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ITIL-306

Phase 1

Epithelial Ovarian Cancer | Monoclonal antibody | Oncology |Instil Bio, Inc.|Last Updated: Apr 15, 2026

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
CONTROLLEDBiomarker
Total Trials1
Total Enrollment51
FDA Designations
No designations recorded
Trial Stopped -NCT05397093: The study was terminated early due to discontinuation of development of the investigational program
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT05397093ITIL-306 in Advanced Solid TumorsPHASE1 TERMINATED 1Aug 24, 2022Mar 6, 2026Apr 15, 20262 United States
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Study Endpoints
Primary Endpoints
Frequency and severity of ITIL-306 treatment-emergent adverse events (AEs), serious AEs, and AEs of special interest (AESI)
Up to 24 months
Secondary Endpoints
Objective response rate (ORR)
Up to 60 months
Duration of response (DOR)
Up to 60 months
Progression-free survival (PFS)
Up to 60 months
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Study Design & Arms
AllocationNON_RANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Phase 1a: Dose EscalationEXPERIMENTALVarious doses will be tested in participants with EOC, NSCLC and RCC.
Phase 1b: ExpansionEXPERIMENTALCohort 1: Participants with epithelial ovarian cancer (EOC) Cohort 2: Participants with non-small cell lung cancer (NSCLC) Cohort 3: Participants with renal cell carcinoma (RCC)
Interventions
NameTypeDescription
ITIL-306BIOLOGICALITIL-306 is a cell therapy product derived from a participant's own TILs and contains a unique molecule designed to increase TIL activity when it encounters FOLR1 on the tumor. A portion of the participant's tumor is surgically removed to make a personalized ITIL-306 product. Once ITIL-306 has been made, the participant is treated with 3 days of lymphodepleting chemotherapy including cyclophosphamide and fludarabine, followed by 2 days of rest then a single infusion of ITIL-306.
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites2

Key Inclusion Criteria: * Histologically documented advanced (metastatic and/or unresectable) disease as appropriate per cohort. * Phase 1a Dose Escalation: High-grade serous epithelial carcinoma of the ovary, fallopian tube, or peritoneum, adenocarcinoma of the lung, or clear-cell renal cell ca...

Countries:United States
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Recent Changes (Last 90 Days)
MEDIUMMay 26, 2026NCT05397093TRIAL_REMOVED: changed
LOWMay 24, 2026NCT05397093studyFirstPostDate: changed