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Segmentectomy Versus Lobectomy for Deep Solid-Dominant Early-Stage NSCLC (SOLID)

7 luglio 2026 aggiornato da: Zhigang Li, Shanghai Chest Hospital

Comparison of Segmentectomy and Lobectomy for Deeply Located, Solid-Dominant Early-Stage Non-Small Cell Lung Cancer (<=2 cm): A Multicenter, Open-Label, Phase III, Randomized, Controlled, Non-Inferiority Clinical Trial

SOLID is a multicenter, open-label, randomized, controlled, phase III non-inferiority trial comparing anatomic segmentectomy with lobectomy in patients with deeply located, solid-dominant, clinical stage IA non-small cell lung cancer (NSCLC) measuring <=2 cm. Eligible participants will undergo centralized imaging review and will be randomized preoperatively in a 1:1 ratio before induction of anesthesia.

The primary endpoint is 5-year overall survival. The key supportive secondary endpoint is 5-year recurrence-free survival. The study will enroll 1,200 participants and will use intention-to-treat analysis for the primary endpoint. An independent Data and Safety Monitoring Board and an independent Endpoint Adjudication Committee will oversee safety, surgical quality, data quality, and endpoint adjudication.

Panoramica dello studio

Stato

Non ancora reclutamento

Condizioni

Intervento / Trattamento

Descrizione dettagliata

Segmentectomy has been established as an accepted treatment option for selected small peripheral NSCLC, but high-level randomized evidence is limited for tumors located in the inner two-thirds of the lung parenchyma. Deep, solid-dominant nodules may have higher oncologic risk, more complex anatomy, and greater difficulty achieving conventional linear surgical margins.

This trial evaluates whether standardized anatomic segmentectomy, including surgical quality control and lymph-node dissection requirements, is non-inferior to lobectomy for overall survival in patients with deeply located, solid-dominant, clinical stage IA NSCLC <=2 cm. The trial incorporates centralized pre-randomization imaging review, mandatory recording of margin and surgical quality metrics, systematic or lobe-specific lymph-node dissection, independent endpoint adjudication, and DSMB safety and quality oversight.

Participants randomized to the segmentectomy arm will undergo anatomic segmentectomy when feasible. Conversion to lobectomy is required for intraoperative frozen-section N1/N2 nodal metastasis and may occur for inadequate margins, anatomic difficulty, or safety concerns. Participants randomized to the lobectomy arm will undergo standard anatomic lobectomy. Intraoperative findings and final pathology do not change the original randomized assignment for the primary intention-to-treat analysis.

Tipo di studio

Interventistico

Iscrizione (Stimato)

1200

Fase

  • Non applicabile

Contatti e Sedi

Questa sezione fornisce i recapiti di coloro che conducono lo studio e informazioni su dove viene condotto lo studio.

Luoghi di studio

  • Cina
    • Shanghai Municipality
      • Shanghai, Shanghai Municipality, Cina, 200030
        • Shanghai Chest Hospital
        • Contatto:
          • Qing Shanghai Chest Hospital
          • Numero di telefono: 18516349006
          • Email: pillawang@163.com

Criteri di partecipazione

I ricercatori cercano persone che corrispondano a una certa descrizione, chiamata criteri di ammissibilità. Alcuni esempi di questi criteri sono le condizioni generali di salute di una persona o trattamenti precedenti.

Criteri di ammissibilità

Età idonea allo studio

  • Adulto
  • Adulto più anziano

Accetta volontari sani

No

Descrizione

Inclusion Criteria:

  1. Age 18 to 80 years.
  2. Solitary pulmonary nodule with maximum diameter <=2 cm confirmed by preoperative thin-slice CT (<=1 mm) and 3D reconstruction.
  3. Solid-dominant nodule with consolidation-to-tumor ratio (CTR) >0.5, including pure-solid nodules.
  4. Deeply located lesion, defined as the lesion center located in the inner two-thirds of the lung field on axial, coronal, and sagittal MPR images.
  5. Clinically definite suspected primary NSCLC after complete preoperative work-up and MDT discussion, with estimated malignancy probability >=95%. Preoperative pathologic confirmation is not mandatory, but preoperative or intraoperative pathology should be obtained when technically safe and feasible.
  6. Complete staging with thin-slice contrast-enhanced chest CT, whole-body PET-CT, brain contrast-enhanced MRI or CT, and serum tumor markers as appropriate; clinical stage IA (cT1a-bN0M0) without regional nodal or distant metastasis.
  7. Cardiopulmonary function sufficient to tolerate both lobectomy and segmentectomy, with FEV1 and DLCO >=60% predicted.
  8. Written informed consent, including special disclosure that final pathology may be benign.
  9. Centralized imaging review confirmation by the lead-center technical committee before randomization.

Exclusion Criteria:

  1. Lesion located in the right middle lobe.
  2. Lesion located in the inner two-thirds but adjacent to the lung apex or base and judged suitable for wedge resection.
  3. Two or more lesions requiring anatomic resection. One secondary lesion requiring only non-anatomic wedge resection is allowed; two main lesions in the same segment are excluded.
  4. Prior ipsilateral lung surgery or another malignancy within 5 years.
  5. Severe cardiovascular or cerebrovascular disease or other comorbidity making lobectomy or conversion to lobectomy intolerable.
  6. Planned basal segmentectomy (S7-10); proper segmentectomy is permitted.

Piano di studio

Questa sezione fornisce i dettagli del piano di studio, compreso il modo in cui lo studio è progettato e ciò che lo studio sta misurando.

Come è strutturato lo studio?

Dettagli di progettazione

  • Scopo principale: Trattamento
  • Assegnazione: Randomizzato
  • Modello interventistico: Assegnazione parallela
  • Mascheramento: Nessuno (etichetta aperta)

Armi e interventi

Gruppo di partecipanti / Arm
Intervento / Trattamento
Sperimentale: Segmentectomy
Participants assigned to this arm will undergo anatomic pulmonary segmentectomy. Combined segmentectomy or proper segmentectomy is permitted; basal segmentectomy (S7-10) is prohibited. Segmentectomy must include anatomic treatment of the segmental hilar artery, vein, and bronchus, margin assessment, and required lymph-node dissection. Conversion to lobectomy is permitted or required according to protocol-defined clinical and safety criteria.
Procedura: Anatomic Segmentectomy
Anatomical resection of the involved pulmonary segment or segments with lymph-node dissection and surgical quality-control assessment.
Comparatore attivo: Lobectomy
Participants assigned to this arm will undergo standard anatomic pulmonary lobectomy with required systematic or lobe-specific lymph-node dissection.
Procedura: Anatomic Lobectomy
Anatomical resection of the involved pulmonary lobe with lymph-node dissection.

Cosa sta misurando lo studio?

Misure di risultato primarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Overall Survival
Lasso di tempo: 5 years after randomization
Overall survival is defined as the time from randomization to death from any cause. The primary analysis will compare segmentectomy with lobectomy using the intention-to-treat set and a non-inferiority hazard-ratio margin of 1.54.
5 years after randomization

Misure di risultato secondarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Recurrence-Free Survival
Lasso di tempo: 5 years after randomization
Recurrence-free survival is defined as the time from randomization to first recurrence, distant metastasis, second primary lung cancer, or death from any cause. Event-free participants will be censored at the last event-free follow-up. RFS will be formally tested only if OS non-inferiority is established.
5 years after randomization
Locoregional Recurrence Rate
Lasso di tempo: Up to 5 years after randomization
Proportion of participants with recurrence at the surgical margin, ipsilateral remaining lung, or ipsilateral hilar/mediastinal lymph nodes.
Up to 5 years after randomization
Distant Metastasis Rate
Lasso di tempo: Up to 5 years after randomization
Proportion of participants with metastasis involving contralateral lung, pleura, N3 lymph nodes, or extrathoracic organs.
Up to 5 years after randomization
Patient-Reported Quality of Life Score (EORTC QLQ-C30)
Lasso di tempo: Baseline and 6, 12, and 36 months after surgery
Patient-reported quality of life measured using EORTC QLQ-C30, with attention to dyspnea, chest pain, and cough.
Baseline and 6, 12, and 36 months after surgery
Six-Minute Walk Distance
Lasso di tempo: Baseline and 6 and 12 months after surgery
Change in 6-minute walk test distance.
Baseline and 6 and 12 months after surgery
FEV1 Change Rate
Lasso di tempo: Baseline and 6 and 12 months after surgery
Change or loss rate in FEV1 (Forced Expiratory Volume in 1 second).
Baseline and 6 and 12 months after surgery
Surgical Quality Metrics
Lasso di tempo: Perioperative period
Surgical grade distribution, margin distance, R0 resection rate, lymph-node dissection station and count compliance, and conversion rate from segmentectomy to lobectomy.
Perioperative period
Perioperative Complications
Lasso di tempo: Through discharge or 30 days after surgery, whichever came first
Postoperative adverse events graded by Clavien-Dindo, with emphasis on grade II or higher complications.
Through discharge or 30 days after surgery, whichever came first
30-Day Mortality
Lasso di tempo: 30 days after surgery
All-cause mortality within 30 days after surgery.
30 days after surgery
DLCO Change Rate
Lasso di tempo: Baseline and 6 and 12 months after surgery
Change or loss rate in DLCO (Diffusing Capacity of the Lungs for Carbon Monoxide).
Baseline and 6 and 12 months after surgery
Patient-Reported Lung Cancer Symptom Score (EORTC QLQ-LC13)
Lasso di tempo: Baseline and 3, 6, 12, and 36 months after surgery
Patient-reported lung cancer-specific symptoms measured using EORTC QLQ-LC13, with attention to dyspnea, chest pain, and cough.
Baseline and 3, 6, 12, and 36 months after surgery
90-Day Mortality
Lasso di tempo: 90 days after surgery
All-cause mortality within 90 days after surgery.
90 days after surgery

Collaboratori e investigatori

Qui è dove troverai le persone e le organizzazioni coinvolte in questo studio.

Sponsor

Shanghai Chest Hospital

Studiare le date dei record

Queste date tengono traccia dell'avanzamento della registrazione dello studio e dell'invio dei risultati di sintesi a ClinicalTrials.gov. I record degli studi e i risultati riportati vengono esaminati dalla National Library of Medicine (NLM) per assicurarsi che soddisfino specifici standard di controllo della qualità prima di essere pubblicati sul sito Web pubblico.

Studia le date principali

Inizio studio (Stimato)

1 luglio 2026

Completamento primario (Stimato)

1 luglio 2034

Completamento dello studio (Stimato)

1 luglio 2034

Date di iscrizione allo studio

Primo inviato

18 giugno 2026

Primo inviato che soddisfa i criteri di controllo qualità

7 luglio 2026

Primo Inserito (Effettivo)

13 luglio 2026

Aggiornamenti dei record di studio

Ultimo aggiornamento pubblicato (Effettivo)

13 luglio 2026

Ultimo aggiornamento inviato che soddisfa i criteri QC

7 luglio 2026

Ultimo verificato

1 luglio 2026

Maggiori informazioni

Termini relativi a questo studio

Parole chiave

Termini MeSH pertinenti aggiuntivi

Altri numeri di identificazione dello studio

  • SOLID-V1.9

Informazioni su farmaci e dispositivi, documenti di studio

Studia un prodotto farmaceutico regolamentato dalla FDA degli Stati Uniti

No

Studia un dispositivo regolamentato dalla FDA degli Stati Uniti

No

Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .

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