CClinicalTrials.gg
CompletedNCT04906070Updated Jun 3, 2022

Radiation Therapy (HB-001) by Alpha-particle Sources for Recurrent Malignant Solid Tumors in Japan

An interventional study of HB-001 in Breast Cancer and Head and Neck Cancer, sponsored by Hekabio. Completed at 4 sites in Japan. Open to participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2022-06-03.

Sponsored by Hekabio · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Registered 2 years after the study started (first participant enrolled May 2019, registered May 2021).
Phase
Not applicable
Study type
Interventional
Enrollment
14
Allocation
Not applicable
Ages
18 Years and older
Sex
All
01

Study summary

An intratumoral alpha particle based approach for cancer treatment using diffusion alpha-emitting radiation therapy (DaRT)

Read the detailed description

This will be a prospective, open label, single arm, controlled study, assessing the safety and efficacy of diffusing alpha emitters radiation therapy (DaRT) delivered through radioactive seeds inserted into the tumor. This approach combines the advantages of local intratumoral irradiation of the tumor, as used in conventional brachytherapy, with the power of the alpha radiation emitting atoms, that will be introduced in quantities considerably lower than radiation therapy already used in patients. Superficial lesions with histopathological confirmation of malignancy will be treated using DaRT seeds. Reduction in tumor size 70 days after DaRT insertion will be assessed. Safety will be assessed by the incidence, severity and frequency of all Adverse Events (AE).

02

Conditions studied

  • Breast Cancer
  • Head and Neck Cancer
03

In context

Head and Neck Neoplasms

2,344 studies on the registry are indexed under Head and Neck Neoplasms; 551 are open to participants now.

This study's enrollment of 14 is below the median of 47 across 1,751 interventional studies indexed under Head and Neck Neoplasms.

Browse Head and Neck Neoplasms studies →

Lead sponsor

This is the only study on the registry with Hekabio as lead sponsor.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  1. Head and neck cancer or breast cancer patients with histopathological proven malignancies who have a history of radiation therapy and who have been diagnosed with refractory malignancies with or without medical treatment.
  2. Tumor size is 5 cm or less in the longest diameter
  3. Age 18 years or older
  4. Eastern Cooperative Oncology Group performance status is 2 or less
  5. Life expectancy: 6 months or longer
  6. Vital signs (systolic and diastolic blood pressure, pulse rate, body temperature, and respiratory rate) are stable
  7. Platelet count >= 100,000/mm3 and prothrombin time Prothrombin Time-International Normalized Ratio \<= 1.8
  8. Women of childbearing potential have to be confirmed not pregnant by a pregnancy test and have to agree to prevent conception throughout the study.
  9. Having received explanation about the study, consented to participate in the study and signed the informed consent form.
  10. Measurable disease according to RECIST v1.1

Exclusion criteria

Exclusion Criteria:

  1. The size of the tumor more than 5 cm in the maximum diameter.
  2. ECOG performance status is 3 or higher
  3. Continuously receiving medication that may have a significant impact on the evaluation of safety or efficacy, such as immunosuppressants and/or corticosteroids.
  4. History of serious allergy to the medicine for the treatments like anesthesia.
  5. There are tumors to be preferentially treated such as metastatic lesion other than the target tumor
  6. Having received chemotherapeutic drugs (except hormonal agents), immunotherapeutic agents, and molecular targeting agents in the past 30 days, which may affect the assessment of the safety or efficacy of the HB-001 brachytherapy.
  7. Having received immune checkpoint inhibitor in the past 2 months, which may affect the assessment of the safety or efficacy of the HB-001 brachytherapy.
  8. Having participated in different clinical studies in the past 30 days, which may affect the assessment of the safety or efficacy of HB-001 brachytherapy
  9. Pregnant women or breast-feeding mothers
  10. Those who do not wish to sign the informed consent form
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
14 participants (actual)

Study arms

  • Experimental
    HB-001 DaRT Seeds

    Intratumoral Diffusing alpha-emitters Radiation Therapy (DaRT) Seeds

    Device: HB-001

Interventions

  • DeviceHB-001

    An intratumoral insertion of a seed(s), loaded with Radium-224, securely fixed in the seeds. The seeds release by recoil into the tumor short-lived alpha-emitting atoms.

    Also known as: DaRT(Diffusing Alpha Radiation Emitters Therapy)

06

What researchers measure

Primary outcomes

  1. Tumor response to HB-001

    Assessment of tumors response using the Response Evaluation Criteria in Solid Tumors (RECIST) (Version 1.1)

    Time frame: 9 - 11 weeks after HB-001 seed insertion

Secondary outcomes

  1. Adverse Events

    The incidence, frequency, severity and causality of adverse events related to the HB-001

    Time frame: 12 weeks after HB-001 insertion

07

Study locations

4 sites
  • Tohoku University Hospital
    Miyagi, 980-8574, Japan
  • Kansai Medical University Hospital
    Osaka, 573-1191, Japan
  • National Cancer Center Hospital
    Tokyo, 104-0045, Japan
  • Tokyo Medical And Dental University Medical Hospital
    Tokyo, 113-8519, Japan
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jun 3, 2022, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04906070
Lead sponsor
Hekabio
Responsible party
Sponsor
First posted
May 28, 2021
Start date
May 25, 2019
Primary completion
Mar 31, 2022
Completion
May 27, 2022
Last update
Jun 3, 2022

Study contacts

Toshiro Mabuchi
study director · Hekabio

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Jun 2022. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion