Transthoracic vs Transbronchial Cryoablation for Early-stage Peripheral Lung Cancer

Not Applicable

Not yet recruiting

• Conditions: Lung Cancer
• Interventions: Device: Transbronchial cryoablation; Device: Transthoracic cryoablation

• Registration Number: NCT06572540
• Lead Sponsor: Jiayuan Sun

Brief Summary

The study aims to compare the efficacy and safety of transthoracic cryoablation to transbronchial cryoablation in the treatment of early-stage peripheral lung cancer.

Detailed Description

Ablation therapy has been widely used in the treatment of peripheral lung cancer. Among various ablation techniques, cryoablation has been demonstrated to be therapeutic efficacy with several advantages, including high safety, clear ablation borders, and minimal local pain. With the development of navigational bronchoscopy, pilot study on transbronchial cryoablation for peripheral lung cancer has proved its efficacy and safety, but there is a lack of prospective randomized controlled trials to verify its near-term as well as long-term efficacy and safety. This study was designed as a prospective, randomized controlled, multicenter clinical trial. A total of 110 participants will be randomly assigned to either the transbronchial group or the transthoracic group in a 1:1 ratio. The primary endpoint is the complete ablation rate at 12 months post-ablation. Secondary endpoints include technical success rate, complete ablation rate at 6 months post-ablation, local control rate at 1, 2 and 3 years post-ablation, progression-free survival, overall survival, and safety.

Study Timeline

• Status Verified: 2024-08
• Study First Submitted: 2024-08-20
• Study First Submitted QC: 2024-08-26
• Last Update Submitted: 2024-08-26
• Study First Posted: 2024-08-27
• Last Update Posted: 2024-08-27
• Study Start: 2024-09-01
• Primary Completion: 2025-12-31
• Study Completion: 2028-12-31

Recruitment & Eligibility

• Status: NOT_YET_RECRUITING
• Sex: All
• Target Recruitment: 110

Inclusion Criteria

1. Age older than 18 years.
2. Primary peripheral lung cancer diagnosed by pathology and pre-procedure staging examination suggesting clinical stage T1N0M0, stage IA (including postoperative new and multiple primary).
3. The target lesion was evaluated to be feasible for both CT and bronchoscopy-guided ablation.
4. Patients who are not suitable for surgery or refuse surgery, agree to undergo initial ablation therapy and sign informed consent form.

Exclusion Criteria

1. Patients with platelets <70×109/L, severe bleeding tendency and coagulation dysfunction that cannot be corrected in a short term.
2. Patients with severe pulmonary fibrosis and pulmonary arterial hypertension.
3. Infectious and radioactive inflammation around the lesion, skin infection at the puncture site that is not well controlled, systemic infection, high fever >38.5°C.
4. Patients with severe hepatic, renal, cardiac, pulmonary and cerebral insufficiency, severe anaemia, dehydration and serious disorders of nutritional metabolism that cannot be corrected or improved in a short term.
5. Those with poorly controlled malignant pleural effusions.
6. Anticoagulation therapy and/or anti-platelet drugs (except dabigatran, rivaroxaban and other new oral anticoagulants) have not been discontinued more than 5~7d before ablation.
7. Eastern Cooperative Oncology Group (ECOG) score >2.
8. Combination with other tumors with extensive metastases and an expected survival of <6 months.
9. Patients with episodic psychosis.
10. Pregnant women, or patients with pregnancy plan during the study period.
11. Have participated or are participating in other clinical studies within 30 days.
12. Any other condition that the investigator considers inappropriate for participation in this study.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Transbronchial cryoablation	Transbronchial cryoablation	Subjects will undergo bronchoscopically guided cryoablation. Appropriate guided bronchoscopic technique will be uesd. Cryoablation needle (flexible) will insert through the working channel of the bronchoscope to the target lesion, CBCT will be used to confirm the correct position and observe the ablation zone.
Transthoracic cryoablation	Transthoracic cryoablation	Subjects will undergo CT-guided cryoablation. According to the location of the lesion on the chest CT scan, the puncture point, direction of needle entry, and distance of needle entry will be determined. The primary cryoablation needle (via the chest wall) will be punctured into the lesion according to the pre-planed path, and the CT will confirm the correct position. One or more needles will rationally distributed in the lesion for ablation according to the morphology of the lesion.

Primary Outcome Measures

Name	Time	Method
Complete ablation rate at 12 months	Twelve months post-ablation	Twelve months after the overall ablation procedure, the proportion that subjects whose lesion recevied ablation maintain completely ablated account for all evaluable subjects who receive cryoablation.

Secondary Outcome Measures

Name	Time	Method
Complete ablation rate at 6 months	Six months post-ablation	Six months after the overall ablation procedure, the proportion that subjects whose lesion recevied ablation maintain completely ablated account for all evaluable subjects who receive cryoablation.
Progression-free survival (PFS)	From the time of treatment to the time of disease progression or death (determined by the one which occurs first), up to 36 months	PFS was defined from the first day after ablation to progression of target lesions and/or appearance of new lesions or death.
Overall survival（OS）	From the time of treatment to the time of the patient death, up to 36 months	Overall survival（OS) is evaluated after the treatment of ablation until the patient death.
Adverse event	Twelve months psot-ablation	All adverse events will be recorded during operation and during the follow-up, and be evaluated according to the CTCAE v5.0. Related and possible related AEs and SAEs will be determined and evaluated.
Technical success rate	Immediately after Each Operation	It is defined as the number of lesions for which the ablation needle reached the location of the lesion and was successfully ablated as a proportion of the total number of lesions to be ablated, as assessed by immediate post-ablation imaging
Local control rates at 1, 2 and 3 years postoperatively	12, 24, 36 monthspost-ablation	The number of lesions with complete and incomplete ablation at 1, 2, and 3 years after ablation treatment as a proportion of the number of all ablation-treated lesions.

Trial Locations

Locations (5)

Henan Provincial People's Hospital; 🇨🇳 Zhengzhou, Henan, China

West China Hospital, Sichuan University; 🇨🇳 Chengdu, Sichuan, China

Sir Run Run Shaw Hospital , affiliated with the Zhejiang University School of Medicine; 🇨🇳 Hangzhou, Zhejiang, China

The First Affiliated Hospital of Guangzhou Medical University; 🇨🇳 Guangzhou, Guangdong, China

Shanghai Chest Hospital, Shanghai Jiao Tong University School of Medicine; 🇨🇳 Shanghai, Shanghai, China