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A Study of LY4052031 in Participants With Advanced or Metastatic Urothelial Cancer or Other Solid Tumors

Basic Information

Recruitment status	Suspended
Health condition(s) or Problem(s) studied	Metastatic Solid Tumor Recurrent Solid Tumor Advanced Solid Tumor
Date of first enrollment	18/03/2025
Target sample size	420
Countries of recruitment	United States,Japan
Study type	Interventional
Intervention(s)	DRUG: LY4052031 Intravenous [Study Arms] Experimental: LY4052031 (Dose-escalation, Cohort A1) Escalating doses of LY4052031 administered intravenously (IV). Interventions: Drug: LY4052031 Experimental: LY4052031 (Dose-optimization, Cohort A2) Comparing 2 or more doses (evaluated during dose escalation) of LY4052031 administered IV. Interventions: Drug: LY4052031 Experimental: LY4052031 (Dose-expansion, Cohort B1, B2, C1) LY4052031 administered IV. Interventions: Drug: LY4052031

Outcome(s)

Primary Outcome

Phase 1a: To determine the recommended phase 2 dose (RP2D) or optimal dose of LY4052031 [ Time Frame: Cycle 1 (21 Days)] Number of participants with dose-limiting toxicities (DLTs) Phase 1b: To assess the antitumor activity of LY4052031 Monotherapy: Overall response rate (ORR) [Time Frame: Up to Approximately 48 Months or 4 Years] ORR per investigator assessed Response Evaluation Criteria in Solid Tumors, version 1.1 (RECIST 1.1)

Secondary Outcome

Key inclusion & exclusion criteria

Age minimum	>= 18age old
Age maximum	Not applicable
Gender	Both
Include criteria	Have one of the following solid tumor cancers: * Cohort A1: urothelial carcinoma, triple negative breast cancer, non-small cell lung cancer, esophageal cancer, pancreatic cancer, ovarian cancer, cervical cancer (squamous cell carcinoma), head and neck squamous cell carcinoma or prostate cancer * Cohort A2/B1/B2: urothelial carcinoma * Cohort C: triple negative breast cancer, non-small cell lung cancer, ovarian cancer, cervical cancer, head and neck squamous cell carcinoma, esophageal cancer, pancreatic cancer, or prostate cancer Prior Systemic Therapy Criteria: * Cohort A1/C: Individual has received all standard therapies for which the participant was deemed to be an appropriate candidate by the treating investigator; OR there is no standard therapy available for the disease. There is no restriction on number of prior therapies * Cohort A2/B1/B2: Individual must have received at least one prior regimen in the advanced or metastatic setting. There is no restriction on number of prior therapies. Prior enfortumab vedotin specific requirements: * Cohorts A1/A2/C: prior treatment with enfortumab vedotin is allowed, but not required * Cohort B1: individual must be enfortumab vedotin naive in the advanced/metastatic setting * Cohort B2: individual must have received enfortumab vedotin in the metastatic/advanced setting. Measurability of disease * Cohort A1: measurable or non-measurable disease as defined by Response Evaluation Criteria in Solid Tumors v1.1 (RECIST 1.1) * Cohorts A2, B1, B2, C: measurable disease required as defined by RECIST v1.1 Have an Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1 Have adequate archival tumor tissue sample available or undergo a screening biopsy if allowed per country specific regulations
Exclude criteria	Individual with known or suspected uncontrolled CNS metastases Individual with uncontrolled hypercalcemia Individual with uncontrolled diabetes Individual with evidence of corneal keratopathy or keratitis, and history of corneal transplant Any serious unresolved toxicities from prior therapy Significant cardiovascular disease Recent thromboembolic event or bleeding disorder Prolongation of QT interval corrected for heart rate using Fridericia's formula (QTcF) >= 470 ms History of pneumonitis/interstitial lung disease History of Grade >=3 skin toxicity when receiving enfortumab vedotin Individuals who are pregnant, breastfeeding or plan to breastfeed during study or within 30 days of last dose of study intervention