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Study of safety and effectiveness of IMU-131 comparing standard care chemotherapy in patients with Adenocarcinoma of the Stomach or Gastroesophageal Junction (a type of gastric cancer).

A Phase 1b/2 Open-label Study with randomization in Phase 2 of IMU-131 HER2/neu Peptide Vaccine Plus Standard of Care Chemotherapy in Patients with HER2/neu Overexpressing Metastatic or Advanced Adenocarcinoma of the Stomach or Gastroesophageal Junction. - IMU-131

Status
Active, not recruiting
Phases
Phase 2
Study type
Interventional
Source
CTRI
Registry ID
CTRI/2019/04/018775
Enrollment
68
Registered
2019-04-24
Start date
Unknown
Completion date
Unknown
Last updated
2021-11-24

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

Conditions

Health Condition 1: K318- Other specified diseases of stomach and duodenum

Interventions

Intervention1: IMU-131 HER2/neu Peptide Vaccine: Phase 2 is an open-label, randomized, multicenter study designed to assess the clinical activity, immunogenicity, safety and tolerability of IMU-131. T

Sponsors

Imugene Limited
Lead Sponsor
PPD Pharmaceuticals India Private Limited
Collaborator

Eligibility

Inclusion criteria

Inclusion criteria: 1. Patient has been informed of the investigational nature of this study and has given written informed consent in accordance with institutional local and national guidelines 2. Age more than and equal to 20 years old 3. Life expectancy of at least 12 weeks 4. No prior chemotherapy or radiotherapy for advanced gastric or GEJ cancer within 3 months prior to Day 0 5. Metastatic gastric or GEJ adenocarcinoma or locally advanced disease not amenable to surgical resection 6. HER2/neu overexpression (3+ by immunohistochemistry (IHC) or if IHC 2+ confirmed by fluorescent in situ hybridization FISH] or chromogenic in situ hybridization [CISH]). Patients with IHC 2+ expression without confirmation of overexpression by fluorescent in situ hybridization [FISH] or chromogenic in situ hybridization [CISH]) may be included in Phase 1b with agreement of Imugene Limited 7. ECOG performance status 0â??2 8. At least one measurable lesion as defined by RECIST 1.1 criteria. Patients with non-measurable lesions may be included in Phase1b with agreement of Imugene Limited 9. Adequate left ventricular ejection function at baseline defined as LVEF > 50% by echocardiogram or MUGA scan (Multi Gated Acquisition Scan) 10. Adequate hematologic function absolute neutrophil count (ANC) >= 1.5 x 109/L, platelet count >= 100 x 109/L, and hemoglobin >= 9 g/dL; 11. Adequate liver function evidenced by bilirubin normal [ULN] and ALT and AST 12. Adequate renal function (creatinine 13. Willing and able to comply with scheduled visits treatment plan laboratory tests and other study procedures 14. Male and female patients of childbearing potential must agree to use a highly effective method of contraception throughout the study and for at least 28 days after the last dose of assigned treatment . A patient is of childbearing potential if, in the opinion of the investigator, he/she is biologically capable of having children and is sexually active.

Exclusion criteria

Exclusion criteria: 1. Previous treatment with trastuzumab or any other HER2/neu targeting antibody or agent 2. Continuous systemic treatment with either corticosteroids (Greater than 10 mg daily prednisone equivalents) or other immunosuppressive medications within 4 weeks prior to first dose of study treatment. Inhaled or topical steroids and physiological replacement doses of up to 10 mg daily prednisone equivalents are permitted in the absence of active auto-immune disease 3. Prior organ transplant 4. Patient not considered a candidate for 5-FU, capecitabine,cisplatin or oxaliplatin chemotherapy; 5. History of documented congestive heart failure; angina pectoris requiring antianginal medication; evidence of transmural infarction on ECG; poorly controlled hypertension; clinically significant valvular heart disease; high risk uncontrolled arrhythmias; or New York Heart Association (NYHA) class II heart disease; 6. If on warfarin (Coumadin®) or other vitamin K antagonists; 7. Concurrent active malignancy except for adequately controlled limited basal cell carcinoma of the skin 8. Peripheral neuropathy or hearing loss of NCI CTCAE Grade greater than and equal to 2 9. History of uncontrolled seizures, central nervous disorders or psychiatric disability judged by the investigator to be clinically significant and precluding informed consent, participation in the study, or adversely affecting compliance to study drugs; 10. Active infection requiring IV antibiotics; 11. Positive for human immunodeficiency virus (HIV) (HIV 1/2 antibodies) or active hepatitis B (HBsAg reactive) or active hepatitis C (HCV ribonucleic acid [RNA] qualitative) infection; 12. Pregnant or lactating females; 13. Major surgery within 4 weeks prior to study entry. Minor surgery (excluding diagnostic biopsy) within 1 week prior to study entry; 14. Has received a live-virus vaccination within 4 weeks of first study vaccination. Seasonal flu vaccines that do not contain live virus are permitted; 15. Current or recent (within 4 weeks of first IMU-131 vaccination) treatment with another investigational drug or participation in another investigational study. 16. Phase 2: Patients with a known diphtheria toxoid hypersensitivity.

Design outcomes

Primary

MeasureTime frame
To evaluate the clinical efficacy of IMU-131 plus chemotherapy compared to chemotherapy alone based on overall survival (OS).Timepoint: 22 Months

Secondary

MeasureTime frame
To evaluate other efficacy measures of IMU-131 plus chemotherapy compared to chemotherapy alone including progression-free survival (PFS), time to progression (TTP), disease control rate (DCR), objective response rate (ORR), duration of objective response (DOR) and change in tumor size (CTS) according to Response Evaluation Criteria In Solid Tumors version 1.1 (RECIST 1.1) for the progression evaluation of radiographic data.Timepoint: 22 Months

Countries

Georgia, Hong Kong, India, Taiwan, Thailand, Ukraine

Contacts

Public ContactRashmi Chitgupi

PPD Pharmaceutical Development India Private Limited

Rashmi.Chitgupi@ppdi.com912266022900

Outcome results

None listed

Source: CTRI (via WHO ICTRP) · Data processed: Feb 4, 2026