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Study protocol title: A Phase I/II, open-label, multi-center trial of [177Lu]Lu-NeoB in combination with capecitabine in adult patients with gastrin releasing peptide receptor positive, estrogen receptor-positive, human epidermal growth receptor-2 negative metastatic breast cancer after progression on previous endocrine therapy in combination with a CDK4/6 inhibitor

Status
Recruiting
Phases
Phase 1Phase 2
Study type
Interventional
Source
EU CTIS
Registry ID
CTIS2023-506717-21-00
Acronym
CAAA603D12101
Enrollment
40
Registered
2024-04-23
Start date
2024-10-02
Completion date
Unknown
Last updated
2025-12-23

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Breast Cancer

Brief summary

Phase I: Incidence and severity of AEs including dose limiting toxicities (DLTs), serious Adverse Events (SAEs), changes in laboratory parameters, vital signs and ECGs Tolerability: Dose interruptions, discontinuations, and reductions Phase II: ORR, CBR, TTR, DOR, PFS as per RECIST v1.1 by local investigator assessment Overall Survival (OS)

Detailed description

Phase I and II: ● Time activity curves (TACs) and absorbed radiation doses of [177Lu]Lu-NeoB in organs and tumor lesions ● Concentration of [177Lu]Lu-NeoB in blood over time and derived PK parameters, Phase I and II: ● Incidence and severity of adverse events following [68Ga]Ga-NeoB administration at screening, Phase I and II: ● Positive Percent Agreement (PPA) and Positive Predictive Agreement (PPrA) using conventional imaging as reference by central assessment, at screening, Phase I only: ● Visual assessment of image quality by central assessment, Phase I only: ● ORR, CBR, TTR, DOR, PFS as per RECIST v1.1 by local investigator assessment ● OS, Phase II only: ● Incidence and severity of AEs, SAEs, changes in laboratory parameters, vital signs and ECGs Dose interruptions, discontinuations, and reductions

Interventions

DRUGAAA503
DRUGCAPECITABINE
DRUGLEUPRORELIN
DRUGGOSERELIN
DRUGTRIPTORELIN

Sponsors

Novartis Pharma AG
Lead SponsorINDUSTRY

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Design outcomes

Primary

MeasureTime frame
Phase I: Incidence and severity of AEs including dose limiting toxicities (DLTs), serious Adverse Events (SAEs), changes in laboratory parameters, vital signs and ECGs Tolerability: Dose interruptions, discontinuations, and reductions Phase II: ORR, CBR, TTR, DOR, PFS as per RECIST v1.1 by local investigator assessment Overall Survival (OS)

Secondary

MeasureTime frame
Phase I and II: ● Time activity curves (TACs) and absorbed radiation doses of [177Lu]Lu-NeoB in organs and tumor lesions ● Concentration of [177Lu]Lu-NeoB in blood over time and derived PK parameters, Phase I and II: ● Incidence and severity of adverse events following [68Ga]Ga-NeoB administration at screening, Phase I and II: ● Positive Percent Agreement (PPA) and Positive Predictive Agreement (PPrA) using conventional imaging as reference by central assessment, at screening, Phase I only: ● Visual assessment of image quality by central assessment, Phase I only: ● ORR, CBR, TTR, DOR, PFS as per RECIST v1.1 by local investigator assessment ● OS, Phase II only: ● Incidence and severity of AEs, SAEs, changes in laboratory parameters, vital signs and ECGs Dose interruptions, discontinuations, and reductions

Countries

France, Germany, Italy, Netherlands, Portugal, Spain

Outcome results

None listed

Source: EU CTIS · Data processed: Feb 4, 2026