Table of Contents
- What is THE-630?
- Target Conditions
- How THE-630 Works
- Clinical Trial Design
- Safety and Efficacy Assessment
- Pharmacokinetics
- Patient Groups
What is THE-630?
THE-630 is a new drug being tested for the treatment of gastrointestinal stromal tumors (GIST). It is an oral medication, which means it can be taken by mouth, typically once daily[1]. THE-630 belongs to a class of drugs called KIT tyrosine kinase inhibitors. These drugs work by blocking specific proteins that are involved in the growth and spread of cancer cells[1].
Target Conditions
THE-630 is primarily being studied for the treatment of:
- Gastrointestinal Stromal Tumors (GIST): These are rare tumors that occur in the digestive tract, most commonly in the stomach or small intestine.
- Advanced or metastatic GIST: This refers to GIST that has spread to other parts of the body or cannot be surgically removed.
- Connective tissue neoplasms
- Soft tissue neoplasms
- Gastrointestinal neoplasms
- Digestive system neoplasms
How THE-630 Works
THE-630 is a KIT tyrosine kinase inhibitor. To understand how it works:
- KIT is a protein found on the surface of certain cells, including some cancer cells.
- In many cases of GIST, the KIT protein is abnormally active, causing uncontrolled cell growth.
- THE-630 works by blocking (or inhibiting) the activity of the KIT protein.
- By doing this, it aims to slow down or stop the growth of cancer cells.
Clinical Trial Design
The clinical trial for THE-630 is designed in two phases:
- Phase 1 (Dose Escalation): This phase aims to:
- Determine the safety profile of THE-630
- Identify any dose-limiting toxicities (side effects that prevent increasing the dose)
- Establish the maximum tolerated dose (MTD)
- Determine the recommended Phase 2 dose (RP2D)
- Phase 2 (Expansion): This phase will:
- Further assess safety and tolerability
- Evaluate the anti-tumor activity of THE-630 in different GIST patient populations
Safety and Efficacy Assessment
The trial will assess THE-630’s safety and effectiveness through various measures:
- Safety: Monitoring for adverse events (side effects) using standardized criteria
- Efficacy: Measuring how well the drug works against the tumor, including:
- Objective Response Rate (ORR): The proportion of patients whose tumors shrink or disappear
- Duration of Response (DOR): How long the tumor response lasts
- Progression-Free Survival (PFS): How long patients live without their cancer getting worse
- Overall Survival (OS): How long patients live overall
Pharmacokinetics
The trial will also study how THE-630 behaves in the body, known as pharmacokinetics. This includes measuring:
- Cmax: The maximum concentration of the drug in the blood
- Tmax: The time it takes to reach the maximum concentration
- AUC: The total exposure to the drug over time
Patient Groups
The trial includes different groups of GIST patients based on their previous treatments:
- 5th Line or Later: Patients who have tried at least four other treatments, including imatinib, sunitinib, regorafenib, and ripretinib.
- 3rd-4th Line: Patients who have tried imatinib, sunitinib, and up to one additional therapy.
- 2nd Line: Patients who have only tried imatinib and haven’t received any other systemic therapy for advanced GIST.



