Testing TRX-920 Oral Gel for Advanced Solid Tumors

A Phase I, Open-label, Dose-finding Study to Assess the Safety, Tolerability, Pharmacokinetics and Preliminary Efficacy of TRX-920 Oral Gel (10 mg and 30 mg) in Patients With Advanced Solid Tumors

This study is testing a new oral gel treatment for patients with advanced solid tumors that haven't responded to other therapies to see if it is safe and effective.

Quick facts

• Phase: Phase 1
• Study type: Interventional
• Enrollment: 30 (estimated)
• Ages: 18 Years to 100 Years
• Sex: All
• Sponsor: TaiRx, Inc. (Industry-sponsored)
• Drugs / interventions: chemotherapy
• Locations: 3 sites (Taichung and 2 other locations)
• Trial ID: NCT06143774 on ClinicalTrials.gov

What this trial studies

This clinical trial evaluates the safety and effectiveness of TRX-920 Oral Gel, which contains SN38, an active metabolite of the anti-cancer drug Irinotecan. The study aims to determine the maximum tolerated dose, assess side effects, and measure drug concentration in the blood among patients with advanced solid tumors that have not responded to standard therapies. It is the first time this oral gel formulation is being tested in humans, following promising results in preclinical studies. The trial will be conducted at multiple hospitals in Taiwan.

Who should consider this trial

Good fit: Ideal candidates include adults aged 18 and older with advanced solid tumors that are refractory to standard therapies.

Not a fit: Patients with specific genetic profiles related to UGT1A1 alleles or significant comorbidities may not benefit from this study.

Why it matters

Potential benefit: If successful, this treatment could provide a new oral therapy option for patients with advanced solid tumors, potentially with fewer side effects than traditional treatments.

How similar studies have performed: While this approach is novel in its oral gel formulation, SN38 has shown effectiveness in other studies involving Irinotecan, suggesting potential for success.

Eligibility criteria

Inclusion Criteria:

Subjects must meet all of the following criteria to be eligible for enrollment in the study:

1. Signed and dated informed consent form
2. Histologically and cytologically confirmed advanced solid tumor malignancies that are refractory to standard therapy or have no accepted standard therapy.
3. Solid tumors that are measurable or evaluable as per Response Evaluation Criteria in Solid Tumors (RECIST v1.1). Target lesions that have been previously irradiated will not be considered measurable (lesion).
4. Female or male, 18 years of age or older.
5. ECOG performance status 0 or 1.
6. QTcF ≤ 480 ms at screening.

Exclusion Criteria:

1. Patients with homozygous or compound heterozygous genotypes for UGT1A1\*28 and \*6 alleles (e.g., \*28/\*28, \*6/\*6, \*6/\*28).
2. Clinically significant comorbidity such as unstable angina, congestive heart failure (NYHA Grade III or IV), uncontrolled hypertension (\>160/100 mmHg despite optimal medical treatment), chronic obstructive pulmonary disease (COPD) with frequent exacerbations, refractory asthma, inflammatory bowel disease or intestinal obstruction.
3. Acute myocardial infraction or cerebrovascular accident (CVA) within 6 months prior the first dose of study drug.
4. Central nervous system (CNS) metastasis or seizure disorder due to underlying malignancy except those who have been treated and have stable CNS metastases or are asymptomatic.
5. AIDS-defining opportunistic infections within the past 12 months.
6. HBV infection (positive HBsAg) except for carrier of inactive HBV as defined by negative HBeAg with normal ALT and HBV DNA \< 2,000 IU/mL or HCV infection (positive anti-HCV antibody) except for those with undetectable HCV RNA.
7. Inadequate bone marrow reserve, hepatic or renal function as defined by any of the following laboratory values:

   1. absolute neutrophil count (ANC) \< 1500/µL
   2. platelet count \< 90,000/µL
   3. hemoglobin \< 9 g/dL
   4. total bilirubin \> 1.5\*the upper limit of normal (ULN)
   5. aspartate aminotransferase (AST) or alanine aminotransferase (ALT) \> 3\*ULN if no hepatic metastases are present; \> 5\*ULN if hepatic metastases are present
   6. Non-indexed eGFR \< 60 mL/min (formula in Appendix 4)
8. Toxicities resulting from prior therapy or surgical procedures not yet resolved to ≤ NCI CTCAE v5.0 Grade 1 with the exception of alopecia, skin hyperpigmentation or hypopigmentation or grade 2 toxicity with prior approval of the Medical Monitor.
9. Major surgical procedures (as defined by Investigator) within 4 weeks prior to the first dose of study drug or any ongoing post-operative complications.
10. Receiving any radiotherapy within 3 months
11. Receiving any (investigational or approved) anti-cancer therapy (including chemotherapy or targeted therapy) within 28 days or 5 half-lives (whichever is longer) prior to the first dose of study drug
12. A history of apparent allergic reactions to irinotecan injection (dosed with prior treatment with prophylactic drug)
13. If female, is pregnant or breastfeeding
14. If men or women with childbearing potential, unwilling to use effective contraceptive methods during the study and for at least 3 months (men) or 1 month (women) after the last dose of study drug. Effective contraceptive methods include implants, injectables, combined oral contraceptives, intra-uterine devices (IUDs), sexual abstinence, surgical sterilization, or a partner who is sterile.
15. Receiving live attenuated vaccine within 28 days prior to the first dose of study drug.
16. Life expectancy \< 3 months.
17. Other prior or ongoing condition(s) that, in the opinion of the investigator, could affect the safety of the subject, compromise the subject's ability to comply with the study requirements or impair the assessment of study results.

Where this trial is running

Taichung and 2 other locations

• China Medical University Hospital — Taichung, Taiwan (Recruiting)
• National Cheng-Kung University Hospital — Tainan, Taiwan (Recruiting)
• Taipei Medical University Hospital — Taipei, Taiwan (Recruiting)

Study contacts

• Principal investigator: Li-Yuan Bai, M.D. — China Medical University, Taiwan
• Study coordinator: Yen-Ling Chen, Ph.D.

Conditions Advanced Solid Tumor; TRX-920 Oral Gel; SN38