RATS Sleeve Lobectomy After Neo-Chemo-IO for NSCLC
RIDDLE-NSCLC
Robotic-Assisted Sleeve Lobectomy for Non-Small Cell Lung Cancer After Neoadjuvant Chemoimmunotherapy
1 other identifier
observational
100
3 countries
10
Brief Summary
The goal of this multicenter prospective observational study is to learn about the surgical difficulty and outcomes of robotic-assisted sleeve lobectomy in patients with non-small cell lung cancer (NSCLC) after neoadjuvant chemoimmunotherapy. The main questions it aims to answer are: What is the rate of unsuccessful robotic-assisted sleeve lobectomy after neoadjuvant chemoimmunotherapy? What factors are associated with unsuccessful surgery? How do surgeons subjectively assess intraoperative difficulty across multiple dimensions during these procedures? In this study, unsuccessful surgery is defined as any of the following: conversion to thoracotomy, incomplete (non-R0) resection, or major postoperative complications. Participants who are scheduled to undergo curative-intent robotic-assisted sleeve lobectomy as part of their routine clinical care after neoadjuvant chemoimmunotherapy will be enrolled from multiple centers. Clinical, intraoperative, pathological, and short-term postoperative data will be collected prospectively. In addition, surgeons will be asked to provide a multidimensional subjective assessment of intraoperative difficulty, including factors such as pleural adhesions, hilar fibrosis, nodal matting, fissure completeness, and vascular inflammation or edema, to better characterize the technical challenges of surgery and their association with perioperative outcomes.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P50-P75 for all trials
Started Apr 2026
10 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
April 8, 2026
CompletedStudy Start
First participant enrolled
April 13, 2026
CompletedFirst Posted
Study publicly available on registry
April 21, 2026
CompletedPrimary Completion
Last participant's last visit for primary outcome
May 30, 2027
ExpectedStudy Completion
Last participant's last visit for all outcomes
May 30, 2027
April 21, 2026
April 1, 2026
1.1 years
April 8, 2026
April 16, 2026
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
Unsuccessful RATS Sleeve Lobectomy
The unsuccessful RATS sleeve lobectomy after neoadjuvant chemo-immunotherapy for NSCLC, defined as conversion to thoracotomy, non-R0 resection, or Clavien-Dindo grade ≥ III postoperative complications.
From enrollment to the end of treatment at 4 weeks
Secondary Outcomes (9)
Subjective Surgical Difficulty Assessment
From enrollment to the end of treatment at 1 day
Specific Difficulty Factors
From enrollment to the end of treatment at 1 day
Fissure Development Grade
From enrollment to the end of treatment at 1 day
Pleural Adhesions
From enrollment to the end of treatment at 1 day
Hilar Fibrosis
From enrollment to the end of treatment at 1 day
- +4 more secondary outcomes
Other Outcomes (2)
30- and 90-day readmission rates
From enrollment to the end of treatment up to 90 days
30- and 90-day mortality
From enrollment to the end of treatment up to 90 days
Study Arms (1)
ⅡB-Ⅲ NSCLC following Neo-Chemo-IO & RATS sleeve lobectomy
All patients in this cohort will receive neoadjuvant chemo-immunotherapy (Neo-Chemo-IO) first for clinical stage IIB-III non-small cell lung cancer ( NSCLC), followed by robot-assisted thoracoscopic surgery (RATS) sleeve lobectomy.
Interventions
After the neoadjuvant treatment reaches the expected effect (partial remission, complete remission, or stable disease), the patients will undergo RATS sleeve lobectomy.
Eligibility Criteria
The study population will include adult patients aged ≥18 years with pathologically or clinically diagnosed stage IIB-III non-small cell lung cancer (NSCLC), no distant metastasis (M0), and no contraindications to neoadjuvant chemoimmunotherapy or surgery. Participants will be selected from patients planned to undergo neoadjuvant chemoimmunotherapy followed by curative-intent robot-assisted thoracoscopic surgery (RATS) sleeve lobectomy. Relevant perioperative, pathological, and postoperative follow-up data will be collected prospectively.
You may qualify if:
- Age ≥18 years
- ECOG performance status 0-2
- 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 thoracic radiotherapy is allowed)
- Planned curative-intent RATS sleeve lobectomy with systematic nodal dissection
- Baseline and restaging imaging per protocol (CT ± PET-CT)
- Complete 30-day postoperative follow-up
- Ability to provide informed consent
You may not qualify if:
- Metastatic disease (M1) at baseline or on restaging.
- No immunotherapy component in neoadjuvant regimen (pure chemotherapy) .
- Prior systemic therapy or thoracic radiotherapy for the current cancer before starting chemo-IO.
- Palliative intent or planned non-anatomic resection only (e.g., wedge) when sleeve/lobectomy is indicated oncologically.
- Clear unresectability at restaging (e.g., multistation bulky N2/N3 not responding; unreconstructable T4 invasion) or MDT consensus against surgery.
- Contraindication to general anesthesia or prohibitive cardiopulmonary risk precluding sleeve/lobectomy.
- Active autoimmune disease requiring systemic immunosuppression within 2 years, prior organ transplant, or history of grade ≥2 pneumonitis/ILD
- Uncontrolled infection, pregnancy or breastfeeding, or any intercurrent illness that would compromise participation.
Contact the study team to confirm eligibility.
Sponsors & Collaborators
- Shanghai Chest Hospitallead
- The Affiliated Hospital of Qingdao Universitycollaborator
- Fujian Medical University Union Hospitalcollaborator
- Guangdong Provincial People's Hospitalcollaborator
- Tianjin Medical University Cancer Institute and Hospitalcollaborator
- Jiangsu Cancer Institute & Hospitalcollaborator
- Shenzhen People's Hospitalcollaborator
- University Hospital, Rouencollaborator
- Hopital Saint Joseph Marseillecollaborator
- Azienda Ospedaliera Cosenzacollaborator
Study Sites (10)
Fujian Medical University Union Hospital
Fuzhou, Fujian, 350001, China
Guangdong Provincial People's Hospital
Guangzhou, Guangdong, 510080, China
Shenzhen People's Hospital
Shenzhen, Guangdong, 518020, China
Jiangsu Cancer Institute & Hospital
Nanjing, Jiangsu, 210009, China
The Affiliated Hospital of Qingdao University
Qingdao, Shandong, 266000, China
Tianjin Medical University Cancer Institute & Hospital
Tianjing, Tianjing, 300060, China
Shanghai Chest Hospital, Shanghai Jiao Tong University Medicine of School
Shanghai, 200030, China
Hôpital Saint Joseph Marseille
Marseille, 13001, France
University Hospital, Rouen
Rouen, 76000, France
Azienda Ospedaliera di Cosenza
Cosenza, 87100, Italy
Related Publications (17)
Chu NQ, Tan KS, Dycoco J, Adusumilli PS, Bains MS, Bott MJ, Downey RJ, Gray KD, Huang J, Isbell JM, Molena D, Sihag S, Rocco G, Jones DR, Park BJ, Rusch VW. Determinants of successful minimally invasive surgery for resectable non-small cell lung cancer after neoadjuvant therapy. J Thorac Cardiovasc Surg. 2025 Mar;169(3):753-762.e6. doi: 10.1016/j.jtcvs.2024.08.012. Epub 2024 Aug 20.
PMID: 39168279BACKGROUNDSepesi B, Zhou N, William WN Jr, Lin HY, Leung CH, Weissferdt A, Mitchell KG, Pataer A, Walsh GL, Rice DC, Roth JA, Mehran RJ, Hofstetter WL, Antonoff MB, Rajaram R, Negrao MV, Tsao AS, Gibbons DL, Lee JJ, Heymach JV, Vaporciyan AA, Swisher SG, Cascone T. Surgical outcomes after neoadjuvant nivolumab or nivolumab with ipilimumab in patients with non-small cell lung cancer. J Thorac Cardiovasc Surg. 2022 Nov;164(5):1327-1337. doi: 10.1016/j.jtcvs.2022.01.019. Epub 2022 Jan 23.
PMID: 35190177BACKGROUNDBott MJ, Yang SC, Park BJ, Adusumilli PS, Rusch VW, Isbell JM, Downey RJ, Brahmer JR, Battafarano R, Bush E, Chaft J, Forde PM, Jones DR, Broderick SR. Initial results of pulmonary resection after neoadjuvant nivolumab in patients with resectable non-small cell lung cancer. J Thorac Cardiovasc Surg. 2019 Jul;158(1):269-276. doi: 10.1016/j.jtcvs.2018.11.124. Epub 2018 Dec 13.
PMID: 30718052BACKGROUNDBrunelli A, Hoffman R, Wotton R, Baijal S, Bhatnagar P, Clarke K, Escriu C, Fakih O, Franks K, Lodhia J, Nardini M, Naidu B, Shackcloth M. Surgical and Pathological Results Following Neoadjuvant Nivolumab and Platinum-Based Chemotherapy for Locally Advanced Resectable NSCLC: A Multicentre Real-World Series From England. Clin Lung Cancer. 2025 May;26(3):253-261. doi: 10.1016/j.cllc.2024.12.010. Epub 2024 Dec 25.
PMID: 39818517BACKGROUNDLi HJ, Ding JY, Nie Q, Hong HZ, Qiu ZB, Fu R, Zhang C, Zhang JT, Xu ZY, Yang J, Zhang S, Lin JT, Yang XN, Jiang BY, Zhong WZ. Advantages of robotic-assisted thoracic surgery after neoadjuvant therapy in NSCLC: A propensity score-matched analysis. Eur J Surg Oncol. 2025 Aug;51(8):110022. doi: 10.1016/j.ejso.2025.110022. Epub 2025 Apr 7.
PMID: 40250266BACKGROUNDMathey-Andrews C, McCarthy M, Potter AL, Beqari J, Wightman SC, Liou D, Raman V, Jeffrey Yang CF. Safety and feasibility of minimally invasive lobectomy after neoadjuvant immunotherapy for non-small cell lung cancer. J Thorac Cardiovasc Surg. 2023 Aug;166(2):347-355.e2. doi: 10.1016/j.jtcvs.2022.12.006. Epub 2022 Dec 16.
PMID: 36653251BACKGROUNDCooper AJ, Garbo E, Arfe A, Conroy M, Shaverdian N, Bott M, Gorria T, Pecci F, Aldea M, Anagnostou V, Schoenfeld A, Gomez D, Forde PM, Awad MM, Jones DR, Ricciuti B, Chaft JE. Real-world outcomes of neoadjuvant chemoimmunotherapy in patients with nonsmall cell lung cancer: Predictors of surgery, pathologic complete response, and event-free survival. Cancer. 2025 Sep 15;131(18):e70081. doi: 10.1002/cncr.70081.
PMID: 40923935BACKGROUNDKneuertz PJ, Villamizar N, Altorki NK, Phillips JD, Schnorr P, Jones D, Scott S, D'Souza DM, Baiu I, Abdel-Rasoul M, Schmidt J, Nguyen DM, Merritt RE. Minimally invasive resection of non-small cell lung cancer after chemoimmunotherapy: A multicenter study in academic hospitals. J Thorac Cardiovasc Surg. 2025 Dec;170(6):1803-1812.e2. doi: 10.1016/j.jtcvs.2025.07.030. Epub 2025 Jul 25.
PMID: 40716726BACKGROUNDProvencio M, Nadal E, Gonzalez-Larriba JL, Martinez-Marti A, Bernabe R, Bosch-Barrera J, Casal-Rubio J, Calvo V, Insa A, Ponce S, Reguart N, de Castro J, Mosquera J, Cobo M, Aguilar A, Lopez Vivanco G, Camps C, Lopez-Castro R, Moran T, Barneto I, Rodriguez-Abreu D, Serna-Blasco R, Benitez R, Aguado de la Rosa C, Palmero R, Hernando-Trancho F, Martin-Lopez J, Cruz-Bermudez A, Massuti B, Romero A. Perioperative Nivolumab and Chemotherapy in Stage III Non-Small-Cell Lung Cancer. N Engl J Med. 2023 Aug 10;389(6):504-513. doi: 10.1056/NEJMoa2215530. Epub 2023 Jun 28.
PMID: 37379158BACKGROUNDForde PM, Spicer JD, Provencio M, Mitsudomi T, Awad MM, Wang C, Lu S, Felip E, Swanson SJ, Brahmer JR, Kerr K, Taube JM, Ciuleanu TE, Tanaka F, Saylors GB, Chen KN, Ito H, Liberman M, Martin C, Broderick S, Wang L, Cai J, Duong Q, Meadows-Shropshire S, Fiore J, Bhatia S, Girard N; CheckMate 816 Investigators. Overall Survival with Neoadjuvant Nivolumab plus Chemotherapy in Lung Cancer. N Engl J Med. 2025 Aug 21;393(8):741-752. doi: 10.1056/NEJMoa2502931. Epub 2025 Jun 2.
PMID: 40454642BACKGROUNDLiu A, Zhao Y, Qiu T, Xuan Y, Qin Y, Sun X, Xu R, Du W, Wu Z, Veronesi G, Amore D, Jiao W. The long-term oncologic outcomes of robot-assisted bronchial single sleeve lobectomy for 104 consecutive patients with centrally located non-small cell lung cancer. Transl Lung Cancer Res. 2022 May;11(5):869-879. doi: 10.21037/tlcr-22-298.
PMID: 35693288BACKGROUNDJin D, Dai Q, Han S, Wang K, Bai Q, Gou Y. Effect of da Vinci robot-assisted versus traditional thoracoscopic bronchial sleeve lobectomy. Asian J Surg. 2023 Oct;46(10):4191-4195. doi: 10.1016/j.asjsur.2022.11.029. Epub 2022 Nov 28.
PMID: 36456441BACKGROUNDCatelli C, Corzani R, Zanfrini E, Franchi F, Ghisalberti M, Ligabue T, Meniconi F, Monaci N, Galgano A, Mathieu F, Addamo E, Sarnicola N, Fabiano A, Paladini P, Luzzi L. RoboticAssisted (RATS) versus Video-Assisted (VATS) lobectomy: A monocentric prospective randomized trial. Eur J Surg Oncol. 2023 Dec;49(12):107256. doi: 10.1016/j.ejso.2023.107256. Epub 2023 Oct 31.
PMID: 37925829BACKGROUNDOh DS, Reddy RM, Gorrepati ML, Mehendale S, Reed MF. Robotic-Assisted, Video-Assisted Thoracoscopic and Open Lobectomy: Propensity-Matched Analysis of Recent Premier Data. Ann Thorac Surg. 2017 Nov;104(5):1733-1740. doi: 10.1016/j.athoracsur.2017.06.020.
PMID: 29054214BACKGROUNDJin R, Zheng Y, Yuan Y, Han D, Cao Y, Zhang Y, Li C, Xiang J, Zhang Z, Niu Z, Lerut T, Lin J, Abbas AE, Pardolesi A, Suda T, Amore D, Schraag S, Aigner C, Li J, Che J, Hang J, Ren J, Zhu L, Li H. Robotic-assisted Versus Video-assisted Thoracoscopic Lobectomy: Short-term Results of a Randomized Clinical Trial (RVlob Trial). Ann Surg. 2022 Feb 1;275(2):295-302. doi: 10.1097/SLA.0000000000004922.
PMID: 33938492BACKGROUNDKent MS, Hartwig MG, Vallieres E, Abbas AE, Cerfolio RJ, Dylewski MR, Fabian T, Herrera LJ, Jett KG, Lazzaro RS, Meyers B, Mitzman BA, Reddy RM, Reed MF, Rice DC, Ross P, Sarkaria IS, Schumacher LY, Tisol WB, Wigle DA, Zervos M. Pulmonary Open, Robotic, and Thoracoscopic Lobectomy (PORTaL) Study: An Analysis of 5721 Cases. Ann Surg. 2023 Mar 1;277(3):528-533. doi: 10.1097/SLA.0000000000005115. Epub 2021 Sep 16.
PMID: 34534988BACKGROUNDHarris RA, Law JJ, Hao L, Situ D, Dittberner FA, Bendixen M, Licht PB, Rogers CA, Lim E. Survival outcome of VATS compared with open lobectomy for lung cancer: an individual patient data meta-analysis of randomised trials. Lancet. 2026 Mar 21;407(10534):1182-1190. doi: 10.1016/S0140-6736(26)00031-0.
PMID: 41864749BACKGROUND
Study Officials
- STUDY CHAIR
Zhigang Li, MD, PhD
Shanghai Chest Hospital, Shanghai Jiao Tong University Medicine of School
Central Study Contacts
Study Design
- Study Type
- observational
- Observational Model
- COHORT
- Time Perspective
- PROSPECTIVE
- Sponsor Type
- OTHER
- Responsible Party
- PRINCIPAL INVESTIGATOR
- PI Title
- Professor, MD, PhD
Study Record Dates
First Submitted
April 8, 2026
First Posted
April 21, 2026
Study Start
April 13, 2026
Primary Completion (Estimated)
May 30, 2027
Study Completion (Estimated)
May 30, 2027
Last Updated
April 21, 2026
Record last verified: 2026-04
Data Sharing
- IPD Sharing
- Will not share