Clinical trial Recruiting at 1 site Interventional Ages 65 to 120

Treatment of Breast Cancer with Alpha Radiation in Elderly or Frail Patients

Official title: A Pilot Feasibility and Safety Trial of Intratumoral Diffusing Alpha-emitter Radiation Therapy (DaRT) for the Treatment of Newly Diagnosed or Recurrent Breast Carcinoma in Frail or Elderly Patients.

Run by Alpha Tau Medical LTD. · NCT06202118 · Data updated 2026-11-12

This study is testing a new type of radiation treatment for breast cancer to see if it's safe and effective for older or frail patients.

More Breast Cancer trials

Quick facts

Study typeInterventional
Ages65 Years to 120 Years
SexAll
Enrollment10 (estimated)
SponsorAlpha Tau Medical LTD.
Industry-sponsored
Drugs / interventionsradiation
Locations1 site (Jerusalem)
StatusRecruiting
StartedFebruary 19, 2024
Main results expectedJanuary 2026
Study endsJune 2026
Registry record updatedFebruary 7, 2025
Trial IDNCT06202118 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are women aged 65 and older, or younger patients who are unfit for standard surgical treatment, with a single invasive breast tumor that meets specific criteria.

Probably not a fit

Patients with multiple lesions, those whose tumors are resectable, or those with significant comorbidities 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 using diffusing alpha radiation therapy (DaRT) for treating newly diagnosed or recurrent breast carcinoma in frail or elderly patients. It is a prospective, open-label, single-arm, multi-center interventional study that will enroll 10 subjects with various breast cancer subtypes. Participants will undergo a DaRT insertion procedure, followed by an acute follow-up phase of 4-8 weeks and a long-term follow-up phase lasting 24 months. The study aims to monitor the patients for safety and treatment outcomes over the entire duration.

Why it matters

Potential benefit: If successful, this treatment could provide a less invasive option for elderly or frail patients with breast cancer who are not candidates for traditional surgery.

How similar studies have gone: While the use of alpha radiation in cancer treatment is an emerging approach, this specific application in frail or elderly breast cancer patients is novel and has not been extensively tested in prior studies.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Histologically confirmed invasive breast tumor with no involvement of skin within 12 months.
* Tumor size ≤ 4 centimeters in the longest diameter.
* Tumor is not deemed as resectable with radical surgery or the patient does not wish to go through surgery
* De-novo or recurrent lesions.
* Single lesion per quadrant per subject.
* Targeted lesion must be technically amenable for complete coverage (including margins) by the DaRT seeds.
* Interstitial implant indication validated by multidisciplinary team.
* ECOG Performance Status ≤3.
* Life expectancy ≥12 months.
* Women Age ≥65 or younger if unfit for standard of care.
* Willing and have the ability to provide signed Informed Consent.
* Blood tests values:

  * Leucocytes ≥3000mm3,
  * Absolute neutrophil count ≥1500mm3,
  * Platelets ≥100,000 mm3,
  * Total bilirubin ≤ 1.5xULN,
  * AST, SGOT, SGPT ≤2.5xULN, If Alkaline Phosphatase ≤ 4xULN, then transaminases are normal.
  * Creatinine ≤ 2.0xULN.
  * INR or Prothrombin time ≤1.5xULN

Exclusion Criteria:

* T4 category with skin involvement.
* Ductal carcinoma in situ.
* Inflammatory breast carcinoma.
* Longest tumor diameter \>4 cm.
* Patients with prior radiation to the same area within the past 6 months.
* Has a known additional malignancy that is progressing or requires active treatment.
* Patients undergoing immunosuppressive and/or systemic corticosteroid treatment except for steroid inhalations for treatment of asthma or lung disease
* Subjects not willing to sign an informed consent.

Where it's running

  • Hadassah Medical Center
    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.