NSCLC Isotoxic Hypofractionated Radiotherapy

Carcinoma, Non-Small-Cell Lung Clinical Trial

— IHR  

Official title:

A Phase II Open-Label Multi-center Trial of Isotoxic Hypofractionated Radiotherapy for NSCLC

Clinical Trial Details — Status: Recruiting

Administrative data

• NCT number: NCT03606291
• Other study ID #: NSCLC isotoxic HypoRT
• Status: Recruiting
• Phase: N/A
• Start date: February 1, 2019
• Est. completion date: February 1, 2026

Study information

• Verified date: May 2022
• Source: The Second Hospital of Hebei Medical University
• Contact: Xiao-Ying Xue, Professor
• Phone: +86-158-0321-0636
• Email: xxy0636[@]163.com
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial 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.

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.

Recruitment information / eligibility

• Status: Recruiting
• Enrollment: 30
• Est. completion date: February 1, 2026
• Est. primary completion date: February 1, 2023
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years and older

Eligibility

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.

Related Conditions & MeSH terms

• Carcinoma, Non-Small-Cell Lung

Intervention

Radiation:
• 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

Locations

Country	Name	City	State
China	The Second Hospital of Hebei Medical University	Shijiazhuang	Hebei

Sponsors (1)

Lead Sponsor	Collaborator
The Second Hospital of Hebei Medical University

Country where clinical trial is conducted

China, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	radiation induced esophagitis and radiation induced pneumonitis	Number of participants with treatment-related severe adverse events:Grade IV radiation esophagitis, Grade III radiation esophagitis which results in interruption of radiotherapy for 7 days or more and Grade III or above radiation pneumonitis	2 years
Secondary	TTP	Record the time from the start of enrollment to the objective progression of the tumor	5 years
Secondary	PFS	Record the time from the start of enrollment to the progression of disease or death	5 years
Secondary	OS	Record the time from the start of enrollment to death(for any reason)	5 years
Secondary	LC	Record the time from the start of enrollment to progression or primary tumors	5 years