BL-M14D1 plus atezolizumab vs standard therapy in first-line extensive-stage small cell lung cancer
Official title: A Phase 3 Open-Label, Randomized Controlled Trial of BL-M14D1 and Atezolizumab vs. Standard-of-Care Therapy in Patients With First-Line Extensive-Stage Small Cell Lung Cancer
Run by SystImmune Inc. · NCT07625644 · Data updated 2026-11-12
A first-line treatment for adults with extensive-stage small cell lung cancer tests whether adding BL-M14D1 to atezolizumab and standard chemotherapy helps more than standard care.
Quick facts
| Phase | Phase 3 |
|---|---|
| Study type | Interventional |
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 550 (estimated) |
| Sponsor | SystImmune Inc. Industry-sponsored |
| Drugs / interventions | chemotherapy, Atezolizumab |
| Locations | 62 sites (Springdale, Arkansas and 61 other locations) |
| Status | Recruiting |
| Started | August 4, 2026 |
| Main results expected | January 2030 |
| Study ends | June 2031 |
| Registry record updated | October 15, 2026 |
| Trial ID | NCT07625644 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Adults with previously untreated extensive-stage SCLC who can receive platinum-based chemotherapy with an anti-PD-L1 inhibitor and have measurable disease.
✕Probably not a fit
Patients without measurable disease, poor performance status, or contraindications to the study drugs may not benefit.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This is a global Phase 3, open-label study comparing BL-M14D1 plus atezolizumab to the current standard-of-care therapy in adults with previously untreated extensive-stage SCLC. The control arm uses carboplatin, etoposide, and atezolizumab, followed by maintenance atezolizumab with or without lurbinectedin. Primary goals are to assess whether the BL-M14D1 combination improves outcomes and maintains safety. Eligible participants have confirmed ES-SCLC, good performance status, measurable disease, and adequate organ function. Key exclusions include prior platinum or etoposide for limited-stage disease and certain autoimmune or other active diseases.
Why it matters
Potential benefit: If successful, the combination could offer improved responses or longer survival for patients with ES-SCLC.
How similar studies have gone: Similar immunotherapy-chemotherapy combinations have shown benefit in first-line ES-SCLC, but this specific agent pair is being tested for potential added value.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Histologically or cytologically confirmed first-line (1L), extensive-stage (ES) small cell lung cancer (SCLC) * Must be eligible to receive a platinum-based chemotherapy regimen in combination with an anti-PD-L1 inhibitor. * At least one measurable lesion based on RECIST v1.1 per investigator assessment. * An Eastern Cooperative Oncology Group performance status (ECOG PS) of 0 to 1. * Adequate organ function Exclusion Criteria: * Received any kind of platinum or etoposide treatment for limited stage (LS) SCLC within 6 months prior to enrollment. * Participants who have received prior topoisomerase inhibitor-based ADC therapy. * Participants with history of severe heart disease * Participants with active autoimmune diseases and inflammatory diseases, * Participants with other prior or concurrent malignancies except for basal cell carcinoma of the skin, squamous cell carcinoma of the skin and/or carcinoma in situ after adequate resection, or other malignancy treated with curative intent with a disease-free interval of at least 3 years * Other protocol-defined inclusion/exclusion criteria apply.
Where it's running
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Highlands Oncology Group
Springdale, Arkansas, United States Recruiting -
OPN Healthcare
Glendale, California, United States Recruiting -
MemorialCare Todd Cancer Institute
Long Beach, California, United States Recruiting -
Valkyrie Clinical Trials
Los Angeles, California, United States Recruiting -
Total Health and Research Center
Miami, Florida, United States Recruiting -
Astera Cancer Care
East Brunswick, New Jersey, United States Recruiting
Show 44 more locations
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Virginia Cancer Specialists
Fairfax, Virginia, United States Recruiting -
Canberra Hospital
Garran, Australian Capital Territory, Australia Not yet recruiting -
Tasman Oncology
Southport, Queensland, Australia Not yet recruiting -
Flinders Medical Centre
Bedford Park, South Australia, Australia Not yet recruiting -
MHAT Dr. Tota Venkova
Gabrovo, Bulgaria Not yet recruiting -
MHAT Heart and Brain
Pleven, Bulgaria Not yet recruiting -
Medical Centre FutureMeds
Plovdiv, Bulgaria Not yet recruiting -
MHAT Pulmed
Plovdiv, Bulgaria Not yet recruiting -
UMHAT Sveti Ivan Rilski
Sofia, Bulgaria Not yet recruiting -
MHAT Serdikamed
Sofia, Bulgaria Not yet recruiting -
Arthur Child Cancer Centre
Calgary, Alberta, Canada Not yet recruiting -
University of Sherbrooke
Greenfield Park, Quebec, Canada Not yet recruiting -
Nemocnice České Budějovice, a.s.
České Budějovice, Czechia Not yet recruiting -
Nemocnice Agel Vítkovice
Ostrava, Czechia Not yet recruiting -
Fakultní nemocnice Ostrava (FN Ostrava)
Ostrava-Poruba, Czechia Not yet recruiting -
Organization Centre Hospitalier Intercommunal de Creteil (CHIC) - Centre de Recherche Clinique (CRC) (Clinical Research Center)
Créteil, France Not yet recruiting -
CLB - Centre Léon Bérard
Lyon, France Not yet recruiting -
IPC - lnstitut Paoli-Calmettes
Marseille, France Not yet recruiting -
Universite Pierre et Marie Curie (UPMC) - Center de Recherche des Cordeliers (CRC)
Paris, France Not yet recruiting -
ICO - L'Institut de Cancérologie de L'Ouest
Saint-Herblain, France Not yet recruiting -
LTD High Technology Hospital Medcenter
Tbilisi, Georgia Not yet recruiting -
Ltd New Hospitals
Tbilisi, Georgia Not yet recruiting -
Pineo Medical Ecosystem LtD
Tbilisi, Georgia Not yet recruiting -
LLC Todua Clinic
Tbilisi, Georgia Not yet recruiting -
The First Medical Clinic LLC
Tbilisi, Georgia Not yet recruiting -
Caucasus Medical Centre
Tbilisi, Georgia Not yet recruiting -
Lungenklinik/Lungenkrebszentrum Köln-Merheim
Cologne, Germany Not yet recruiting -
KEM | Evangelische Kliniken Essen Mitte gGmbH
Essen, Germany Not yet recruiting -
Krankenhaus Martha-Maria Halle-Dölau
Halle, Germany Not yet recruiting -
Henry Dunant Hospital Center
Athens, Greece Not yet recruiting -
Theageneio Anticancer Hospital
Thessaloniki, Greece Not yet recruiting -
St Luke's Hospital
Thessaloniki, Greece Not yet recruiting -
European Interbalkan Medical Center
Thessaloniki, Greece Not yet recruiting -
Semmelweis University Department of Pulmonology
Budapest, Hungary Not yet recruiting -
Mátrai Gyógyintézet
Gyöngyös, Hungary Not yet recruiting -
Bács-Kiskun Vármegyei Oktatókórház, Oncoradiology Center
Kecskemét, Hungary Not yet recruiting -
Református Pulmonológiai Intézet
Törökbálint, Hungary Not yet recruiting -
Centro di Riferimento Oncologico
Aviano, Italy Not yet recruiting -
Policlinico Paolo Giaccone University Hospital
Palermo, Italy Not yet recruiting -
Regina Elena Institute for Cancer Research
Roma, Italy Not yet recruiting -
Fondazione Policlinico Universitario A. Gemelli IRCCS
Roma, Italy Not yet recruiting -
AOUS Le Scotte, UOC Immunoterapia Oncologica
Siena, Italy Not yet recruiting -
Uniwersytecki Szpital Kliniczny w Bialymstoku, II Klinika Chorob Pluc, Raka Pluca i Chorob Wewnetrznych
Bialystok, Poland Not yet recruiting -
Szpitale Pomorskie Spolka z ograniczona odpowiedzialnoscia, Oddzial Onkologii i Radioterapii - Dzial Onkologii Klinicznej
Gdynia, Poland Not yet recruiting
+12 more sites. See ClinicalTrials.gov for the full list.
Study contacts
- Study coordinator: Loren VanPelt
- Email: loren.vanpelt@systimmune.com
- Phone: 425-453-6841
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.