99mTc-MIRC208 SPECT/CT Imaging for HER2-Positive Cancer Patients

A Novel VHH-Based Radiotracer, 99mTc-MIRC208, for SPECT/CT Imaging of HER2-Positive Cancer Patients

This is an open-labeled Single-Photon Emission Computed Tomography/Computed Tomography(SPECT/CT) study to investigate the clinical value of 99mTc-MIRC208 in HER2 status measurement of cancer patients. A single dose of 14.8 MBq/kg body weight will be injected intravenously. The whole-body SPECT/CT examination will be performed 2 h post-injection and the visual and semiquantitative methods will be used to assess the SPECT/CT images.

Study Overview

• Status: Recruiting
• Conditions: Cancer
• Intervention / Treatment: Drug: 99mTc-MIRC208

Detailed Description

HER2 is an important therapeutic target for cancer. Immunohistochemistry(IHC) and fluorescence in situ hybridization (FISH) are two standard approaches for HER2 status determination and selection of patients who will undergo the anti-HER2 therapy. However, the intra- and intratumor heterogeneity over space and time make them even more challenging to assess HER2 status. HER2-specific nuclear molecular imaging is a potential tool, which has ability to detect HER2 receptor in primary and metastatic lesions noninvasively and address the problems encountered by biopsy dependent tests. VHH, also referred to as nanobody, is a distinct type of antibody fragment derived from camelid heavy chain-only antibody. Compared with classical antibodies, VHHs have smaller size (about 15 kDa), greater thermal and chemical stability, which promoting their application in field of cancer theranostic.

In our recent preclinical studies, Principal Investigator developed a novel VHH-based radiotracer, 99mTc-MIRC208, for the SPECT/CT imaging of HER2 status in tumors. In this clinical study, Principal Investigator aim to investigate whether 99mTc-MIRC208 could be used for HER2 measurement in cancer patients. 99mTc-MIRC208 SPECT/CT examination will be performed in patients with HER2-positive tumors. The SUV of 99mTc-MIRC208 in tumors will be calculated. Meanwhile, Principal Investigator will investigate the ability of 99mTc-MIRC208 for the patients selection for anti-HER2 therapy.

• Study Type: Interventional
• Enrollment (Anticipated): 200
• Phase: Not Applicable

Contacts and Locations

Study Locations

• China
  • Beijing
    • Beijing, Beijing, China, 100142
      • Recruiting
      • HUA ZHU

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 80 years (Adult, Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

1. Aged # 18 years old; ECOG 0 or 1;
2. Patients with HER2 positive or suspicious positive tumors;
3. Has at least one measurable target lesion according to CT or MRI;
4. Life expectancy ≥ 12 weeks.

Exclusion Criteria:

1. Significant hepatic or renal dysfunction;
2. Is pregnant or ready to pregnant;
3. Cannot keep their states for half an hour;
4. Refused to join the clinical research;
5. Suffering from claustrophobia or other mental disorders;
6. Any other situation that researchers considered it unsuitable to participate in the trial.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Diagnostic
• Allocation: N/A
• Interventional Model: Single Group Assignment
• Masking: None (Open Label)

Number of Arms

1

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: 99mTc-MIRC208 SPECT/CT scan; The cancer patients will be injected with14.8 MBq/kg body weight, and 2h later, SPECT/CT scan will be performed.	Drug: 99mTc-MIRC208; 99mTc-MIRC208 SPECT/CT: after intravenous injection of 14.8 MBq/kg body weight of quality-controlled 99mTc-MIRC208 2 h, a Siemens Symbia T16 SPECT/CT scan will be performed within 1 h.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
SUV	The uptake of the tracer in the primary and metastatic tumor lesions by measuring standardized uptake value (SUV) on PET/CT	3 years

Collaborators and Investigators

• Sponsor: Peking University Cancer Hospital & Institute

Study record dates

Study Major Dates

• Study Start (Actual): September 1, 2020
• Primary Completion (Anticipated): August 30, 2024
• Study Completion (Anticipated): August 30, 2024

Study Registration Dates

• First Submitted: October 16, 2020
• First Submitted That Met QC Criteria: October 16, 2020
• First Posted (Actual): October 19, 2020

Study Record Updates

• Last Update Posted (Actual): March 29, 2023
• Last Update Submitted That Met QC Criteria: March 27, 2023
• Last Verified: March 1, 2023

More Information

Terms related to this study

• Keywords: HER2; SPECT/CT; VHH
• Other Study ID Numbers: 2020KT81

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No