Participation Deadline: 11/12/2026
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Description

PRIMARY OBJECTIVE:

I. To determine the overall response rate (ORR) defined as complete response (CR) and partial response (PR) in patients with locally advanced or metastatic transitional cell carcinoma (TCC) harboring a TSC1 mutation.

SECONDARY OBJECTIVES:

I. To evaluate the safety and tolerability of sapanisertib (MLN0128) (TAK-228) in patients with locally advanced or metastatic TCC harboring a TSC1 or TSC2 mutation.

II. To evaluate progression free survival (PFS) and overall survival (OS).

EXPLORATORY OBJECTIVES:

I. To determine the ORR in patients with locally advanced or metastatic TCC harboring a TSC2 mutation.

II. To evaluate toxicity, PFS, and OS in TSC2 mutation patients.

OUTLINE:

Patients receive sapanisertib orally (PO) once daily (QD) on days 1-28. Cycles repeat every 28 days in the absence of disease progression or unacceptable toxicity.

After completion of study treatment, patients are followed up for 4 weeks and every 6 months thereafter.