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RecruitingNCT07377487INDIGOUpdated Aug 20, 2026

TheraSphere Japan Pre-Market Study

An interventional study of TheraSphere Y-90 glass microsphere in Liver Neoplasms, sponsored by Boston Scientific Corporation. Recruiting at 4 sites in Japan. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-08-20.

Sponsored by Boston Scientific Corporation · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
51
Allocation
Not applicable
Ages
18 Years and older
Sex
All
01

Study summary

To investigate the safety and effectiveness of BSJ019T in Japanese patients with primary or secondary liver who are not candidate for standard treatment.

02

Conditions studied

  • Liver Neoplasms

Keywords

  • Carcinoma
  • Carcinoma, Hepatocellular
  • Neoplasms
  • Digestive System Neoplasms
  • Neoplasms, Glandular and Epithelial
  • Neoplasms by Histologic Type
  • Neoplasms by Site
  • Digestive System Diseases
  • Liver Diseases
  • Neoplasm Metastasis
  • Colorectal Neoplasms
  • Colonic Diseases
  • Carcinoma, Neuroendocrine
  • Neuroendocrine Tumors
03

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

[Inclusion criteria based on the clinical evaluation]

  1. Patient aged >18 years at time of consent
  2. Patient is able and willing to participate in the study and has provided written informed consent
  3. Patient who is determined to have failed or not be eligible for standard treatment by the multidisciplinary board
  4. Primary or secondary liver cancer (by histology or imaging)
  5. Measurable disease defined as at least one uni-dimensional measurable liver lesion by CT/MRI (according to RECIST 1.1)
  6. Liver dominant disease (patient prognosis is driven by liver tumor)
  7. Tumor replacement \<50% of total liver volume based on visual estimation by the investigator
  8. Expected life expectancy ≥ 3 months or more from the index procedure
  9. ECOG Performance Status score of 0 or 1
  10. Negative pregnancy test in women of child-bearing potential
  11. Adequate contraception for the patient and his/her sexual partner when applicable.
  12. Adequate liver function, as defined by:

    • Child Pugh A or to B7 (HCC)
    • Must have bilirubin ≤ 2 mg/dL
    • ALT and AST must be \<5 x ULN
    • Albumin ≥3.0 g/dL
  13. Adequate renal function, as defined by:

    • Serum creatinine must be ≤1.5 x ULN
  14. Adequate hematological function, as defined by:

    • Neutrophil count > 1200 /mm3
    • hemoglobin ≥85 mg/L
    • platelet count >50 x 109/L
    • INR must be \<2.0 or >50% prothrombin activity

    [Inclusion Criteria based on the imaging evaluation]

  15. After 99mTc MAA administration, in SPECT/CT imaging, good PVT targeting and uptake of 99mTc MAA, if present
  16. Future liver remnant volume (FLRV) >30% of whole liver volume. FRLV is the volume of liver not planned to be treated with TheraSphere and free of tumor

Exclusion criteria

Exclusion Criteria:

[Exclusion Criteria based on the clinical evaluation]

  1. Vp4 according to the Liver Cancer Study Group of Japan (LCSGJ) portal vein tumor thrombosis classification1
  2. History of severe allergy or intolerance to contrast agents, narcotics sedatives or atropine that cannot be managed medically.
  3. Contraindications to angiography and selective visceral catheterization
  4. Received any prior external beam radiation treatment to the liver
  5. Received any prior yttrium-90 microsphere treatment to the liver
  6. Received previous peptide receptor radionuclide therapy (PRRT)
  7. Plan to start systemic anticancer treatment in the next 3 month after the index procedure.
  8. Presence of ongoing adverse event due to prior therapy as judged by the principal investigator or sub-investigator to affect the safety evaluation of the study device.
  9. Evidence of pulmonary insufficiency or clinically evident chronic obstructive pulmonary disease
  10. Undergone any intervention for, or compromise of, the Ampulla of Vater within that last 3 months or patient with biliodigestive anastomosis.
  11. Presence of ascites, clinical or radiological, "trace" of ascites is acceptable.
  12. Presence of Hepatic encephalopathy (Grade ≥2)
  13. Previous liver function decompensation within the last 6 months (ascites, encephalopathy, jaundice)
  14. Patient with infiltrative disease presentation (not suitable for repeated measurement)
  15. Patients who are pregnant or breast-feeding and does not want to stop.
  16. Have any disease or condition that would preclude the safe use of BSJ019T, including concurrent dialysis treatment, or unresolved serious infections
  17. Participating in concurrent clinical studies or interventional clinical studies
  18. Any condition where the Investigator feels the patient would not be able to participate/finish the study
  19. Previous gastrointestinal bleeding related to portal hypertension within the last 3 months (preventive treatment is acceptable)

    [Exclusion Criteria based on the imaging evaluation]

  20. Dose to the lung > 30Gy for a single treatment or cumulative >50 Gy
  21. Evidence of any off-target extrahepatic and liver deposition on 99mTc-MAA that cannot be corrected using angiographic techniques
  22. Cone Beam CT (CBCT) or 99mTc-MAA hepatic arterial perfusion scintigraphy shows poor tumor perfusion and/or poor tumor targeting that would lead to a dose that does not meet the liver dosing criteria as specify in the protocol
04

Study design

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

Study arms

  • Experimental
    TheraSphere

    Device: TheraSphere Y-90 glass microsphere

Interventions

  • DeviceTheraSphere Y-90 glass microsphere

    TheraSphere Y-90 glass microsphere therapy administered through the hepatic artery at index procedure.

05

What researchers measure

Primary outcomes

  1. Rate of hepatic disease control (DCR = complete response [CR], partial response [PR] or stable disease [SD]) at 3 months using the localized RECIST 1.1 criteria.

    Time frame: 3-months post index procedure

Secondary outcomes

  1. Rate of objective response (ORR = complete response [CR] or partial response [PR]) at 3 months using the localized RECIST 1.1 criteria and localized mRECIST

    Time frame: 3-months post index procedure

  2. Rate of hepatic disease control (DCR) and objective response (ORR) at 6 months using localized RECIST 1.1 and localized mRECIST criteria

    Time frame: 6-months post index procedure

  3. Best response using localized RECIST 1.1 and localized mRECIST criteria.

    Time frame: Through 6-months post index procedure

  4. Proportion of patient receiving concomitant and post BSJ019T treatment, including subsequent local and systemic anticancer treatment, surgery, intervention and best supportive care.

    Time frame: Through 6-months post index procedure

  5. Safety assessment: rate of treatment emergent adverse events (TEAEs) of any grade, rate of grade 3 or above TEAEs, rate of SAEs of any causality and rate of SAEs related to treatment with TheraSphere.

    All AEs will be evaluated using the standardized grading criteria (National Cancer Institute- Common Terminology Criteria for Adverse Events- Version 5.0 (NCI-CTCAE v 5.0))

    Time frame: Through 6-months post index procedure

  6. Technical success in delivering the Y-90 microspheres

    Technical success is determined successful if residual waste is ≦2% with optimal tumor targeting and extrahepatic deposition is not seen on post treatment imaging, and the success rate of entire of the subjects will be summarized.

    Time frame: During the index procedure

  7. Health-related quality of life (HRQoL) using EQ-5D questionnaires at regular intervals

    Time frame: Baseline, 1-, 3- and 6-months post treatment

  8. Health-related quality of life (HRQoL) using FACT-G questionnaires at regular intervals

    Time frame: Baseline, 1-, 3- and 6-months post treatment

  9. Overall survival

    Time frame: Through study completion, an average of 1 year

06

Study locations

1 of 4 sites recruiting
  • Hyogo College of Medicine Hospital
    Nishinomiya, Hyōgo 663-8501, Japan
    • Hyogo College of Medicine Hospital Clinical Trial Department · Contact · chiken02@hyo-med.ac.jp · +81-798-45-6111
    Not yet recruiting
  • Kanazawa University Hospital
    Kanazawa, Ishikawa-ken 920-8641, Japan
    Recruiting
  • Kindai University Hospital
    Sayama, Osaka 589-8511, Japan
    Not yet recruiting
  • National Cancer Center Hospital
    Chuo Ku, Tokyo 104-0045, Japan
    Not yet recruiting
07

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

08

Registry details

Key details

Study ID
NCT07377487
Lead sponsor
Boston Scientific Corporation
Responsible party
Sponsor
First posted
Jan 30, 2026
Start date
Jan 22, 2026
Primary completion
Jun 30, 2027 (estimated)
Completion
Dec 31, 2027 (estimated)
Last update
Aug 20, 2026

Study contacts

Satoru Motohashi
Contact
satoru.motohashi@bsci.com
+81(80)4619-9640
Koichiro Yamakado, MD, PhD
principal investigator · Hyogo Medical University

Oversight

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

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