Tofacitinib for Glucocorticoid-Resistant Moderate-to-Severe Thyroid Eye Disease
TOFA-GO
A Single-Arm, Open-Label, Exploratory Study of Tofacitinib in Patients With Glucocorticoid-Resistant or Intolerant Moderate-to-Severe Active Thyroid Eye Disease
1 other identifier
interventional
8
1 country
1
Brief Summary
Thyroid Eye Disease (TED), also known as Graves' orbitopathy, is an autoimmune condition that causes inflammation and tissue expansion behind the eyes, leading to bulging eyes (proptosis), double vision, and pain. Currently, intravenous glucocorticoids (steroids) are the standard first-line treatment. However, approximately 20-30% of patients do not respond to steroids, or cannot tolerate their side effects. This study aims to evaluate the safety and efficacy of Tofacitinib, an oral medication known as a Janus kinase (JAK) inhibitor, as a rescue therapy for these difficult-to-treat cases. Tofacitinib works by blocking specific signaling pathways (JAK-STAT) that drive inflammation and fibrosis in the eye socket. In this study, patients with moderate-to-severe active TED who are resistant to or intolerant of steroids will receive Tofacitinib tablets (5 mg twice daily) for 24 weeks. The researchers will assess whether the treatment can effectively reduce eye bulging and improve clinical activity scores.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at below P25 for phase_2
Started Apr 2026
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
April 14, 2026
CompletedFirst Posted
Study publicly available on registry
April 23, 2026
CompletedStudy Start
First participant enrolled
April 24, 2026
CompletedPrimary Completion
Last participant's last visit for primary outcome
December 30, 2027
ExpectedStudy Completion
Last participant's last visit for all outcomes
December 30, 2027
April 29, 2026
January 1, 2026
1.7 years
April 14, 2026
April 28, 2026
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
Overall Response Rate (ORR)
Percentage of participants classified as responders in the study eye. A responder is defined as a patient who achieves at least one of the following criteria without deterioration in the fellow eye: (1) Reduction in proptosis\>=2 mm; (2) Reduction in Clinical Activity Score (CAS) \>= 2 points (on a 7-point scale).
Week12,24
Secondary Outcomes (5)
Change in Proptosis
Baseline, Week 4, 12, 24, and 36
Change in Clinical Activity Score (CAS)
Baseline, Week 4, 12, 24, and 36
Diplopia Response
12W,24W
Change in Graves' Orbitopathy Quality of Life (GO-QOL) Score
Baseline and Week4,12,24,36
Incidence of Adverse Events
From baseline through Week 36
Study Arms (1)
Tofacitinib Treatment Group
EXPERIMENTALParticipants in this arm will receive oral Tofacitinib Citrate (5 mg) twice daily (BID) for a total treatment duration of 24 weeks. Following the 24-week treatment period, participants will undergo a 12-week drug-withdrawal observation phase to monitor for disease relapse and safety.
Interventions
5 mg tablet administered orally twice daily (BID) for a continuous period of 24 weeks.
Eligibility Criteria
You may qualify if:
- Age and Gender: Male or female participants aged 18 to 75 years (inclusive).
- Diagnosis: Clinical diagnosis of Graves' orbitopathy (GO) consistent with EUGOGO criteria.
- Severity: Moderate-to-severe GO as defined by EUGOGO guidelines (impact on daily life, but not sight-threatening).
- Activity: Active disease, defined as a Clinical Activity Score (CAS) \>=3 points (on the 7-point scale).
- Refractory Status (Must meet ONE of the following):Glucocorticoid-Resistant: Failure to respond (no significant improvement in proptosis or CAS) after receiving a cumulative dose of at least 3g of intravenous methylprednisolone (or equivalent).Glucocorticoid-Intolerant: Documented contraindications to high-dose systemic glucocorticoids (e.g., uncontrolled diabetes mellitus, severe osteoporosis, glaucoma, severe psychiatric disorders) or history of severe adverse events leading to discontinuation.
- Thyroid Function: Euthyroid or mild hypothyroidism/hyperthyroidism maintained on stable antithyroid drugs or thyroxine replacement therapy for at least 4 weeks prior to baseline.
- Contraception: Women of childbearing potential must agree to use effective contraception during the study period and for at least 4 weeks after the last dose of the study drug.
- Consent: Willing and able to provide written informed consent and comply with study procedures.
You may not qualify if:
- Sight-Threatening Disease: Presence of Dysthyroid Optic Neuropathy (DON) or severe corneal breakdown requiring immediate surgical intervention.
- Chronic/Inactive Disease: Fibrotic or burnout stage of GO with a Clinical Activity Score (CAS) \< 3.
- Prior Orbital Treatment:Orbital radiotherapy at any time.Orbital surgical decompression at any time.Strabismus surgery or eyelid surgery within 3 months prior to baseline.
- Concomitant Immunomodulation: Use of other biologic agents (e.g., Teprotumumab, Rituximab, Tocilizumab) within 3 months prior to baseline.
- Active Infection Risk (Critical for JAK Inhibitors):Active tuberculosis (TB) or untreated latent TB.Active or chronic Hepatitis B or Hepatitis C infection.Human Immunodeficiency Virus (HIV) infection.History of disseminated herpes zoster or herpes simplex.Any severe active infection requiring hospitalization or IV antibiotics within 4 weeks of baseline.
- Thrombosis Risk: History of venous thromboembolism (VTE), including deep vein thrombosis (DVT) or pulmonary embolism (PE), or known coagulation disorders.
- Malignancy: History of any malignancy within the past 5 years (except adequately treated basal cell or squamous cell carcinoma of the skin, or carcinoma in situ of the cervix).
- Laboratory Abnormalities:Absolute Neutrophil Count (ANC) \< 1.0 \*10\^9/L and/or Absolute Lymphocyte Count (ALC) \< 0.5 \*10\^9/L and /or Hemoglobin \< 90 g/L and/or AST or ALT \> 2\* Upper Limit of Normal (ULN) and/or Estimated Glomerular Filtration Rate (eGFR) \< 60 mL/min/1.73 m²
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
The First Affiliated Hospital of Xiamen University
Xiamen, Fujian, 361003, China
Related Publications (4)
Kim W, Seo MK, Kim YJ, Choi SH, Ku CR, Kim S, Lee EJ, Yoon JS. Role of the suppressor of cytokine signaling-3 in the pathogenesis of Graves' orbitopathy. Front Endocrinol (Lausanne). 2025 Mar 4;16:1527275. doi: 10.3389/fendo.2025.1527275. eCollection 2025.
PMID: 40104138BACKGROUNDGhahvehchian H, Eshraghi B. Tofacitinib for Refractory Thyroid Eye Disease. JAMA Ophthalmol. 2025 Dec 1;143(12):1073-1075. doi: 10.1001/jamaophthalmol.2025.3974.
PMID: 41165674BACKGROUNDWiersinga WM, Eckstein AK, Zarkovic M. Thyroid eye disease (Graves' orbitopathy): clinical presentation, epidemiology, pathogenesis, and management. Lancet Diabetes Endocrinol. 2025 Jul;13(7):600-614. doi: 10.1016/S2213-8587(25)00066-X. Epub 2025 May 2.
PMID: 40324443BACKGROUNDBartalena L, Kahaly GJ, Baldeschi L, Dayan CM, Eckstein A, Marcocci C, Marino M, Vaidya B, Wiersinga WM; EUGOGO dagger. The 2021 European Group on Graves' orbitopathy (EUGOGO) clinical practice guidelines for the medical management of Graves' orbitopathy. Eur J Endocrinol. 2021 Aug 27;185(4):G43-G67. doi: 10.1530/EJE-21-0479.
PMID: 34297684BACKGROUND
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Study Officials
- PRINCIPAL INVESTIGATOR
Fangsen Xiao, MD
The First Affiliated Hospital of Xiamen University
Central Study Contacts
Study Design
- Study Type
- interventional
- Phase
- phase 2
- Allocation
- NA
- Masking
- NONE
- Purpose
- TREATMENT
- Intervention Model
- SINGLE GROUP
- Sponsor Type
- OTHER
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
April 14, 2026
First Posted
April 23, 2026
Study Start
April 24, 2026
Primary Completion (Estimated)
December 30, 2027
Study Completion (Estimated)
December 30, 2027
Last Updated
April 29, 2026
Record last verified: 2026-01
Data Sharing
- IPD Sharing
- Will not share
IPD will not be shared in accordance with applicable data privacy laws and institutional ethics requirements. The informed consent obtained from participants did not authorize external data sharing.