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Clinical Trial Details — Status: Terminated

Administrative data

NCT number NCT05099549
Other study ID # AFM24-SNK01-103
Secondary ID
Status Terminated
Phase Phase 1/Phase 2
First received
Last updated
Start date November 3, 2021
Est. completion date September 21, 2023

Study information

Verified date July 2023
Source NKGen Biotech, Inc.
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

This is an open-label, multi-center study to evaluate the safety, tolerability, and anti-tumor activity of SNK01 in combination with AFM24 in subjects with advanced or metastatic EGFR-expressing cancers.


Description:

The study will be conducted in two phases. The Phase 1/dose escalation phase will gather preliminary safety and tolerability data for escalating doses of AFM24 in combination with SNK01 at a fixed dose in order to determine the MTD/RP2D for the combination dose regimen to be used in the Phase 2a/expansion. The Phase 2a/expansion portion of the study will gather additional safety, tolerability, efficacy, and anti-tumor activity information for the combination of AFM24 with SNK01 in subjects with three types of advanced or metastatic EGFR-expressing cancers.


Recruitment information / eligibility

Status Terminated
Enrollment 11
Est. completion date September 21, 2023
Est. primary completion date September 21, 2023
Accepts healthy volunteers No
Gender All
Age group 18 Years and older
Eligibility Key Inclusion Criteria: 1. Capable of giving signed informed consent 2. Males and females age = 18 years 3. Phase 1/Dose Escalation : any histologically confirmed advanced or metastatic EGFR-positive malignancy for which all standard of care treatment options have been received and are no longer effective or are considered inappropriate at the discretion of the investigator. 4. Phase 2a/Expansion : histologically confirmed advanced or metastatic EGFR positive malignancy of mCRC (EXP-1 cohort), SCCHN (EXP-2 cohort) or NSCLC (EXP-3 cohort). 5. Additional Criteria for Phase 2a/Expansion: subjects must have a disease history specific to their disease as listed below: 1. EXP-1: mCRC. Metastatic colorectal cancer (mCRC) MSI low/DNA mismatch repair proficient. Subjects must have received = 1 lines of previous combination therapy and must have been exposed to oxaliplatin, irinotecan, a fluoropyrimidine, a VEGF targeting agent and, if considered appropriate by the treating physician, an EGFR targeted antibody. 2. EXP-2: SCCHN. Subjects with advanced or metastatic SCCHN whose disease has progressed after having received = 1 prior lines of therapy for advanced disease, which must have included platinum-based therapy, fluoropyrimidine, and an anti PD 1/PD-L1 antibody. 3. EXP-3: NSCLC. Subjects with advanced or metastatic EGFR-expressing NSCLC (EGFR WT) whose disease has progressed after having received = 1 prior lines of therapy for advanced disease. Subjects must have received at least a platinum-based doublet in combination with anti-PD1/PD-L1 antibody or must have received a platinum-based doublet followed by an anti-PD1/PD-L1 antibody. 6. One or more measurable tumors lesions per RECIST v1.1 7. Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1 8. Adequate bone marrow, hepatic and renal function. Key Exclusion Criteria: 1. Superior vena cava syndrome contra-indicating hydration 2. Untreated or symptomatic central nervous system (CNS) metastases 3. No resolution of specific toxicities related to any prior anti-cancer therapy to Grade = 1 according to the NCI-CTCAE v.5.0 (except peripheral or motor neuropathy, lymphopenia and alopecia) 4. Treatment with systemic anticancer therapy or an investigational device within 4 weeks (6 weeks if therapy was mitomycin C and/or nitrosoureas), or within 5 half-lives of the agent (if half-life is known and it is shorter) before the first dose of study treatment. 5. Radiation therapy within 2 weeks before first dose of any study treatment or unresolved (NCI CTCAE v5.0 Grade > 1) toxicity from previous radiotherapy 6. Clinically significant cardiovascular disease 7. Major surgery within 4 weeks prior to any study treatment administration 8. Any pulmonary, thyroid, renal, hepatic severe/uncontrolled concurrent medical disease that in the opinion of the Investigator could cause unacceptable safety risks or compromise compliance with the protocol 9. Active uncontrolled viral, fungal, or bacterial infection requiring systematic therapy within 14 days prior to first dose of study treatment. 10. Known history of testing positive for human immunodeficiency virus (HIV), and/or positive test for Hepatitis B virus surface antigen (HBsAg) and/or positive Hep C antibody result with detectable hepatitis C virus (HCV) ribonucleic acid (RNA) indicating acute or chronic infection. 11. Autoimmune disease requiring therapy; immunodeficiency, or any disease process requiring systemic immunosuppressive therapy 12. A serious nonmalignant disease that could compromise protocol objectives in the opinion of the Investigator and/or the Sponsor 13. Any other condition that, in the opinion of the Investigator, would prohibit the subject from participating in the study

Study Design


Intervention

Drug:
AFM24
Tetravalent, bispecific EGFR- and CD16A-binding innate cell engager.
Biological:
SNK01
Patient-specific ex-vivo expanded autologous natural killer cells.

Locations

Country Name City State
United States University of Chicago Chicago Illinois
United States USC/Norris Comprehensive Cancer Center Los Angeles California
United States Sarcoma Oncology Center Santa Monica California

Sponsors (2)

Lead Sponsor Collaborator
NKGen Biotech, Inc. Affimed GmbH

Country where clinical trial is conducted

United States, 

Outcome

Type Measure Description Time frame Safety issue
Primary Phase 1/Dose Escalation Determine the maximum tolerated dose (MTD) of AFM24 in combination with SNK01. To be assessed by the incidence and severity of dose-limiting toxicity (DLT) within the DLT observation period. 28 days starting on cycle 1 day 1
Primary Phase 1/Dose Escalation Determine the recommended phase 2 dose (RP2D) of AFM24 in combination with SNK01.
To be assessed by the incidence and severity of dose-limiting toxicity (DLT) within the DLT observation period.
28 days starting on cycle 1 day 1
Primary Phase 2a/Expansion Determine objective response rate (ORR) of AFM24 in combination with SNK01. Determine ORR using Response Evaluation Criteria in Solid Tumors (RECIST), Version 1.1 Up to 24 months
Secondary Phase 1/Dose Escalation Assess safety and tolerability of AFM24 in combination with SNK01. Determine frequency and severity of treatment-emergent AEs (TEAEs) per National Cancer Institute's Common Toxicity Criteria for Adverse Events (NCI CTCAE v 5.0). Up to 24 months
Secondary Phase 1/Dose Escalation Determine preliminary efficacy of AFM24 in combination with SNK01. Determine ORR using RECIST v1.1 evaluated by local assessment. Up to 24 months
Secondary Phase 1/Dose Escalation Maximum observed plasma concentration (Cmax) of AFM24 28 days starting on cycle 1 day 1
Secondary Phase 1/Dose Escalation Time to maximum plasma concentration (Tmax) of AFM24 28 days starting on cycle 1 day 1
Secondary Phase 1/Dose Escalation Minimum plasma concentration (Cmin) of AFM24 28 days starting on cycle 1 day 1
Secondary Phase 1/Dose Escalation Area under plasma concentration-time curve for dosing interval (AUCtau) of AFM24 28 days starting on cycle 1 day 1
Secondary Phase 1/Dose Escalation Immunogenicity of AFM24 when AFM24 is given in combination with SNK01 Frequency of subjects developing AFM24 anti drug antibodies (ADAs) through completion of the Phase 1/dose escalation portion Up to 24 months
Secondary Phase 2a/Expansion Safety and tolerability of AFM24 in combination with SNK01 Frequency of TEAEs graded according to NCI CTCAE v 5.0 Up to 24 months
Secondary Phase 2a/Expansion To assess progression-free survival (PFS) according to RECIST v1.1 by local assessment Assess the number of subjects with PFS defined as duration of time from start of combination treatment to date of progression. Up to 24 months
Secondary Phase 2a/Expansion To assess overall survival (OS). Up to 24 months
Secondary Phase 2a/Expansion To assess duration of response (DOR) according to RECIST v1.1 by local assessment. Up to 24 months
Secondary Phase 2a/Expansion To assess clinical benefit rate (CBR) according to RECIST v1.1 by local assessment. Up to 24 months
Secondary Phase 2a/Expansion Maximum observed plasma concentration (Cmax) of AFM24. 28 days starting on cycle 1 day 1
Secondary Phase 2a/Expansion Time to maximum plasma concentration (Tmax) of AFM24. 28 days starting on cycle 1 day 1
Secondary Phase 2a/Expansion Minimum plasma concentration (Cmin) of AFM24. 28 days starting on cycle 1 day 1
Secondary Phase 2a/Expansion Area under plasma concentration-time curve for dosing interval (AUCtau) of AFM24. 28 days starting on cycle 1 day 1
Secondary Phase 2a/Expansion Immunogenicity of AFM24 when AFM24 is given in combination with SNK01 Frequency of subjects developing AFM24 ADAs and frequency of subjects developing neutralizing ADAs. Up to 24 months
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