A Randomized Study of Primary Tumor Radiotherapy Omitting Clinical Target Volume for Patients With Stage Ⅳ NSCLC
Overview
- Phase
- Not Applicable
- Intervention
- Not specified
- Conditions
- Radiotherapy
- Sponsor
- Guizhou Medical University
- Enrollment
- 290
- Locations
- 1
- Primary Endpoint
- Local regional progression-free survival（LRPFS）
- Last Updated
- 5 years ago
Overview
Brief Summary
The aim of this randomized study is to investigate local tumor control, survival outcomes,and complications on patients of stage Ⅳ non small-cell lung cancer ,whom based on medication with concurrent primary radiotherapy omitting clinical tumor volume.
Detailed Description
Cancer Statistics,（2020）states that low lung cancer survival rates reflect the large proportion of patients (57%) diagnosed with metastatic disease, for which the 5-year relative survival rate is 5%.With the development of three-dimensional radiotherapy technology, the wide application of comprehensive treatment concept, and the understanding of the relationship between different metastatic state and survival of stage IV NSCLC, prospective and retrospective studies have confirmed that systemic therapy combined with primary tumor three-dimensional radiation Treatment is more conducive to improving symptoms and prolonging survival than medication alone. Some retrospective analysises of stage III NSCLC, omitting clinical target volume of primary tumor with intensity modulated radiotherapy showed no reduction in local control rate and survival time.Omitted CTV in Ⅳ NSCLC patients with primary tumor radiotherapy can make smaller target area, which could push up most of the local stage of late Ⅳ NSCLC patients with primary tumor radiation dose. Prospective studies are needed to further clarify whether omission of target areas may affect local control time, survival time, and radioactive toxicity.
Investigators
Eligibility Criteria
Inclusion Criteria
- •Patients with pathological or cytological diagnosis, stage IV \[UICC 2017 staging eighth edition\] NSCLC patients;
- •initial treatment (previously did not receive any treatment), it is recommended to complete the detection of driver genes (EGFR / ALK / ROS1) (tissue, blood);
- •Age 18 to 80 years old, physical status score ECOG 0 to 2 or KPS ≥ 70 (see Annex 2); Metastatic lesions in the distant area: conscious when brain metastasis; the number of metastatic lesions in the lung does not affect lung function and may be treated with primary and/or partial metastases;
- •no radiotherapy, targeted drug therapy and chemotherapy contraindications;
- •primary tumor radiotherapy requires IMRT technology;
- •Plan the design to give the primary tumor prescription dose (DTGTV) under the damage control threshold criteria;
- •The planned dose includes 100% GTV, 90% of the prescribed dose includes 98%\~100% of PTV \[planned target dose (DTPTV)\]; normal lung (full lung volume minus GTV volume) V20 ≤ 32%, MLD≤20Gy;
- •metastatic tumor radiotherapy is a three-dimensional radiotherapy technique (IMRT/SRT/SBRT/VMAT, etc.), and large-segment radiotherapy.
- •Subjects have no major organ dysfunction, or laboratory test indicators must meet the following requirements: Hematology: normal range according to laboratory standards; cardiac function: normal range; liver function: normal range; renal function: normal range Lung function: FEV1\>50%, impaired light-moderate lung function.
- •Informed consent (radiation, medication) before treatment;
Exclusion Criteria
- •Patients who do not meet the pathological type, stage, and survival status of the inclusion criteria;
- •patients with malignant pericardial effusion; Diffuse liver metastasis, intrapulmonary metastasis and has seriously affected patients with liver and lung function;
- •Patients with uncontrolled hypertension, diabetes, unstable angina, history of myocardial infarction, or symptomatic congestive heart failure or uncontrolled arrhythmias in the past 12 months; clinically diagnosed heart valve disease;
- •Active period of disease caused by bacteria, fungi or viruses; mental disorders; impaired severe lung function;
- •pregnant, lactating patients;
- •Patients with a history of other active malignancies other than small cell lung cancer before entering the group; non-melanoma skin basal cell carcinoma, in situ cervical cancer, and cured early prostate cancer;
- •Patients with allergies and no known alternatives to known or suspected drugs in any study;
- •Patients with poor compliance;
- •Researchers believe that it is not appropriate to participate in this test.
Outcomes
Primary Outcomes
Local regional progression-free survival（LRPFS）
Time Frame: Up to 5 years
LRPFS is defined as the duration of time from start of treatment to time of progression or recurrence, whichever occurs first.The target lesions is only for primary tumor and regional positive lymph nodes.
Secondary Outcomes
- Overall survival (OS)(Up to 5 years)
- Adverse events (toxicities)(Up to 5 years)
- Progression-free survival (PFS)(Up to 5 years)