A Phase II, Open-Label, Multi-Center Study to Evaluate Efficacy, Safety and Tolerability of KN026 in Combination With KN046 in Patients With Locally Advanced Unresectable or Metastatic HER2-positive Solid Tumors

Jiangsu Alphamab Biopharmaceuticals Co., Ltd1 site in 1 country102 target enrollmentDecember 7, 2020

ConditionsHER2-positive Solid Tumors

InterventionsKN026 combination

DrugsKN026 combination

Overview

Phase: Phase 2
Intervention: KN026 combination
Conditions: HER2-positive Solid Tumors
Sponsor: Jiangsu Alphamab Biopharmaceuticals Co., Ltd
Enrollment: 102
Locations: 1
Primary Endpoint: Duration of response (DOR)
Status: Completed
Last Updated: 2 years ago

Overview Investigators Eligibility Criteria Arms & Interventions Outcomes Sites Similar Trials

Overview

Brief Summary

This is an open-label, phase II，multi-center study to evaluate the efficacy, safety and tolerability of KN026 in combination with KN046 in subjects with HER2-positive solid tumors.

Detailed Description

KN026 is an anti-HER2 bispecific antibody that can simultaneously bind two non-overlapping epitopes of HER2, leading to a dual HER2 signal blockade.KN046 is a PD-L1 - CTLA-4 bispecific antibody. The study composes of two stages. The first stage plans to enroll HER2-positive solid tumors. All subjects will be treated with KN026 at 30 mg/kg Q3W in combination with KN046 at 5 mg/kg Q3W at the first stage.A SMC meeting will decide whether to proceed to the nest stage.

Registry

clinicaltrials.gov

Start Date

December 7, 2020

End Date

May 22, 2023

Last Updated

2 years ago

Study Type

Interventional

Study Design

Sequential

Sex

All

Investigators

Sponsor

Jiangsu Alphamab Biopharmaceuticals Co., Ltd

Responsible Party

Sponsor

Eligibility Criteria

Inclusion Criteria

•The subject can understand the informed consent, voluntarily participate and sign the informed consent ;
•Subjects are older than or equal to 18 years old and younger than or equal to 75 years old on the day of signing the informed consent；
•Histologically or cytologically confirmed, metastatic or locally advanced unresectable HER2-positive solid tumors;
•Prior antitumor therapy needs to meet the following conditions:
•Her2-positive GC/GEJ: has not received prior systemic treatment for metastatic or locally advanced unresectable GC/GEJ, or has received prior systemic treatment≥1 line of systemic treatment with disease progression, front-line systemic treatment includes at least platinum or fluorouracil based chemotherapy with or without trastuzumab; Subjects who relapsed within 6 months after the end of neoadjuvant/adjuvant chemotherapy were considered as line 1 treatment failure; Her2-positive BC: prior treatment with ≥1 line of HER2-targeted therapy for metastatic disease and disease progression; Subjects who relapsed within 12 months after the end of neoadjuvant/adjuvant chemotherapy were considered as line 1 treatment failure; Other HER2-positive solid tumors: previous ≥1 line of systemic therapy for metastatic or locally advanced unresectable tumors with disease progression, no clear standard therapy for prolongation of survival, or after subjects rejected 1 line of systemic therapy; Frontline systemic therapy for ovarian and cervical cancer includes at least platinum-based (cisplatin or carboplatin) chemotherapy; Frontline systemic therapy for ESCC and mCRC includes at least platinum combined with fluorouracil or tax-based chemotherapy; MCRC requires ≥2 lines of systemic therapy for metastatic or locally advanced unresectable tumors and disease progression; Subjects who relapsed within 6 months after completion of neoadjuvant/adjuvant platinum-containing chemotherapy Line 1 treatment failure;
•At least 1 measurable lesion at baseline according to RECIST1.1 criteria；
•ECOG score 0 or 1;
•Left ventricular ejection fraction (LVEF) ≥ 50% at baseline as determined by either ECHO (preferred) or MUGA;
•Liver function met the following criteria within 7 days prior to initial administration:
•Total bilirubin ≤1.0x ULN (Gilbert's syndrome, or total bilirubin ≤1.5x ULN in liver metastases); Aminotransferase (ALT/AST) ≤1.5x ULN (liver metastatic subjects ≤3xULN); -Renal function within 7 days prior to initial administration: serum creatinine ≤1.5x ULN and serum creatinine clearance ≥60mL/min (according to Cockcroft-Gault Formula calculation);

Exclusion Criteria

•Untreated active brain metastasis or leptomeningeal metastasis;
•Historyof Left ventricular ejection fraction (LVEF) decline to \< 45% or absolute decrease for \> 15% during the treatment course from prior HER2-targeted therapy;
•Previous cumulative doses of anthracycline exceeded doxorubicin or liposomal doxorubicin \>320mg/m2 or equivalent doses of other anthracyclines;
•Has received other anti-tumor treatment or an investigational drug within 28 days or 5 half-lives prior(whichever is shorter, but at least 2 weeks) to the first trial treatment;
•Major surgery (transabdominal, transthoracic, etc.) within 28 days prior to initial administration; Diagnostic puncture or peripheral vascular is not included pathway replacement)
•Radical radiotherapy within 3 months prior to initial administration; Palliative radiotherapy is allowed 2 weeks before administration, and the dose of radiotherapy is in line with local palliative the diagnosis and treatment standard of sexual therapy and the coverage of radiotherapy is less than 30% of the bone marrow region;
•Prior treatment with immune checkpoint blockers or T cell costimulators;
•Systemic corticosteroid or immunosuppressant therapy is required for 7 consecutive days within 14 days of initial dosing
•Received live vaccines (including attenuated live vaccines) within 28 days of initial administration;
•Have interstitial lung disease or a history of non-infectious pneumonia requiring oral or intravenous glucocorticoid treatment;

Arms & Interventions

KN026 combined with KN046

KN026 combination therapy

Intervention: KN026 combination

Outcomes

Primary Outcomes

Duration of response (DOR)

Time Frame: Throughout the duration of the study; up to 2 years

Duration of response (DOR) as assessed by the investigator according to RECIST 1.1 criteria

Objective response rate (ORR )

Time Frame: Throughout the duration of the study; up to 2 years

Objective response rate as assessed by the investigator according to RECIST 1.1 criteria

Secondary Outcomes

Progression free survival (PFS) rates(6 months and 12 months)
Clinical benefit rate (CBR)(CBR calculated as the proportion of subjects with best overall response of CR, PR, or SD ≥24 weeks)
Overall survival (OS)(6 months and 12 months)