| E.1 Medical condition or disease under investigation | 
| E.1.1 | Medical condition(s) being investigated | 
| Extensive Stage Small Cell Lung Cancer (ED SCLC) |  | 
| E.1.1.1 | Medical condition in easily understood language | 
| Extensive Stage Small Cell Lung Cancer (ED SCLC) |  | 
| E.1.1.2 | Therapeutic area | Diseases [C] - Cancer [C04] | 
| MedDRA Classification | 
| E.1.3 | Condition being studied is a rare disease | No | 
| E.2 Objective of the trial | 
| E.2.1 | Main objective of the trial | 
| The primary objective of the study is to evaluate if rovalpituzumab tesirine improves progression-free and overall survival in subjects with extensive-stage SCLC who have ongoing clinical benefit (SD, PR, or CR)  following the completion of 4 cycles of  first-line, platinum-based chemotherapy (cisplatin or carboplatin plus irinotecan or etoposide) compared to placebo. |  | 
| E.2.2 | Secondary objectives of the trial | 
| The secondary objectives of the study are to evaluate rovalpituzumab tesirine anti-tumor activity by determining objective response rate (ORR), clinical benefit rate (CBR), duration of response (DOR), and to assess change in patient reported outcomes (PRO) with EORTC QLC-C30/LC13 questionnaires. |  | 
| E.2.3 | Trial contains a sub-study | No | 
| E.3 | Principal inclusion criteria | 
| • Histologically or cytologically confirmed extensive-stage disease small cell lung cancer (ED SCLC) with ongoing clinical benefit (stable disease [SD], partial response [PR], or complete response [CR]) following completion of 4 cycles of first-line platinum-based therapy • At least 3 but no more than 9 weeks between the administration of the last cycle of platinum-based chemotherapy and randomization.
 • Participants with a history of central nervous system (CNS) metastases prior to the initiation of first-line platinum-based chemotherapy must have received definitive local treatment and have documentation of stable or improved CNS disease status
 • Eastern Cooperative Oncology Group (ECOG) performance score of 0 or 1
 • Participants must have adequate bone marrow, renal and hepatic function
 
 |  | 
| E.4 | Principal exclusion criteria | 
| • Any prior systemic chemotherapy, small molecule inhibitors, immune checkpoint inhibitors, other monoclonal antibodies, antibody-drug conjugates, radioimmunoconjugates, T-cell or other cell-based or biologic therapies, or any other anti-cancer therapy than that described in inclusion criteria • Any disease-directed radiotherapy (except prophylactic cranial irradiation) after last dose of first-line chemotherapy.
 • Prior exposure to a pyrrolobenzodiazepine (PBD)- or indolinobenzodiazepine-based drug, prior participation in a rovalpituzumab tesirine clinical trial, or known hypersensitivity or other contraindications to rovalpituzumab tesirine or excipient contained in the drug formulation.
 
 |  | 
| E.5 End points | 
| E.5.1 | Primary end point(s) | 
| Progression-free survival (PFS) determined by a Central Radiographic Assessment Committee (CRAC) and overall survival (OS). |  | 
| E.5.1.1 | Timepoint(s) of evaluation of this end point | 
| PFS - From randomization to disease progression, or death of any cause, whichever occurs first. OS - From randomization to death of any cause
 |  | 
| E.5.2 | Secondary end point(s) | 
| - Progression-free survival (PFS) based on investigator assessment - Objective response rate (ORR) per the CRAC and investigator assessment, respectively
 - Clinical benefit rate (CBR) per the CRAC and investigator assessment, respectively
 - Duration of response (DOR) per the CRAC and investigator assessment, respectively
 Response assessment will be based on RECIST v1.1.
 - Changes in patient reported outcomes (PROs) as measured by European Organization for Research and Treatment of Cancer (EORTC) Quality of Life Questionnaire (QLQ-C30) and Lung Cancer Module (QLQ-LC13)
 - Safety endpoints will be summarized using data from the Safety set.
 
 |  | 
| E.5.2.1 | Timepoint(s) of evaluation of this end point | 
| Disease progression will be defined as radiographic progression of disease by RECIST version 1.1. PFS, ORR, CBR, DOR - From randomization to disease progression, or death of any cause, whichever occurs first.
 Changes in PROs - From baseline (the assessment prior to first dose) to disease progression, or death of any cause, whichever occurs first.
 Safety endpoints - From baseline to specified time points throughout the study.
 
 |  | 
| E.6 and E.7 Scope of the trial | 
| E.6 | Scope of the trial | 
| E.6.1 | Diagnosis | No | 
| E.6.2 | Prophylaxis | No | 
| E.6.3 | Therapy | Yes | 
| E.6.4 | Safety | Yes | 
| E.6.5 | Efficacy | Yes | 
| E.6.6 | Pharmacokinetic | Yes | 
| E.6.7 | Pharmacodynamic | Yes | 
| E.6.8 | Bioequivalence | No | 
| E.6.9 | Dose response | No | 
| E.6.10 | Pharmacogenetic | Yes | 
| E.6.11 | Pharmacogenomic | No | 
| E.6.12 | Pharmacoeconomic | No | 
| E.6.13 | Others | Yes | 
| E.6.13.1 | Other scope of the trial description | 
| Quality of life Performance Status (ECOG)
 Healthcare Resource Utilization
 |  | 
| E.7 | Trial type and phase | 
| E.7.1 | Human pharmacology (Phase I) | No | 
| E.7.1.1 | First administration to humans | No | 
| E.7.1.2 | Bioequivalence study | No | 
| E.7.1.3 | Other | No | 
| E.7.1.3.1 | Other trial type description |  | 
| E.7.2 | Therapeutic exploratory (Phase II) | No | 
| E.7.3 | Therapeutic confirmatory (Phase III) | Yes | 
| E.7.4 | Therapeutic use (Phase IV) | No | 
| E.8 Design of the trial | 
| E.8.1 | Controlled | Yes | 
| E.8.1.1 | Randomised | Yes | 
| E.8.1.2 | Open | No | 
| E.8.1.3 | Single blind | No | 
| E.8.1.4 | Double blind | Yes | 
| E.8.1.5 | Parallel group | Yes | 
| E.8.1.6 | Cross over | No | 
| E.8.1.7 | Other | No | 
| E.8.2 | Comparator of controlled trial | 
| E.8.2.1 | Other medicinal product(s) | No | 
| E.8.2.2 | Placebo | Yes | 
| E.8.2.3 | Other | No | 
| E.8.2.4 | Number of treatment arms in the trial | 2 | 
| E.8.3 | The trial involves single site in the Member State concerned | No | 
| E.8.4 | The trial involves multiple sites in the Member State concerned | Yes | 
| E.8.4.1 | Number of sites anticipated in Member State concerned | 2 | 
| E.8.5 | The trial involves multiple Member States | Yes | 
| E.8.5.1 | Number of sites anticipated in the EEA | 115 | 
| E.8.6 Trial involving sites outside the EEA | 
| E.8.6.1 | Trial being conducted both within and outside the EEA | Yes | 
| E.8.6.2 | Trial being conducted completely outside of the EEA | No | 
| E.8.6.3 | If E.8.6.1 or E.8.6.2 are Yes, specify the regions in which trial sites are planned | 
| Australia |  
| Belarus |  
| Brazil |  
| Canada |  
| China |  
| Hong Kong |  
| Israel |  
| Japan |  
| Korea, Republic of |  
| Mexico |  
| Russian Federation |  
| Serbia |  
| South Africa |  
| Switzerland |  
| Taiwan |  
| Turkey |  
| Ukraine |  
| United States |  | 
| E.8.7 | Trial has a data monitoring committee | Yes | 
| E.8.8 | Definition of the end of the trial and justification where it is not the last
                        visit of the last subject undergoing the trial | 
| The end-of-study is defined as the date of last subject's last visit.  The sponsor may also end the study upon confirmation that the primary endpoint was statistically met. |  | 
| E.8.9 Initial estimate of the duration of the trial | 
| E.8.9.1 | In the Member State concerned years | 3 | 
| E.8.9.1 | In the Member State concerned months | 0 | 
| E.8.9.1 | In the Member State concerned days | 0 | 
| E.8.9.2 | In all countries concerned by the trial years | 3 | 
| E.8.9.2 | In all countries concerned by the trial months | 0 | 
| E.8.9.2 | In all countries concerned by the trial days | 0 |