Hashimoto - a Surgical Disease. Total Thyroidectomy Makes Antibodies Disappear and Ameliorates Symptoms

Sponsor

Sykehuset Telemark (Other)

Overall Status

Completed

CT.gov ID

NCT02319538

Collaborator

Helse Stavanger HF (Other), Haukeland University Hospital (Other)

150

Enrollment

Location

Arms

Actual Duration (Months)

2.3

Patients Per Site Per Month

Study Details

Study Description

Brief Summary

The investigators have already proven that absolute total thyroidectomy gives elimination of anti-TPO antibodies. Our hypothesis is that this elimination also eliminates the typical Hashimoto symptoms, namely: Serious tiredness, increased need of sleep, pain in musculature and joints and dryness in eyes and mouth. The prerequisite for this effect is that the total thyroidectomy is meticulously performed. There exists no other treatment that can eliminate the antibodies. The study is randomized between operation and ordinary conservative medical treatment with thyroxine control and supplementation. The symptoms in both groups are evaluated by 5 different Quality of Life schemes, internationally approved.

Condition or Disease	Intervention/Treatment	Phase
Hashimoto's Disease	Procedure: Total thyroidectomy performed	N/A

Detailed Description

The study hypothesis is that elimination of anti-TPO antibodies ameliorates the typical Hashimoto symptoms like tiredness,increased need of sleep, pain in musculature and joints and dryness in eyes and mouth. It is necessary that the total thyroidectomy is meticulously performed. We have proven the effect on the antibodies, and we have also proven that the operation procedure can be performed without more complications like recurrent nerve damage and hypocalcemia. Neutrality is secured by randomization done by a neutral institution, laryngoscopy by neutral doctors and instructions filling out the QoL-schemes performed by non-biased study nurses.

The study runs for at least 18 months with controls every 6 months. Blood samples are taken and international approved QoL-schemes are filled in. In addition to the randomised main group a side group of patients fulfilling 2 of the 3 inclusion criteria are followed in parallel in order to elucidate the spontaneous development of the disease and showing critical values of antibodies making the symptoms turn up.

Study Design

Study Type:

Interventional

Actual Enrollment :

150 participants

Allocation:

Randomized

Intervention Model:

Parallel Assignment

Masking:

None (Open Label)

Primary Purpose:

Treatment

Official Title:

Surgical Treatment of Hashimotos Disease. Effect on Antibodies and Clinical Symptoms.

Actual Study Start Date :

Feb 13, 2012

Actual Primary Completion Date :

Jul 15, 2017

Actual Study Completion Date :

Jul 15, 2017

Arms and Interventions

Arm	Intervention/Treatment
No Intervention: Non-surgical treatment only Control arm. This arm receives standard medical hormone treatment (Thyroxine substitution) only and no surgical intervention.
Active Comparator: Total thyroidectomy performed Surgical arm.The approach for total thyroidectomy will be a complete removal of all visible, and immunological active thyroid tissue with a high accuracy, with a special focus on three sites; 1) The angle where the recurrent laryngeal nerve enters the cricothyroid membrane, 2) The pyramidal lobe and 3) The hilus where the superior vessels are entering the field. Standard Thyroxine supplementation maintained as in the control group.	Procedure: Total thyroidectomy performed Surgery combined with standard thyroxine treatment

Arm

Intervention/Treatment

No Intervention: Non-surgical treatment only

Control arm. This arm receives standard medical hormone treatment (Thyroxine substitution) only and no surgical intervention.

Active Comparator: Total thyroidectomy performed

Surgical arm.The approach for total thyroidectomy will be a complete removal of all visible, and immunological active thyroid tissue with a high accuracy, with a special focus on three sites; 1) The angle where the recurrent laryngeal nerve enters the cricothyroid membrane, 2) The pyramidal lobe and 3) The hilus where the superior vessels are entering the field. Standard Thyroxine supplementation maintained as in the control group.

Procedure: Total thyroidectomy performed

Surgery combined with standard thyroxine treatment

Outcome Measures

Primary Outcome Measures

Better outcome in Quality of Life by operation [18 months]
The patiens are followed for 18 months with blood samples and filling in Quality of Life schemes every 6 months

Secondary Outcome Measures

Lowering of antibodies (Blood samples) [18 months]
Blood samples every 6 months

Other Outcome Measures

Safety in performing absolute total thyroidectomy (recurrence nerve and long lasting hypocalcemia) [12 months]
Safety concerning the recurrence nerve and long lasting hypocalcemia. Interim analysis after 75 patients.
Interim analysis after 75 patients concerning safety (recurrent nerve control by laryngoscopy and hypocalcemia control by blood samples) [12 months]
The patients operated upon are investigated after 12 months concerning safety. The recurrent nerve control by laryngoscopy and hypocalcemia control by blood samples.

Eligibility Criteria

Criteria

Ages Eligible for Study:

18 Years and Older

Sexes Eligible for Study:

All

Accepts Healthy Volunteers:

Inclusion Criteria:

Patients referred due to typical symptoms, believed to be related to Hashimoto´s disease, but not relieved by thyroxin substitution. Optimal thyroid substitution treatment is already provided.
Anti-TPO>1000
Hypothyroidism with a need for thyroxin supplementation
Written informed consent by the patient - information particularly emphasising and quantifying the risk of complications (e.g. recurrent laryngeal nerve palsy). The patient should be informed by a medical endocrinologist as well as a surgeon.

Exclusion Criteria:

Patients <18 years of age.
Pregnancy.
Unable to comprehend information adequately to give informed consent.
General anaesthesiological contraindications.
An unexpected finding of cancer in the surgical group is not a reason for exclusion per se, but this group should be analyzed separately. It is expected that any different loading in Quality of life would bias the medically treated group.