AzTrials
AzTrials

Solid TumorPhase 1NCT06349837

Safety and Tolerability of LDRT Plus Concurrent Partial SBRT and Tislelizumab in Patients With Bulky Tumors

A Phase 1 study testing Tislelizumab, Low Dose Radiotherapy and Stereotactic Ablative Radiotherapy in people with Solid Tumor, run by Sichuan University at 1 site in China.

Recruiting

Looking for participants now. Contact the study team or a site below to ask about taking part.

Sites and contacts
Official record
Search all trials

Trial summary

This is a 3+3 dose escalation phase I study which aims to evaluate the safety and tolerability of low dose radiotherapy (LDRT) plus concurrent partial Stereotactic Ablative Radiotherapy (SBRT) and Tislelizumab in Patients with bulky tumors who have failed standard therapy. Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Solid Tumor
What is being tested?
Tislelizumab, Low Dose Radiotherapy and Stereotactic Ablative Radiotherapy
Could I receive a placebo?
No, everyone receives an active treatment
How many people
24 participants
Where
1 siteChina
Study dates
18 Apr 2024to 30 Nov 2028
Phase
Phase 1
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Be willing and able to provide written informed consent/assent for the trial.
  • Be ≥18 years of age on day of signing informed consent.
  • Patients with histologically or cytologically confirmed stage IV solid tumours.
  • Be willing to undergo repeat biopsy of tumor lesions according to the study protocol.
  • Patients who have failed the standard therapy, or who are unsuitable for standard treatment, or refuse chemotherapy.
  • 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.
Show all 10Show fewer
  • The target lesions (irradiated lesions) are > 5cm in in diameter
  • ECOG 0-2.
  • Life expectancy of > 3 months.
  • Subjects should agree to use an adequate method of contraception.

Who cannot join

  • Has known active central nervous system (CNS) metastases and/or carcinomatous meningitis and/or spinal cord compression, etc.
  • With oncologic emergencies that require immediate treatment
  • EGFR/ALK/ROS-1 mutation or mutation status unknown.
  • Has evidence of interstitial lung disease or active and/or non-infectious pneumonitis (drug-induced pneumonia, radiation-induced pneumonia, etc.) requiring steroid therapy.
  • History of pulmonary fibrosis, pulmonary hypertension, severe irreversible airway obstruction disease
  • Patients with peripheral neuropathy.
Show all 10Show fewer
  • Significant heart disease or impairment of cardiac function
  • Fluid accumulating in the third space, such as pericardial effusion, pleural effusion and peritoneal effusion that remains uncontrolled by aspiration or other treatment
  • Known allergy to drugs or excipients, known severe allergic reaction to any of the PD-1 monoclonal antibodies
  • Known allogeneic organ transplantation (except corneal transplantation) or allogeneic hematopoietic stem cell transplantation.

Trial locations and contacts

1 site in 1 country. Contact the study team or a site near you to ask about taking part.

China1 site, 1 recruiting
  • West China Hospital, Sichuan University

    Chengdu, Sichuan, 610041

    Ren Luo, MD, 18349337131, luorenbu@163.com

    Recruiting

Other trials in China

About this study

Official title: Safety and Tolerability of Low Dose Radiotherapy Plus Concurrent Partial Stereotactic Ablative Radiotherapy (Eclipse-RT) and Tislelizumab in Patients With Bulky Tumors

This is a 3+3 dose escalation phase I study which aims to evaluate the safety and tolerability of low dose radiotherapy (LDRT) plus concurrent partial Stereotactic Ablative Radiotherapy (SBRT) and Tislelizumab in Patients with bulky tumors who have failed standard therapy. At least 9 participants will be enrolled in this study.

Read the detailed description

This is 3+3 escalation phase I study which will be conducted in West China Hospital.

Step A: A dose escalation of low dose radiotherapy (LDRT) and partial SBRT, at least 3 patients per cohort (a total of at least 9 patients) will be enrolled to determine the maximum tolerated dose (MTD), dose-limiting toxicity (DLT) and recommended dose for expansion (RDE) for lung LDRT and partial SBRT.

All eligible patients will receive LDRT + partial SBRT and Tislelizumab at different dose levels (described as below). Tislelizumab will be given at 200mg as recommended in the instruction manual every 3 weeks until disease progression, unacceptable toxicities, the patient withdraws informed consent, or Tislelizumab reaches a maximum of up to 24 months.

Patients in the dose escalation will receive LDRT + partial SBRT at 3 cohorts with increasing dose levels: 6 Gy (2 Gy/f) + 24 Gy (8 Gy/f); 6 Gy (2 Gy/f) + 30 Gy (10 Gy/f); 6 Gy (2 Gy/f) + 45 Gy (15 Gy/f).

Step B: A dose expansion of LDRT + partial SBRT A cohort of 15 patients will receive lung LDRT and partial SBRT at the RDE determined during the dose-escalation phase in combination with PD-1 inhibitors to obtain additional safety and response data.

Conditions
Solid Tumor
Being tested
Tislelizumab, Low Dose Radiotherapy, Stereotactic Ablative Radiotherapy
Keywords
Low Dose Radiotherapy, Stereotactic Ablative Radiotherapy, Tislelizumab

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • TislelizumabDrug

    Also called PD-1 inhibitor

    Patients will receive treatment with Tislelizumab (200 mg, iv, d1), every 3 weeks for a maximum of 48 months.

  • Low Dose RadiotherapyRadiation

    Also called LDRT

    LDRT (d1-d3): 6Gy/3f with conventional external beam radiation.

  • Stereotactic Ablative RadiotherapyRadiation

    Also called SBRT

    Partial SBRT at dose escalation levels: 24Gy/3f, 30Gy/3f, 45Gy/3f.

Study groups in NCT06349837
Study groupRoleWhat they receive
LDRT+SBRT + TislelizumabExperimentalThis is a dose escalation study, low Dose Radiotherapy (LDRT) dose was 6Gy/3f, Stereotactic Ablative Radiotherapy (SBRT) dose was 24Gy/3f , 30Gy/3f and 45 Gy/3f, the dose of Tislelizumab was recommended in the instruction manual.
Receives: Drug: Tislelizumab; Radiation: Low Dose Radiotherapy; Radiation: Stereotactic Ablative Radiotherapy

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Dose Limiting Toxicities

    Measured: 24 months

Secondary outcomes (3)
  1. Objective Response Rate (ORR)

    The Objective Response Rate (ORR) is the percentage of participants who achieved a best overall response of Complete Response (CR) or Partial Response (PR) based on RECIST version 1.1.

    Measured: up to 24 months after the enrollment

  2. Progression Free Survival (PFS)

    Investigator assessed PFS according to RECIST v1.1. Progression free survival is defined as time of enrollment to first evidence of progressive disease.

    Measured: up to 24 months after the enrollment

  3. Overall Survival (OS)

    OS is defined as the difference (in months) between the date of study enrollment to the date death due to any cause

    Measured: up to 24 months after the enrollment

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted5 Apr 2024
  2. Study start18 Apr 2024
  3. Primary completion31 Mar 2028 (estimated)
  4. Study completion30 Nov 2028 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 1
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrolment
24 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06349837
Sponsor's protocol ID
ECLIPSE-02
Status last verified
Apr 2026
First submitted
31 Mar 2024
Last updated
1 May 2026
Results posted
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Publications

  • Yin L, Xue J, Li R, Zhou L, Deng L, Chen L, Zhang Y, Li Y, Zhang X, Xiu W, Tong R, Gong Y, Huang M, Xu Y, Zhu J, Yu M, Li M, Lan J, Wang J, Mo X, Wei Y, Niedermann G, Lu Y. Effect of Low-Dose Radiation Therapy on Abscopal Responses to Hypofractionated Radiation Therapy and Anti-PD1 in Mice and Patients With Non-Small Cell Lung Cancer. Int J Radiat Oncol Biol Phys. 2020 Sep 1;108(1):212-224. doi: 10.1016/j.ijrobp.2020.05.002. Epub 2020 May 15.

    PubMed 32417411
  • Lan J, Li R, Yin LM, Deng L, Gui J, Chen BQ, Zhou L, Meng MB, Huang QR, Mo XM, Wei YQ, Lu B, Dicker A, Xue JX, Lu Y. Targeting Myeloid-derived Suppressor Cells and Programmed Death Ligand 1 Confers Therapeutic Advantage of Ablative Hypofractionated Radiation Therapy Compared With Conventional Fractionated Radiation Therapy. Int J Radiat Oncol Biol Phys. 2018 May 1;101(1):74-87. doi: 10.1016/j.ijrobp.2018.01.071. Epub 2018 Mar 12.

    PubMed 29619980
  • Zhou X, Zhou L, Yao Z, Huang M, Gong Y, Zou B, Zhu J, Liu Y, Peng F, Zhang Y, Yu M, Li Y, Na F, Wu Y, Kang K, Xiu W, Zhang X, Zhou L, Xu Y, Wang J, Wang Y, Yang X, Wu Y, Li R, Zhang Y, Yang Z, Zhou Z, Bai J, Yi X, Tong R, Yin L, Chen C, Niedermann G, Lu Y, Xue J. Safety and Tolerability of Low-Dose Radiation and Stereotactic Body Radiotherapy + Sintilimab for Treatment-Naive Stage IV PD-L1+ Non-Small Cell Lung Cancer Patients. Clin Cancer Res. 2023 Oct 13;29(20):4098-4108. doi: 10.1158/1078-0432.CCR-23-0315.

    PubMed 37581611
  • Zhou L, Liu Y, Wu Y, Yang X, Spring Kong FM, Lu Y, Xue J. Low-dose radiation therapy mobilizes antitumor immunity: New findings and future perspectives. Int J Cancer. 2024 Apr 1;154(7):1143-1157. doi: 10.1002/ijc.34801. Epub 2023 Dec 7.

    PubMed 38059788
  • Barsoumian HB, Ramapriyan R, Younes AI, Caetano MS, Menon H, Comeaux NI, Cushman TR, Schoenhals JE, Cadena AP, Reilly TP, Chen D, Masrorpour F, Li A, Hong DS, Diab A, Nguyen QN, Glitza I, Ferrarotto R, Chun SG, Cortez MA, Welsh J. Low-dose radiation treatment enhances systemic antitumor immune responses by overcoming the inhibitory stroma. J Immunother Cancer. 2020 Oct;8(2):e000537. doi: 10.1136/jitc-2020-000537.

    PubMed 33106386
  • Barsoumian HB, Sezen D, Menon H, Younes AI, Hu Y, He K, Puebla-Osorio N, Wasley M, Hsu E, Patel RR, Yang L, Cortez MA, Welsh JW. High Plus Low Dose Radiation Strategy in Combination with TIGIT and PD1 Blockade to Promote Systemic Antitumor Responses. Cancers (Basel). 2022 Jan 3;14(1):221. doi: 10.3390/cancers14010221.

    PubMed 35008385
  • Menon H, Chen D, Ramapriyan R, Verma V, Barsoumian HB, Cushman TR, Younes AI, Cortez MA, Erasmus JJ, de Groot P, Carter BW, Hong DS, Glitza IC, Ferrarotto R, Altan M, Diab A, Chun SG, Heymach JV, Tang C, Nguyen QN, Welsh JW. Influence of low-dose radiation on abscopal responses in patients receiving high-dose radiation and immunotherapy. J Immunother Cancer. 2019 Sep 4;7(1):237. doi: 10.1186/s40425-019-0718-6.

    PubMed 31484556
  • Welsh JW, Tang C, de Groot P, Naing A, Hess KR, Heymach JV, Papadimitrakopoulou VA, Cushman TR, Subbiah V, Chang JY, Simon GR, Ramapriyan R, Barsoumian HB, Menon H, Cortez MA, Massarelli E, Nguyen Q, Sharma P, Allison JP, Diab A, Verma V, Raju U, Shaaban SG, Dadu R, Cabanillas ME, Wang K, Anderson C, Gomez DR, Hahn S, Komaki R, Hong DS. Phase II Trial of Ipilimumab with Stereotactic Radiation Therapy for Metastatic Disease: Outcomes, Toxicities, and Low-Dose Radiation-Related Abscopal Responses. Cancer Immunol Res. 2019 Dec;7(12):1903-1909. doi: 10.1158/2326-6066.CIR-18-0793. Epub 2019 Oct 28.

    PubMed 31658994

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing Tislelizumab, Low Dose Radiotherapy and Stereotactic Ablative Radiotherapy in people with Solid Tumor, run by Sichuan University at 1 site in China.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 10 inclusion and 10 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: looking for participants now, as of the sponsor's last update on 1 May 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in China. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

Contact Ren Luo, MD (18349337131 ext. +86, luorenbu@163.com), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Dose Limiting Toxicities (time frame: 24 months). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT06349837, which also lists 8 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 1 May 2026.

Free account

Log in to keep searching

You’ve used your 3 free searches. AzTrials is free: log in or create a free account to keep searching clinical trials and save the ones you want to follow.

Create a free accountLog in