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GEH200520/GEH200521

Phase 1

Malignant Solid Tumor | Small molecule | Oncology |GE HealthCare Technologies Inc.|Trials Updated: Nov 17, 2025

Success Probability

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Trial Design

CONTROLLEDDMC
Total Trials1
Total Enrollment50

FDA Designations

No designations recorded

GEH200520/GEH200521 clinical trials

GEH200520/GEH200521 · 1 trial · 2 indications

Phase 1 1
NCT05629689A Study to Evaluate GEH200520/GEH200521 (18F) Safety and Tolerability When Used for PET Scans in Patients With Solid Tumour MalignanciesMalignant Solid Tumor
RECRUITING50 Analytics
PHASE1RECRUITING
A Study to Evaluate GEH200520/GEH200521 (18F) Safety and Tolerability When Used for PET Scans in Patients With Solid Tumour Malignancies
Malignant Solid TumorUnlock trial analytics

Study Endpoints

Primary Endpoints

Part A: The incidence of AEs upon causality to the IMPs.
Part A: 7 days
Part A: The severity of AEs per National Cancer Institute's Common Terminology Criteria for Adverse Events (NCI CTCAE version 5.0) upon causality to the IMPs.
Part A: 7 days
To evaluate the time-course changes in GEH200521 (18F) Injection uptake after immune-checkpoint inhibitor (ICI) treatment cycles compared to baseline.
Part B: 50 days

Secondary Endpoints

To evaluate the radiation dosimetry of a fixed dose of GEH200521 (18F) Injection when administered with the different GEH200520 Injection mass doses by cumulated activity in source regions and by entire body.
7 days
To evaluate the optimal imaging time window for GEH200521 (18F) Injection positron emission tomography (PET) imaging when administered with different GEH200520 Injection mass doses for Part A subjects.
7 days
To determine the appropriate mass dose of GEH200520 Injection for administration with GEH200521 (18F) Injection to achieve an acceptable PET image quality for Part A subjects.
7 days
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Study Design & Arms

AllocationNON_RANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeDIAGNOSTIC

Treatment Arms

ArmTypeDescription
Part A Cohort 1 - 1 mg doseEXPERIMENTAL1 mg mass dose of GEH200520 Injection with fixed dose of GEH200521 (18F) Injection administered together
Part A Cohort 2 - 2 mg doseEXPERIMENTAL2 mg mass dose of GEH200520 Injection with fixed dose of GEH200521 (18F) Injection administered together
Part A Cohort 3 - 4 mg doseEXPERIMENTAL4 mg mass dose of GEH200520 Injection with fixed dose of GEH200521 (18F) Injection administered together
Part A Cohort 4 - 8 mg doseEXPERIMENTAL8 mg mass dose of GEH200520 Injection with fixed dose of GEH200521 (18F) Injection administered together
Part A Cohort 5 (optional) - 12 or 15 mg doseEXPERIMENTAL12 or 15 mg mass dose of GEH200520 Injection with fixed dose of GEH200521 (18F) Injection administered together
Part A Cohort 6 - Optimal doseEXPERIMENTALSelected (optimal) mass dose as determined from results of Cohorts 1 through 5 of GEH200520 Injection with fixed dose of GEH200521 (18F) Injection administered together
Part BEXPERIMENTALSelected (optimal) dose of GEH200520 Injection from Part A with fixed dose of GEH200521 (18F) Injection administered together in 3 sequential repeat imaging visits

Interventions

NameTypeDescription
GEH200520 Injection / GEH200521 (18F) Injection - Part ADRUGAdministration of GEH200520 Injection followed within 2 to 4 minutes by GEH200521 (18F) Injection followed by a 10mL saline flush
Dynamic and Static - PET/CT scanDIAGNOSTIC_TESTDynamic whole-body PET/CT scan starting at the time of injection (sequential scans over 90 minutes anticipated) followed by static whole-body scans starting at 150 minutes, 270 minutes, and (optional) 24 hours after injection.
GEH200520 Injection / GEH200521 (18F) Injection - Part BDRUGAdministration of GEH200520 Injection followed within 2 to 4 minutes by GEH200521 (18F) Injection followed by a 10mL saline flush
Static - PET/CT scanDIAGNOSTIC_TESTWhole-body PET/CT scan (up to 30 min). Exact timing will be determined from Part A. An optional dynamic scan may be acquired in addition to the required whole-body PET/CT scan at each imaging visit.
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites2

Inclusion Criteria: * The subject is able and willing to comply with all study procedures as described in the protocol, including the imaging day pre-visit requirements, and has read, signed, and dated an informed consent form prior to any study procedures being performed. * The subject is male or ...

Countries:Netherlands
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Frequently asked questions about GEH200520/GEH200521

What is GEH200520/GEH200521?

GEH200520/GEH200521 is an investigational small molecule imaging agent being developed for PET scans in patients with malignant solid tumors. It is being studied in a Phase 1 trial to evaluate its safety and tolerability when used for PET imaging in patients with solid tumor malignancies.

What is GEH200520/GEH200521 used for?

GEH200520/GEH200521 is being studied for use in PET scans in patients with malignant solid tumors. The Phase 1 trial is designed to evaluate the safety and tolerability of the agent when used for PET imaging in this patient population.

Who is developing GEH200520/GEH200521?

GEH200520/GEH200521 is being developed by GE HealthCare Technologies Inc., which trades under the ticker GEHC. The company is running a Phase 1 study of the imaging agent in patients with solid tumor malignancies.

What phase is GEH200520/GEH200521 in?

GEH200520/GEH200521 is in Phase 1 clinical development. It is investigational and is being evaluated in a single recruiting trial, with no completed trials reported to date.

What clinical trials is GEH200520/GEH200521 in?

GEH200520/GEH200521 is being studied in the Phase 1 trial NCT05629689, titled a study to evaluate GEH200520/GEH200521 (18F) safety and tolerability when used for PET scans in patients with solid tumour malignancies. The trial is recruiting in the Netherlands and plans to enroll 50 participants.