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A Study to Assess the Safety and Efficacy of Oral Armour Thyroid Compared to Synthetic T4 for the Treatment of Primary Hypothyroidism in Adult Participants

Phase 2
Recruiting
Conditions
Hypothyroidism
Interventions
Registration Number
NCT06345339
Lead Sponsor
AbbVie
Brief Summary

This study will evaluate the efficacy and safety of Armour Thyroid treatment compared with synthetic T4 in subjects who have primary hypothyroidism and are currently stabilized (i.e., in-range thyroid-stimulating hormone \[TSH\]) on synthetic T4 treatment. This study will also therefore evaluate the efficacy and safety of dose conversion from synthetic T4 therapy to Armour Thyroid therapy.

Detailed Description

Not available

Recruitment & Eligibility

Status
RECRUITING
Sex
All
Target Recruitment
2800
Inclusion Criteria
  • Have a diagnosis of primary hypothyroidism made >= 12 months prior to Screening.
  • Be on continuous thyroid replacement therapy of synthetic T4 for primary hypothyroidism for at least 12 months immediately prior to the Screening Visit.
  • Be on a stable FDA-approved daily dose of synthetic T4 prior to the Screening visit, and must be taking synthetic T4 dose of at least 25 mcg at Screening visit. Must enter the study using the same stable dose to determine dose conversion.
  • Documentation of 1 in-range thyroid-stimulating hormone (TSH) (i.e., within 0.45 - 4.12 mIU/L, inclusive) at Screening and at least 1 additional in range TSH (i.e., within 0.45 - 4.12 mIU/L, inclusive) taken at a minimum of 6 weeks and a maximum of 12 months prior to Screening.
Exclusion Criteria
  • Any clinical condition or previous surgery that might affect the absorption, distribution, biotransformation, or excretion of Armour Thyroid or synthetic T4.
  • History of alcohol or other substance abuse within the previous 6 months prior to the Screening.
  • Known or suspected allergy or intolerance to any ingredients of Armour Thyroid, including its excipients, synthetic T4, other thyroid replacement medications, or pork products.

Study & Design

Study Type
INTERVENTIONAL
Study Design
PARALLEL
Arm && Interventions
GroupInterventionDescription
Group 1Armour ThyroidParticipants will receive Armour Thyroid for up to 81 weeks.
Group 2Armour ThyroidParticipants will alternate between Armour Thyroid and synthetic T4 for up to 81 weeks.
Group 2LevothyroxineParticipants will alternate between Armour Thyroid and synthetic T4 for up to 81 weeks.
Primary Outcome Measures
NameTimeMethod
Percentage of Participants who Achieve Thyroid-Stimulating Hormone (TSH) ResponseWeek 55

TSH response is defined as TSH values falling within 0.45 to 4.12 mIU/L (inclusive). TSH response will be determined at Week 55 and at a prior visit with no out-of-range TSH values in between (response rate is tested against a specified non-inferiority margin).

Number of Participants with Adverse Events (AEs)Up to approximately 90 weeks

An AE is defined as any untoward medical occurrence in a patient or clinical investigation in which a participant is administered a pharmaceutical product which does not necessarily have a causal relationship with this treatment.

Secondary Outcome Measures
NameTimeMethod
Percentage of Participants who Achieve TSH ResponseWeek 55

TSH response is defined as TSH values falling within 0.45 to 4.12 mIU/L. TSH response will be determined at Week 55 and at a prior visit with no out-of-range TSH values in between (response rate is tested against a specified non-inferiority margin \[stricter than the one used in the Primary Outcome Measure\]).

Frequency of Dose Titrations During the Double-Blind (DB) Period Among Participants who Achieved TSH Response at the End of the DB PeriodWeek 55

Frequency of dose titrations (0,1,2...) during the DB period among participants who achieved TSH response at the end of the DB period.

Number of Participants Needing Altered Dose Conversion from Synthetic T4 to Armour ThyroidUp to approximately 29 weeks

Number of participants needing altered dose conversion from synthetic T4 to Armour Thyroid.

Trial Locations

Locations (137)

St. Louis University /ID# 262375

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Saint Louis, Missouri, United States

Diabetes and Endocrinology Specialists /ID# 259068

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Chesterfield, Missouri, United States

Omega Clinical Research /ID# 260162

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Metairie, Louisiana, United States

Tufts Medical Center /ID# 262974

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Boston, Massachusetts, United States

Metro Detroit Endocrinology Center /ID# 260862

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Dearborn, Michigan, United States

Michigan Healthcare Professionals /ID# 260859

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Farmington Hills, Michigan, United States

Circle Health Diabetes and Endocrine Center /ID# 270461

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Dracut, Massachusetts, United States

NECCR PrimaCare Research, LLC /ID# 256531

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Fall River, Massachusetts, United States

Washington University-School of Medicine /ID# 262391

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Saint Louis, Missouri, United States

Mercy Research - Springfield /ID# 262385

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Springfield, Missouri, United States

Elite Clinical Research Center /ID# 256782

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Flint, Michigan, United States

University of Missouri Hospital /ID# 262562

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Columbia, Missouri, United States

Jefferson City Medical Group /ID# 257099

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Jefferson City, Missouri, United States

Southern New Hampshire Diabetes and Endocrinology /ID# 257841

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Nashua, New Hampshire, United States

Albany Medical College- Endocrinology Washington Extension /ID# 256794

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Albany, New York, United States

Billings Clinic /ID# 258316

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Billings, Montana, United States

Methodist Physicians Clinic /ID# 259276

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Omaha, Nebraska, United States

Mercury Street Medical /ID# 259632

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Butte, Montana, United States

Northern Nevada Endocrinology /ID# 259646

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Reno, Nevada, United States

NYC Research /ID# 258662

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New York, New York, United States

Research Foundation of SUNY - University of Buffalo /ID# 261019

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Buffalo, New York, United States

Palm Research Center /ID# 256131

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Las Vegas, Nevada, United States

Endocrine Assc Long Island PC /ID# 257357

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Smithtown, New York, United States

Cleveland Clinic - Cleveland /ID# 262392

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Cleveland, Ohio, United States

Thomas Jefferson University Hospital /ID# 256834

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Philadelphia, Pennsylvania, United States

Physician's East Endocrinology /ID# 256491

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Greenville, North Carolina, United States

Lucas Research /ID# 256127

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Morehead City, North Carolina, United States

Accellacare - Salisbury /ID# 257019

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Salisbury, North Carolina, United States

Diabetes and Endocrinology Associates of Stark County Inc /ID# 256751

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Canton, Ohio, United States

Accellacare Wilmington /ID# 256744

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Wilmington, North Carolina, United States

Lynn Institute of Norman /ID# 256785

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Norman, Oklahoma, United States

Diabetes & Endocrinology Consultants of Pennsylvania /ID# 259064

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Feasterville-Trevose, Pennsylvania, United States

Lynn Institute of Oklahoma City /ID# 263141

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Oklahoma City, Oklahoma, United States

Guthrie Robert Packer Hospital /ID# 261838

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Sayre, Pennsylvania, United States

Jefferson Health - Roosevelt Boulevard /ID# 256837

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Philadelphia, Pennsylvania, United States

University of Tennessee Health Science Center /ID# 259825

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Memphis, Tennessee, United States

Trial Management Associates - Myrtle Beach /ID# 259800

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Myrtle Beach, South Carolina, United States

Brusco, Corpus Christi, TX /ID# 256746

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Corpus Christi, Texas, United States

Carolina Endocrine Associates Llc /ID# 259640

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North Charleston, South Carolina, United States

Chattanooga Medical Research /ID# 257631

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Chattanooga, Tennessee, United States

Lifedoc Research /ID# 262975

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Memphis, Tennessee, United States

Mid State Endocrine Associates /ID# 259641

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Nashville, Tennessee, United States

Texas Diabetes and Endocrinology - South Austin /ID# 255723

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Austin, Texas, United States

North TX Endocrine Center /ID# 255737

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Dallas, Texas, United States

Research Institute Dallas /ID# 256126

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Dallas, Texas, United States

Academy of Diabetes, Thyroid and Endocrine /ID# 255735

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El Paso, Texas, United States

Diabetes and Thyroid Center of Ft. Worth /ID# 256781

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Fort Worth, Texas, United States

Endocrine and Psychiatry Cente /ID# 259631

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Houston, Texas, United States

Tekton Research - Irving /ID# 260988

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Irving, Texas, United States

Juno Research /ID# 259238

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Houston, Texas, United States

Biopharma Informatic - Houston - Business Center Drive /ID# 256149

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Houston, Texas, United States

Southern Endocrinology Associates /ID# 256795

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Mesquite, Texas, United States

PlanIt Research, PLLC /ID# 259221

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Houston, Texas, United States

MultiCare Institute for Research & Innovation /ID# 255954

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Tacoma, Washington, United States

BRCR Global Puerto Rico /ID# 268231

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San Juan, Puerto Rico

Texas Valley Clinical Research /ID# 261476

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Weslaco, Texas, United States

The University of Vermont Medical Center /ID# 256533

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South Burlington, Vermont, United States

Richmond VA Medical Center /ID# 262386

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Richmond, Virginia, United States

MultiCare Rockwood Clinic /ID# 255951

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Spokane, Washington, United States

Clinical Research Investigator Group, LLC /ID# 263177

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Bayamon, Puerto Rico

Virginia Endocrinology Research /ID# 259623

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Chesapeake, Virginia, United States

ISIS Clinical Research Center /ID# 263182

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Guaynabo, Puerto Rico

Mindful Medical Research /ID# 263184

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San Juan, Puerto Rico

Bryan Health Pine Lake Campus /ID# 259638

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Lincoln, Nebraska, United States

Carteret Medical Group /ID# 256869

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Morehead City, North Carolina, United States

Lucas Research /ID# 257061

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Morehead City, North Carolina, United States

Palmetto Clinical Research - Summerville /ID# 258845

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Summerville, South Carolina, United States

PMG Research of Knoxville /ID# 256854

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Knoxville, Tennessee, United States

Texas Diabetes and Endocrinology - Central Austin /ID# 255728

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Austin, Texas, United States

Texas Diabetes and Endocrinology /ID# 255722

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Round Rock, Texas, United States

Northeast Clinical Research of San Antonio, LLC /ID# 256868

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San Antonio, Texas, United States

Diabetes & Glandular Disease Clinic /ID# 255734

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San Antonio, Texas, United States

Consano Clinical Research, LLC /ID# 256138

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Shavano Park, Texas, United States

Advanced Research Institute /ID# 259821

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Ogden, Utah, United States

Salem VA Medical Center /ID# 262387

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Salem, Virginia, United States

Rainier Clinical Research /ID# 255802

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Renton, Washington, United States

GCM Medical Group, PSC /ID# 263183

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San Juan, Puerto Rico

Central Research Associates /ID# 255719

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Birmingham, Alabama, United States

UAB Hospital /ID# 262565

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Birmingham, Alabama, United States

Kaiser San Diego Dept Endocrinology, SCPMG /ID# 262552

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Bonita, California, United States

Facey Medical Foundation - Burbank /ID# 262104

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Burbank, California, United States

John Muir Medical Center /ID# 257103

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Concord, California, United States

Diagnamics Inc. /ID# 262680

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Encinitas, California, United States

Providence - St. Jude Medical Center /ID# 256520

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Fullerton, California, United States

NorCal Medical Research /ID# 256512

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Greenbrae, California, United States

Velocity Clinical Research - Huntington Park /ID# 259044

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Huntington Park, California, United States

Scripps Whittier Diabetes Institute /ID# 259215

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La Jolla, California, United States

Facey Medical Foundation /ID# 260863

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Mission Hills, California, United States

Hoag Memorial Hospital Presbyterian /ID# 260990

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Newport Beach, California, United States

Diabetes Associates Medical Group /ID# 256949

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Orange, California, United States

Western University of Health Sciences /ID# 262183

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Pomona, California, United States

Research at Mills-Peninsula Medical Center - Sutter Health /ID# 258825

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San Mateo, California, United States

Care Access - Santa Clarita /ID# 262573

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Santa Clarita, California, United States

Facey Medical Foundation - Valencia /ID# 262102

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Santa Clarita, California, United States

The Lundquist Institute at Harbor-UCLA Medical Center /ID# 262572

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Torrance, California, United States

Diablo Clinical Research /ID# 261329

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Walnut Creek, California, United States

San Fernando Valley Health Institute /ID# 257363

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West Hills, California, United States

New England Research Associates - Bridgeport /ID# 262184

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Bridgeport, Connecticut, United States

West Orange Endocrinology /ID# 256139

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Ocoee, Florida, United States

Innovative Research of West Florida /ID# 257356

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Clearwater, Florida, United States

ALL Medical Research /ID# 256748

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Cooper City, Florida, United States

Northeast Research Institute (NERI) /ID# 261841

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Fleming Island, Florida, United States

Northeast Research Institute (NERI) /ID# 261846

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Fleming Island, Florida, United States

The Center for Diabetes and Endocrine Care /ID# 255721

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Fort Lauderdale, Florida, United States

Encore Medical Research LLC /ID# 256758

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Hollywood, Florida, United States

East Coast Institute For Research - LaVilla - West Monroe Street /ID# 256972

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Jacksonville, Florida, United States

The University of Florida Heal /ID# 257361

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Jacksonville, Florida, United States

East Coast Research - Jacksonville /ID# 256971

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Jacksonville, Florida, United States

Encore Research Group-Jacksonville Center for Clinical Research /ID# 256147

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Jacksonville, Florida, United States

Baptist Health Research Institute /ID# 260989

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Jacksonville, Florida, United States

South Florida Wellness & Clinic /ID# 256513

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Margate, Florida, United States

Ocean Blue Medical Research Center, Inc /ID# 260438

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Miami Springs, Florida, United States

Med Research of Florida /ID# 257837

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Miami, Florida, United States

Adult Medicine of Lake County - Mount Dora /ID# 257371

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Mount Dora, Florida, United States

Suncoast Clinical Research Pasco County /ID# 257018

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New Port Richey, Florida, United States

Suncoast Clinical Research - Palm Harbor /ID# 256741

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Palm Harbor, Florida, United States

Comprehensive Medical & Research Center /ID# 261678

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Plantation, Florida, United States

Northeast Research Institute - St. Augustine /ID# 261857

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Saint Augustine, Florida, United States

Metabolic Research Inst /ID# 255729

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West Palm Beach, Florida, United States

Grady Clinical Research Center Grady Memorial Hospital /ID# 258419

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Atlanta, Georgia, United States

Atlanta Diabetes Associates /ID# 255736

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Atlanta, Georgia, United States

East Coast Institute for Research - Canton /ID# 256974

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Canton, Georgia, United States

Columbus Regional Research Ins /ID# 255738

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Columbus, Georgia, United States

Physicians Research Associates, LLC /ID# 255675

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Lawrenceville, Georgia, United States

East Coast Institute for Research - Macon /ID# 256529

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Macon, Georgia, United States

Endocrine Research Solutions /ID# 256784

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Roswell, Georgia, United States

Pacific Diabetes & Endocrine Center /ID# 259030

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Honolulu, Hawaii, United States

Rocky Mountain Clinical Research, LLC /ID# 256753

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Idaho Falls, Idaho, United States

Northwestern University Feinberg School of Medicine /ID# 260677

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Chicago, Illinois, United States

West Broadway Clinic /ID# 256756

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Council Bluffs, Iowa, United States

Iowa Diabetes and Endocrinology Research Center /ID# 256750

🇺🇸

West Des Moines, Iowa, United States

Cotton O'Neil Diabetes & Endocrinology /ID# 256749

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Topeka, Kansas, United States

University of Louisville Hospital /ID# 262568

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Louisville, Kentucky, United States

L-MARC Research Center /ID# 255733

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Louisville, Kentucky, United States

Pennington Biomedical Research Center /ID# 262390

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Baton Rouge, Louisiana, United States

Nola Care Clinical Research /ID# 260145

🇺🇸

Metairie, Louisiana, United States

The Ohio State University Wexner Medical Center - CarePoint East /ID# 264061

🇺🇸

Columbus, Ohio, United States

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