Thyroid Disease in Pregnancy: Case Finding Versus Universal Screening
Primary outcomenumber of adverse outcomes which occur during pregnancy and in the neonatal period in patients divided in Case Finding and Universal Screening groups
Thyroid DiseasePregnancy
The Effect of Thyroid Antibodies on Female Reproductive Function and Pregnancy Outcomes
SponsorSecond Affiliated Hospital, Zhejiang University, School of Medicine
Primary outcomeIncidence rate of pregnancy complications in women with or without thyroid antibodies
Thyroiditis, Autoimmune
Effect of HCQ Combined With LT4 on LBR in Euthyroid Women With URPL and TPO-Ab
SponsorSun Yat-Sen Memorial Hospital of Sun Yat-Sen University
Primary outcomeBirth of a living child beyond 28 weeks
Recurrent Pregnancy LossEuthyroid With Thyroid Antibodies
Preconceptional Thyroid Screening and Childhood Nerocognitive Function
Primary outcomeOffspring neurocognitive assessment at 0-3 yrs
Hypothyroidism
Thyroid Hormone Replacement After Coronary Artery Bypass Grafting for Patients With Subclinical Hypothyroidism
SponsorSeoul National University Bundang Hospital
Primary outcomeA composite of MACE within 4months after surgery
Subclinical Hypothyroidism
A Randomized Controlled Trial of Thyroid Hormone Supplementation in Hemodialysis Patients
SponsorUniversity of California, Irvine
Primary outcomeHealth-Related Quality of Life (HRQOL) - Short Form 36 Physical Component Score
Thyroid; Functional DisturbanceHypothyroidismHemodialysis
Individual Dosing of Levothyroxine After Thyroidectomy
SponsorSecond Affiliated Hospital, School of Medicine, Zhejiang University
Primary outcomeeuthyroidism
Thyroid NeoplasmsHypothyroidismSurgery
Best Treatment for Women With Both (Polycystic Ovary Syndrome) PCOS and Subclinical Hypothyroidism
SponsorMuhamed Ahmed Abdelmoaty Muhamed Alhagrasy
Primary outcomePregnancy rate
PCOS (Polycystic Ovary Syndrome) of Bilateral OvariesSubclinical HypothyroidismFemale Infertility
Thyroid and Adrenocortical Hormone Replacement in Organ Donors
SponsorMedical University of South Carolina
Primary outcomeChange in Vasoactive Inotrope Score (VIS) score from beginning of active donor management until procurement.
Brain Death
Thyroid Lobectomy With or Without Levothyroxine Treatment Postoperatively
SponsorJagiellonian University
Primary outcomePrimary outcome measure was prevalence of recurrent goiter within the contralateral thyroid lobe
Recurrent Goiter
The Effects of T4 Versus T4/T3 on Psychological Distress After Total Thyroidectomy in Thyroid Cancer Patients
Primary outcomePsychological distress (depression or anxiety) assessed with HADS
Thyroid CancerDistressDepressionAnxietyFatigue
Effect of Levothyroxine on Serum Adiponectin, Insulin Resistance and Cardiovascular Risk in Patients With Hypothyroidism
SponsorAll India Institute of Medical Sciences, Bhubaneswar
Primary outcomeChange of Serum Adiponectin from baseline
Hypothyroidism
SNUH Immune Checkpoint Inhibitor-induced Hypothyroidism Recovery Trial
SponsorSeoul National University Bundang Hospital
Primary outcomeProportion of participants who maintain discontinuation of levothyroxine for at least 6 months
Hypothyroidism
Thyroxine Supplementation in Small for Gestational Age (SGA) Infants With Birth Weight <1500g and TSH 6-20 mIU/ml
SponsorShandong Provincial Hospital
Primary outcomeCognitive function evaluated by Bayley-IV
Thyroid FunctionPretermSGA and GrowthNeurodevelopment Outcome
Quality of Life After Interventional Thyroid Treatment
SponsorKlinikum Lüdenscheid
Primary outcomeThyPRO Scale Scores (0-100, Higher Scores Indicating Worse Quality of Life)
Thyroid; DeficiencyQuality of Life
Efficacy of Thyroid Hormone Replacement for Secondary Hypothyroidism Following Intracerebral Hemorrhage
SponsorPeking Union Medical College Hospital
Primary outcomeblood pressure
Intracerebral HemorrhageLow T3 SyndromeNeurocritical CareHormone Replacement Therapy
Recovery Rate in Secondary Hypothyroidism
SponsorNova Scotia Health Authority
Primary outcomePercentage of patients achieving euthyroid status
Secondary Hypothyroidism
Safety and Efficacy of Empiric Levothyroxine (LT4) Dose Increase Versus Individualized LT4 Dose Increase in Hypothyroid Women During Pregnancy
SponsorMedstar Health Research Institute
Primary outcome% of TSH values within trimester-specific goal range per patient from study enrollment to delivery
Pregnancy RelatedThyroid
Wound Complications in Head and Neck Surgery
SponsorUniversity of Michigan
Primary outcomeNumber of patients treated with Levothyroxine who develop pharyngocutaneous fistula after salvage laryngectomy
Hypothyroidism; SurgeryHead and Neck CancerWound HealLaryngeal CancerLaryngeal Fistula
Thyroid Hormone Dose Adjustment in Pregnancy
SponsorBrigham and Women's Hospital
Primary outcomeProportion of Patients in Each Treatment Arm Euthyroid Through Gestation
PregnancyHypothyroidism
Hypothyroidism, Metabolism and Quality of Life - Focus on QOL, REE, Cognitive Function and Body Composition
Primary outcomeChanges in quality of life as measured with the ThyPro questionaire
Hypothyroidism
Levothyroxine Treatment on Cardiac Function in Children With Subclinical Hypothyroidism
Primary outcomeAssessment of left ventricle systolic function
LevothyroxineCardiac FunctionChildrenSubclinical Hypothyroidism
Thyroid Hormone Replacement After Radio Iodine: Value and Efficacy
SponsorUniversity Medical Center Groningen
Primary outcomeTSH after two weeks of TH substitution
Differentiated Thyroid CancerThyroid CancerLevothyroxineLiothyronineThyroid Hormones
The Effect of Levothyroxine on Arterial Stiffness and Lipid Profile in Patients With Subclinical Hypothyroidism
SponsorAssaf-Harofeh Medical Center
Subclinical Hypothyroidism
Generic vs. Name-Brand Levothyroxine
SponsorBoston Children's Hospital
Primary outcomeThyroid Stimulating Hormone as Primary Endpoint Measured at Initiation of Study, After 8 Weeks of One Drug, and Then 8 Weeks After the Second Drug.
Congenital HypothyroidismHypothyroidism
Targeted Levothyroxine Dosing in Infants With Congenital Hypothyroidism
Primary outcomeDose Adjustments
Congenital Hypothyroidism
Metabolic Changes in Hypothyroid Patients
SponsorUniversity of Aarhus
Hypothyroidism
Hypothyroidism, Metabolism and Food Intake
Primary outcomeChanges in food intake at ad libitum meal
Hypothyroidism
Is Levothyroxine Alone Adequate Thyroid Hormone Replacement?
SponsorUniversity of Colorado, Denver
Primary outcomeChange in working memory (N-back testing) and correlation with deiodinase type 2 polymorphism
Postsurgical HypothyroidismHypothyroidism
Improving White Matter Integrity With Thyroid Hormone
SponsorUniversity of Illinois at Chicago
Primary outcomeHigh Angular Diffusion Tensor Imaging
Hypothyroidism
LISA-study : Levothyroxin in Nodular Goiter
Primary outcomeThe primary outcome measure is to compare the change in total volume of all nodules after 12 months Levothyroxin treatment to the change after 12 months of each of the reference treatments (one of the two active controls or placebo)
Goiter, Nodular
Thyroid Hormone Replacement for Subclinical Hypothyroidism
SponsorNHS Greater Glasgow and Clyde
Primary outcomeThyroid-specific quality of life - Hypothyroid symptoms and Fatigue symptoms (co-primary outcomes)
Subclinical Hypothyroidism
Effects of L-thyroxine Replacement on Serum Lipid and Atherosclerosis in Hypothyroidism
SponsorShandong Provincial Hospital
Primary outcomeRate of First cardiovascular disorder (CVD) Events, CVD Mortality and All-cause Mortality
HypothyroidismThyroid DiseasesEndocrine System Diseases
The TRUST Study - Depression Substudy
SponsorInsel Gruppe AG, University Hospital Bern
Primary outcomeChange from baseline in 15-items Geriatric Depression Scale
Subclinical HypothyroidismDepression
Levothyroxine Intervention in Pregnant Women with TSH (2.5 MIU/L-upper Limit of Reference Range) and Negative Thyroid Peroxidase Antibody
Primary outcomeRate of fetal loss
Thyroid AbnormalitiesPregnant WomanPregnancy Outcomes
Effect of L-Thyroxine on Lipid Profiles and Atherosclerosis in Subclinical Hypothyroidism
SponsorShandong Provincial Hospital
Primary outcomechange in lipid profile
HypothyroidismThyroid DiseasesEndocrine System Diseases
Effect of Thyroid Hormone Replacement on Fatigability in Untreated Older Adults With Subclinical Hypothyroidism
SponsorInsel Gruppe AG, University Hospital Bern
Primary outcomeChange from baseline in level of physical and mental fatigue as assessed by the Pittsburgh Fatigability Scale (PFS) score
Thyroid DysfunctionMental FatigueFatigue
Dosing of LT4 in Older Individuals
SponsorUniversity of Pennsylvania
Primary outcomeThyroid-Related Quality of Life Patient-Reported Outcome Quality of Life scale
Hypothyroidism
The TRUST Trial - CardioVascular Imaging ECHO
SponsorInsel Gruppe AG, University Hospital Bern
Primary outcomeDiastolic cardiac Function as measured by echocardiography
Thyroid DysfunctionAtherosclerosisHeart Failure
The TRUST Study - CardioVascular Imaging IMT
SponsorInsel Gruppe AG, University Hospital Bern
Primary outcomeCarotid Intima Media Thickness as measured by carotid ultrasound
Thyroid DysfunctionAtherosclerosisHeart Failure
Neurocognitive and Metabolic Effects of Mild Hypothyroidism
SponsorOregon Health and Science University
Primary outcomeExecutive Function
Hypothyroidism
Novel Biomarkers and Skeletal Outcomes Associated With Subclinical Thyroid Dysfunction
SponsorInsel Gruppe AG, University Hospital Bern
Primary outcomeChange in bone mineral density (BMD)
Thyroid DysfunctionBone Mineral DensityOsteoporosisFractures, Bone
Impact of Increasing Levothyroxine Dose in Ramadan for UAE Patients With Hypothyroidism
SponsorEmirates Health Services (EHS)
Primary outcomeEffects of an extra dose of L-thyroxine during the month of Ramadan
L-thyroxine
Low Dose Euthyrox in Treatments of Paraquat Intoxication.
SponsorSecond Affiliated Hospital, Zhejiang University, School of Medicine
Primary outcomeRate of death weekly
Paraquat Poisoning
Bioequivalence Study of Levothyroxine Sodium Tablets 100 mcg
Primary outcome(AUC) Area Under the Curve 0-48 for T4
Healthy
Randomized Crossover Trial for the Evaluation of the Possible Effects in the Intestine of Two Different Pharmaceutical Forms of L - Thyroxine in Patients With Primary Acquired Hypothyroidism
SponsorMeyer Children's Hospital IRCCS
Primary outcomeEffects on gut inflammation parameter (Calprotectin)
Hypothyroidism
Levothyroxine Sodium in Thyroidectomized Patients Taking Proton Pump Inhibitors
SponsorIBSA Institut Biochimique SA
Primary outcomeThyroid Stimulating Hormone (TSH)
Hypothyroidism;Postablative
Discontinuation of Levothyroxine Therapy for Patients With Subclinical Hypothyroidism
SponsorVA Office of Research and Development
Primary outcomeParticipants' Willingness to Enter the Trial
Subclinical Hypothyroidism
Type 2 Deiodinase Gene Polymorphism and the Treatment of Hypothyroidism Caused by Thyroidectomy in Thyroid Cancer Patients.
SponsorZhongshan Hospital Xiamen University
Primary outcomeTSH suppression
Thyroid Cancer, PapillaryHypothyroidism
Study of Optimal Replacement of Thyroxine in the Elderly
SponsorNewcastle-upon-Tyne Hospitals NHS Trust
Primary outcomeParticipant's acceptability of study design and willingness to enter study
Hypothyroidism
Use of Tirosint®-SOL or Tablet Formulations of Levothyroxine in Pediatric Patients With Congenital Hypothyroidism (CH)
SponsorIBSA Institut Biochimique SA
Primary outcomeLT4 Dose Required to Maintain TSH in Target Range (Unit: mcg/kg/Day)
Congenital Hypothyroidism
Thyroid Replacement Therapy in Patients With Subclinical Hypothyroidism
SponsorBeijing Chao Yang Hospital
Primary outcomeThyroid Stimulating Hormone changes
Subclinical Hypothyroidisms
Bioequivalence of Two Levothyroxine Tablet Formulations in Healthy Indian Volunteers
Primary outcomeMaximum observed concentration (Cmax) and Area under concentration-time curve [AUC (0-48)]
Hypothyroidism
Thyroid Study Type 2 Diabetes Mellitus (T2DM)
SponsorMaastricht University Medical Center
Primary outcomeThyroid hormone-induced change in whole body insulin sensitivity (change in insulin-stimulated glucose disposal) and muscle mitochondrial function
DiabetesHypothyroidism
Evaluation of the Efficacy and Safety of Levothyroxine in Brain Death Organ Donors: a Randomized Controled Trial
SponsorCentre Integre Universitaire de Sante et Services Sociaux du Nord de l'ile de Montreal
Primary outcomeStudy feasibility
Brain Dead Organ Donors
Levothyroxine Replacement With Liquid Gel Capsules vs Tablets Post-thyroidectomy
SponsorUniversity of Texas Southwestern Medical Center
Primary outcomeNumber of Patients in Each Group at Predefined Target TSH Range at 18 Weeks
Thyroid CancerPostsurgical Hypothyroidism
Use of Liquid Stable Levothyroxine in Trisomy 21 Pediatric Patients
SponsorChildren's Mercy Hospital Kansas City
Primary outcomeTolerability as Assessed by the CareCAT Tool
HypothyroidismTrisomy 21
Comparison of Levothyroxine Formulation in Hypothyroid Patients With Enteral Feeding
SponsorUniversity of California, Los Angeles
Primary outcomeChange of TSH
Hypothyroidism
Thyroid Therapy for Mild Thyroid Deficiency in Pregnancy
SponsorThe George Washington University Biostatistics Center
Primary outcomeIntellectual Function of Children at 5 Years of Age in Women Diagnosed With a) Subclinical Hypothyroidism or b) Hypothyroxinemia During the First Half of Pregnancy, or Death.
Subclinical HypothyroidismHypothyroxinemiaPregnancy
Levothyroxine as Adjuvant to a Hypocaloric Diet for the Treatment of Obesity.
SponsorFundación Pública Andaluza para la Investigación de Málaga en Biomedicina y Salud
Primary outcomeChange in body weight (kg) from baseline to Month 3
Obesity
Thyroxin Treatment in Sub Clinical Hypothyroidism, on the Apnea Hypopnea Index Score, Lipids and Highly Sensitive CRP
SponsorKing Saud University
Primary outcomeEffect of the treatment of subclinical hypothyroidism on the apnea hypopnea index (AHI) score.
Dyslipidemia
Role of Levothyroxine Supplementation in Delayed Recovery Following Cardiac Surgery
SponsorAin Shams University
Primary outcomeChange in Glasgow Coma Scale (GCS) From Intervention Initiation to ICU Discharge (Δ)
Cardiac Surgery Intensive Care TreatmentDelayed Recovery From AnaesthesiaEuthyroid Sick SyndromeCardiac Surgery Requiring Cardiopulmonary Bypass
TSH Suppression During Radiotherapy on Thyroid Site to Prevent Iatrogenic Hypothyroidism in Pediatric Cancer Patients
SponsorFondazione IRCCS Istituto Nazionale dei Tumori, Milano
Primary outcomeHypothyroidism-free survival
Hypothyroidism; Irradiation
L-Thyroxine Supplementation for Preterm Newborns Less Than 32 Weeks of Gestation With Hypothyroxinemia
SponsorCentre Hospitalier Universitaire, Amiens
Primary outcomeNeurodevelopmental outcome
Hypothyroxinemia
Supplementation of Thyroid Hormone for TSH Control in Patients With Chronic Kidney Disease Without TRR.
SponsorHospital Civil de Guadalajara
Primary outcome24 hours urine Proteinuria in patients with subclinical hypothyroidism and CKD G2-G5 without renal support therapy Randomized clinical trial of levothyroxine group versus placebo
Chronic Kidney DiseasesSubclinical Hypothyroidism
Novel Approaches to the Treatment of Hypothyroidism
Primary outcomeChanges in Total Cholesterol
Hypothyroidism
Subclinical Hypothyroidism and Mind in the Elderly
SponsorUniversidad Autonoma de Nuevo Leon
Primary outcomeChange in cognitive ability measured by NEUROPSI increase of 10 points
Subclinical Hypothyroidism
Early Levothyroxine Post Radioactive Iodine
Primary outcomeNumber of Participants With Overt Hypothyroidism
Graves' Disease
Effects of Levothyroxine on Endothelial Function of Patients With Subclinical Hypothyroidism
SponsorIsfahan University of Medical Sciences
Primary outcomeChange from baseline flow-mediated dilation at 2 months
Subclinical Hypothyroidism
A Study Evaluating the Safety and Efficacy of Hormone Replacement Therapy With ST-1891 Compared to Levothyroxine in Patients With Primary Hypothyroidism
SponsorSention Therapeutics, LLC
Primary outcomeLevothyroxine-to-ST-1891 dosing conversion factor
Hypothyroidism
A Study Evaluation the Safety and Efficacy of Hormone Replacement Therapy With North Star Compared to Levothyroxine in Patients With Primary Hypothyroidism
SponsorNeuvosyn Laboratories, LLC
Primary outcomeThe ratio of the LT4 dose (mcg/day) at screening to North Star (mg/day) at the end of the treatment period required to achieve and maintain serum thyroid-stimulating hormone (TSH) levels within the normal reference range.
Hypothyroidism
A Study of Armour® Thyroid Compared to Synthetic T4 (Levothyroxine) in Previously Hypothyroid Participants
Primary outcomePercentage of Participants With a Sustained TSH Response
HypothyroidismThyroid DiseaseEuthyroidThyroid GlandThyroid Hormones
Study of Dose Adjustment From Levothyroxine to a New Levothyroxine Sodium Test Formulation
Primary outcomePercentage of Participants That Do Not Need a Change of Dose
Hypothyroidism
T4/T3 Therapy in Hypothyroidism
SponsorUniversity of Pennsylvania
Primary outcomeThyPRO Composite QOL Scale
Hypothyroidism Primary
Study of XP-8121 For the Treatment of Adult Subjects With Hypothyroidism
SponsorXeris Pharmaceuticals
Primary outcomeDose Conversion Factor
Hypothyroidism
Levothyroxine for Non-Alcoholic Fatty Liver Disease (NAFLD)
SponsorDuke-NUS Graduate Medical School
Primary outcomeLiver fat content
Non-Alcoholic Fatty Liver DiseaseDiabetes Mellitus, Type 2
Thyroid and Glucose and Energy Metabolism
SponsorNational Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Primary outcomeInsulin-mediated Glucose Disposal Rate at Levothyroxine Treatment Phase
Thyroid Diseases
Energy Metabolism in Thyroidectomized Patients
SponsorVirginia Commonwealth University
Primary outcomeShort Term Change in Weight
Thyroid GoiterHypothyroidismThyroid Cancer
Can Levothyroxine Treatment Reduce the Development of Cardio-metabolic Disorder in Subclinical Hypothyroidism?
SponsorAin Shams University
Primary outcome: Normalization of TSH.
Subclinical hypothyroïdism
Levothyroxine Supplementation for Heart Transplant Recipients
SponsorUniversity of California, San Francisco
Primary outcomeNumber of participants who receive Levothyroxine's vasopressor use compared to number of participants who receive normal saline's vasopressor use.
Heart Transplant FailureHeart Transplant Infection
Study to Evaluate the Effect of IW-3718 on the Pharmacokinetics of Oral Contraceptive, Levothyroxine, Glyburide, and Digoxin in Healthy Adult Volunteers
SponsorIronwood Pharmaceuticals, Inc.
Primary outcomePK of EE and NET: Area Under the Plasma Concentration Versus Time Curve (AUC) From Time 0 to the Last Quantifiable Concentration (AUC0-t)
Healthy Volunteers
Compare Safety and Pharmacokinetic Properties of Surfolase Capsule(Acebrophylline 100mg) and Surfolase CR(200mg)
SponsorHyundai Pharmaceutical Co., LTD.
Primary outcomeAUCt of ambroxol
Healthy Male
Bioequivalence of Two Formulations of Levothyroxine Sodium 200 Micrograms (mcg) Under Tablet Form
SponsorMerck Healthcare KGaA, Darmstadt, Germany, an affiliate of Merck KGaA, Darmstadt, Germany
Primary outcomeBaseline Corrected Maximum Observed Plasma Concentration (Cmax[Adj]) of Levothyroxine Sodium
Healthy
A Trial Investigating the Influence of Oral Semaglutide on the Pharmacokinetics of Levothyroxine and the Influence of Co-administered Tablets on the Pharmacokinetics of Semaglutide Administered Orally in Healthy Subjects.
Primary outcomeBaseline-corrected area under the total T4 serum concentration-time curve from 0 to 48 hours after a single dose of levothyroxine
DiabetesHealthy
Fasting Study of Levothyroxine Sodium Tablets 300 mcg to Synthroid® Tablets 300 mcg
SponsorMylan Pharmaceuticals Inc
Primary outcomeBioequivalence
Healthy
Fasting Study of Levothyroxine Sodium Tablets 200 mg to Synthroid Tablets 200 mg
SponsorMylan Pharmaceuticals Inc
Primary outcomeBioequivalence
Healthy
Fasting Study of Levothyroxine Sodium Tablets 300 μg to Levothroid® Tablets 300 μg
SponsorMylan Pharmaceuticals Inc
Primary outcomeBioequivalence
Healthy
A Study of Levothyroxine and Enlicitide Decanoate (MK-0616) in Healthy Adult Participants (MK-0616-028)
SponsorMerck Sharp & Dohme LLC
Primary outcomeArea under the Concentration-Time Curve from Time 0 to 48 hours (AUC0-48hrs) of Levothyroxine (total T4)
Healthy
Sorafenib Drug Drug Interaction Study in Healthy Male Subjects
Primary outcomeArea under the concentration vs. time curve from zero to infinity after single (first) dose (AUC) of sorafenib
Drug Interactions
Bioavailability Investigations of Thyronajod Mite Tablets of Dosage Strengths 50 μg Levothyrox-ine/75 μg Iodine, and 100 μg Levothyroxine/75 μg Iodine vs. a Levothyroxine Drinking-Solution: A Randomised Cross Over Study in Healthy Male Individuals. Currently: 50 μg/ 75 μg Tablets
SponsorHeidelberg University
Pharmacokinetics
Bioavailability Investigations of Thyronajod Mite Tablets of Dosage Strengths 50 μg Levothyrox-ine/75 μg Iodine, and 100 μg Levothyroxine/75 μg Iodine vs. a Levothyroxine Drinking-Solution: A Randomised Cross Over Study in Healthy Male Individuals. Currently: 100 μg/ 75 μg Tablets
SponsorHeidelberg University
Pharmacokinetics
Recurrent Pregnancy Loss and Thyroid Disease
SponsorSecond Affiliated Hospital of Soochow University
Primary outcomeGestational week at delivery
Recurrent Pregnancy Loss
A Clinical Trial of Adjunctive Thyroxine for Avolition in Schizophrenia
Primary outcomethe score of Motivation subscale of the Negative Symptom Assessment (NSA-15)
SchizophreniaAvolition
MASLD in Primary Hypothyroidism and Efficacy of Dapaglifozin
SponsorPost Graduate Institute of Medical Education and Research, Chandigarh
Primary outcomeChange in liver fat content
Hepatic Steato-FibrosisNon-Alcoholic Fatty Liver Disease
Effect of Age, Weight and Sex on Levothyroxine Pharmacokinetics
SponsorGeorgetown University
Hypothyroidism Primary