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CompletedNCT01551498ASAPUpdated Nov 2, 2015

Evaluating the Dietary Supplement Anatabloc in Thyroid Health-ASAP (Antabloc Supplementation Autoimmune Prevention)

A Phase 2 interventional study of Anatabloc Supplement and Placebo in Thyroiditis, Autoimmune, sponsored by Rock Creek Pharmaceuticals, Inc.. Completed at 9 sites in United States. Open to participants aged 18 Years to 70 Years. Per ClinicalTrials.gov, last updated 2015-11-02.

Sponsored by Rock Creek Pharmaceuticals, Inc. · Phase 2, Interventional, and Treatment

Phase
Phase 2
Study type
Interventional
Enrollment
165
Allocation
Randomized
Ages
18 Years to 70 Years
Sex
All
01

Study summary

This is a study to evaluate the safety, tolerability, and potential effects of Anatabloc dietary supplementation on antithyroid autoantibodies, thyroid structure, and thyroid function in subjects with autoimmune thyroiditis.

Read the detailed description

This is a 5-visit, 12-week, double-blind, randomized, placebo-controlled, parallel-group study.

02

Conditions studied

  • Thyroiditis, Autoimmune

Keywords

  • Hashimoto Disease
  • Thyroiditis
03

In context

Thyroiditis, Autoimmune

27 studies on the registry are indexed under Thyroiditis, Autoimmune; 4 are open to participants now.

This study's enrollment of 165 is above the median of 70 across 19 interventional studies indexed under Thyroiditis, Autoimmune.

Browse Thyroiditis, Autoimmune studies →

Lead sponsor

Rock Creek Pharmaceuticals, Inc. is the lead sponsor of 6 studies on the registry; none are open to participants now.

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

04

Who can participate

Ages eligible
18 Years to 70 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

  • adults 18-70 years of age
  • having positive antibodies against thyroid peroxidase
  • having sonographic evidence consistent with a diagnosis of Hashimoto's thyroiditis

Exclusion criteria

Exclusion Criteria:

  • having evidence of end-stage thyroiditis
  • being a current smoker or smokeless tobacco user
  • be taking systemic , interferon-alpha, anti-CD20 antibody, or antibody
  • be taking any medication for treatment of thyroiditis other than L-thyroxine or equivalent
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.

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.

PD-1, PD-L1 and checkpoint inhibitors

PD-1, PD-L1 and CTLA-4 are proteins that act as brakes on the immune system. Checkpoint inhibitors, such as pembrolizumab or nivolumab, block them so the immune system can attack a cancer.

PD-L1 can also be measured in a tumour sample. Some scores count stained tumour cells only (TPS); others also count certain immune cells (CPS). The study names the score and the minimum it uses.

Autoimmune disease

A condition in which the immune system attacks the body’s own tissues, such as rheumatoid arthritis, lupus, psoriasis, type 1 diabetes or inflammatory bowel disease.

Immunotherapy studies often leave out active autoimmune disease, and some name exceptions, such as thyroid disease on replacement hormone. Check the exceptions this study lists.

05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Investigator)
Enrollment
165 participants (actual)

Study arms

  • Placebo comparator
    Placebo

    subject takes one oral placebo lozenge, three times per day

    Dietary Supplement: Placebo

  • Active comparator
    Anatabloc Supplement

    subject takes one oral Supplement lozenge, three time per day

    Dietary Supplement: Anatabloc Supplement

Interventions

  • Dietary supplementAnatabloc Supplement

    Product, as mint-flavored lozenges (3 mg anatabine per lozenge), to be taken 3 times each day

  • Dietary supplementPlacebo

    Placebo, as mint flavored lozenges, to be taken 3 times each day

06

What researchers measure

Primary outcomes

  1. Numbers of subjects experiencing adverse effects as a measure of safety

    Collected data on the numbers and types of any adverse effects related to the use of Anatabloc by subjects

    Time frame: 3 months

Secondary outcomes

  1. Measured changes in markers of autoimmune thyroiditis: changes in blood levels of anti-thyroid auto-antibodies, and changes in the volume and vascularization of the thyroid

    To determine if dietary supplementation with Anatabloc has an effect on antithyroid autoantibody levels, thyroid structure, and/or thyroid function in subjects with autoimmune thyroiditis

    Time frame: 3 months

07

Study locations

9 sites
  • Metabolic Research Institute, Inc.
    West Palm Beach, Florida 33401, United States
  • Florida Medical Clinic, P.A.
    Zephyrhills, Florida 33542, United States
  • Robert J. Becker, M.D., LTD
    La Grange, Illinois 60561, United States
  • Associated Endocrinologists, P.C.
    West Bloomfield, Michigan 48322, United States
  • New Jersey Physicians, LLC
    Clifton, New Jersey 07012, United States
  • Texas Diabetes & Endocrinology
    Austin, Texas 78731, United States
  • North Texas Endocrine Center
    Dallas, Texas 75231, United States
  • Research Institute of Dallas
    Dallas, Texas 75231, United States
  • Texas Diabetes & Endocrinology
    Round Rock, Texas 78681, United States
08

References and documents

Publications

  • Schmeltz LR, Blevins TC, Aronoff SL, Ozer K, Leffert JD, Goldberg MA, Horowitz BS, Bertenshaw RH, Troya P, Cohen AE, Lanier RK, Wright C 4th. Anatabine supplementation decreases thyroglobulin antibodies in patients with chronic lymphocytic autoimmune (Hashimoto's) thyroiditis: a randomized controlled clinical trial. J Clin Endocrinol Metab. 2014 Jan;99(1):E137-42. doi: 10.1210/jc.2013-2951. Epub 2013 Dec 20. PubMed 24178792 ↗
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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Nov 2, 2015, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT01551498
Lead sponsor
Rock Creek Pharmaceuticals, Inc.
Responsible party
Sponsor
First posted
Mar 12, 2012
Start date
Mar 2012
Primary completion
Jan 2013
Completion
Feb 2013
Last update
Nov 2, 2015

Study contacts

Maria Varga, MD
study director · Star Scientific, Inc

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Oct 2015. You cannot join it, but the record below documents what was studied.

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