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Phase 1 Study of LOP628 in Adult Patients With cKit-positive Solid Tumors and Acute Myeloid Leukemia

A Phase I, Multicenter, Open-label Dose Escalation and Expansion Study of LOP628, Administered Intravenously in Adult Patients With cKit-positive Tumors and Acute Myeloid Leukemia

Status
Terminated
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02221505
Enrollment
3
Registered
2014-08-20
Start date
2014-12-31
Completion date
2015-03-31
Last updated
2016-04-05

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

Conditions

AML, cKIT-positive Solid Tumors

Keywords

LOP628,, cKit,, ADC,, Antibody drug conjugates,, maytansine

Brief summary

LOP628 is an antibody-drug conjugate (ADC) consisting of an anti-cKit humanized IgG1/κ antibody conjugated to a maytansine payload via a non-cleavable linker. LOP628 provides an opportunity to target cKit overexpressing tumors.

Interventions

DRUGLOP628

Sponsors

Novartis Pharmaceuticals
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

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

Inclusion criteria

For patients with solid tumors: * documented cKit-positive neoplasms * Patient must have progressive disease as defined by any of the following: * SCLC: patient has progressed after at least 1 prior therapy * GIST : patient has relapsed or has refractory disease, and no further approved effective therapeutic option exists * Patients with other cKit-positive solid tumors: patient has progressed after at least one prior line of therapy and no further approved effective therapeutic option exists * Patient has measurable disease as per RECIST v1.1 criteria For patients with AML: * documented cKit-positive acute myelogenous leukemia * Consent to newly obtained bone marrow aspirate * Patient must have progressive disease defined as relapsed or refractory non-PML AML following standard therapy or for whom no effective therapy exists. * Blast count \< 50,000/mm3

Exclusion criteria

For patients with solid tumors: * Patient has central nervous system (CNS) metastatic involvement unless the CNS metastases have been previously treated and the patient is clinically stable and on a stable dose of corticosteroids for at least 4 weeks prior to enrollment. * Patient has the presence of other clinically significant hematologic, cardiac, respiratory, gastrointestinal, renal, hepatic or neurological conditions. * Patient has a history of serious allergic reactions, which in the opinion of the investigator may pose an increased risk of serious infusion reactions * Patient has been previously treated with cKit directed antibodies * Pregnant or nursing women For patients with AML: * Patient has received prior allogeneic bone marrow transplant (BMT). * Patient has the presence of other clinically significant cardiac, respiratory, gastrointestinal, renal, hepatic or neurological disease * Patient has a history of serious allergic reactions, which in the opinion of the investigator may pose an increased risk of serious infusion reactions * Patient has been previously treated with cKit directed antibodies * Pregnant or nursing women

Design outcomes

Primary

MeasureTime frameDescription
Incident rate of dose limiting toxicities (DLTs)Month 12To estimate the maximum tolerated dose/recommended dose for expansion (MTD/RDE)

Secondary

MeasureTime frameDescription
Incidence of adverse events (AEs) and serious adverse events (SAE)30 monthsCharacterize the safety and tolerability of LOP628
Serum PK parameters (AUC, Cmax, Tmax, and half-life)30 monthsTo characterize the pharmacokinetic profile of LOP628
Serum concentration vs. time profiles30 monthsTo characterize the pharmacokinetic profile of LOP628.
Overall response rate (ORR)30 monthsTo assess the preliminary anti-tumor activity of LOP628
Duration of response (DOR)30 monthsTo assess the preliminary anti-tumor activity of LOP628
Severity of adverse events (AEs) and serious adverse events (SAEs)30 monthsCharacterize the safety and tolerability of LOP628
Disease Control Rate (DCR) at 4 months4 monthsTo assess the preliminary anti-tumor activity of LOP628
Best overall response (BOR)30 monthsTo assess the preliminary anti-tumor activity of LOP628 in patients
Best Overall Response (AML)30 monthsTo assess the preliminary anti-tumor activity of LOP628
Duration of response (DOR) (AML)30 monthsTo assess the preliminary anti-tumor activity of LOP628
Event Free Survival (EFS) (AML)30 monthsTo assess the preliminary anti-tumor activity of LOP628
Progression Free Survival (PFS)30 monthsTo assess the preliminary anti-tumor activity of LOP628

Countries

Australia, Belgium, Netherlands, Spain

Outcome results

None listed

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