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A Study Evaluating the Safety, Tolerability, Pharmacokinetics, and Efficacy of TT125-802 in Subjects With Advanced Solid Tumors

A Phase 1, First-in-Human, Open-label Study Evaluating the Safety, Tolerability, Pharmacokinetics, and Efficacy of TT125-802 in Subjects With Advanced Solid Tumors

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06403436
Acronym
TT-CSP-001
Enrollment
45
Registered
2024-05-07
Start date
2023-11-07
Completion date
2026-06-30
Last updated
2026-07-07

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

Conditions

Adult Disease, Adult Solid Tumor, Advanced Solid Tumor, Cancer, EGFR, KRAS G12C, NSCLC, Squamous Cell Lung Cancer

Keywords

TOLREMO, Drug resistance, TT125-802, Small molecule, Bromodomain inhibitor, NSCLC

Brief summary

The purpose of this study is to test the safety and therapeutic effect of TT125-802 (single agent) in subjects with advanced solid tumors.

Detailed description

The purpose of this Phase 1, First-in-Human, Open-label Study is to assess the safety, tolerability, pharmacokinetics, pharmacodynamics, and efficacy of TT125-802 as single agent in subjects with advanced solid tumors.

Interventions

DRUGTT125-802

TT125-802 administered orally

Sponsors

TOLREMO therapeutics AG
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

* Males and nonpregnant and non-breastfeeding females, aged ≥ 18 years of age at the time of signing the informed consent. * Subjects with advanced solid tumors resistant or refractory to standard treatment. * Eastern Cooperative Oncology Group (ECOG) performance status 0 or 1. * Measurable disease per RECIST 1.1 criteria. * Adequate hematological function defined by absolute neutrophil count, ≥ 1.5 × 10\^9/L, platelet count ≥ 100 × 10\^9/L, and hemoglobin ≥ 9 g/dL, and without growth factor treatment or blood transfusion within 2 weeks before the study intervention start. * Adequate hepatic function defined by total bilirubin level ≤ 1.5 × upper limit of normal (ULN), aspartate aminotransferase (AST) level ≤ 3 × ULN, and an alanine aminotransferase (ALT) level ≤ 3 × ULN. * Adequate renal function defined by creatinine clearance \> 60 mL/min according to the Cockcroft-Gault equation or creatinine levels \<1.5 mg/dl. * Adequate coagulation laboratory assessments, as follows: Prothrombin time (PT) or partial thromboplastin time (PTT) \< 1.5 x upper limit of normal (ULN), or international normalized ratio (INR) \< 1.5 or within target range if on prophylactic anticoagulation therapy. * Life expectancy of \> 3 months, in the opinion of the Investigator. * Willing to adhere to contraception, egg and sperm donation, the fasting requirement, and other criteria as described in lifestyle restrictions * Capable of giving signed informed consent.

Exclusion criteria

* Clinically significant (i.e., active) uncontrolled intercurrent illness. * Presence of brain metastases unless clinically stable. * History or presence of malignancies unless curatively treated with no evidence of disease ≥ 2 years. * Subjects with known human immunodeficiency virus and/or active viral hepatitis (B and/or C), and subjects on viral hepatitis B therapy are excluded. However, subjects with hepatitis C treated with curative therapy are not considered actively infected. * Subject received a live vaccine within 30 days prior to the first dose of the study treatment administration. * Serious gastrointestinal bleeding within 3 months, refractory nausea and vomiting, uncontrolled diarrhea, known malabsorption, significant small bowel resection or gastric bypass surgery, use of feeding tubes, other chronic gastrointestinal disease, and/or other situation that may preclude adequate absorption of oral medications. * Subjects that have received a strong CYP3A4 inhibitor within 7 days prior to the first dose of TT125-802 or a strong CYP3A4 inducer within 14 days prior to the first dose of TT125-802. * Hypersensitivity to the active substance or to any of the excipients of TT125-802.

Design outcomes

Primary

MeasureTime frame
Frequency and severity of adverse events (AEs) and serious adverse events (SAEs)Day 1 to approximately 16 weeks
Frequency of dose interruptions and dose reductionsDay 1 to approximately 16 weeks
Incidence of dose-limiting toxicities (DLTs)Day 1 to Day 21
Recommended Dose(s) for ExpansionDay 1 to Day 21

Secondary

MeasureTime frame
Plasma concentration of TT125-802 in bloodDay 1 to approximately 16 weeks
Objective response rate (ORR) assessed by RECIST v1.1Day 1 to approximately 16 weeks
Duration of response (DOR) according to RECIST v1.1Day 1 to approximately 16 weeks
Progression-free survival (PFS) according to RECIST v1.1Day 1 to approximately 16 weeks

Countries

Spain, Switzerland, United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jul 8, 2026