Safety and Tolerability of Low Dose Radiotherapy Concurrent SBRT and PD-1 Inhibitors in Advanced NSCLC.

Trial Title: Safety and Tolerability of Low Dose Radiotherapy Concurrent SBRT and PD-1 Inhibitors in Advanced NSCLC.

NCT ID: NCT05615142

Condition: NSCLC
Low Dose Radiotherapy
Stereotactic Body Radiotherapy
PD-1 Inhibitor

Conditions: Official terms:
Carcinoma, Non-Small-Cell Lung
Immune Checkpoint Inhibitors

Study type: Interventional

Study phase: Phase 1

Overall status: Recruiting

Study design:

Allocation: N/A

Intervention model: Single Group Assignment

Primary purpose: Treatment

Masking: None (Open Label)

Intervention:

Intervention type: Radiation
Intervention name: Low Dose Radiotherapy
Description: LDRT at dose escalation levels: 2 Gy/1f, 4 Gy/2f, 6 Gy/3f with conventional external beam radiation.
Arm group label: LDRT+SBRT Combined with PD-1 Inhibitors

Other name: LDRT

Intervention type: Radiation
Intervention name: stereotactic body radiation therapy
Description: Partial SBRT at dose escalation levels: 10 Gy/1f, 20 Gy/2f, 30 Gy/3f.
Arm group label: LDRT+SBRT Combined with PD-1 Inhibitors

Other name: SBRT

Intervention type: Drug
Intervention name: PD-1 Inhibitors
Description: Patients will receive treatment with PD-1 inhibitor (dose as recommended in the instruction manual) every 3 weeks for a maximum of 48 months.
Arm group label: LDRT+SBRT Combined with PD-1 Inhibitors

Summary: This pilot phase I trial aims to investigate the safety and tolerability of low dose radiotherapy (LDRT) and concurrent partial stereotactic body radiation therapy (SBRT) in combination with programmed cell death-1 (PD-1) inhibitors in Stage IV non-small cell lung cancer (NSCLC) patients who have failed standard therapy. At least 9 participants will be enrolled in this study. All will take part at West China Hospital, Sichuan University.

Detailed description: This exploratory phase I study will be conducted in West China Hospital, Sichuan University. A dose escalation of low dose radiotherapy (LDRT) and partial SBRT, 3 patients per cohort (a total of 9 patients) will be enrolled to determine the maximum tolerated dose (MTD) and dose-limiting toxicity (DLT). All eligible patients will receive LDRT + partial SBRT at different dose levels (decried as below), followed by PD-1 inhibitors starting within 7 days after radiation completed. PD-1 inhibitors will be given at doses as recommended in the instruction manual every 3 weeks until disease progression, unacceptable toxicities, the patient withdraws informed consent, or PD-1 inhibitors reaches a maximum of up to 48 months. Patients in the dose escalation will receive LDRT + partial SBRT at 3 cohorts with increasing dose levels: 2 Gy (2 Gy/f) + 10 Gy (10 Gy/f) in 1 fraction in dose level 1; 4 Gy (2 Gy/f) + 20 Gy (10 Gy/f) in 2 fractions in dose level 2; 6 Gy (2 Gy/f) + 30 Gy (10 Gy/f) in 3 fractions in dose level 3.

Criteria for eligibility:
Criteria:
Inclusion Criteria: 1. Be willing and able to provide written informed consent/assent for the trial. 2. Be ≥18 years of age on day of signing informed consent. 3. Patients with histologically or cytologically confirmed stage IV NSCLC. 4. Be willing to undergo repeat biopsy of tumor lesions according to the study protocol. 5. Patients who have failed the standard therapy, or who are unsuitable for standard treatment, or refuse chemotherapy. 6. At least one measurable lesion according to RECIST 1.1. A lesion that has previously received radiotherapy can be considered a target lesion only if this lesion is clearly progressed after radiotherapy. 7. The target lesions (irradiated lesions) are > 5cm in in diameter 8. ECOG 0-2. 9. Life expectancy of > 3 months. 10. Patients must have normal organ and bone marrow function as defined below: Total bilirubin /= 3500/uL, ANC >/= 1500/uL *Platelets >/= 90K/ul *Hemoglobin >/= 9g/dL *Creatinine /= 50% and QTcF (Fridericia's formula) ≤ 450ms 11. Patients has recovered (i.e., ≤ Grade 1 or at baseline) from adverse events due to a previously administered agent. 12. Wash out period for chemotherapy is more than ≥ 4 weeks, for targeted small molecule therapy ≥ 5 half-lives; palliative radiotherapy must have been completed for at least ≥ 2 weeks, chest radiotherapy must have been completed for at least ≥ 4 weeks, and major surgery must have been completed for ≥ 4 weeks. 13. Subjects with no severe pulmonary ventilation dysfunction, no acute heart failure, and no contraindication to radiotherapy as judged by the radiotherapist. Subjects who agree to receive immunotherapy and radiotherapy treatment. 14. Subjects should agree to use an adequate method of contraception. Exclusion Criteria: 1. Has known active central nervous system (CNS) metastases and/or carcinomatous meningitis and/or spinal cord compression, etc. 2. With oncologic emergencies that require immediate treatment 3. EGFR/ALK/ROS-1 mutation or mutation status unknown. 4. Has evidence of interstitial lung disease or active and/or non-infectious pneumonitis (drug-induced pneumonia, radiation-induced pneumonia, etc.) requiring steroid therapy. 5. History of pulmonary fibrosis, pulmonary hypertension, severe irreversible airway obstruction disease 6. Patients with peripheral neuropathy. 7. Significant heart disease or impairment of cardiac function 8. Fluid accumulating in the third space, such as pericardial effusion, pleural effusion and peritoneal effusion that remains uncontrolled by aspiration or other treatment 9. Known allergy to drugs or excipients, known severe allergic reaction to any of the PD-1 monoclonal antibodies 10. Severe infection within 4 weeks prior to the start of study treatment, including but not limited to hospitalization for infection, bacteremia, or severe pneumonia; treatment with oral or intravenous antibiotics within 2 weeks prior to the start of study treatment; patients receiving prophylactic antibiotic therapy (e.g., to prevent urinary tract infection or exacerbation of COPD) are eligible for this study. 11. Known or suspected active autoimmune disease (congenital or acquired) such as uveitis, enterocolitis, hepatitis, pituitary inflammation, vasculitis, nephritis, thyroiditis, etc. (patients with vitiligo, or resolved childhood asthma may be enrolled; patients with type I diabetes with good insulin control may also be enrolled) 12. Known allogeneic organ transplantation (except corneal transplantation) or allogeneic hematopoietic stem cell transplantation.

Gender: All

Minimum age: 18 Years

Maximum age: N/A

Healthy volunteers: No

Locations:

Facility:
Name: West China Hospital, Sichuan University

Address:
City: Chengdu
Zip: 610041
Country: China

Status: Recruiting

Contact:
Last name: Ren Luo, MD

Phone: 18349337131

Phone ext: +86
Email: luorenbu@gmail.com

Start date: December 15, 2021

Completion date: December 31, 2026

Lead sponsor:
Agency: Sichuan University
Agency class: Other

Source: Sichuan University

Record processing date: ClinicalTrials.gov processed this data on November 12, 2024

Source: ClinicalTrials.gov page: https://clinicaltrials.gov/ct2/show/NCT05615142