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Downstaging and RATS After Neo-Chemo-IO: Impact on Surgical Outcomes in NSCLC

The Impact of Downstaging on Robotic Surgical Outcomes After Neoadjuvant Chemo-Immunotherapy in Non-Small Cell Lung Cancer

Status
Recruiting
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT07528066
Acronym
DRAGON-NSCLC
Enrollment
200
Registered
2026-04-14
Start date
2026-03-02
Completion date
2027-03-30
Last updated
2026-04-14

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Neoadjuvant Chemoimmunotherapy, Robotic Pulmonary Resection, Stage IIB-III NSCLC

Keywords

stage IIB-III NSCLC, neoadjuvant chemo-immunotherapy, robotic-assisted surgery, perioperative outcomes

Brief summary

The goal of this observational study is to learn whether tumor and nodal downstaging after neoadjuvant chemo-immunotherapy is associated with better surgical outcomes in patients with clinical stage IIB-III non-small cell lung cancer (NSCLC) undergoing robotic-assisted thoracic surgery. The main question it aims to answer is: Is downstaging after neoadjuvant chemo-immunotherapy associated with better surgical outcomes in patients with stage IIB-III NSCLC undergoing robotic-assisted surgery? Participants with resectable or potentially resectable stage IIB-III NSCLC who receive neoadjuvant chemo-immunotherapy as part of their routine clinical care and then undergo curative-intent robotic-assisted surgery will be prospectively enrolled from international centers. Clinical, operative, pathological, and postoperative outcome data will be collected, including R0 resection, the extent of resection, conversion to open surgery, postoperative complications, length of stay, readmission, and mortality.

Detailed description

Please check all details of this study in Clinicaltrials.gov

Interventions

PROCEDURERobotic-assisted surgery (RATS)

Robotic pulmonary surgery for patients with neoadjuvant chemo-immunotherapy for stage IIB-III non-small cell lung cancer

Sponsors

Shanghai Chest Hospital
Lead SponsorOTHER
The Affiliated Hospital of Qingdao University
CollaboratorOTHER
Fujian Medical University Union Hospital
CollaboratorOTHER
Guangdong Provincial People's Hospital
CollaboratorOTHER
Tianjin Medical University Cancer Institute and Hospital
CollaboratorOTHER
Jiangsu Cancer Institute & Hospital
CollaboratorOTHER
Shenzhen People's Hospital
CollaboratorOTHER
Hopital Saint Joseph Marseille
CollaboratorUNKNOWN
University Hospital, Rouen
CollaboratorOTHER
Azienda Ospedaliera Cosenza
CollaboratorOTHER

Study design

Observational model
COHORT
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Healthy volunteers
No

Inclusion criteria

* Age ≥18 years * Histologically confirmed NSCLC * AJCC 9th clinical stage IIB-III, M0, deemed resectable or potentially resectable by the multidisciplinary tumour discussion (MDT) * Planned neoadjuvant chemo-immunotherapy (PD-1/PD-L1 inhibitor + platinum doublet; additional neoadjuvant RT is allowed) with curative-intent surgery * Received ≥1 cycle of chemo-IO (capture the intended 2-4 cycles) * Baseline chest CT±PET-CT within 6 weeks before starting neoadjuvant therapy * Restaging 2-6 weeks after last neoadjuvant dose with chest CT±PET-CT * Curative-intent resection planned; surgery performed 2-10 weeks after last dose * Performing systematic nodal dissection * ECOG performance status 0-2. * Complete 90-day postoperative follow-up * Ability to provide informed consent

Exclusion criteria

* Metastatic disease (M1) at baseline or on restaging * No immunotherapy component in the neoadjuvant regimen (unless enrolled in a prespecified comparator cohort; otherwise exclude from primary analysis) * Prior systemic therapy or thoracic radiotherapy for the current lung cancer before starting neoadjuvant chemo-IO * Planned neoadjuvant chemoradiation (exclude unless including immunotherapy) * Definitive decision against surgery before starting neoadjuvant therapy * Active autoimmune disease requiring systemic immunosuppression within 2 years, prior organ transplant, or history of grade ≥2 pneumonitis/ILD * Uncontrolled infection, pregnancy/lactation, or any condition precluding curative-intent resection per MDT

Design outcomes

Primary

MeasureTime frameDescription
Complete resection (R0 resection)From enrollment to the end of surgical treatment at 4 weeksR0 resection (complete resection) was defined according to the International Association for the Study of Lung Cancer (IASLC) criteria as: (1) microscopically negative resection margins; (2) systematic nodal dissection including at least 6 lymph node stations (3 N1 and 3 N2, including station 7); (3) no extracapsular nodal extension; and (4) the highest mediastinal lymph node removed being negative.

Secondary

MeasureTime frameDescription
Length of stay (LOS)From enrollment to the end of the whole treatment in the index hospitalizationLength of stay is defined as the total number of nights from surgery to hospital discharge, calculated as the interval between the date of surgery and the date of discharge.
Major postoperative complicationsFrom enrollment to the end of the whole treatment at 3 monthsMajor postoperative complications were defined as any complication graded as Grade III or higher according to the Clavien-Dindo classification.
Conversion to openFrom enrollment to the end of surgical treatmentConversion to open was defined as the intraoperative switch from a robotic-assisted procedure to an open surgical procedure.
Extended proceduresFrom enrollment to the end of surgical treatmentExtended procedures refer to additional or more extensive resections/reconstructions performed beyond standard lobectomy, including but not limited to bronchial sleeve resection, vascular angioplasty, pneumonectomy, chest wall resection, and other combined procedures.
30- and 90-day readmission ratesFrom enrollment to the end of treatment at 3 months30- and 90-day readmission rates were defined as the proportion of patients who were readmitted to any hospital within 30 days and 90 days after the initial discharge, respectively.
30- and 90-day mortalityFrom enrollment to the end of treatment at 3 months30- and 90-day mortality was defined as all-cause death occurring within 30 days and 90 days after the date of surgery, respectively.

Countries

China, France, Italy

Contacts

CONTACTZhigang Li, MD, PhD
zhigang.li@shsmu.edu.cn0086-021-22200000
CONTACTLin Huang, MD, PhD
dr.huang.lin@shsmu.edu.cn0086-18116061178

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Apr 15, 2026