NCT02013479

Brief Summary

Our aim is to investigate if selenium supplementation versus placebo adjuvant to the standard treatment with levothyroxine (LT4) in patients with autoimmune thyroiditis will lead to improved thyroid specific quality of life, and reduced autoimmune activity. The trial will include 472 participants (2 X 236) from four clinical trial sites.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
415

participants targeted

Target at P75+ for not_applicable

Timeline
Completed

Started Jun 2014

Longer than P75 for not_applicable

Geographic Reach
1 country

4 active sites

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

December 3, 2013

Completed
14 days until next milestone

First Posted

Study publicly available on registry

December 17, 2013

Completed
6 months until next milestone

Study Start

First participant enrolled

June 1, 2014

Completed
8.8 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

March 23, 2023

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

March 23, 2023

Completed
Last Updated

October 31, 2023

Status Verified

October 1, 2023

Enrollment Period

8.8 years

First QC Date

December 3, 2013

Last Update Submit

October 30, 2023

Conditions

Outcome Measures

Primary Outcomes (1)

  • Thyroid related quality of life

    Measured in composite score based on the ThyPRO questionnaire

    12 months after initation of intervention

Secondary Outcomes (2)

  • Thyroid peroxidase antibody concentration (TPO-Ab)

    12 months after initation of intervention

  • Levothyroxine (LT4) dosage

    12 months after initation of intervention

Study Arms (2)

SelenoPRECISE

EXPERIMENTAL

SelenoPRECISE

Dietary Supplement: SelenoPRECISE

Placebo

PLACEBO COMPARATOR

Placebo

Dietary Supplement: Placebo

Interventions

SelenoPRECISEDIETARY_SUPPLEMENT

Produced by Pharma Nord ApS, Vejle, Denmark

SelenoPRECISE
PlaceboDIETARY_SUPPLEMENT

Produced by Pharma Nord ApS, Vejle, Denmark

Placebo

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Age ≥18 years.
  • Serum-TPO-Ab ≥ 100 IU/mL measured within the last 12 months.
  • Receiving LT4 treatment.
  • \- Serum-TSH ≥ 4.0 mU/L measured prior to treatment initiation
  • Written informed consent.

You may not qualify if:

  • Previous diagnosis of toxic nodular goitre, Graves' hyperthyroidism, post-partum thyroiditis or thyroid associated orbitopathy (TAO).
  • Previous radioiodine therapy, anti-thyroid treatment or thyroid surgery.
  • Previous diagnosis of non-melanoma skin cancer.
  • Morbidity, rendering the participant unable to process patient reported outcomes or receive intervention during the trial.
  • Systemic immunomodulatory medication.
  • Other medication known to affect thyroid function.
  • Pregnancy, breastfeeding, or planned pregnancy within 18 months.
  • Allergy towards the components in the selenium or placebo pills.
  • Intake of selenium supplementation ≥ 55 μg/d.
  • Unable to read or understand Danish.
  • Lack of informed consent

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (4)

Clinic of Medical Endocrinology, Copenhagen University Hospital, Rigshospitalet

Copenhagen, Denmark

Location

Department of Endocrinology and Gastroenterology, Bispebjerg Hospital

Copenhagen, Denmark

Location

Department of Internal Medicine, Hospital of South West Denmark

Esbjerg, Denmark

Location

Department of Endorcrinology and Metabolism, Odense University Hospital

Odense, Denmark

Location

Related Publications (2)

  • Larsen C, Winther KH, Cramon PK, Rasmussen AK, Feldt-Rasmusssen U, Knudsen NJ, Bjorner JB, Schomburg L, Demircan K, Chillon TS, Gram J, Hansen SG, Brandt F, Nygaard B, Watt T, Hegedus L, Bonnema SJ. Selenium supplementation and placebo are equally effective in improving quality of life in patients with hypothyroidism. Eur Thyroid J. 2024 Jan 1;13(1):e230175. doi: 10.1530/ETJ-23-0175. Online ahead of print.

  • Winther KH, Watt T, Bjorner JB, Cramon P, Feldt-Rasmussen U, Gluud C, Gram J, Groenvold M, Hegedus L, Knudsen N, Rasmussen AK, Bonnema SJ. The chronic autoimmune thyroiditis quality of life selenium trial (CATALYST): study protocol for a randomized controlled trial. Trials. 2014 Apr 9;15:115. doi: 10.1186/1745-6215-15-115.

MeSH Terms

Conditions

Thyroiditis, Autoimmune

Condition Hierarchy (Ancestors)

ThyroiditisThyroid DiseasesEndocrine System DiseasesAutoimmune DiseasesImmune System Diseases

Study Officials

  • Steen J Bonnema, MD, DMSc

    Odense University Hospital

    PRINCIPAL INVESTIGATOR
  • Laszlo Hegedüs, MD, DMSc

    Odense University Hospital

    PRINCIPAL INVESTIGATOR
  • Kristian H Winther, MD

    Odense University Hospital

    PRINCIPAL INVESTIGATOR
  • Torquil Watt, MD, PhD

    Rigshospitalet, Denmark

    PRINCIPAL INVESTIGATOR
  • Per Cramon, MD

    Rigshospitalet, Denmark

    PRINCIPAL INVESTIGATOR
  • Ulla Feldt-Rasmussen, MD, DMSc

    Rigshospitalet, Denmark

    PRINCIPAL INVESTIGATOR
  • Åse K Rasmussen, MD, DMSc

    Rigshospitalet, Denmark

    PRINCIPAL INVESTIGATOR
  • Jeppe Gram, MD, PhD

    Esbjerg Hospital - University Hospital of Southern Denmark

    PRINCIPAL INVESTIGATOR
  • Nils J Knudsen, MD, DMSc

    Bispebjerg Hospital, Denmark

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
QUADRUPLE
Who Masked
PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR INVESTIGATOR
PI Title
Chief Physician

Study Record Dates

First Submitted

December 3, 2013

First Posted

December 17, 2013

Study Start

June 1, 2014

Primary Completion

March 23, 2023

Study Completion

March 23, 2023

Last Updated

October 31, 2023

Record last verified: 2023-10

Locations