Assessing Benefits of Near Infrared Autofluorescence (NIRAF) Detection for Identifying Parathyroid Glands During Total Thyroidectomy

August 6, 2025 updated by: Paul Gauger, University of Michigan
This study will see if the use of near infrared autofluorescence (NIRAF) detection with a 'Parathyroid Eye (PTeye)' for identifying parathyroid glands (PGs) during total thyroidectomy (TTx) is better than surgeon's detection alone. It compares risk, benefits and outcomes in TTx patients where NIRAF detection with PTeye for parathyroid identification is either used or not used.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

Prior to data collection, it was determined some additional outcome measures collected by the primary site would not be relevant to the trial for participating sites such as this site. Those outcomes were removed from this record.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
114

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • United States
    • Michigan
      • Ann Arbor, Michigan, United States, 48109
        • The University of Michigan

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Patients with thyroid disease who will be undergoing total thyroidectomy (includes patients who have undergone a prior neck exploration for parathyroid disease or other but have an intact thyroid gland).
  • Patients with persisting thyroid disease and will be undergoing re-operative or completion thyroidectomy.

Exclusion Criteria:

  • Pregnant women
  • Patients with concurrent parathyroid and thyroid disease
  • Patients with incidental enlarged parathyroid discovered during thyroidectomy procedure.
  • Patients undergoing thyroid lobectomy or partial thyroidectomy

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Prevention
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: PTeye
The surgeon will use the PTeye as an intraoperative tool to identify if a suspect tissue is a parathyroid or not, during the total thyroidectomy procedure.
Device: PTeye
The surgeon will first take 5 baseline NIRAF measurements on the thyroid gland (or neck muscle, if thyroid is absent) using the disposable sterile fiber probe that is connected to the PTeye console, as per device functionality requirements.
No Intervention: Standard of Care
The surgeon will not use the PTeye and will proceed with the total thyroidectomy as usual, while relying solely on her/his surgical experience in identifying the parathyroid glands during the operations.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
The Average Number of Parathyroid Glands Identified (Experimental Group: Glands Identified With Naked Eye + NIRAF; Control Group: Glands Identified With Naked Eye) Per Patient
Time Frame: Immediate (During total thyroidectomy procedure)
Overall number of parathyroid glands identified (Experimental Group: Glands identified with naked eye + NIRAF; Control Group: Glands identified with naked eye)
Immediate (During total thyroidectomy procedure)

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Blood Parathyroid Hormone (PTH) Levels at 5-14 Days After Surgery
Time Frame: 5-14 days after surgery
Blood parathyroid hormone (PTH) levels at 5-14 days post-op
5-14 days after surgery
Blood Parathyroid Hormone (PTH) Levels at 24-48 Hours After Surgery
Time Frame: Within 24-48 hours after surgery
Blood parathyroid hormone (PTH) levels at 24-48 hours after surgery
Within 24-48 hours after surgery
Blood Calcium Levels 24-48 Hours After Surgery
Time Frame: Within 24-48 hours after surgery
Blood calcium levels 24-48 hours after surgery
Within 24-48 hours after surgery
Duration in Minutes of Surgery
Time Frame: Collected immediately following surgery
Duration of surgery (minutes)
Collected immediately following surgery
Number of Frozen Section Analysis Performed.
Time Frame: Collected immediately following surgery
Number of frozen section analysis performed. Samples of a suspected piece of parathyroid tissue were removed and analyzed to confirm whether they were actually parathyroid tissue. Results reflect the participants who were determined to have had a frozen section conducted.
Collected immediately following surgery
Number of Auto-transplanted Parathyroid Glands
Time Frame: Immediate. During total thyroidectomy procedure
Number of auto-transplanted parathyroid glands if the parathyroid gland was accidentally excised/devascularized.
Immediate. During total thyroidectomy procedure
Number of Nights Spent in the Hospital After Total Thyroidectomy
Time Frame: 0 - 4 nights after total thyroidectomy
Number of nights spent for postoperative recovery in the hospital after the surgical procedure.
0 - 4 nights after total thyroidectomy
Number of Inadvertently Resected Parathyroid Glands
Time Frame: Immediate (intraoperative) to 7-10 days after total thyroidectomy (as presented in the pathology report)
Number of inadvertently resected parathyroid glands when parathyroid tissue is found in the resected thyroid specimens. Results reflect the participants who had an inadvertently resected parathyroid gland.
Immediate (intraoperative) to 7-10 days after total thyroidectomy (as presented in the pathology report)

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
University of Michigan

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Vanderbilt University

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Paul Gauger, MD, University of Michigan

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
December 1, 2021

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
May 31, 2024

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
May 31, 2024

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
August 22, 2021

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
August 22, 2021

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
August 26, 2021

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
August 8, 2025

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
August 6, 2025

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
August 1, 2025

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • HUM00194322
  • R01CA212147 (U.S. NIH Grant/Contract)

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

Yes

product manufactured in and exported from the U.S.

Yes

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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