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131I-IPA

Phase 1

Neoplastic Disease | Small molecule | Oncology |Telix Pharmaceuticals Limited|Last Updated: Jan 21, 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
UNCONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment12
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT05450744131I-TLX-101 for Treatment of Newly Diagnosed Glioblastoma (IPAX-2)PHASE1 RECRUITING 12Apr 1, 2023Jun 1, 2026Jan 21, 20266 Australia, Austria +1
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Study Endpoints
Primary Endpoints
Incidence rate and the grade (severity) of DLTs
8 weeks from the first dose of IMP until discharge from the second dosem, up to 62 weeks.

Incidence rate and the grade (severity) of DLTs based on the occurrence of Adverse Events (AEs) reported according to the NCI CTCAE v6.0. DLTs include any grade ≥ 3 events considered possibly related to the study drug, but excludes cerebral oedema, and haematological toxicity.

Safety, tolerability and RP2D
From screening until end of study, assessed over 62 weeks. TEAEs - units are frequency (percentage) and severity. Laboratory - safety laboratory including liver functions test, report mean and out of range.

Assessing TEAEs type according to MedDRA (Medical Dictionary for Regulatory Activities), frequency, severity according to National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE) V5.0, seriousness, and relationship of study treatment will be assessed. Laboratory abnormalities will be assessed according to the NCI CTCAE V5.0.

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Study Design & Arms
AllocationNA
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
131I-TLX101 + standard of careEXPERIMENTAL -
Interventions
NameTypeDescription
131I-IPADRUG131I-IPA: injection/solution administrated intravenously via infusion in ascending doses 18F-FET: injection/solution administrated intravenously
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites6

Inclusion Criteria: 1. Understand and voluntarily sign the informed consent form prior to any study related procedure and/or assessments being conducted. 2. Are Male or Female, and aged 18 years or older, at the time of signing the informed consent. 3. Have histologically confirmed intracranial gli...

Countries:AustraliaAustriaNetherlands
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Recent Changes (Last 90 Days)
LOWMay 26, 2026NCT05450744primaryCompletionDate: changed
LOWMay 24, 2026NCT05450744studyFirstPostDate: changed