NSCLC Isotoxic Hypofractionated Radiotherapy

NCT ID: NCT03606291

Last Updated: 2022-05-09

Basic Information

• Recruitment Status: RECRUITING
• Clinical Phase: NA
• Total Enrollment: 30 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2019-02-01
• Study Completion Date: 2026-02-01

Brief Summary

Radiotherapy plays an important role in non-small cell lung cancer (NSCLC), and concurrent chemoradiation is considered to be the standard treatment for locally advanced NSCLC. However, due to the patient's physical condition, comorbidities and other reasons, only about 1/3 of patients can receive concurrent chemoradiation. Radiotherapy alone or sequential chemoradiation has become the treatment protocol for most patients. Hypofractionated radiotherapy can be used in NSCLC because it can shorten the over treatment time and may potentially reduce the effect of accelerated repopulation and obtain higher biological effective dose（BED）.So far, the vast majority of radiotherapy prescriptions have given a uniform dose of 60 Gy. This unified prescription dosage approach is completely inconsistent with the concept of precision treatment. The Netherlands MAASTRO put forward the concept of in silico radiotherapy prescription, that is: the normal tissue limits are uniform, such as: V20% ≤ 30%, spinal cord 0> 45Gy, etc., This radiation prescription could reach the limits of the normal tissue of every patient; if no one tissue limits were reached, the highest dose was set up to 79.2 Gy (1.8 Gy, BID). MAASTRO applied this "iso-toxic" radiotherapy prescription and used accelerated hyperfractionation technology so that each patient received the maximum individualized radiation dose as possible. We will integrate this concept with hypofractionated radiotherapy in order to further improve patient survival.

Detailed Description

Radiotherapy plays an important role in non-small cell lung cancer (NSCLC), and concurrent chemoradiation is considered to be the standard treatment for locally advanced NSCLC. However, due to the patient's physical condition, comorbidities and other reasons, only about 1/3 of patients can receive concurrent chemoradiation. Radiotherapy alone or sequential chemoradiation has become the treatment protocol for most patients. Hypofractionated radiotherapy can be used in NSCLC because it can shorten the over treatment time and may potentially reduce the effect of accelerated repopulation and obtain higher biological effective dose（BED） So far, the vast majority of radiotherapy prescriptions have given a uniform dose of radiotherapy to all patients, regardless of individual factors such as tumor size, location, and adjacent vital organs, which may cause two consequences: First, small-volume tumors may, not receive enough radiation dose, resulting in a decrease in local control rates. Second, for large volumes of tumors or tumors adjacent to vital organs, even the "so-called standard dose" (60 Gy) may cause serious damage to normal tissues. This unified prescription dosage approach is completely inconsistent with the concept of precision treatment. The Netherlands MAASTRO put forward the concept of in silico radiotherapy prescription, that is: the normal tissue limits are uniform, such as: V20% ≤ 30%, spinal cord 0> 45Gy, etc., and each patient receives a different dose of radiation therapy. This radiation prescription could reach the limits of the normal tissue of every patient; if no one tissue limits were reached, the highest dose was set up to 79.2 Gy (1.8 Gy, BID). MAASTRO applied this "iso-toxic" radiotherapy prescription and used accelerated hyperfractionation technology so that each patient received the maximum individualized radiation dose as .From the model study to the long-term survival results, a series of encouraging results were achieved. The use of an individualized radiotherapy prescription based on iso-toxicity for the treatment of NSCLC in large-segment radiotherapy is expected to achieve: 1. For patients with small tumor volumes and no adjacent to vital organs, a higher radiation dose is given under safe conditions. 2. For patients with larger volumes of tumors or adjacent to vital organs, give safer doses.

Conditions

Carcinoma, Non-Small-Cell Lung

Study Design

• Allocation Method: NA
• Intervention Model: SINGLE_GROUP
• Primary Study Purpose: TREATMENT
• Blinding Strategy: NONE

Study Groups

isotoxic hypofractionation group

1. Hypofractionated radiation: 3Gy/f. 2,Individualized prescriptions for different patients:

(1) Spinal cord: 0%>45 Gy, and ≤2 Gy each time Lung: V20≤30%, V5≤65%, MLD≤16Gy Esophagus: highest dose ≤ 72Gy 3. Maximum limit: If the limit of any "A" is not reached, the maximum radiation dose is 72 Gy. The lowest radiation dose: 45Gy.

Group Type: EXPERIMENTAL

isotoxic hypofractionation

Intervention Type: RADIATION

the normal tissue limits are uniform, such as: V20% ≤ 30%, spinal cord 0\> 45Gy, etc., and used hypofractionated radiotherapy technology so that each patient received the maximum individualized radiation dose as possible

Interventions

isotoxic hypofractionation

the normal tissue limits are uniform, such as: V20% ≤ 30%, spinal cord 0\> 45Gy, etc., and used hypofractionated radiotherapy technology so that each patient received the maximum individualized radiation dose as possible

Intervention Type: RADIATION

Eligibility Criteria

Inclusion Criteria

1. Pathological or cytological diagnosis of non-small cell lung cancer patients, the clinical stage using the eighth edition of American Joint Committee on Cancer（AJCC）, including stage III without resectable or who when SBRT/SABR are not suitable;

2. Age ≥ 18 years;

3. The expected survival period is ≥ 3 months;

4. KPS score ≥ 60;

5. Normal blood count,liver and kidney function ≤ 2.5 times the upper limit of normal;

Exclusion Criteria

1. Serious medical problems require hospitalization, included (but not limited to ): history of pulmonary fibrosis, previous myocardial infarction within 6 months, heart failure grade II and above, uncontrolled heart failure, uncontrolled COPD, uncontrolled diabetes Wait;

2. Esophageal invasion (cT4);

3. Others are not suitable for receiving radiotherapy.

• Minimum Eligible Age: 18 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

The Second Hospital of Hebei Medical University

OTHER

Sponsor Role: lead

Responsible Party

Xue Xiaoying

Director of Radiotherapy

Responsibility Role: PRINCIPAL_INVESTIGATOR

Principal Investigators

Xiao-Ying Xue, Professor

Role: STUDY_DIRECTOR

The Second Hospital of Hebei Medical University

Qiang Lin, Professor

Role: STUDY_DIRECTOR

North China Petroleum Bureau General Hospital, Hebei Medical University

Chao-Xing Liu, Professor

Role: STUDY_DIRECTOR

No.1 Hospital of Shijiazhuang City

Locations

The Second Hospital of Hebei Medical University

Shijiazhuang, Hebei, China

Site Status: RECRUITING

Countries

China

Central Contacts

Xiao-Ying Xue, Professor

Role: CONTACT

xxy0636@163.com

+86-158-0321-0636

Facility Contacts

Xiao-Ying Xue, Professor

Role: primary

xxy0636@163.com

+86-158-0321-0636

Other Identifiers

NSCLC isotoxic HypoRT

Identifier Type: -

Identifier Source: org_study_id