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Part 1 is an uncontrolled dose de-escalation study to confirm the safety and determine the RP3D of RYZ101 based on Bayesian optimal interval design. Eligible participants will be enrolled in cohorts of 6 to receive RYZ101 up to 4 infusions every 8 weeks. If the initial dose level is not tolerated, the dose will be de-escalated; up to 3 dose levels will be assessed.

Actinium 225 radiolabeled somatostatin analog (SSA) for injection

Investigator's choice of standard of care between everolimus, sunitinib, octreotide, or lanreotide.

RYZ101

Everolimus 10 mg

Sunitinib 37.5 MG

High-dose octreotide LAR 60 mg Q4W by i.m. injection

Octreotide LAR 60 MG Injection

High dose frequency lanreotide 120 mg Q2W by deep s.c. injection

Lanreotide 120Mg Sa Susp Inj Syringe

Denis Ferreira, MD

This study aims to determine the safety, pharmacokinetics (PK) and recommended Phase 3 dose (RP3D) of RYZ101 in Part 1, and the safety, efficacy, and PK of RYZ101 compared with investigator-selected standard of care (SoC) therapy in Part 2 in subjects with inoperable, advanced, well-differentiated, somatostatin receptor expressing (SSTR+) gastroenteropancreatic neuroendocrine tumors (GEP-NETs) that have progressed following treatment with Lutetium 177-labelled somatostatin analogue (177Lu-SSA) therapy, such as 177Lu-DOTATATE or 177Lu-DOTATOC (177Lu-DOTATATE/TOC), or 177Lu-high affinity \[HA\]-DOTATATE.

Study of RYZ101 Compared With SOC in Pts w Inoperable SSTR+ Well-differentiated GEP-NET That Has Progressed Following 177Lu-SSA Therapy

Phase 1b/3 Global, Randomized, Controlled, Open-label Trial Comparing Treatment With RYZ101 to Standard of Care Therapy in Subjects With Inoperable, Advanced, SSTR+, Well-differentiated GEP-NETs That Have Progressed Following Prior 177Lu-SSA Therapy

Incidence and severity of AEs by NCI CTCAE v5, including SAEs, laboratory changes, ECG changes, and other safety findings

Relationship between biomarkers, including but not limited to CgA in the serum and (5-HIAA) in the urine, with AEs of special interest and/or efficacy endpoints (e.g., PFS, OS, BOR, DoR)

Measured by continuous ECG recording using a 12-lead Holter monitoring device

Incidence of DLTs during the first 56 days of study treatment will be assessed.

PFS will be defined as the time from the date of randomization until the date of progression (as determined by BICR from tumor assessments using RECIST v1.1) or death due to any cause, whichever occurs earlier.

Calculated mean TIAC (hours) and absorbed radiation dose coefficients (mGy/MBq) to critical organs (e.g., the kidneys and bone marrow) and tumors after the 1st and 4th RYZ101 infusions will be assessed

OS will be defined as the time from the date of randomization until the date of death due to any cause.

ORR, as determined by BICR according to RECIST v1.1.

ORR, as assessed by the Investigator according to RECIST v1.1

Assessed by BICR and by the Investigator according to RECIST v1.1

Only for subjects with a RECIST v.1.1 response, assessed by BICR and by the Investigator according to RECIST v1.1

Spots Global Cancer Trial Database for sstr+

Every month we try and update this database with for sstr+ cancer trials from around the world to help patients and their families find trials that might be right for them.
We offer this 100% free of charge and do not endorse any of the trials listed here, we hope it helps you or a loved one.

Spots Global Cancer Trial Database for sstr+

Every month we try and update this database with for sstr+ cancer trials from around the world to help patients and their families find trials that might be right for them. We offer this 100% free of charge and do not endorse any of the trials listed here, we hope it helps you or a loved one.

Every month we try and update this database with for sstr+ cancer trials from around the world to help patients and their families find trials that might be right for them.
We offer this 100% free of charge and do not endorse any of the trials listed here, we hope it helps you or a loved one.