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No longer recruiting (closed or complete)Last updated: 16 February 2026

SKYSCRAPER-01: This phase III trial is trying to understand how safe and effective it is to combine two types of immunotherapy to treat patients with non-small cell lung cancer that has spread to other parts of the bodyA Phase III, Randomized, Double-Blinded, Placebo-Controlled Study of Tiragolumab, an Anti-Tigit Antibody, in Combination With Atezolizumab Compared With Placebo in Combination With Atezolizumab in Patients With Previously Untreated Locally Advanced Unresectable or Metastatic PD-L1-Selected Non-Small Cell Lung Cancer

Trial purpose

Medical clipboardCancer treatment

Tumor type

Lung Cancers Lung cancer

Age

People18+

Trial acronym

SKYSCRAPER-01

Clinical summary

Summary

Eligible patients will be randomised to receive Atezolizumab followed by Tiragolumab OR a placebo-equivalent every three weeks on Day 1 of each 21-day cycle until disease progression, lack of clinical benefit or unacceptable toxicity is observed.

Conditions

This trial is treating people with non-small cell lung cancer

Eligibility

Inclusion

  • Eastern Cooperative Oncology Group (ECOG) Performance Status of 0 or 1
  • Histologically or cytologically documented locally advanced or recurrent NSCLC not eligible for curative surgery and/or definitive radiotherapy with or without chemoradiotherapy, or metastatic Stage IV non-squamous or squamous NSCLC
  • No prior systemic treatment for metastatic NSCLC
  • High tumor tissue PD-L1 expression
  • Measurable disease per Response Evaluation Criteria in Solid Tumors, Version 1.1 (RECIST v1.1)
  • Adequate hematologic and end-organ function
  • For participants enrolled in the extended China enrollment phase: current resident of mainland China or Taiwan and of Chinese ancestry.

Exclusion

  • Known mutation in the EGFR gene or an ALK fusion oncogene
  • Symptomatic, untreated, or actively progressing central nervous system metastases
  • 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
  • Malignancies other than NSCLC within 5 years, with the exception of those with a negligible risk of metastasis or death treated with expected curative outcome
  • Severe infection within 4 weeks prior to initiation of study treatment
  • Positive test result for human immunodeficiency virus (HIV)
  • Active hepatitis B or hepatitis C
  • Treatment with investigational therapy within 28 days prior to initiation of study treatment
  • Prior treatment with CD137 agonists or immune checkpoint blockade therapies, anti-CTLA-4, anti-TIGIT, anti-PD-1, and anti-PD-L1 therapeutic antibodies
  • Treatment with systemic immunostimulatory agents within 4 weeks or 5 drug elimination half-lives prior to initiation of study treatment.

Inclusion

  • Your cancer has spread to other parts of the body (metastatic) or has grown into nearby parts of the body (locally advanced).
  • You have been diagnosed with cancer, but have not received any treatment.

Exclusion

  • You are currently being treated on a clinical trial.
  • You have been diagnosed with a prior or secondary type of cancer.
  • You have certain types of non-cancer medical conditions.
  • You have had certain treatments, surgical procedures or drugs.
Message

Clinical trials have complex eligibility criteria, and other criteria may apply for this trial. Ask your doctor about whether this trial could be right for you.

Participating hospitals

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More information

Trial Identifiers

Information on this page is partially produced from ClinicalTrials.gov *. View further details about this trial on the registry via the links below:

Trial sponsor

Hoffmann-La Roche

Scientific Title

A Phase III, Randomized, Double-Blinded, Placebo-Controlled Study of Tiragolumab, an Anti-Tigit Antibody, in Combination With Atezolizumab Compared With Placebo in Combination With Atezolizumab in Patients With Previously Untreated Locally Advanced Unresectable or Metastatic PD-L1-Selected Non-Small Cell Lung Cancer

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