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4-L-iodo-phenylalanine

Phase 1

Glioblastoma Multiforme | Unknown | Oncology |Telix Pharmaceuticals Limited|Last Updated: Apr 14, 2023

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
RandomizedCONTROLLEDBiomarker
Total Trials1
Total Enrollment10
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT03849105131I-IPA and Concurrent XRT in Recurrent GBMPHASE1 COMPLETED 10Apr 9, 2019Oct 31, 2022Apr 14, 20235 Australia, Austria +1
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Study Endpoints
Primary Endpoints
Safety and tolerability parameter Adverse Events
From first administration of 131I-IPA until 12 months after first administration

Treatment-related adverse events according to NCI-CTCAE v 4.03 criteria will be captured and evaluated for each patient

Safety parameter heart rate
From first administration of 131I-IPA until 12 months after first administration

Frequency of occurrence and severity of abnormal findings as measured by beats per minute

Safety parameter blood pressure
From first administration of 131I-IPA until 12 months after first administration

Frequency of occurrence and severity of abnormal findings as measured by mmHg

Safety parameter Liver function test
From first administration of 131I-IPA until 12 months after first administration

This outcome will be measured on all patients with treatment-related adverse events based on criteria as determined by the NCI CTCAE v 5.0 criteria. Results will be assessed by number of participants with abnormal laboratory values.

Safety parameter Renal function test
From first administration of 131I-IPA until 12 months after first administration

This outcome will be measured on all patients with treatment-related adverse events based on criteria as determined by the NCI CTCAE v 5.0 criteria. Results will be assessed by number of participants with abnormal laboratory values.

Safety parameter Full Blood Count
From first administration of 131I-IPA until 12 months after first administration

This outcome will be measured on all patients with treatment-related adverse events based on criteria as determined by the NCI CTCAE v 5.0 criteria. Results will be assessed by number of participants with abnormal laboratory values.

Secondary Endpoints
To evaluate the maximum tolerated dose (MTD) of 131I -IPA administered concomitantly to 2nd line XRT in recurrent GBM 2
Evaluation of patient up to 30 days after completion of study therapy
To evaluate the efficacy of a fractionated administration of 131I-IPA
Up to 6 months after completion of study therapy
Dosimetry
From date of randomization until the date of first documented progression or date of death from any cause, whichever came first, assessed up to 12 months
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Study Design & Arms
AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Single administration of 131I-IPA (1f group)EXPERIMENTALStudy participants with GBM receive a single administration of 4-L-\[131I\]iodo-phenylalanine (131I-IPA), followed by 18 cycles of external radiotherapy, each cycle being of 2 Gy.
Three administrations of 131I-IPA (3f-parallel group)EXPERIMENTALStudy participants will be administered in 2GBq in 3 fractions corresponding to ⅓ full dose activity (0.67 GBq for the 2.0 GBq dose level). The 1st fraction of 131I-IPA will be administered as above, 1- 3 days prior to 1st XRT. The 2nd and 3rd 131I-IPA fractions will be administered after 5-9 XRT fractions (subject to investigator's discretion and day of IMP administration) following the previous 131I-IPA fraction. The remainder of XRT fractions will be given following the 3rd 131I-IPA fraction.
Three administrations of 131I-IPA (3f-sequential group)EXPERIMENTALStudy participants will be administered in 2GBq in 3 fractions corresponding to ⅓ full dose activity (0.67 GBq for the 2.0 GBq dose level). The 1st fraction of 131I-IPA will be administered as above 1- 3 days prior to 1st XRT. The 2nd 131I-IPA fraction will be administered after all 18 XRT fractions have been completed, and the 3rd 131I-IPA fraction will be administered 1 week after the 2nd 131I-IPA fraction.
Dose escalation of fractionated dosingEXPERIMENTALDose escalation will be made in steps of 2.0 GBq, i.e. 4.0 (3\*1.33 GBq), 6.0 GBq (3\*2.0 GBq), up to 8.0 GBq (3\*2.67 GBq) until the maximum tolerated dose (MTD) is reached, using cohorts of N=3 patients.
Interventions
NameTypeDescription
4-L-[131I]iodo-phenylalanine (131I-IPA)RADIATIONStudy participants will receive by intravenous infusion an escalating activity of 4-L-\[131I\]iodo-phenylalanine (131I-IPA). Additional therapy is received in the form of externally administered radiotherapy
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites5

Inclusion Criteria: 1. Previously confirmed histological diagnosis of GBM, with current clinical or imaging evidence for first recurrence according to modified RANO criteria (2017). History of GBM standard therapy (debulking surgery, followed by radio-chemotherapy (50-60 Gy in 2 Gy fractions, temoz...

Countries:AustraliaAustriaNetherlands
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