Skip to content

TheraSphere Post-Approval Study to Calculate the Radiation-absorbed Dose of Tc-99m MAA.

TheraSphere Post-approval Study to Calculate the Radiation-absorbed Dose of Technetium-99m Macroaggregated Albumin (Tc-99m MAA) to the Whole Body and Non-liver Critical Organs.

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT05233098
Enrollment
6
Registered
2022-02-10
Start date
2022-04-04
Completion date
2023-06-14
Last updated
2025-03-06

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Hepatocellular Carcinoma

Keywords

Carcinoma, Carcinoma, Hepatocellular, Neoplasms, Glandular and Epithelial, Neoplasms by Histologic Type, Neoplasms, Adenocarcinoma, Liver Neoplasms, Digestive System Neoplasms, Neoplasms by Site, Digestive System Diseases, Liver Diseases

Brief summary

The TheraSphere Post-Approval Study is a post-market, prospective, single-arm, open-label, observational study to support the use of TheraSphere for the treatment of hepatocellular carcinoma (HCC).

Detailed description

Every patient being treated with TheraSphere needs to have a screening procedure with the administration of a radioactive product named Tc-99m MAA (called pre-treatment mapping). This screening procedure aims to determine if the patient can be treated with TheraSphere. The purpose of this study is to better understand the dose of radiation that is absorbed by the body and the risk of Tc-99m MAA to the whole body and other organs around the liver. The study will determine the amount of Tc-99m MAA that stays in the body and organs up to 24 hours after the administration.

Interventions

DEVICETechnetium-99m macroaggregated albumin (Tc-99m MAA)

Patients who are being evaluated for TheraSphere administration.

Sponsors

Boston Scientific Corporation
Lead SponsorINDUSTRY

Study design

Observational model
COHORT
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
21 Years to No maximum

Inclusion criteria

1. Patients 21 years and older 2. Written informed consent 3. Patients who receive Tc-99m MAA while being evaluated for TheraSphere treatment.

Exclusion criteria

1. Patients who are contraindicated for TheraSphere treatment. 2. Patients who are contraindicated for Tc-99m MAA per the applicable Package Insert. 3. Patients who do not receive Tc-99m MAA during pre-treatment Y-90 mapping

Design outcomes

Primary

MeasureTime frameDescription
Delivered Activity of Tc-99m MAA (MBq) for Whole BodyImmediately followingTo provide imaging data calculating radiation-delivered dose of Tc-99m MAA to the whole body.
Delivered Activity of Tc-99m MAA (MBq) for Non-Liver Critical OrgansImmediately followingTo provide imaging data to calculate the radiation-delivered dose of Tc-99m MAA to the whole body and to potential irradiated non-liver critical organs.
Delivered Activity of Tc-99m MAA (MBq) for Non-Liver Critical Organs.4 hours +/- 2 hoursTo provide imaging data to calculate the radiation-delivered dose of Tc-99m MAA to the whole body and to potential irradiated non-liver critical organs.
Delivered Activity of Tc-99m MAA (MBq) for Whole Body.18-24 hoursTo provide imaging data calculating radiation-delivered dose of Tc-99m MAA to the whole body following injection.
Absorbed Dose of Tc-99m MAA (mGy) for Whole Body.OverallTo provide imaging data calculating radiation-absorbed dose of Tc-99m MAA to the whole body.
Absorbed Dose of Tc-99m MAA (mGy) for Non-Liver Critical OrgansOverallTo provide imaging data calculating radiation-absorbed dose of Tc-99m MAA to Non-Liver Critical Organs.
Effective Dose of Tc-99m MAA (mSv) Whole BodyOverallTo provide imaging data calculating radiation-effective does of Tc-99m MAA to Non-Liver Critical Organs.
Effective Dose of Tc-99m MAA (mSv/mBq) for Whole BodyOverallTo provide data calculating radiation-effective dose of Tc-99m MAA to Whole Body.
Equivalent Dose of TC-99m MAA (mSV) for Non-Liver Critical OrgansOverallTo provide imaging data calculating radiation-equivalent dose of Tc-99m MAA to Non-Liver Critical Organs.

Countries

United States

Participant flow

Recruitment details

This study was conducted at one clinical study site, NWU in Chicago, IL USA. Six patients consented and enrolled. Patient considered enrolled at time of consent per protocol. Patient 001 withdrew consent prior to the Tc-99m MAA procedure. Five patients received protocol required imaging after Tc-99m MAA injections. Patient # Date of Enrollment: 1. Apr 4, 2022 2. Feb 4, 2023 3. Mar 4, 2023 4. Mar 14, 2023 5. May 10, 2023 6. Jun 6, 2023

Participants by arm

ArmCount
Clinical Cohort
Patients enrolled in the study will have 3 imaging scans taken after Tc-99m MAA injection. The final scan will occur between 18 and 24 hours after Tc-99m MAA injection. Technetium-99m macroaggregated albumin (Tc-99m MAA): Patients who are being evaluated for TheraSphere administration.
6
Total6

Baseline characteristics

CharacteristicClinical Cohort
Age, Categorical
<=18 years
0 Participants
Age, Categorical
>=65 years
5 Participants
Age, Categorical
Between 18 and 65 years
1 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
0 Participants
Race (NIH/OMB)
Black or African American
0 Participants
Race (NIH/OMB)
More than one race
1 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
White
5 Participants
Region of Enrollment
United States
5 participants
Sex: Female, Male
Participants.
Female
1 Participants
Sex: Female, Male
Participants.
Male
5 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
0 / 5
other
Total, other adverse events
0 / 5
serious
Total, serious adverse events
0 / 5

Outcome results

Primary

Absorbed Dose of Tc-99m MAA (mGy) for Non-Liver Critical Organs

To provide imaging data calculating radiation-absorbed dose of Tc-99m MAA to Non-Liver Critical Organs.

Time frame: Overall

Population: Patient who are being evaluated for TheraSphere administration.

ArmMeasureValue (MEAN)
Clinical CohortAbsorbed Dose of Tc-99m MAA (mGy) for Non-Liver Critical Organs4.812 mGy
Primary

Absorbed Dose of Tc-99m MAA (mGy) for Whole Body.

To provide imaging data calculating radiation-absorbed dose of Tc-99m MAA to the whole body.

Time frame: Overall

Population: Patients who are being evaluated for TheraSphere administration.

ArmMeasureValue (MEAN)
Clinical CohortAbsorbed Dose of Tc-99m MAA (mGy) for Whole Body.10.970 mGy
Primary

Delivered Activity of Tc-99m MAA (MBq) for Non-Liver Critical Organs

To provide imaging data to calculate the radiation-delivered dose of Tc-99m MAA to the whole body and to potential irradiated non-liver critical organs.

Time frame: Immediately following

Population: Patients who are being evaluated for TheraSphere administration.

ArmMeasureValue (MEAN)
Clinical CohortDelivered Activity of Tc-99m MAA (MBq) for Non-Liver Critical Organs6.986 MBq
Primary

Delivered Activity of Tc-99m MAA (MBq) for Non-Liver Critical Organs

To provide imaging data to calculate radiation delivered dose of Tc-99m MAA to the whole body and to potential irradiated non-liver critical organs.

Time frame: 18-24 hours

Population: Patients who are being evaluated for TheraSphere administration.

ArmMeasureValue (MEAN)
Clinical CohortDelivered Activity of Tc-99m MAA (MBq) for Non-Liver Critical Organs0.662 MBq
Primary

Delivered Activity of Tc-99m MAA (MBq) for Non-Liver Critical Organs.

To provide imaging data to calculate the radiation-delivered dose of Tc-99m MAA to the whole body and to potential irradiated non-liver critical organs.

Time frame: 4 hours +/- 2 hours

Population: Patients who are being evaluated for TheraSphere administration.

ArmMeasureValue (MEAN)
Clinical CohortDelivered Activity of Tc-99m MAA (MBq) for Non-Liver Critical Organs.8.640 MBq
Primary

Delivered Activity of Tc-99m MAA (MBq) for Whole Body

To provide imaging data to calculate the radiation-delivered dose of Tc-99m MAA to the whole body.

Time frame: 4 hours +/- 2 hours

Population: Patients who are being evaluated for TheraSphere administration.

ArmMeasureValue (MEAN)
Clinical CohortDelivered Activity of Tc-99m MAA (MBq) for Whole Body27.978 MBq
Primary

Delivered Activity of Tc-99m MAA (MBq) for Whole Body

To provide imaging data calculating radiation-delivered dose of Tc-99m MAA to the whole body.

Time frame: Immediately following

Population: Patients who are being evaluated for TheraSphere administration.

ArmMeasureValue (MEAN)
Clinical CohortDelivered Activity of Tc-99m MAA (MBq) for Whole Body67.322 MBq
Primary

Delivered Activity of Tc-99m MAA (MBq) for Whole Body.

To provide imaging data calculating radiation-delivered dose of Tc-99m MAA to the whole body following injection.

Time frame: 18-24 hours

Population: Patients who are being evaluated for TheraSphere administration.

ArmMeasureValue (MEAN)
Clinical CohortDelivered Activity of Tc-99m MAA (MBq) for Whole Body.1.694 MBq
Primary

Effective Dose of Tc-99m MAA (mSv/mBq) for Whole Body

To provide data calculating radiation-effective dose of Tc-99m MAA to Whole Body.

Time frame: Overall

Population: Patients who are being evaluated for TheraSphere administration.

ArmMeasureValue (MEDIAN)
Clinical CohortEffective Dose of Tc-99m MAA (mSv/mBq) for Whole Body0.008 mSv/mBq
Primary

Effective Dose of Tc-99m MAA (mSv) Whole Body

To provide imaging data calculating radiation-effective does of Tc-99m MAA to Non-Liver Critical Organs.

Time frame: Overall

Population: Patients who are being evaluated for TheraSphere administration.

ArmMeasureValue (MEAN)
Clinical CohortEffective Dose of Tc-99m MAA (mSv) Whole Body0.666 mSv
Primary

Equivalent Dose of TC-99m MAA (mSV) for Non-Liver Critical Organs

To provide imaging data calculating radiation-equivalent dose of Tc-99m MAA to Non-Liver Critical Organs.

Time frame: Overall

Population: Patients who are being evaluated for TheraSphere administration.

ArmMeasureValue (MEAN)
Clinical CohortEquivalent Dose of TC-99m MAA (mSV) for Non-Liver Critical Organs0.384 mSv

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026