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A Study of the c-Kit Specific Antibody-Drug Conjugate NN3201 for Advanced and/or Metastatic Solid Tumors Known to Express c-Kit

A Phase 1 Dose Escalation and Expansion Study of the c-Kit Specific Antibody-Drug Conjugate NN3201 in Subjects With Advanced and/or Metastatic Solid Tumors Known to Express c-Kit

Status
Recruiting
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06805825
Enrollment
67
Registered
2025-02-03
Start date
2025-02-03
Completion date
2027-12-31
Last updated
2025-09-23

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

Conditions

Adenoid Cystic Carcinoma, Chromophobe Renal Cell Carcinoma, Clear Cell Renal Cell Carcinoma, Gastrointestinal Stromal Tumors, Neuroendocrine Tumors, Small-cell Lung Cancer, Uveal Melanoma

Keywords

GIST, SCLC, ACC, NET, ChRCC, ccRCC, Novelty Nobility, cKit, c-kit, Gastrointestinal Stromal Tumors, Small-cell Lung Cancer, Adenoid Cystic Carcinoma, Uveal Melanoma, Neuroendicrine Tumors, Chromophobe Renal Cell Carcinoma, Clear Cell Renal Cell Carcinoma, advanced GIST, advanced SCLC, advanced ACC, advanced NET, advanced ChRCC, advanced ccRCC

Brief summary

This open-label clinical trial will evaluate the safety and tolerability of NN3201 in subjects with advanced and/or metastatic solid tumors known to express c-Kit.

Detailed description

The drug being tested in this study is called NN3201, a c-Kit targeting fully human monoclonal antibody-drug conjugate with MMAE, administered by IV. The study will be conducted in two parts, a dose escalation phase (Part A) followed by an expansion phase (Part B). The patient population for the dose escalation phase (Part A) of the study will include patients with advanced and/or metastatic c-Kit-associated solid tumors including gastrointestinal stromal tumor (GIST), adenoid cystic carcinoma (ACC), uveal melanoma, neuroendocrine tumors (NET), and chromophobe and clear cell renal cell carcinomas (ChRCC and ccRCC). For Part A patients must have received treatment with imatinimb for GIST or be progressive/refractory, ineligible, or intolerant to available standard therapy (or subject declines standard therapy) for cKit-associated solid tumors (ACC, uveal melanoma, NET, ChRCC, or ccRCC). The primary objective of the dose escalation phase (Part A) is to determine the safety profile of NN3201 administered by IV, including the incidence and severity of adverse events (AEs), serious adverse events (SAEs), and dose-limited toxicities (DLTs) as well as the incidence of abnormal laboratory findings and abnormal vital signs. Part A will help determine the maximum tolerated dose (MTD) and/or the recommended dose(s) (RDEs) for the expansion phase (Part B). Once a recommended dose has been determined in the escalation phase (Part A), the expansion phase (Part B) will assess the safety and efficacy of NN3201 when administered at 2 RDE dose levels to subjects in two indication-specific (GIST and SCLC) expansion cohorts and one basket cohort for c-Kit positive solid tumors (excluding GIST and SCLC). All cohorts in Part B will utilize the same eligibility criteria as in Part A. Cohort B1 - GIST: up to 10 subjects with GIST will be enrolled at the MTD level (RDE1) and efficacy and safety as well as any available PK and PD data will be evaluated. Cohort B2 - SCLC: up to 10 SCLC will be enrolled at 1 dose level below MTD (MTD-1/RDE2) and efficacy and safety as well as any available PK and PD data will be evaluated. The Scientific Review Committee (SRC) may decide to enroll and additional 10 subjects in SCLC subjects. Cohort B3 - c-Kit-associated solid tumors: in this basket cohort, up to 10 subjects with any c-Kit-associated solid tumor (including ACC, uveal melanoma, NET, ChRCC, and ccRCC and excluding GIST and SCLC) will be enrolled. The safety and tolerability of NN3201 administered intravenously (IV) at up to two RDEs in subjects with advanced and/or metastatic solid tumors is the primary objective for Part B.

Interventions

DRUGNN3201

A c-Kit targeting fully human monoclonal antibody-drug conjugate with MMAE administered intravenously.

Sponsors

Novelty Nobility, Inc.
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

Key Inclusion Criteria: Subjects must meet the following criteria to be eligible for enrollment into the study: 1. Histologically or cytologically confirmed locally advanced, metastatic, and/or unresectable GIST, SCLC, ACC, uveal melanoma, NET ChRCC or ccRCC. 2. Subjects must have received the following treatment: Part A (Dose Escalation): i. Treatment with imatinib for GIST (at least one line of therapy with imatinib) or ii. Progressive/refractory, ineligible, or intolerant to available standard therapy (or subject declines standard therapy) for c-Kit-associated solid tumors (ACC, uveal melanoma, NET ChRCC or ccRCC) Part B (Dose Expansion): i. Treatment with imatinib for GIST (at least one line of therapy with imatinib) or ii. Progressive/refractory, ineligible, or intolerant to available standard therapy (or subject declines standard therapy) for Extensive stage SCLC or iii. Progressive/refractory, ineligible, or intolerant to available standard therapy (or subject declines standard therapy) for c-Kit-associated solid tumors (ACC, uveal melanoma, NET or ChRCC or ccRCC). 3. Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1. 4. Life expectancy ≥ 3 months before starting NN3201 in the opinion of the Investigator. 5. Age ≥ 18 years. 6. Laboratory values demonstrating adequately functioning kidney, liver and bone marrow (hematology). 7. Adequate heart function as measured by ECHO/MUGA scan. 8. Time between prior anticancer therapy including investigational agents and first dose of NN3201 as below: 1. Cytotoxic chemotherapy - At least 21 days 2. Non-cytotoxic chemotherapy (e.g., small molecule inhibitor) - At least 14 days 3. Nitrosoureas - At least 6 weeks 4. Monoclonal antibody(ies) - At least 28 days 5. Radiotherapy - At least 14 days from local site radiation therapy 9. Negative Serum/urine pregnancy test (for subjects of childbearing potential) 10. All subjects of childbearing potential must agree to use contraception throughout the study and for additional 120 days after the last dose of assigned treatment. Subjects must refrain from donating sperm during the same period or Subjects who do not have childbearing potential are confirmed post-menopausal or sterile. 11. Voluntary agreement to provide written informed consent and have willingness and ability to comply with all aspects of the protocol. Key

Exclusion criteria

1. Has received prior therapy with a c-Kit agent (except GIST subjects). 2. Known brain metastases that are untreated, symptomatic, or require therapy to control symptoms. 3. A condition requiring systemic treatment with corticosteroids (\>10 mg daily prednisone equivalent) or other immunosuppressive medications within 14 days prior to administration of study drugs (inhaled corticosteroids are allowed). 4. Any prior treatment-related (i.e., chemotherapy, immunotherapy, radiotherapy) clinically significant toxicities that have not resolved to Grade ≤ 1 or prior treatment-related toxicities that are clinically unstable and clinically significant at Study Entry, Day -2 to Cycle 1 Day 1. 5. Major surgery within 30 days before the first dose of study drug treatment in Cycle 1 on Day 1 (port placement for venous access is not considered major surgery). 6. Significant cardiovascular impairment. 7. Significant screening electrocardiogram (ECG) abnormalities. 8. Known active and clinically significant bacterial, fungal, or viral infection. 9. Uncontrolled hypertension defined as systolic blood pressure ≥ 160mmHg and/or diastolic blood pressure ≥ 100mmHg, despite optimal medical management. 10. Venous thrombosis or pulmonary embolism within the last 3 months prior to the screening. 11. Ongoing or active infection requiring intravenous treatment with anti-infective therapy or systemic therapy and/or any identified active COVID-19 infection. 12. Any other major illness that, in the Investigator's judgment, will substantially increase the risk associated with the subject's participation in this study. 13. People who are pregnant or breastfeeding. Other inclusion and

Design outcomes

Primary

MeasureTime frameDescription
Number of subjects with Dose-limiting Toxicities:3 weeksA DLT is defined as an AE that meets at least one of the criteria listed in protocol, according to National Cancer Institute (NCI) common terminology criteria for AE (CTCAE) version 5.0 and is considered by the investigator to be clinically relevant and attributed to the study treatment during the first 21 days after the first dose of study treatment.
Incidence of Adverse Events:1 yearNumber of subjects with adverse events (AEs) according to severity, seriousness, and relationship to study drug

Secondary

MeasureTime frameDescription
Assessment of anti-tumor activity3 yearsAssessment of anti-tumor activity by RECIST 1.1
Pharmacokinetics (PK) of NN32013 yearsPharmacokinetics (PK) of NGM120 by measuring serum concentration of NGM120 at specified timepoints
Choose which dose(s) will be used in the expansion cohorts1 yearAssessing which dose(s) have anti-tumor benefit and an acceptable incidence of adverse events that allow for continued enrollment
Choose which dose(s) may be used in a future study3 yearsAssessing which dose(s) have anti-tumor benefit and an acceptable incidence of adverse events that may be used in a future study.

Other

MeasureTime frameDescription
Changes in Biomarker Levels in Response to TreatmentAt baseline and specified intervals over 3 years.Investigation of changes in specific biomarkers (e.g., soluble c-Kit) during treatment to assess their relationship to treatment response.
Correlation Between Baseline Biomarker Levels and Clinical Response/Toxicity3 yearsAssessment of the relationship between baseline levels of specific biomarkers (e.g., soluble c-Kit, tumor c-Kit expression) and clinical outcomes, including response to treatment and incidence of toxicity.
Correlation Between Pharmacokinetic (PK) and Pharmacodynamic (PD) Variables, Safety, and Efficacy3 yeasEvaluation of the correlation between PK parameters (e.g., Cmax, AUC) and PD effects (e.g., changes in target biomarkers), and their relationship to safety outcomes (e.g., incidence of adverse events) and efficacy outcomes (e.g., objective response rate and progression-free survival).
Immunogenicity against NN32013 yearsImmunogenicity against NN3201 by measuring percentage of subjects to develop antidrug antibodies and neutralizing antibodies

Countries

United States

Contacts

Primary ContactClinical Trial Lead
NN3201@noveltynobility.com1 617.870.7173

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026