RO7092284

Durvalumab

Drug

Durvalumab will be administered based on weight at 10 mg/kg IV every 2 weeks (Q2W) on Days 1 and 15 of each 28-day cycle, or will be administered at a fixed dose of 1500 mg IV every 4 weeks (Q4W) (for participants whose weight >/= 30 kg) on Day 1 of each 28-day cycle.

Primary outcomes

  1. Progression-free Survival (PFS), as Assessed by an Independent Review Facility (IRF) in Programmed Death-ligand 1 (PD-L1) Positive Analysis Set (PPAS)

    Time frame: From randomization to first occurrence of PD or death from any cause, whichever occurred first (up to approximately 57 months)

    PFS was defined as the time from randomization to the first occurrence of PD, as determined by an IRF according to Response Evaluation Criteria in Solid Tumors, Version 1.1 (RECIST v1.1), or death from any cause, whichever occurred first. PD was defined as at least a 20% increase in the sum of diameters (SOD) of target lesions, taking as reference the smallest SOD at prior timepoints (including baseline). Additionally, the SOD must also demonstrate an absolute increase of ≥ 5 millimeters (mm) or unequivocal progression of existing non-target lesions. Kaplan-Meier (K-M) method was used to estimate median PFS.

  2. PFS, as Assessed by an IRF in FAS

    Time frame: From randomization to first occurrence of PD or death from any cause, whichever occurred first (up to approximately 57 months)

    PFS was defined as the time from randomization to the first occurrence of PD, as determined by an IRF according to RECIST v1.1, or death from any cause, whichever occurred first. PD was defined as at least a 20% increase in the SOD of target lesions, taking as reference the smallest SOD at prior timepoints (including baseline). Additionally, the SOD must also demonstrate an absolute increase of ≥ 5 mm or unequivocal progression of existing non-target lesions. K-M method was used to estimate median PFS.

Secondary outcomes

  1. Overall Survival (OS) in PPAS

    Time frame: From randomization to death from any cause (up to approximately 57 months)

    OS was defined as the time from randomization to death from any cause. K-M method was used to estimate median OS.

  2. PFS, as Assessed by the Investigator in PPAS

    Time frame: From randomization to first occurrence of PD or death from any cause, whichever occurred first (up to approximately 57 months)

    PFS was defined as the time from randomization to the first occurrence of PD, as determined by the investigator according to RECIST v1.1, or death from any cause, whichever occurred first. PD was defined as at least a 20% increase in the SOD of target lesions, taking as reference the smallest SOD at prior timepoints (including baseline). Additionally, the SOD must also demonstrate an absolute increase of ≥ 5 mm or unequivocal progression of existing non-target lesions. K-M method was used to estimate median PFS.

  3. Confirmed Objective Response Rate (ORR), as Assessed by an IRF in PPAS

    Time frame: Up to approximately 57 months

    ORR was defined as the percentage of participants who achieved an objective response (OR), characterized by a complete response (CR) or partial response (PR) on two consecutive occasions ≥ 4 weeks apart, as determined by an IRF according to RECIST v1.1. CR was defined as disappearance of all target and non-target lesion & normalization of tumor marker level. Additionally, any lymph nodes (whether target or non-target) must have a reduction in short axis to <10 mm. PR was defined as at least a 30% decrease in the SOD of all target lesions, taking as reference the baseline SOD, in the absence of CR. Percentages have been rounded off.

  4. Confirmed ORR, as Assessed by the Investigator in PPAS

    Time frame: Up to approximately 57 months

    ORR was defined as the percentage of participants who achieved an OR, characterized by CR or PR on two consecutive occasions ≥ 4 weeks apart, as determined by the investigator according to RECIST v1.1. CR was defined as disappearance of all target and non-target lesions & normalization of tumor marker level. Additionally, any lymph nodes (whether target or non-target) must have a reduction in short axis to < 10 mm. PR was defined as at least a 30% decrease in the SOD of all target lesions, taking as reference the baseline SOD, in the absence of CR. Percentages have been rounded off.

  5. Duration of Response (DOR), as Assessed by an IRF in PPAS

    Time frame: From first occurrence of a confirmed OR until the first date of PD or death from any cause, whichever occurred first (up to approximately 57 months)

    DOR was defined as the time from the first occurrence of a confirmed OR, characterized by CR or PR, until the first date of PD, as determined by an IRF according to RECIST v1.1, or death from any cause, whichever occurred first. CR was defined as disappearance of all target and non-target lesions & normalization of tumor marker level. Additionally, any lymph nodes (whether target or non-target) must have a reduction in short axis to < 10 mm. PR was defined as at least a 30% decrease in the SOD of all target lesions, taking as reference the baseline SOD, in the absence of CR. PD was defined as at least a 20% increase in the SOD of target lesions, taking as reference the smallest SOD at prior timepoints (including baseline). Additionally, the SOD must also demonstrate an absolute increase of ≥ 5 mm or unequivocal progression of existing non-target lesions. Median DOR was estimated using the K-M method.

  6. DOR, as Assessed by the Investigator in PPAS

    Time frame: From first occurrence of a confirmed OR until the first date of PD or death from any cause, whichever occurred first (up to approximately 57 months)

    DOR was defined as the time from the first occurrence of a confirmed OR, characterized by CR or PR, until the first date of PD, as determined by the investigator according to RECIST v1.1, or death from any cause, whichever occurred first. CR was defined as disappearance of all target and non-target lesions, normalization of tumor marker level. Additionally, any lymph nodes (whether target or non-target) must have a reduction in short axis to < 10 mm. PR was defined as at least a 30% decrease in the SOD of all target lesions, taking as reference the baseline SOD, in the absence of CR. PD was defined as at least a 20% increase in the SOD of target lesions, taking as reference the smallest SOD at prior timepoints (including baseline). Additionally, the SOD must also demonstrate an absolute increase of ≥ 5 mm or unequivocal progression of existing non-target lesions. Median DOR was estimated using the K-M method.

  7. Time to Confirmed Deterioration (TTCD) in Cough, as Assessed Using European Organisation for Research and Treatment of Cancer Quality-of-life Questionnaire Lung Cancer Module (EORTC QLQ-LC13) in PPAS

    Time frame: Up to approximately 57 months

    TTCD=time from randomization until first confirmed clinically meaningful deterioration (CCMD) on each respective score. EORTC QLQ-LC13 is a lung cancer-specific instrument consisting of 13 questions: one multiple-item scale assessing dyspnoea (3 items), and 10 single items assessing cough, hemoptysis, sore mouth, dysphagia, peripheral neuropathy, alopecia, pain in chest, pain in arm or shoulder, pain in other parts, pain medication. Cough scored on a 4-point scale: 1=Not at all, 2=A little, 3=Quite a bit, 4=Very much. Scores were linearly transformed to score range of 0-100. High symptom score=high level of symptom severity. CCMD=increase from baseline (≥10 points) in a symptom score, held for at least two consecutive assessments or an initial clinically meaningful increase above baseline followed by death from any cause within 6 weeks. K-M method was used to estimate median TTCD.

  8. TTCD in Dyspnoea, as Assessed Using EORTC QLQ-LC13 in PPAS

    Time frame: Up to approximately 57 months

    TTCD=time from randomization until first CCMD on each respective score. EORTC QLQ-LC13 is a lung cancer-specific instrument consisting of 13 questions: one multiple-item scale assessing dyspnoea (3 items), and 10 single items assessing cough, hemoptysis, sore mouth, dysphagia, peripheral neuropathy, alopecia, pain in chest, pain in arm or shoulder, pain in other parts, pain medication. Dyspnoea was scored on a 4-point scale: 1=Not at all, 2=A little, 3=Quite a bit, 4=Very much. Scores were linearly transformed to score range of 0-100. High symptom score=high level of symptom severity. CCMD=increase from baseline (≥10 points) in a symptom score, held for at least two consecutive assessments or an initial clinically meaningful increase above baseline followed by death from any cause within 6 weeks. K-M method was used to estimate median TTCD.

  9. TTCD in Chest Pain, as Assessed Using EORTC QLQ-LC13 in PPAS

    Time frame: Up to approximately 57 months

    TTCD=time from randomization until first CCMD on each respective score. EORTC QLQ-LC13 is a lung cancer-specific instrument consisting of 13 questions: one multiple-item scale assessing dyspnoea (3 items), and 10 single items assessing cough, hemoptysis, sore mouth, dysphagia, peripheral neuropathy, alopecia, pain in chest, pain in arm or shoulder, pain in other parts, pain medication. Chest pain was scored on a 4-point scale: 1=Not at all, 2=A little, 3=Quite a bit, 4=Very much. Scores were linearly transformed to score range of 0-100. High symptom score=high level of symptom severity. CCMD=increase from baseline (≥10 points) in a symptom score, held for at least two consecutive assessments or an initial clinically meaningful increase above baseline followed by death from any cause within 6 weeks. K-M method was used to estimate median TTCD.

  10. TTCD in Global Health Status (GHS)/Quality-of-life (QoL), as Assessed Using European Organisation for Research and Treatment of Cancer Quality-of-life Core-30 (EORTC QLQ-C30) in PPAS

    Time frame: Up to approximately 57 months

    TTCD=time from randomization until first CCMD on each respective score. EORTC QLQ-C30 is cancer-specific instrument consisting of 30 questions to evaluate 5 aspects of participant functioning (physical, emotional, role, cognitive, & social), 3 symptom scales (fatigue, nausea, vomiting, & pain), GHS/QoL, & 6 single items (dyspnea, insomnia, appetite loss, constipation, diarrhea & financial difficulties). GHS/QoL questions were scored on 7-point scale with scores ranging from 1=Very poor to 7=Excellent. Scores were linearly transformed to a score range of 0-100. High score for GHS/QoL scale=better health-related quality-of-life (HRQoL). CCMD=decrease from baseline (≥10 points) in GHS/QoL scale score, held for at least 2 consecutive assessments/initial clinically meaningful decrease above baseline followed by death within 6 weeks. K-M method was used to estimate median TTCD.

  11. TTCD in Physical Functioning (PF), as Assessed Using EORTC QLQ-C30 in PPAS

    Time frame: Up to approximately 57 months

    TTCD=time from randomization until first CCMD on each respective score. EORTC QLQ-C30 is cancer-specific instrument consisting of 30 questions to evaluate 5 aspects of participant functioning (physical, emotional, role, cognitive, & social), 3 symptom scales (fatigue, nausea, vomiting, & pain), GHS/QoL, and 6 single items (dyspnea, insomnia, appetite loss, constipation, diarrhea & financial difficulties). PF was scored on a 4-point scale: 1=Not at all, 2=A little, 3=Quite a bit, 4=Very much. Scores were linearly transformed to a score range of 0-100. High score for PF=high/healthy level of functioning. CCMD=decrease from baseline (≥10 points) in PF score, held for at least 2 consecutive assessments or initial clinically meaningful decrease above baseline followed by death within 6 weeks. K-M method was used to estimate median TTCD.

  12. OS in FAS

    Time frame: From randomization to death from any cause (up to approximately 57 months)

    OS was defined as the time from randomization to death from any cause. K-M method was used to estimate median OS.

  13. PFS, as Assessed by the Investigator in FAS

    Time frame: From randomization to first occurrence of PD or death from any cause, whichever occurred first (up to approximately 57 months)

    PFS was defined as the time from randomization to the first occurrence of PD, as determined by the investigator according to RECIST v1.1, or death from any cause, whichever occurred first. PD was defined as at least a 20% increase in the SOD of target lesions, taking as reference the smallest SOD at prior timepoints (including baseline). Additionally, the SOD must also demonstrate an absolute increase of ≥ 5 mm or unequivocal progression of existing non-target lesions. K-M method was used to estimate median PFS.

  14. Confirmed ORR, as Assessed by an IRF in FAS

    Time frame: Up to approximately 57 months

    ORR was defined as the percentage of participants who achieved an OR, characterized by CR or PR on two consecutive occasions ≥ 4 weeks apart, as determined by an IRF according to RECIST v1.1. CR was defined as disappearance of all target and non-target lesions, normalization of tumor marker level. Additionally, any lymph nodes (whether target or non-target) must have a reduction in short axis to < 10 mm. PR was defined as at least a 30% decrease in the SOD of all target lesions, taking as reference the baseline SOD, in the absence of CR. Percentages have been rounded off.

  15. Confirmed ORR, as Assessed by the Investigator in FAS

    Time frame: Up to approximately 57 months

    ORR was defined as the percentage of participants who achieved an OR, characterized by a CR or PR on two consecutive occasions ≥ 4 weeks apart, as determined by the investigator according to RECIST v1.1. CR was defined as disappearance of all target and non-target lesions, normalization of tumor marker level. Additionally, any lymph nodes (whether target or non-target) must have a reduction in short axis to < 10 mm. PR was defined as at least a 30% decrease in the SOD of all target lesions, taking as reference the baseline SOD, in the absence of CR. Percentages have been rounded off.

  16. DOR, as Assessed by an IRF in FAS

    Time frame: From first occurrence of a confirmed OR until the first date of PD or death from any cause, whichever occurred first (up to approximately 57 months)

    DOR was defined as the time from the first occurrence of a confirmed OR, characterized by CR or PR, until the first date of PD, as determined by an IRF according to RECIST v1.1, or death from any cause, whichever occurred first. CR was defined as disappearance of all target and non-target lesions, normalization of tumor marker level. Additionally, any lymph nodes (whether target or non-target) must have a reduction in short axis to < 10 mm. PR was defined as at least a 30% decrease in the SOD of all target lesions, taking as reference the baseline SOD, in the absence of CR. PD was defined as at least a 20% increase in the SOD of target lesions, taking as reference the smallest SOD at prior timepoints (including baseline). Additionally, the SOD must also demonstrate an absolute increase of ≥ 5 mm or unequivocal progression of existing non-target lesions. Median DOR was estimated using the K-M method.

  17. DOR, as Assessed by the Investigator in FAS

    Time frame: From first occurrence of a confirmed OR until the first date of PD or death from any cause, whichever occurred first (up to approximately 57 months)

    DOR was defined as the time from the first occurrence of a confirmed OR, characterized by CR or PR, until the first date of PD, as determined by the investigator according to RECIST v1.1, or death from any cause, whichever occurred first. CR was defined as disappearance of all target and non-target lesions, normalization of tumor marker level. Additionally, any lymph nodes (whether target or non-target) must have a reduction in short axis to < 10 mm. PR was defined as at least a 30% decrease in the SOD of all target lesions, taking as reference the baseline SOD, in the absence of CR. PD was defined as at least a 20% increase in the SOD of target lesions, taking as reference the smallest SOD at prior timepoints (including baseline). Additionally, the SOD must also demonstrate an absolute increase of ≥ 5 mm or unequivocal progression of existing non-target lesions. Median DOR was estimated using the K-M method.

  18. TTCD in Cough, as Assessed Using EORTC QLQ-LC13 in FAS

    Time frame: Up to approximately 57 months

    TTCD=time from randomization until first CCMD on each respective score. EORTC QLQ-LC13 is a lung cancer-specific instrument consisting of 13 questions: one multiple-item scale assessing dyspnoea (3 items), and 10 single items assessing cough, hemoptysis, sore mouth, dysphagia, peripheral neuropathy, alopecia, pain in chest, pain in arm or shoulder, pain in other parts, pain medication. Cough was scored on a 4-point scale: 1=Not at all, 2=A little, 3=Quite a bit, 4=Very much. Scores were linearly transformed to score range of 0-100. High symptom score=high level of symptom severity. CCMD=increase from baseline (≥10 points) in a symptom score, held for at least two consecutive assessments or an initial clinically meaningful increase above baseline followed by death from any cause within 6 weeks. K-M method was used to estimate median TTCD.

  19. TTCD in Dyspnoea, as Assessed Using EORTC QLQ-LC13 in FAS

    Time frame: Up to approximately 57 months

    TTCD=time from randomization until first CCMD on each respective score. EORTC QLQ-LC13 is a lung cancer-specific instrument consisting of 13 questions: one multiple-item scale assessing dyspnoea (3 items), and 10 single items assessing cough, hemoptysis, sore mouth, dysphagia, peripheral neuropathy, alopecia, pain in chest, pain in arm or shoulder, pain in other parts, pain medication. Dyspnoea was scored on a 4-point scale: 1=Not at all, 2=A little, 3=Quite a bit, 4=Very much. Scores were linearly transformed to score range of 0-100. High symptom score=high level of symptom severity. CCMD=increase from baseline (≥10 points) in a symptom score, held for at least two consecutive assessments or an initial clinically meaningful increase above baseline followed by death from any cause within 6 weeks. K-M method was used to estimate median TTCD.

  20. TTCD in Chest Pain, as Assessed Using EORTC QLQ-LC13 in FAS

    Time frame: Up to approximately 57 months

    TTCD=time from randomization until first CCMD on each respective score. EORTC QLQ-LC13 is a lung cancer-specific instrument consisting of 13 questions: one multiple-item scale assessing dyspnoea (3 items), and 10 single items assessing cough, hemoptysis, sore mouth, dysphagia, peripheral neuropathy, alopecia, pain in chest, pain in arm or shoulder, pain in other parts, pain medication. Chest pain was scored on a 4-point scale: 1=Not at all, 2=A little, 3=Quite a bit, 4=Very much. Scores were linearly transformed to score range of 0-100. High symptom score=high level of symptom severity. CCMD=increase from baseline (≥10 points) in a symptom score, held for at least two consecutive assessments or an initial clinically meaningful increase above baseline followed by death from any cause within 6 weeks. K-M method was used to estimate median TTCD.

  21. TTCD in GHS/QoL, as Assessed Using EORTC QLQ-C30 in FAS

    Time frame: Up to approximately 57 months

    TTCD=time from randomization until first CCMD on each respective score. EORTC QLQ-C30 is cancer-specific instrument consisting of 30 questions to evaluate 5 aspects of participant functioning (physical, emotional, role, cognitive, & social), 3 symptom scales (fatigue, nausea, vomiting, & pain), GHS/QoL, and 6 single items (dyspnea, insomnia, appetite loss, constipation, diarrhea & financial difficulties). GHS/QoL questions were scored on 7-point scale with scores ranging from 1=Very poor to 7=Excellent. Scores were linearly transformed to a score range of 0-100. High score for GHS/QoL scale=better HRQoL. CCMD=decrease from baseline (≥10 points) in GHS/QoL scale score, held for at least 2 consecutive assessments or initial clinically meaningful decrease above baseline followed by death within 6 weeks. K-M method was used to estimate median TTCD.

  22. TTCD in PF, as Assessed Using EORTC QLQ-C30 in FAS

    Time frame: Up to approximately 57 months

    TTCD=time from randomization until first CCMD on each respective score. EORTC QLQ-C30 is cancer-specific instrument consisting of 30 questions to evaluate 5 aspects of participant functioning (physical, emotional, role, cognitive, & social), 3 symptom scales (fatigue, nausea, vomiting, & pain), GHS/QoL, and 6 single items (dyspnea, insomnia, appetite loss, constipation, diarrhea & financial difficulties). PF was scored on a 4-point scale: 1=Not at all, 2=A little, 3=Quite a bit, 4=Very much. Scores were linearly transformed to a score range of 0-100. High score for PF=high/healthy level of functioning. CCMD=decrease from baseline (≥10 points) in PF score, held for at least 2 consecutive assessments or initial clinically meaningful decrease above baseline followed by death within 6 weeks. K-M method was used to estimate median TTCD.

  23. PFS Rate at 12, 18, and 24 Months, as Assessed by an IRF in PPAS

    Time frame: At Months 12, 18, and 24

    PFS rate at 12, 18, and 24 months was defined as the percentage of participants who did not experience PD or death from any cause, as determined by an IRF, at 12, 18, and 24 months. PFS was defined as the time from randomization to the first occurrence of PD, as determined by an IRF according to RECIST v1.1, or death from any cause, whichever occurred first. PD was defined as at least a 20% increase in the SOD of target lesions, taking as reference the smallest SOD at prior timepoints (including baseline). Additionally, the SOD must also demonstrate an absolute increase of ≥ 5 mm or unequivocal progression of existing non-target lesions. K-M method was used to estimate median PFS rate. Percentages have been rounded off.

  24. PFS Rate at 12, 18, and 24 Months, as Assessed by the Investigator in PPAS

    Time frame: At Months 12, 18, and 24

    PFS rate at 12, 18, and 24 months was defined as the percentage of participants who did not experience PD or death from any cause, as determined by the investigator, at 12, 18, and 24 months. PFS was defined as the time from randomization to the first occurrence of PD, as determined by the investigator according to RECIST v1.1, or death from any cause, whichever occurred first. PD was defined as at least a 20% increase in the SOD of target lesions, taking as reference the smallest SOD at prior timepoints (including baseline). Additionally, the SOD must also demonstrate an absolute increase of ≥ 5 mm or unequivocal progression of existing non-target lesions. K-M method was used to estimate median PFS rate. Percentages have been rounded off.

  25. OS Rate at 12, 24, 36, and 48 Months in PPAS

    Time frame: At Months 12, 24, 36, and 48

    OS rate at months 12, 24, 36 and 48 was defined as percentage of participants who did not experience death from any cause at the specified timepoints. OS was defined as the time from randomization to death from any cause. K-M method was used to estimate OS rate. Percentages have been rounded off.

  26. Time-to-distant Metastasis (TTDM), as Assessed by the Investigator in PPAS

    Time frame: Up to approximately 57 months

    TTDM was defined as the time from the date of randomization until the date of first documented distant metastasis, as assessed by investigator according to RECIST v1.1, or death, whichever occurred first. Distant metastasis was defined as any new lesion that was outside of the radiation field. K-M method was used to estimate median TTDM.

  27. PFS Rate at 12, 18, and 24 Months, as Assessed by an IRF in FAS

    Time frame: At Months 12, 18, and 24

    PFS rate at 12, 18, and 24 months was defined as the percentage of participants who did not experience PD or death from any cause, as determined by an IRF, at 12, 18, and 24 months. PFS was defined as the time from randomization to the first occurrence of PD, as determined by an IRF according to RECIST v1.1, or death from any cause, whichever occurred first. PD was defined as at least a 20% increase in the SOD of target lesions, taking as reference the smallest SOD at prior timepoints (including baseline). Additionally, the SOD must also demonstrate an absolute increase of ≥ 5 mm or unequivocal progression of existing non-target lesions. K-M method was used to estimate PFS rate. Percentages have been rounded off.

  28. PFS Rate at 12, 18, and 24 Months, as Assessed by the Investigator in FAS

    Time frame: At Months 12, 18, and 24

    PFS rate at 12, 18, and 24 months was defined as the percentage of participants who did not experience PD or death from any cause, as determined by the investigator, at 12, 18, and 24 months. PFS was defined as the time from randomization to the first occurrence of PD, as determined by the investigator according to RECIST v1.1, or death from any cause, whichever occurred first. PD was defined as at least a 20% increase in the SOD of target lesions, taking as reference the smallest SOD at prior timepoints (including baseline). Additionally, the SOD must also demonstrate an absolute increase of ≥ 5 mm or unequivocal progression of existing non-target lesions. K-M method was used to estimate PFS rate. Percentages have been rounded off.

  29. OS Rate at 12, 24, 36, and 48 Months in FAS

    Time frame: At Months 12, 24, 36, and 48

    OS rate at months 12, 24, 36 and 48 was defined as percentage of participants who did not experience death from any cause at the specified timepoints. OS was defined as the time from randomization to death from any cause. K-M method was used to estimate OS rate. Percentages have been rounded off.

  30. TTDM, as Assessed by the Investigator in FAS

    Time frame: Up to approximately 57 months

    TTDM was defined as the time from the date of randomization until the date of first documented distant metastasis, as assessed by investigator according to RECIST v1.1, or death, whichever occurred first. Distant metastasis was defined as any new lesion that was outside of the radiation field. K-M method was used to estimate median TTDM.

  31. Number of Participants With Adverse Events (AEs)

    Time frame: Up to approximately 24.7 months

    An AE was defined as any untoward medical occurrence in a clinical investigation participant administered a pharmaceutical product, regardless of causal attribution. An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease temporally associated with the use of a medicinal product.

  32. Number of Participants With Cytokine Release Syndrome (CRS)

    Time frame: Up to approximately 24.7 months

    CRS=supraphysiologic response following administration of any immune therapy that results in activation/engagement of endogenous or infused T cells and/or other immune effector cells. Symptoms may be progressive, including fever at onset, and may also include hypotension, capillary leak (hypoxia), and end-organ dysfunction.

Sponsors and collaborators

Lead sponsor

Hoffmann-La Roche

Industry

Registry information

Official study title

A Phase III, Open-Label, Randomized Study of Atezolizumab and Tiragolumab Compared With Durvalumab in Patients With Locally Advanced, Unresectable Stage III Non-Small Cell Lung Cancer Who Have Not Progressed After Concurrent Platinum-Based Chemoradiation

Acronym: SKYSCRAPER-03

Important dates

Study start
2020
Primary completion
2025
Study completion
2025
First posted
Aug 14, 2020
Registry last updated
Jun 3, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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