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CompletedNCT06735040Updated Dec 17, 2024

Effect of Photobiomodulation Therapy in Patients With Hashimoto's Thyroiditis

An interventional study of Photobiomodulation Therapy and Sham in Hashimoto Thyroiditis and Thyroiditis, sponsored by Istanbul Medipol University Hospital. Completed at 1 site in Turkey. Open to participants aged 18 Years to 65 Years. Per ClinicalTrials.gov, last updated 2024-12-17.

Sponsored by Istanbul Medipol University Hospital · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Registered 3 years 10 months after the study started (first participant enrolled Jan 2021, registered Dec 2024).
Phase
Not applicable
Study type
Interventional
Enrollment
60
Allocation
Randomized
Ages
18 Years to 65 Years
Sex
All
01

Study summary

The standard lifelong treatment for Hashimoto's thyroiditis (HT), a chronic autoimmune disease, is levothyroxine (LT4) therapy. Despite LT4 replacement therapy, patients continue to experience persistent fatigue, deterioration in psychological and general well-being. Our study was conducted to investigate the effects of photobiomodulation therapy (PMBT) combined with LT4 replacement therapy on fatigue and behavioural status in patients with HT.

Read the detailed description

Photobiomodulation therapy (PMBT) induces a wide range of molecular, cellular and tissue-based therapeutic effects through a biostimulation process by inducing a photochemical reaction in the cell. Some investigations show useful effects of this treatment with regard to thyroid function, autoimmunity and vascularisation in patients with Hashimoto's thyroiditis (HT). However, little is known about the efficacy of PMBT on neuromuscular symptoms and behavioural status. Therefore, in this study we aim to contribute the present literature on PMBT and to determine the clinical efficacy of PMBT. To the best of our knowledge, this study is the first paper to discuss the symptomatic efficacy of PMBT in patients with HT. Here, we investigate the effects of PMBT applied in combination with LT4 treatment on fatigue, sleep quality and behavioural status in people diagnosed with HT.

02

Conditions studied

  • Hashimoto Thyroiditis
  • Thyroiditis

Keywords

  • Anxiety
  • Depression
  • Fatigue
  • Photobiomodulation Therapy
  • Low Level Laser Therapy
03

In context

Hashimoto Disease

53 studies on the registry are indexed under Hashimoto Disease; 13 are open to participants now.

This study's enrollment of 60 is close to the median of 60 across 31 interventional studies indexed under Hashimoto Disease.

Browse Hashimoto Disease studies →

Lead sponsor

Istanbul Medipol University Hospital is the lead sponsor of 366 studies on the registry; 46 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 65 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • The study included patients over the age of eighteen years who were diagnosed with HT by a specialist physician and followed up with LT4 treatment.

Exclusion criteria

Exclusion Criteria:

  • Exclusion criteria were acute infection, use of , immunostimulants and drugs that interfere with the production, transport and metabolism of thyroid hormones (e.g. , lithium and amiodarone), thyroid nodules, tracheal stenosis, history of serious illness (e.g. cancer, ischaemic coronary artery disease, stroke, renal and liver failure), history of exposure to ionising radiation or neoplasia in the cervical region, and thyroid surgery; cancer, ischaemic coronary artery disease, stroke, renal and hepatic failure), history of exposure to ionising radiation or neoplasia in the cervical region, history of malignancy and thyroid surgery, hypothyroidism caused by postpartum thyroiditis, pregnancy and lactation, neurological and psychiatric disorders.
Terms in these criteria, in plain language(3)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Immunosuppression

A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.

Read whether the line is about a condition or about medicines, and which medicines and doses it means.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

Cancer (malignancy)

Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.

Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Outcomes assessor)
Enrollment
60 participants (actual)

Study arms

  • Active comparator
    Photobiomodulation Therapy Group

    All patients diagnosed with HT in the study were receiving LT4 treatment. In the PMBT group, in addition to thyroid hormone replacement therapy, a continuous wave GaAIAs type diode laser device (Intelect® Mobile Laser, Model No: 2779, Production Year: 2016; Chattanooga Group) was also applied to the thyroid gland in a 0.07 cm² treatment area. Continuous mode at 850 nm wavelength, 100 mW output power, 1.43 W/cm2 power density and 28.57 J/cm2 energy density (28.57 J/cm2 =100 Mw x 20 s/0.07) were used during the photobiomodulation therapy.

    Other: Photobiomodulation Therapy

  • Sham comparator
    Sham Group

    In the sham PMBT group, the probe was placed similarly to the treatment group. The screen of the laser device was active; however, the energy was set to 0 J and the power to 0 Mw, and the same procedures were also performed.

    Other: Sham

Interventions

  • OtherPhotobiomodulation Therapy

    Before each treatment session, the borders of the thyroid gland were marked with ultrasound by an endocrinology specialist. Eight target points (superior, mediolateral, inferior borders of the right and left thyroid lobes, right and left side of the isthmus) were demarked with a surgical pen. PMBT was applied to the marked areas on the thyroid gland, which were approximately 1 cm apart from each other.

    Also known as: Low Level Laser Therapy

  • OtherSham

    In the sham PMBT group, the probe was placed similarly to the treatment group. The screen of the laser device was active; however, the energy was set to 0 J and the power to 0 Mw, and the same procedures were also performed.

06

What researchers measure

Primary outcomes

  1. Fatigue Level

    Fatigue level in all patients was assessed by Fatigue Impact Scale (FIS) and Fatigue Severity Scale (FSS). The FIS is a forty-item scale indicating the consequences of fatigue on daily life such that it includes cognitive, physical and psychosocial subscales. The sum of the subscales ranges from 0 to 40 (physical and cognitive) and 0-80 (psychosocial); a higher score indicates a more severe impact of fatigue in daily life. FSS assesses the degree of physical fatigue over the past week and includes nine items. Patients indicate how much they agree or disagree with the statements for each item on a seven-point Likert scale. FSS scores ≥ 4.0 indicate clinically relevant fatigue.

    Time frame: 3 months

  2. Feeling of General Fatigue

    General fatigue feeling of the individuals were evaluated by Visual Analogue Scale (VAS).Individuals were asked to mark their fatigue level on the scale. '0' means 'not tired at all' and '10'means 'very tired'.

    Time frame: 3 months

Secondary outcomes

  1. Sleep Quality

    The Pittsburgh Sleep Quality Index (PSQI) was used to assess sleep quality based on participants' sleep experiences in the past week. The PSQI is a self-administered questionnaire that has been proven to be a valid and reliable tool for measuring sleep quality and quantity. The PSQI consists of a total of seven components and nineteen questions, including subjective sleep quality, sleep latency, sleep duration, habitual sleep efficiency, sleep disturbances, use of sleeping medication and daytime dysfunction. The sum of the seven dimensional components gives global scores ranging from 0 to 21, with higher scores indicating poorer sleep quality. Those having score above 5 are considered as to have "poor sleep quality" and those having score 5 and below are considered as to have "good sleep quality" .

    Time frame: 3 months

  2. Sleepiness

    Epworth Sleepiness Scale (ESS) was used to assess sleepiness. The ESS is a short, easy-to-administer questionnaire that subjectively assesses daytime sleepiness. The probability of falling asleep in the eight-day condition is determined by a scoring from 0 to 3 (0=no chance of napping, 1=slight chance of napping, 2=moderate chance of napping, 3=high chance of napping). The ESS score is the sum of eight item scores and ranges from 0 to 24. Higher ESS scores indicate greater daytime sleepiness.

    Time frame: 3 months

  3. Anxiety

    The inventory consists of twenty-one items describing subjective, somatic or panic-related anxiety symptoms, respectively. Self-reports are based on a four-point Likert scale ranging from "not at all" to "severe" regarding the experience of this symptom in the past month. Higher scores indicate more severe levels of anxiety.

    Time frame: 3 months

  4. Depression

    The Beck Depression Inventory (BDI) is a twenty-one-item self-assessment scale that measures symptoms of depression. Each item is scored from 0 to 3; the total score ranges from 0 to 63. It was stated that those having scores as seventeen and above were in the group at risk of depression. Depression levels: 0-9, minimal; 10-16, mild; 17-29, moderate; 30-63, severe.

    Time frame: 3 months

07

Study locations

1 site
  • Sümeyye TUNÇ
    Istanbul, Turkey
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Dec 17, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06735040
Responsible party
Sümeyye TUNÇ (Assistant Professor, Istanbul Medipol University Hospital) — Principal investigator
First posted
Dec 16, 2024
Start date
Jan 28, 2021
Primary completion
Jan 15, 2023
Completion
Feb 15, 2023
Last update
Dec 17, 2024

Study contacts

Şükriye Leyla ALTUNTAŞ
study director · Medipol University
Murat ATMACA
study chair · Medipol University

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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