Phase I Study of [225Ac]Ac-ETN029 in Patients With Advanced DLL3-expressing Solid Tumors
Purpose
The purpose of this study is to evaluate the safety, tolerability, dosimetry and preliminary efficacy of [225Ac]Ac-ETN029 and the safety and imaging properties of [111In]In-ETN029 in patients aged ≥ 18 years with locally advanced or metastatic DLL3 positive cancers.
Conditions
- Small Cell Lung Carcinoma
- Large Cell Neuroendocrine Carcinoma of the Lung
- Neuroendocrine Prostate Cancer
- Gastroenteropancreatic Neuroendocrine Carcinoma
Eligibility
- Eligible Ages
- Between 18 Years and 100 Years
- Eligible Sex
- All
- Accepts Healthy Volunteers
- No
Inclusion Criteria
- Age ≥ 18 years old - Patients with one of the following indications: - Locally advanced, unresectable, or metastatic SCLC with disease progression following, or intolerance to, at least 1 line of systemic therapy, including platinum-containing chemotherapy, unless patient was ineligible to receive such therapy. Prior DLL3-targeted therapy is allowed. For dose expansion, patients should have received no more than 2 prior lines of systemic therapy. - Dose escalation only: LCNEC of the lung with disease progression following, or intolerance to, at least 1 line of systemic therapy, including platinum-containing chemotherapy, unless patient was ineligible to receive such therapy. - Dose expansion only: Locally advanced, unresectable, or metastatic de novo or castration-resistant, treatment-emergent NEPC with neuroendocrine differentiation confirmed by local histology and NEPC marker expression (e.g., chromogranin, synaptophysin) confirmed by local IHC. Prior PSMA-targeted, Lu-177-based RLT is allowed. Patients must have at least one measurable lesion (per RECIST 1.1) that shows 111In-ETN029 uptake higher than surrounding tissues on SPECT/CT as assessed by the Investigator. - Dose expansion only: Locally advanced, unresectable, or metastatic GEP-NEC with disease progression following, or intolerance to, at least 1 line of systemic therapy, including platinum-containing chemotherapy, unless patient was ineligible to receive such therapy. Patients must have at least one measurable lesion (per RECIST 1.1) that shows 111In-ETN029 uptake higher than surrounding tissues on SPECT/CT as assessed by the Investigator.
Exclusion Criteria
- Absolute neutrophil count (ANC) < 1.0 x 109/L, hemoglobin < 9 g/dL, or platelet count < 75 x 109/L - QT interval corrected by Fridericia's formula (QTcF) ≥ 470 msec - eGFR < 60 mL/min (<0.835 mL/s), calculated using the CKD-EPI 2021 formula or measured - Unmanageable urinary tract obstruction or urinary incontinence - Presence of leptomeningeal disease, of symptomatic CNS metastases or of CNS metastases that require local CNS-directed therapy - History of or current interstitial lung disease or pneumonitis ≥ Grade 2 - Any prior DLL3-targeted therapy (except for SCLC) and any prior RLT (except for NEPC) Other protocol-defined inclusion/exclusion criteria may apply.
Study Design
- Phase
- Phase 1
- Study Type
- Interventional
- Allocation
- N/A
- Intervention Model
- Single Group Assignment
- Primary Purpose
- Treatment
- Masking
- None (Open Label)
Arm Groups
| Arm | Description | Assigned Intervention |
|---|---|---|
|
Experimental Arm 1 |
Patients will receive 225Ac-ETN029, with some patients also receiving 111In-ETN029 |
|
Recruiting Locations
Boston 4930956, Massachusetts 6254926 02114
More Details
- Status
- Recruiting
- Sponsor
- Novartis Pharmaceuticals
Detailed Description
This is a phase I, open-label, multi-center study to evaluate the safety, tolerability, dosimetry, pharmacokinetics (PK), pharmacodynamics (PD), and preliminary efficacy of 225Ac-ETN029 in patients with advanced DLL3-expressing solid tumors. The study consists of a dose escalation part, followed by a dose expansion part. Once the recommended radioactive dose(s) of 225Ac-ETN029 for further clinical evaluation are determined, the dose expansion part will further characterize the safety, tolerability, and preliminary anti-tumor activity of 225Ac-ETN029. The study will also enable an initial evaluation of the safety, dosimetry, PK, and imaging properties of 111In-ETN029.