Clinical trial • Phase III • Endocrinology

THIAMAZOLE for Graves' disease | Graves' orbitopathy

Phase III trial of THIAMAZOLE for Graves' disease | Graves' orbitopathy.

Overview

Trial Therapeutic Area
Endocrinology
Trial Disease
Graves' disease | Graves' orbitopathy
Trial Stage
Phase III
Drug Modality
Small molecule | Radiopharmaceutical

Key dates

Initial CTIS Submission Date
10-10-2024
First CTIS Authorization Date
19-11-2024

Trial design

Randomised, open-label, comparator arms: radioiodine (sodio ioduro (i131) curium netherlands 37-7400 mbq capsule rigid; oral; max total dose reported 15 mci) or total thyroidectomy (surgical ablation).-controlled Phase III trial across 1 site in Italy.

Randomised
Yes
Open Label
Yes
Comparator
Comparator arms: radioiodine (Sodio ioduro (I131) Curium Netherlands 37-7400 MBq capsule rigid; oral; max total dose reported 15 mCi) or total thyroidectomy (surgical ablation).
Target Sample Size
52
Trial Duration For Participant
168

Eligibility

Recruits 52 Adults aged 18-75 only; participants must be willing and capable of giving written informed consent; mental illness that prevents comprehensive, written informed consent is an exclusion; no vulnerable populations selected..

Pregnancy Exclusion
Pregnancy or breastfeeding
Vulnerable Population
Adults aged 18-75 only; participants must be willing and capable of giving written informed consent; mental illness that prevents comprehensive, written informed consent is an exclusion; no vulnerable populations selected.

Inclusion criteria

  • {"criterion_text":"-1. Patients willing and capable of giving written informed consent, which includes compliance with the requirements and restrictions listed in the consent form\n-2. A diagnosis of Graves’ disease based on the presence of hyperthyroidism associated with detectable anti-thyrotropic hormone (TSH) receptor autoantibodies (TRAb). Patients must be euthyroid under control on stable medical regimen and every effort will be made to maintain the euthyroid status for the entire duration of the clinical trial.\n-3. Duration of Graves’ disease shorter than 18 months\n-4. A moderate-to-severe GO, defined as the presence of at least two of the following criteria in the most affected eye: an exophthalmos ≥3 mm compared with normal values for sex and race; presence of inconstant to constant diplopia; a lid retraction ≥2 mm; active GO (see below)\n-5. Active GO: CAS ≥ 3 out of 7 points in the most affected eye. Taking into account severity (moderate-to-severe) and activity (CAS ≥ 3/7) of GO, patients are eligible for methylprednisolone treatment according to clinical practice.\n-6. Duration of GO shorter than 18 months\n-7. AST, ALT and CPK levels ≤ 3 times the upper value of normal range\n-8. Absolute neutrophil count >1000 cells/L\n-9. Women of childbearing potential (WOCBP, namely not in menopause or in menopause since less than two years; in all other instances women will be considered as non-WOCBP) and men who are sexually active with WOCBP must use any contraceptive method with a failure rate of less than 1% per year (as indicated in Appendix) for at least 6 and 7,5 months, respectively, after the last dose of the investigational drug (see also 2014_09_HMA_CTFG_Contraception.pdf, namely the “2014 CTFG Recommendations related to contraception and pregnancy testing in clinical trials”)\n-10. Male and female patients of age 18-75 years"}

Exclusion criteria

  • {"criterion_text":"-1. Optic neuropathy or sight threatening GO of any type\n-2. Previous therapy for Graves’ disease with radioiodine or thyroidectomy\n-3. Corticosteroids or other immunosuppressive treatment for GO or other reasons in the last 3 months.\n-4. Previous surgical treatment and/or radiotherapy for GO.\n-5. Contraindications to GC: hypersensitivity to the active substance or to any of the excipients; uncontrolled hypertension, uncontrolled diabetes; history of peptic ulcer; urinary infections, glaucoma, systemic fungal infections, systemic infections unless appropriate therapy is employed, idiopathic thrombocytopenic purpura, cerebral edema associated with malaria.\n-6. Contraindications to RAI.\n-7. Previous or current glucocorticoid-related psychosis.\n-8. Use of medications interfering with GC or increasing the risk of GC-related adverse events (see prohibited therapies)\n-9. Acute or chronic liver disease\n-10. Contraindications to MMI: hypersensitivity to the active substance or to any of the excipients; breastfeeding\n-11. Contraindications of any kind to perform thyroidectomy\n-12. Relevant Malignancy\n-13. Recent (≤1 year) history of alcoholism or drug abuse\n-14. Mental illness that prevent patients from comprehensive, written informed consent\n-15. Pregnancy or breastfeeding"}

Endpoints

Primary endpoints

  • {"endpoint_text":"-Response rate 24 weeks after inclusion: -Comparison of overall GO outcome determined using a composite evaluation as indicated below. The evaluation will be performed by a unblinded ophthalmologist and will be documented in the CRF, including the following items: -Lid aperture in mm - CAS (5 items) -Exophthalmos in mm using a Hertel exophthalmometer -Eye ductions -Visual acuity using the Snellen chart in log10","definition_or_measurement_approach":"Composite evaluation performed by an unblinded ophthalmologist at 24 weeks, documented in the CRF, including lid aperture (mm), Clinical Activity Score (CAS, 5 items), exophthalmos measured with a Hertel exophthalmometer (mm), eye ductions, and visual acuity using the Snellen chart expressed in log10."}

Recruitment

Planned Sample Size
52
Recruitment Window Months
36
Consent Approach
Written informed consent must be provided by participants themselves; adults only (age 18-75). Informed consent form available ('L1_ICF Adults'). No assent procedures for minors (no paediatric participants). Participants must be capable of giving written informed consent; mental incapacity preventing comprehensive written consent is an exclusion.

Geography

Total Number Of Sites
1
Total Number Of Participants
52

Italy

Earliest CTIS Part Ii Submission Date
26-09-2024
Latest Decision Or Authorization Date
19-11-2024
Processing Time Days
54
Number Of Sites
1
Number Of Participants
52

Sites

Site Name
Azienda Ospedaliero Universitaria Pisana
Department Name
UO Endocrinologia
Contact Person Name
Michele Marinò
Contact Person Email
michele.marino@unipi.it
Number Of Participants
52

Sponsor

Primary sponsor

Full Name
Azienda Ospedaliero Universitaria Pisana
Organisation Type
Hospital/Clinic/Other health care facility
Country Of Registered Address
Italy

Investigational products

Investigational Product Name
TAPAZOLE 5 mg compresse
Active Substance
THIAMAZOLE
Modality
Small molecule
Routes Of Administration
ORAL USE
Route
ORAL
Authorisation Status
Marketing authorisation: 005472028 (Italy)
Starting Dose
5 mg
Maximum Dose
2520 mg
Investigational Product Name
Sodio ioduro (I131) Curium Netherlands 37-7400 MBq capsula rigida
Active Substance
SODIUM IODIDE (131I)
Modality
Radiopharmaceutical
Routes Of Administration
ORAL USE
Route
ORAL
Authorisation Status
Marketing authorisation: 039009016 (Italy)
Starting Dose
15 mCi
Maximum Dose
15 mCi

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