A Phase III, Randomised, Open-Label, Multicentre Study of Datopotamab Deruxtecan or Docetaxel in Previously Treated TROP2-positive Advanced or Metastatic Non-squamous Non-Small Cell Lung Cancer Without Actionable Genomic Alterations (TROPION-Lung17)

Inclusion Criteria: * Pathologically documented Stage IIIB, IIIC, or Stage IV non-squamous non-small cell lung cancer (NSCLC) without actionable genomic alterations (AGA) at the time of randomisation and meets the criteria for NSCLC: * Participants must have documented negative test results for epidermal growth factor receptor (EGFR), anaplastic lymphoma kinase (ALK), and ROS proto-oncogene 1 (ROS1) genomic alterations. * Has no known tumour genomic alterations in neurotrophic tyrosine receptor kinase (NTRK), proto-oncogene B-raf (BRAF), rearranged during transfection (RET), mesenchymal-epithelial transition (MET) exon 14 skipping, Kirsten rat sarcoma viral oncogene homolog (KRAS) G12C, human epidermal growth factor receptor 2 (HER2) or any other actionable driver oncogenes for which there are locally approved and available targeted first-line therapies. * Prospectively assessed trophoblast cell surface protein 2 (TROP2) normalised membrane ratio (NMR) positive. * Documentation of radiographic disease progression while on or after receiving the most recent treatment regimen for advanced or metastatic NSCLC. * Participants must have received platinum based chemotherapy (PBC) in combination with anti-programmed death-protein 1 (anti-PD-1)/anti-programmed death-ligand 1 (anti-PD-L1) monoclonal antibody (mAb) as the only prior line of therapy or received PBC and anti-PD-1/anti-PD-L1 monoclonal antibody (in either order) sequentially as the only 2 prior lines of therapy. * Provision of acceptable formalin fixed and paraffin embedded (FFPE) tumour sample for assessment of TROP2. * At least one lesion not previously irradiated that qualifies as a Response Evaluation Criteria in Solid Tumours, Version 1.1 (RECIST 1.1) target lesion (TL) at baseline and can be accurately measured at baseline as ≥ 10 mm in the longest diameter (except lymph nodes, which must have short axis ≥ 15 mm) with computed tomography (CT) or magnetic resonance imaging (MRI) and is suitable for accurate repeated measurements. * Eastern Cooperative Oncology Group (ECOG) Performance Status (PS) of 0 or 1. * Adequate bone marrow reserve and organ function within 7 days before randomisation. Exclusion Criteria: * Squamous, mixed NSCLC, or small cell lung cancer (SCLC) histology. * NSCLC disease that is eligible for definitive local therapy alone. * History of another primary malignancy other than NSCLC, except for malignancy treated with curative intent with no known active disease within 3 years before randomisation and of low potential risk for recurrence. * Spinal cord compression or brain metastases, unless asymptomatic, stable, and not requiring treatment with corticosteroids or anticonvulsants for at least 7 days prior to randomisation. * Clinically significant corneal disease. * Has active or uncontrolled hepatitis B or C virus infection. * Known human immunodeficiency virus (HIV) infection that is not well controlled. * Uncontrolled infection requiring intravenous (IV) antibiotics, antivirals, or antifungals. * History of non-infectious interstitial lung disease (ILD)/pneumonitis including radiation pneumonitis that required steroids, has current ILD/pneumonitis, or has suspected ILD/pneumonitis that cannot be ruled out by imaging at screening. * Severe pulmonary function compromise per Investigator discretion.