rhTSH for Radioactive Iodine Remnant Ablation in Differentiated Thyroid Cancer (DTC)

September 1, 2026 updated by: Suzhou Zelgen Biopharmaceuticals Co.,Ltd

A Phase 2 Study to Evaluate the Safety and Efficacy of Recombinant Human Thyrotropin (rhTSH) for Radioactive Iodine (RAI) Remnant Ablation in Participants With Differentiated Thyroid Cancer (DTC)

This is a randomized, open, parallel controlled, multi-center clinical trial; 120 subjects were randomly assigned to the test group and the control group according to 3:1.

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

This study was conducted in patients with differentiated thyroid cancer who had undergone near-total thyroidectomy. After surgery patients were randomized to one of two methods of performing thyroid remnant ablation (use of radioiodine to remove any remaining thyroid tissue). One group of patients who took thyroid hormone medicine and were euthyroid [i.e. their thyroid stimulating hormone (TSH) levels are normal], and received injections of Thyrogen (0.9 mg daily on two consecutive days) followed by oral radioiodine. The second group of patients did not take thyroid hormone medicine so that they were hypothyroid (i.e. their TSH levels were high), and were given oral radioiodine. All patients received the same amount of radioactive iodine (30mCi±1.5mCi or 1.11GBq of 131I). Approximately 9 months later, whole body scans were performed on all patients to learn whether the thyroid remnants had been successfully ablated.

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.
123

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.
  • Phase 2

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.
  • Name: Yansong Lin, PhD
  • Phone Number: +86-010-69156114
  • Email: linys@pumch.cn

Study Locations

  • China
    • Beijing Municipality
      • Beijing, Beijing Municipality, China, 100730
        • Peking Union Medical College Hospital

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 to 75 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Pathological diagnosis of differentiated thyroid cancer, including papillary thyroid cancer (including papillary carcinoma follicular subtype), follicular thyroid cancer, and Hurthle cell thyroid cancer;
  • Patients who were at 18~75 years old (male or female).
  • Patients with a total or near-total thyroidectomy within 12 weeks prior to enrollment and plan to performing radioactive iodine((131)Ⅰ) thyroid remnant ablation.
  • Serum TSH ≤ 0.5 mU/L；
  • Women of childbearing age are HCG-negative;
  • Low iodine diet before enrollment for more than 4 weeks;
  • Patients are voluntarily enrolled, and written informed consent forms can be used for treatment and visits as required by the program.

Exclusion Criteria:

  • Any significant clinical and laboratory abnormalities (eg, severe cardiopulmonary disease, hepatic insufficiency, renal function Incomplete, congestive heart failure, advanced lung disease or advanced cardiovascular and cerebrovascular disease, active infection);
  • Patients who have used any water-soluble radiographic contrast agent intravenously, underwent intrathecal iodine angiography or gallbladder iodine imaging within 3 months before administration;
  • Taken/eaten within 4 weeks prior to administration Drugs/foods that affect iodine uptake or metabolism, such as multivitamins, glucocorticoids, diuretics, lithium, thiouracil, tazobactam, algae, iodine (except thyroid hormone replacement therapy);
  • Before administration Stroke, unstable angina (CCS class II or higher), atrial fibrillation or medication (within beta blocker or digoxin) within 6 months Patients with a history of arrhythmia;
  • Pregnant or lactating women;
  • Patients who are allergic to rhTSH and its excipients;
  • Patients with positive infection-related tests : Includes hepatitis C、syphilis and AIDS;
  • Participated in any drug or medical device clinical trial within 1 month prior to the trial.

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: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

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: Test group
The test group of patients who took thyroid hormone medicine and were euthyroid [i.e. their thyroid stimulating hormone (TSH) levels are normal], and received injections of Thyrogen (0.9 mg daily on two consecutive days) followed by oral radioiodine.
Drug: Recombinant Human Thyroid Stimulating Hormone for Injection(rhTSH)
rhTSH: 0.9 mg IM daily on two consecutive days;radioactive iodine: 30mCi±1.5mCi or 1.11GBq of 131I oral
Other Names:
  • radioactive iodine
Other: radioactive iodine
radioactive iodine: 30mCi±1.5mCi or 1.11GBq of 131I oral
Experimental: Control group
The control group of patients did not take thyroid hormone medicine so that they were hypothyroid (i.e. their TSH levels were high,TSH≥30mU/L), and were given oral radioiodine.
Other: radioactive iodine
radioactive iodine: 30mCi±1.5mCi or 1.11GBq of 131I oral

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
Ablation success rate by Diagnostic Whole Body Scan (DxWBS)
Time Frame: at week 36
In the THW state (TSH≥30mU/L), DxWBS showed the proportion of subjects who did not see radioactive iodine uptake in the thyroid gland.
at week 36

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
Serum thyroglobulin (Tg) levels
Time Frame: at week 36
In the THW state (TSH≥30mU/L), the proportion of patients with Tg levels <1ng/mL and neck B-ultrasound negative during rhTSH stimulation accounted for all subjects.
at week 36
Adverse Event
Time Frame: up to week 40 ± 7 day
Classification and degree of adverse events
up to week 40 ± 7 day

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.
Suzhou Zelgen Biopharmaceuticals Co.,Ltd

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: Yansong Lin, PhD, Peking Union Medical College Hospital

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.
November 23, 2020

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, 2022

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, 2022

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).
June 23, 2020

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.
June 24, 2020

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.
June 25, 2020

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.
September 4, 2026

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.
September 1, 2026

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.
September 1, 2026

More Information

Terms related to this study

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.
  • ZGTSH002

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

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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