Skip to content

Study of ST-1898 in Locally Advanced or Metastatic Radioiodine-Refractory Differentiated Thyroid Cancer

A Multicenter, Phase II Clinical Trial to Evaluate the Efficacy and Safety of ST-1898 Tablets in Patients With Locally Advanced or Metastatic RAIR-DTC After Failure of at Least First-line TKI Systemic Therapy

Status
Recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06359847
Enrollment
60
Registered
2024-04-11
Start date
2023-11-15
Completion date
2027-12-31
Last updated
2025-08-24

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Differentiated Thyroid Carcinoma

Keywords

ST-1898,Differentiated Thyroid Cancer

Brief summary

ST-1898, a multi-targeted tyrosine kinase inhibitor, has demonstrated strong inhibitory activity for VEGFR2, c-MET, AXL, PDGFRA, RET, KIT, etc. The primary purpose of this study is to evaluate the efficacy of ST-1898 tablets in patients with locally advanced or metastatic RAIR-DTC after failure of at least first-line TKI systemic therapy. All subjects will receive ST-1898 180 mg orally once daily until disease progression or intolerable toxicity.

Interventions

Tablets: 5 mg and 40 mg

Sponsors

Beijing Scitech-Mq Pharmaceuticals Limited
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

Eligibility Minimum Age: 18 Years Maximum Age: Sex: All Gender Based: Accepts Healthy Volunteers: No Criteria: Inclusion Criteria: 1. Age \>= 18 years 2. Life expectancy of twelve weeks or more 3. Histologically or cytologically confirmed locally advanced or metastatic DTC that cannot be removed by surgery or radiotherapy, including papillary thyroid cancer, follicular thyroid cancer, hurthle cell thyroid cancer or poorly differentiated thyroid cancer. 4. At least one measurable lesion according to RECIST 1.1 5. Radioiodine-refractory (RAI-refractory) differentiated thyroid cancer can be diagnosed when any of the following criteria are met under thyroid-stimulating hormone (TSH) stimulation (\>30 mU/L) in the absence of exogenous iodine interference: * Negative uptake in one or more measurable lesions after receiving I-131 treatment or scanning * One or more measurable lesions that has progressed as per RECIST 1.1 within 14 months of 131I therapy(3.7\ 7.4 GBq or100\ 200 mCi),despite demonstration of radioiodine avidity at the time of that treatment by pre- or post-treatment scanning. * Cumulative activity of 131I of \> 22 GBq or 600 mCi, with the last dose administered at least 6 months prior to study entry 6. Subjects with DTC who failed with or was intolerant to at least one prior tyrosine kinase inhibitor (TKI) therapy. If prior treatment with VEGFR-TKI, no more than two VEGFR-TKIs were allowed. 7. Recommendation of subject offering archived tissue sample or previous biomarker of MET test report. If archived tumor sample is not available, a fresh biopsy is optional, which need to be taken from needle biopsy or core needle biopsy (fine needle biopsy not allowed). Subjects who cannot provide tissue samples or test reports may still be eligible to participate if the investigator determines a potential clinical benefit from ST-1898 therapy. 8. Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1. 9. TSH-suppression therapy is well tolerated with thyroid stimulating hormone (TSH) \< 0.5 mU/L; 10. The patient has adequate organ and bone marrow function as follows: * Adequate bone marrow function (without transfusion or colony stimulating factor support within 2 weeks): hemoglobin ≥ 90 g/L, absolute neutrophil count (ANC) ≥ 1.5 ×10\^9/L and platelets ≥ 100 × 10\^9/L; * Adequate liver function: Bilirubin ≤ 1.5 × upper limit of normal (ULN); Alanine aminotransferase (ALT), and aspartate aminotransferase (AST) ≤ 3 × ULN (≤ 5 × ULN if participant has liver metastases); * Adequate renal function: Serum creatinine ≤1.5 ×ULN or creatinine clearance≥50 mL/min per the Cockcroft-Gault formula; * Adequate blood coagulation function: International Normalized Ratio (INR) ≤ 1.5 and Activated partial thromboplastin time (APTT) ≤1.5 ULN(except for the prophylactic use of anticoagulants) * Adequate cardiac function: Left ventricular ejection fraction (LVEF) ≥50%; * Participants having≤ 1 + proteinuria or ≥2+ proteinuria with urine protein \< 1 g/24 hour. 11. Ability to understand and the willingness to sign a written informed consent document. The results of routine examination during the corresponding window period before screening are acceptable. 12. Women with child-bearing potential and men must agree to use adequate contraception (e.g., hormonal contraceptives, male or female condom, or abstinence) during the course of the study and for at least 3 months following the last dose of study drug. Women with childbearing potential must have a negative serum pregnancy test within 7 days before first study treatment.

Exclusion criteria

1. Other histological subtypes of thyroid cancers excluding DTC (such as Anaplastic Thyroid Carcinoma and Medullary Thyroid Carcinoma). 2. Known hypersensitivity to any component of ST-1898 tablets. 3. Participants who have received any antitumor treatment within 4 weeks or 5 half-lives of the agent (contingent on the shorter time) prior to the first dose of study drug. 4. Patients who underwent major surgery, open biopsy or significant traumatic injury within 4 weeks prior to the first dose of study drug. 5. Serious non-healing wound/ulcer/bone fracture. 6. ≥ grade 3 bleeding episodes within 6 months prior to first dose of study treatment, or currently ≥ grade 2 hemorrhage, with high bleeding risks (such as coagulation disorders, tracheobronchial infiltration with significant bleeding, active gastrointestinal ulcer and esophageal varices) 7. Active hemoptysis or more than 0.5 teaspoon (2.5 mL) of hemoptysis per day within 2 months before first dose of study treatment 8. Subjects with antiplatelet agents treatment (low-dose aspirin ≤100 mg/day is permitted). 9. Current or previous severe retinopathy who, in the judgment of the Investigator or specialist, are not suitable for enrollment 10. Significant cardiovascular impairment, including but not limited to: 1. Serious arrhythmia or cardiac conduct abnormality, such as degree II-III atrioventricular block or ventricular arrhythmia needs to be treated. 2. QTcF interval extension (by the Fridericia formula): male \>450 ms, female \>480 ms 3. Acute coronary syndrome, stroke, deep vein thrombosis, pulmonary- thromboembolism, arterial thrombosis, congestive heart failure, aortic dissection etc. 4. New York Heart Association Class ≥ II 5. Uncontrolled hypertension, as defined by a sustained blood pressure (BP) \> 140/90 mmHg. 11. Known brain metastasis unless adequately treated with radiotherapy and/or surgery (including radiosurgery) and stable for at least 4 weeks before first dose of study treatment. Eligible subjects must be neurologically asymptomatic and with a stable dose of corticosteroid treatment before first dose of study treatment. 12. Interstitial lung disease or radiation pneumonia in need of glucocorticoids intervention 13. Subjects with malignant tumors in the last 5 years (not including non-melanoma skin cancer, breast cancer or cervical cancer in situ, and Non-Muscle-invasive bladder cancer have been cured) 14. Receiving chronic concomitant treatment of strong CYP3A4 inducers, CYP3A4 inhibitors or CYP3A4 substrate with a narrow therapeutic window within 2 weeks prior to study drug administration, 15. Prior treatment of BRAF inhibitors. 16. Has not recovered from toxicities caused by prior therapy to CTCAE ≤Grade 1 (except for ≤Grade 2 peripheral neuropathy, alopecia, and other events judged tolerable by the Investigator and without safety risks). 17. HIV antibodies or Treponema pallidum antibodies positive, active hepatitis B (HBV-DNA≤ 2×ULN allowed to enroll), hepatitis C virus (HCV) antibody-positive and HCV-RNA- positive, or other active hepatitis, clinically significant moderate-to-severe cirrhosis. Prophylactic antiviral therapy other than interferon are allowed. 18. Acute bacterial, viral or fungal infections (any infection requiring systemic treatment) 19. Females who are pregnant or breastfeeding. 20. Drug or alcohol dependents. 21. Significant disorder of neurology or mental disease or poorly compliance. 22. Subjects with oral administration impossible, or in the conditions of malabsorption as determined by the investigator, such as dysphagia and intestinal obstruction, etc.. 23. Uncontrolled pleural effusion, pericardial effusion, abdominal effusion requiring frequent drainage or medical intervention (clinically significant recurrence requiring additional intervention within 2 weeks after intervention, excluding exudate cytology) before first dose of study treatment. 24. Any history of other serious systemic diseases, or any other reason that might interfere with participation in trial or interfere with interpretation of trial results, in the judgement of the Investigator, that are not qualified to participate in this trial.

Design outcomes

Primary

MeasureTime frameDescription
Objective Response Rate (ORR)Up to 24 monthsORR is defined as the proportion of patients who have had a PR or CR as assessed by the RECIST 1.1. (CR: Complete Response, Disappearance of all target lesions, PR: Partial Response, \>=30% decrease in the sum of the longest diameters of target lesions). Overall Response (OR) = CR + PR

Secondary

MeasureTime frameDescription
PFSUp to 24 monthsProgression-Free Survival (PFS) per RECIST 1.1
PFS6mup to 24 monthsPFS6m per RECIST 1.1
DCRup to 24 monthsDisease Control Rate (DCR) per RECIST 1.1
DORup to 24 monthsDuration of Response (DOR) per RECIST 1.1
OSup to 24 monthsOverall Survival (OS) per RECIST 1.1
The number and frequency of treatment-related adverse events (AEs) and treatment related serious adverse events (SAEs)Up to 24 monthsAEs and SAEs will be assessed according to the National Cancer Institute (NCI) CTCAE v5.0.
Thyroglobulin Antibody (TgAb)Up to 24 monthsCorrelation analysis between TgAb and efficacy of ST-1898
Pharmacokinetic (PK) Parameter: TmaxOn Day 1 from Cycle 1 to Cycle 4 (21 days per cycle), up to 12 weeksTime to Peak Plasma Concentration.
Pharmacokinetic (PK) Parameter: T1/2On Day 1 from Cycle 1 to Cycle 4 (21 days per cycle), up to 12 weeksTerminal Elimination Half-life.
Pharmacokinetic (PK) Parameter: CmaxOn Day 1 from Cycle 1 to Cycle 4 (21 days per cycle), up to 12 weeksMaximum Plasma Concentration.
Pharmacokinetic (PK) Parameter: AUCOn Day 1 from Cycle 1 to Cycle 4 (21 days per cycle), up to 12 weeksArea Under the Curve of ST-1898 plasma concentration-time curve.
Thyroglobulin (Tg)Up to 24 monthsCorrelation analysis between Tg and efficacy of ST-1898

Countries

China

Contacts

Primary ContactYansong Lin, MD
linyansong1968@163.com0086-10-69151188
Backup ContactXin Zhang, MD
zhangxin37@pumch.cn0086-10-69151188

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026