Clinical trial Recruiting at 1 site Interventional Ages 18 and up

Treatment of recurrent lung cancer using alpha radiation emitters

Official title: A Feasibility and Safety Study of Intratumoral Diffusing Alpha Radiation Emitters for the Treatment of Recurrent Lung Cancer

Run by Alpha Tau Medical LTD. · NCT05632913 · Data updated 2026-11-12

This study is testing a new way to treat recurrent lung cancer by using a device that puts tiny seeds delivering alpha radiation directly into tumors to see if it’s safe and effective.

More Lung Cancer trials

Quick facts

Study typeInterventional
Ages18 Years and up
SexAll
Enrollment10 (estimated)
SponsorAlpha Tau Medical LTD.
Industry-sponsored
Drugs / interventionschemotherapy, immunotherapy, radiation
Locations1 site (Jerusalem)
StatusRecruiting
StartedJuly 1, 2023
Main results expectedFebruary 2027
Study endsFebruary 2027
Registry record updatedJune 16, 2026
Trial IDNCT05632913 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are adults aged 18 and older with histologically confirmed recurrent mediastinal tumors that can be treated with alpha radiation.

Probably not a fit

Patients with lesions larger than 3 cm or those with a life expectancy of less than 6 months may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This study evaluates the feasibility and safety of a novel treatment for recurrent lung cancer using a device that delivers diffusing alpha radiation directly into tumors. It involves a single center, open-label approach where eligible patients will undergo the insertion of DaRT seeds into their tumors. Following the procedure, participants will be monitored for a short-term period of 4-8 weeks and a long-term follow-up of 3 months to assess treatment outcomes. A total of 10 subjects will be enrolled in this prospective study.

Why it matters

Potential benefit: If successful, this treatment could provide a new therapeutic option for patients with recurrent lung cancer who have limited treatment alternatives.

How similar studies have gone: While this approach is novel, similar studies using localized radiation therapies have shown promise in treating various cancers.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Histologically and/or cytologically proven recurrent mediastinal tumors
* Target lesion is technically amenable for at least 50% coverage by the Alpha DaRT seeds as determined by the treating physician
* Up to two treatable lesions
* Interstitial radiation indication validated by a multidisciplinary team.
* Measurable lesion per RECIST (version 1.1) criteria
* Lesion size ≤ 3 cm in the longest diameter
* Age ≥18 years old
* ECOG Performance Status Scale ≤ 3
* Life expectancy is more than 6 months
* WBC ≥ 3500/µl, granulocyte ≥ 1500/µl
* Platelet count ≥60,000/µl
* Calculated or measured creatinine clearance ≥ 60cc/min. Calculated, or measured creatinine clearance can be≥ 40cc/min given stability of creatinine levels over the past three weeks (at least 1 test per week).
* AST and ALT ≤ 2.5 X ULN
* INR \< 1.4 for patients not on Warfarin
* Subjects are willing and able to sign an informed consent form
* Women of childbearing potential (WOCBP) will have evidence of negative pregnancy test before the Ra-224 implantation and are required to use an acceptable contraceptive method to prevent pregnancy for 3 months after brachytherapy.

Exclusion Criteria:

* Concomitant chemotherapy or immunotherapy
* Brain metastases Connective tissue disease (scleroderma, lupus)
* Known hypersensitivity to any of the components of the treatment.
* Patients undergoing systemic immunosuppressive therapy excepting intermittent, brief use of systemic corticosteroids.
* Clinically significant cardiovascular disease, e.g. cardiac failure of New York Heart Association classes III-IV, uncontrolled coronary artery disease, cardiomyopathy, uncontrolled arrhythmia, uncontrolled hypertension, or history of myocardial infarction in the last 12 months.
* Patients with uncontrolled intercurrent illnesses including, but not limited to an active infection requiring systemic therapy or a known psychiatric or substance abuse disorder(s) that would interfere with cooperation with the requirements of the trial or interfere with the study endpoints.
* Has a known additional malignancy that is progressing or requires active treatment. Exceptions include basal cell carcinoma of the skin or squamous cell carcinoma of the skin that has undergone potentially curative therapy or in situ cervical cancer.
* Patient requires treatment not specified in this protocol which may conflict with the endpoints of this study including evaluation of response or toxicity of DaRT.
* Patients must agree to use adequate contraception (vasectomy or barrier method of birth control) prior to study entry, for the duration of study participation and for 3 months after discontinuing therapy.
* Volunteers participating in another interventional study in the past 30 days which might conflict with the endpoints of this study or the evaluation of response or toxicity of DaRT.
* High probability of protocol non-compliance (in opinion of investigator).
* Breastfeeding women or women of childbearing potential unwilling or unable to use an acceptable contraceptive method to prevent pregnancy for 3 months after RT.

Where it's running

  • Hadassah University Hospital
    Jerusalem, Israel
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.