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Metastatic Breast CancerPhase 2B-TREUHNCT03787303

Study of Euthyroid Hypothyroxinemia in Metastatic Breast Carcinoma

A Phase 2 study testing Triiodothyronine (T3) in people with Metastatic Breast Cancer and Thyroid Dysfunction, run by Aultman Health Foundation at 1 site in United States.

Terminated

Stopped early. The study ended before it was planned to and will not resume.

Official record
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Trial summary

Up to one third of breast cancer patients have hypothyroidism or hyperthyroidism. L-thyroxine (T4), or Synthroid, is the most commonly prescribed agent for the management of hypothyroidism in the US. Read more about this study

Who is it for?
Ages 18 to 105 years
Conditions the study is for
Metastatic Breast Cancer, Thyroid Dysfunction
What is being tested?
Triiodothyronine (T3)
Type of treatment
Pill or oral medicine
Could I receive a placebo?
No, everyone receives an active treatment
How many people
7 participants
Where
1 siteUnited States
Study dates
1 Mar 2019to 9 Mar 2022
Phase
Phase 2
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 105 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Age greater than or equal to 18
  • Male or female with diagnosis of metastatic breast carcinoma and documented history of hypothyroidism .
  • TSH level within normal range at baseline
  • Life expectancy estimated > 3 months
  • Ability and willingness to provide informed consent

Who cannot join

  • Life expectancy estimated to be less than 3 months
  • Is currently pregnant or intends to become pregnant during the duration of the study
  • Active angina, New York Heart Association (NYHA) advanced [Class III/IV] congestive heart failure, or uncontrolled cardiac arrhythmia within 6 months of enrollment
  • History of thyrotoxicosis
  • History of adrenal insufficiency
  • Hypersensitivity to any active or extraneous constituents in Triiodothyronine (T3)/liothyronine sodium

Trial locations and contacts

1 site in 1 country.

United States1 site
  • Aultman Medical Group Hematology and Oncology

    Canton, Ohio, 44710

Other trials in United States

About this study

Official title: A Single Arm Phase II Pilot Study of Euthyroid Hypothyroxinemia in Metastatic Breast Carcinoma

Up to one third of breast cancer patients have hypothyroidism or hyperthyroidism. L-thyroxine (T4), or Synthroid, is the most commonly prescribed agent for the management of hypothyroidism in the US. However, there are data suggesting that triiodothyronine (T3) may have benefits in preventing disease progression over l-thyroxine (T4).

Read the detailed description

It is estimated that there are approximately 155,000 living with metastatic breast cancer in the US and the number is estimated to increase over the next years (SEER data). Although their median survival has improved over the last 2 decades from 17 months to approximately 24 months attributed to newer treatments, there is an ongoing need for additional strategies and research to improve survival and quality of life.

Many studies have explored the connection between hypothyroidism and hyperthyroidism and breast cancer with varied results ranging up to one third prevalence. Low Triiodothyronine (T3) and elevated Thyroid-Stimulating Hormone (TSH) levels have been detected in newly diagnosed breast cancer patients. Other studies have suggested that some of the common symptoms reported by breast cancer survivors such as fatigue and depression can be attributed to subclinical hypothyroidism.

L-thyroxine (T4) is the most commonly prescribed agent for the management of hypothyroidism in the US. However, there are data suggesting that T4 is a potent pro-oncogenic agent. Proposed mechanisms include stimulation of mitogenesis, angiogenesis and resistance to apoptosis, opposition of anti-PDL-1 and radiation effects. It has been postulated that the avbeta3integrin that is universally expressed on cancer cells harbors a thyroid hormone receptor and T4 interacts with it.

Triiodothyronine (T3) on the other hand, is significantly less oncogenic and less mitogenic and is downstream of T4 which is a T3 pro-hormone. Therefore, exogenous supplementation of T3 would decrease the T4 levels creating the desired state of euthyroid hypothyroxinemia.

The rationale of this study is to replace L-thyroxine (T4) with Triiodothyronine (T3) in hypothyroid patients with metastatic breast carcinoma while they continue to receive standard systemic therapy, titrating the dose to achieve a state of euthyroid hypothyroxinemia which is turn would result in a lower risk of disease progression and improved survival by lowering the concentration of T4.

Being tested
Triiodothyronine (T3)
Medical subject headings
Breast Neoplasms

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Triiodothyronine (T3)Drug

    Also called liothyronine sodium

    Participants will have their L-thyroxine (T4) discontinued and Triiodothyronine (T3)/liothyronine sodium initiated at 3: 1 and titrated.

Study groups in NCT03787303
Study groupRoleWhat they receive
Triiodothyronine (T3)ExperimentalFollowing discontinuation of L-thyroxine (T4), triiodothyronine (T3) will be initiated at a 3:1 ratio. The dose will be titrated by the investigator to maintain levels of free T4 < 50% of normal range while maintaining a euthyroid state. Triiodothyronine (T3) tablets for oral administration will be prescribed once or twice daily depending on the total dose. Treatment duration will be approximately 9 months during which time the subjects will continue to be treated and monitored as usual for their metastatic breast cancer. During the study period and at the conclusion of the study period, there will be continuous evaluations of the disease status and thyroid status with the option of resuming the original thyroid replacement or continuation of the triiodothyronine (T3).
Receives: Drug: Triiodothyronine (T3)

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Number of Participants With Progression-free Survival at 12 Months Based Upon Clinical and Radiological Assessments Completed as Part of Routine Care

    To prospectively evaluate the progression-free survival in hypothyroid patients with metastatic breast carcinoma who are rendered euthyroid and hypothyroxinemic. Progression is defined using Response Evaluation Criteria in Solid Tumors Criteria (RECIST v1.1), as a 20% increase in the nadir sum of the longest diameter (SLD) of target lesions, or unequivocal progression (overall level of substantial worsening) in existing non-target lesions, or the appearance of one or more new lesions.

    Measured: 12 months

Secondary outcomes (4)
  1. Number of Patients With Both Metastatic Breast Cancer and Hypothyroidism in All Screened Patients.

    To quantitate the prevalence of hypothyroidism in metastatic breast cancer patients at a community oncology practice.

    Measured: Study duration, planned was 48 months but actual was 36 months [March 1, 2019 to March 9, 2022] due to premature closure due to planned relocation of the PI.

  2. Measurement of Quality of Life Total Score Across Time Using Validated FACT-B Questionnaire

    Functional Assessment of Cancer Therapy - Breast (FACT-B) Total Score comprised of Physical Well Being (PWB), Social Well Being (SWB), Emotional Well Being (EWB), Functional Well Being (FWB), and Breast Cancer Subscale (BCS). Range is 0-148. A higher score indicates higher quality of life. Missing scores were handled by prorating values.

    Measured: Baseline, 3, 6, 9, and 12 months

  3. Measurement of Energy Level Across Time Using FACT-B Question.

    Functional Assessment of Cancer Therapy - Breast (FACT-B) Lack of energy on 5 point Likert scale as measured on FACT-B Physical Well-being subscale. Score of 0 indicates no lack of energy with score of 4 indicating total lack of energy.

    Measured: Baseline, 3, 6, 9, 12 months

  4. Time to Achieve Euthyroid Hypothyroxinemia State

    To study the average time required to achieve euthyroid hypothyroxinemia state in qualifying patients. Thyroid function laboratory testing was performed at baseline and then at every 4 weekly intervals until 12 weeks then every 3 monthly thereafter, unless thyroid-stimulating hormone (TSH) was abnormal. If a normal TSH level was not achieved by the 12 week visit, repeat TSH measurements were ordered every 4-6 weeks until the TSH value was within the laboratory normal reference range. Initial euthyroid state defined by number of days between initiation of triiodothyronine (T3) and documentation of first normal TSH value.

    Measured: Number of days between initiation of triiodothyronine (T3) and documentation of first normal TSH value for each participant, assessed up to 12 months

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted26 Dec 2018
  2. Study start1 Mar 2019
  3. Primary completion9 Mar 2022
  4. Study completion9 Mar 2022

Why it stopped: Relocation of Principal Investigator

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 2
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Model description
Triiodothyronine (T3) - IND Exempt
Masking
None (open label)
Enrolment
7 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT03787303
Sponsor's protocol ID
2018.08.ST
Acronym
B-TREUH
Status last verified
May 2022
First submitted
12 Dec 2018
Last updated
13 May 2022
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing Triiodothyronine (T3) in people with Metastatic Breast Cancer and Thyroid Dysfunction, run by Aultman Health Foundation at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 5 inclusion and 6 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: stopped early, as of the sponsor's last update on 13 May 2022. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 13 May 2022). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Number of Participants With Progression-free Survival at 12 Months Based Upon Clinical and Radiological Assessments Completed as Part of Routine Care (time frame: 12 months). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 13 May 2022.

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