Application of IV 99mTc-tilmanocept for Imaging of Macrophage-specific Inflammation

NCT ID: NCT03523130

Last Updated: 2021-02-26

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

9 participants

Study Classification

OBSERVATIONAL

Study Start Date

2018-05-03

Study Completion Date

2020-10-30

Brief Summary

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The purpose of this study is to evaluate uptake of intravenously administered 99mTc-tilmanocept using single photon emission computed tomography (SPECT/CT) scanning in individuals with HIV and individuals without HIV.

Detailed Description

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People living with HIV (PLWH) have an increased risk of cardiovascular disease (CVD) compared to individuals without HIV. Increased systemic immune activation and arterial inflammation are thought to contribute to this increased risk by affecting the highly inflammatory process of atherosclerotic plaque formation and progression. This study will evaluate whether intravenous administration of a macrophage-specific imaging agent, 99mTc-tilmanocept, followed by SPECT/CT scanning can permit quantification of aortic 99mTc-tilmanocept uptake, reflective of aortic macrophage-specific inflammation among participants with HIV. We will also compare aortic 99mTc-tilmanocept uptake in participants with HIV to participants without HIV. Immunology parameters such as markers of immune activation and traditional CVD parameters will be assessed in relation to imaging assessments.

Conditions

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HIV

Study Design

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Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Study Groups

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HIV-infected

Imaging

Intervention Type DIAGNOSTIC_TEST

Macrophage-specific inflammation

non-HIV-infected

Imaging

Intervention Type DIAGNOSTIC_TEST

Macrophage-specific inflammation

Interventions

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Imaging

Macrophage-specific inflammation

Intervention Type DIAGNOSTIC_TEST

Eligibility Criteria

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Inclusion Criteria

* men and women, ages 18 to 80, with documented HIV infection
* current use of antiretroviral therapy (ART), with no changes to regimen within last 3 months


-men and women, ages 18 to 80, without HIV infection

Exclusion Criteria

* pregnancy or breastfeeding
* known active opportunistic infection requiring ongoing medical therapy (not including Hepatitis B/C)
* CD4 count \< 50 cells/mm3
* history of myocardial infarction,acute coronary syndrome, or coronary artery stenting or surgery
* stable or unstable angina
* recent and/or current treatment with prescription, systemic steroids or anti-inflammatory/immune suppressant medical therapies
* current use of statin or use of statin for \> 1 month within the last 6 months
* known allergy to dextrans and/or DTPA and/or radiometals
* eGFR \< 60 ml/min/1.73 m2 calculated by CKD-EPI
* known severe allergy to iodinated contrast media
* contraindication to nitroglycerin
* significant radiation exposure (\>2 CT angiograms) received within the past 12 months
* reported active illicit drug use
* concurrent enrollment in another research study judged by the study investigators to interfere with the current study

Non-HIV-infected participant:


* pregnancy or breastfeeding
* history of myocardial infarction, acute coronary syndrome, or coronary artery stenting or surgery
* stable or unstable angina
* recent and/or current treatment with prescription, systemic steroids or anti-inflammatory/immune suppressant medical therapies
* current use of statin or use of statin for \> 1 month within the last 6 months
* known allergy to dextrans and/or DTPA and/or radiometals
* eGFR \< 60 ml/min/1.73 m2 calculated by CKD-EPI
* known severe allergy to iodinated contrast media
* contraindication to nitroglycerin
* significant radiation exposure (\>2 CT angiograms) received within the past 12 months
* reported active illicit drug use
* concurrent enrollment in another research study judged by the study investigators to interfere with the current study
Minimum Eligible Age

18 Years

Maximum Eligible Age

80 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Massachusetts General Hospital

OTHER

Sponsor Role lead

Responsible Party

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Steven K. Grinspoon, MD

Professor of Medicine, Harvard Medical School

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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Massachusetts General Hospital

Boston, Massachusetts, United States

Site Status

Countries

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United States

Other Identifiers

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2018P000146

Identifier Type: -

Identifier Source: org_study_id

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