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Safety of AM-928 Infusion in Advanced Solid Tumors

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Know the risks and potential benefits of clinical studies and talk to your health care provider before participating. Read our disclaimer for details.
 
ClinicalTrials.gov Identifier: NCT05687682
Recruitment Status : Not yet recruiting
First Posted : January 18, 2023
Last Update Posted : January 18, 2023
Sponsor:
Information provided by (Responsible Party):
AcadeMab Biomedical Inc.

Brief Summary:

This is a Phase I, open-label, dose-escalation study for a novel cancer treatment, AM-928, intravenous infusion antibody for advanced solid tumor. The study is aimed to learn the safety, tolerability, pharmacokinetics, and preliminary efficacy profile of AM-928.

The dose escalation strategy will adopt accelerated titration combined with a Bayesian optimal interval (BOIN) design. Seven dose levels are designed and each participant will be assigned to a specific dose regimen depending on the time of enrollment. In the study, each participant will receive AM-928 treatment cycles till meeting any treatment discontinuation criterion and be followed for safety and long-term survival.

The whole study is expected to take approximately three years to complete.


Condition or disease Intervention/treatment Phase
Advanced Solid Tumor Biological: AM-928 Phase 1

Detailed Description:

This is a first-in-human Phase I, open-label, dose-escalation study to investigate the safety, tolerability, pharmacokinetics (PK), and preliminary efficacy of AM-928 infusion in subjects with advanced solid tumors in multiple sites in Taiwan.

Eligible subjects will be dosed with different dosages of AM-928 in 1 of the 7 dose levels (0.1, 0.3, 1, 3, 6, 10, 15 mg/kg). Dose levels will be escalated from dose Level 1 at 0.3 mg/kg to Level 6 at 15 mg/kg of AM-928 (or may be de-escalated to Level -1 at 0.1 mg/kg), which will be administered (intravenous infusion) once weekly (QW) for 4 weeks (D1, D8, D15, D22) as a treatment cycle until any treatment discontinuation criterion is met. Basically, there will be no breaks between dosing cycles. From Cycle 2, in-patient dosing regimen adjustment may be applied if supported by preliminary safety and PK data.

The dose escalation strategy will adopt accelerated titration combined with a Bayesian optimal interval (BOIN) design. The accelerated titration will be adopted for 0.3 mg/kg and 1 mg/kg, while the BOIN design will be adopted for other dose levels, including 3 mg/kg, 6 mg/kg, 10 mg/kg, and 15 mg/kg. In the "accelerated titration" stage, if any ≥ Grade 2 toxicity occurs, where the causality to IP cannot be clearly ruled out, the current and subsequent dose groups will be changed to the BOIN dose escalation method. The target toxicity rate for the maximum tolerated dose (MTD) is ϕ= 0.3, and the maximum sample size is determined to be 30, maximum of 9 subjects per dose level. A cohort size of 3 and a maximum cohort number of 3 for each dose level will be adopted for subject recruitment. The dose escalation may end when one of the following criteria is met: (1) The planned sample size of 30 has been reached; (2) 9 subjects have been treated and evaluable for DLT at the next intended dose level (should not exceed 9 subjects at one dose level); (3) all doses explored appear to be overly toxic, and the MTD cannot be determined.

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Study Type : Interventional
Estimated Enrollment : 30 participants
Allocation: Non-Randomized
Intervention Model: Sequential Assignment
Intervention Model Description: AM-928
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: A Phase I, Open-Label, Dose-Escalation Study to Investigate the Safety, Tolerability, Pharmacokinetics, and Preliminary Efficacy of AM-928 Infusion in Subjects With Advanced Solid Tumors
Estimated Study Start Date : May 2023
Estimated Primary Completion Date : December 2024
Estimated Study Completion Date : June 2026

Arm Intervention/treatment
Experimental: Level -1
0.1 mg/kg
Biological: AM-928
AM-928, which is a humanized anti-EpCAM monoclonal antibody developed by AcadeMab Biomedical Inc.

Experimental: Level 1
0.3 mg/kg (Stating Dose)
Biological: AM-928
AM-928, which is a humanized anti-EpCAM monoclonal antibody developed by AcadeMab Biomedical Inc.

Experimental: Level 2
1 mg/kg
Biological: AM-928
AM-928, which is a humanized anti-EpCAM monoclonal antibody developed by AcadeMab Biomedical Inc.

Experimental: Level 3
3 mg/kg
Biological: AM-928
AM-928, which is a humanized anti-EpCAM monoclonal antibody developed by AcadeMab Biomedical Inc.

Experimental: Level 4
6 mg/kg
Biological: AM-928
AM-928, which is a humanized anti-EpCAM monoclonal antibody developed by AcadeMab Biomedical Inc.

Experimental: Level 5
10 mg/kg
Biological: AM-928
AM-928, which is a humanized anti-EpCAM monoclonal antibody developed by AcadeMab Biomedical Inc.

Experimental: Level 6
15 mg/kg
Biological: AM-928
AM-928, which is a humanized anti-EpCAM monoclonal antibody developed by AcadeMab Biomedical Inc.




Primary Outcome Measures :
  1. The maximum tolerated dose (MTD) [ Time Frame: Up to 29 days ]
    The MTD is defined the highest dose level that is closely to the toxicity rated defined in the study.

  2. The incidence of dose-limiting toxicity (DLT) [ Time Frame: Up to 29 days ]
    The DLT is specified treatment-emergent events that occur in cycle 1 treatment period, graded by NCI-CTCAE v5.0, and causality to study drug cannot be clearly ruled out.


Secondary Outcome Measures :
  1. Number of participants with abnormalities in Laboratory Values [ Time Frame: Up to 28 days after the last dose ]
    Number of participants with abnormal hematology (RBC, WBC with differentials (neutrophils, lymphocytes, monocytes, eosinophils, and basophils), platelet count, hemoglobin, and hematocrit), biochemistry (Albumin, total cholesterol, total bilirubin, direct bilirubin, alkaline phosphatase (ALP), AST, ALT, gamma-glutamyl transferase (γ-GT), total protein, blood urea nitrogen (BUN), lactate dehydrogenase (LDH), creatinine, estimated glomerular filtration rate (eGFR; 2021 CKD-EPI), triglyceride, amylase, lipase, glucose, uric acid, bicarbonate, calcium, chloride, inorganic phosphorus, iron, magnesium, potassium, and sodium), coagulation (prothrombin time (PT), activated partial thromboplastin time (APTT), and international normalized ratio (INR)), and urinalysis (specific gravity, pH, occult blood, leukocytes, glucose, protein, ketones, bilirubin, and urine sediment (RBC, WBC, casts, epithelial cells, crystal, and microorganism)) results

  2. Number of treatment-emergent adverse events (TEAEs) [ Time Frame: Up to 28 days after the last dose ]
    The TEAE is defined as adverse event (AE) occurred after the study drug administration. All TEAE will be assessed for severity by the investigator based on National Cancer Institute Common Terminology Criteria for Adverse Events (NCI-CTCAE) version 5.0

  3. Incidence of subjects experiencing treatment-related AE with ≥ Grade 3 [ Time Frame: Up to 28 days after the last dose ]
    The TEAE is defined as adverse event (AE) occurred after the study drug administration. All TEAE will be assessed for severity by the investigator based on National Cancer Institute Common Terminology Criteria for Adverse Events (NCI-CTCAE) version 5.0

  4. Incidence of all-grade and Grade 3-4 laboratory abnormalities [ Time Frame: Up to 28 days after the last dose ]
    The grading of the laboratory abnormalities is assessed based on National Cancer Institute Common Terminology Criteria for Adverse Events (NCI-CTCAE) version 5.0

  5. Percentage of patients tolerated at least 75% of the intended dose per cycle [ Time Frame: Up to 3 months ]
    A subject will be treated weakly, 4 doses in a cycle

  6. Number of participants with physical abnormalities [ Time Frame: Up to 3 months ]
    Physical examination includes the following items: general appearance, skin, eyes, ears, nose, throat, head and neck (including thyroid), heart, chest and lungs, abdomen, extremities, lymph nodes, musculoskeletal, neurological system, and other body systems if applicable for describing the status of the subject's health.

  7. Number of participants with abnormalities in vital signs [ Time Frame: Up to 28 days after the last dose ]
    Vital signs measurement will consist of systolic/diastolic blood pressure, respiratory rate, pulse rate, and body temperature.

  8. Number of participants with abnormalities in 12-lead electrocardiogram (ECG) for each post-treatment evaluation until the end of Cycle 3 [ Time Frame: Up to 3 months ]
    The results of ventricular rate, PR interval, QRS interval, QT interval, and QTc interval will be recorded.

  9. AM-928 plasma concentration [ Time Frame: Day 1, 2, 3, 4, 8 and 15 of Cycle 1 treatment, Day 1 and 15 of Cycle 2, Day 1 of the following Cycle 3 and Cycle 5, and in 7 days after the last dose ]
    The serum concentration of AM-928

  10. AM-928 Pharmacokinetic Parameter - Cmax [ Time Frame: Week 1 ]
    The peak post-dose concentration

  11. AM-928 Pharmacokinetic Parameter - Tmax [ Time Frame: Week 1 ]
    Time at which Cmax is observed

  12. AM-928 Pharmacokinetic Parameter - T 1/2 [ Time Frame: Week 1 ]
    Terminal phase elimination half-life

  13. AM-928 Pharmacokinetic Parameter - AUC last [ Time Frame: Week 1 ]
    Area under the serum concentration-time profile (AUC) from time zero (T0) to the time of the last quantifiable concentration

  14. AM-928 Pharmacokinetic Parameter - AUC 0-infinity [ Time Frame: Week 1 ]
    AUC from T0 extrapolated to infinite time

  15. AM-928 Pharmacokinetic Parameter - CL [ Time Frame: Week 1 ]
    The volume of plasma cleared of the drug per unit time.

  16. AM-928 Pharmacokinetic Parameter - Vz [ Time Frame: Week 1 ]
    Volume of distribution

  17. AM-928 Pharmacokinetic Parameter - Vss [ Time Frame: Week 1 ]
    Steady-state volume of distribution

  18. AM-928 Pharmacokinetic Parameter - MRT [ Time Frame: Week 1 ]
    Mean Residence Time

  19. AM-928 Pharmacokinetic Parameter - C trough [ Time Frame: ay 8, Day 15, Day 22 of Cycle 1 treatment; Day 1, Day 15 of Cycle 2; Day 1 of Cycle 3 and Cycle 5 ]
    The last pre-dose concentration at steady state before the next dose is administered

  20. Objective response rate (ORR) [ Time Frame: 6 months ]
    The proportion of treated subjects achieving the best overall response of Complete Response (CR) or Partial Response (PR) per RECIST 1.1

  21. Disease control rate (DCR) [ Time Frame: 6 months ]
    The proportion of treated subjects having achieved Complete Response (CR) + Partial Response (PR) + Stable Disease (SD) per RECIST 1.1

  22. Tumor growth rate (TGR) [ Time Frame: Up to 28 days after the last dose ]
    The percent increase in the tumor volume per month

  23. Tumor growth kinetics (TGK) [ Time Frame: Up to 28 days after the last dose ]
    Change in the sum of the diameters of the target lesions per month

  24. Change in Eastern Cooperative Oncology Group (ECOG) score [ Time Frame: Up to 28 days after the last dose ]
    ECOG- Eastern Cooperative Oncology Group performance status is a scale used to assess how the disease affects the daily living abilities, and determine appropriate treatment and prognosis. It is a simple measure of functional status that determines ability of patient to tolerate therapies in cancer

  25. Change in European Organization for Research and Treatment of Cancer (EORTC) QLQ-C30 score [ Time Frame: Up to 28 days after the last dose ]
    The EORTC QLQ-C30 is a patient-reported outcome (PRO) questionnaire to assess the quality of life of cancer patients. Version 3.0 will be applied.



Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  1. Male or female, age ≥ 18 years
  2. Histologically/cytologically confirmed, locally advanced unresectable or metastatic solid tumors that are refractory to or intolerant of existing standard therapy, for which no effective standard therapy that confers clinical benefit is available
  3. Availability of archival tissue specimens for EpCAM immunohistochemistry (IHC) staining. Tumor tissues acceptable include:

    - Tumor tissue sample collected at the time of initial diagnosis

    - The most recent available metastatic tumor biopsy tissue if available (a pre-treatment biopsy may be obtained if the biopsy site is safely accessible)

  4. Has at least one measurable lesion according to Response Evaluation Criteria in Solid Tumors (RECIST) version 1.1
  5. Eastern Cooperative Oncology Group (ECOG) performance score ≤ 2
  6. Subject's life expectancy of at least 12 weeks
  7. Has adequate hematopoietic, hepatic function and renal function:

    • Hemoglobin ≥ 8.0 g/dL without transfusion or erythropoiesis stimulating agent support within 1 week
    • Absolute neutrophil count (ANC) ≥ 1,500 cells/μL without WBC growth factor support within 1 week
    • Total white blood cell (WBC) ≥ 2,500 cells/μL
    • Platelet ≥ 80,000 counts/μL without transfusion support within 1 week
    • Total bilirubin ≤ 1.5× upper limit of normal (ULN) and no sign of jaundice (≤ 3× ULN for subjects with known Gilbert disease)
    • Alanine aminotransferase (ALT) and aspartate aminotransferase (AST) ≤ 3× ULN (≤ 5× ULN for subjects with tumor involvement in liver)
    • Serum albumin ≥ 3.0 g/dL
    • eGFR (CKD-EPI) ≥ 60 mL/min/1.73 m^2
  8. A female subject with childbearing potential should be confirmed of not being pregnant or not lactating at the screening and during the study
  9. Willingness and ability to comply with protocol-stated requirements, instructions, and restrictions in the investigator's judgement
  10. Is able to understand the nature of this study and accepts to enter the study by signing written informed consent

Exclusion Criteria:

  1. Received any cancer therapeutic modalities (e.g., surgery on target lesions, radiotherapy) within 4 weeks prior to initial dosing (except the palliative radiotherapy performed on non-target local lesions), or have any unrecovered surgical wound.
  2. Treatment with any chemotherapeutic agent, hormonal therapy (except hormone replacement therapy or oral contraceptives), or any other anti-cancer agent within 4 weeks or 5 half-lives of the treated agents, whichever is shorter, prior to initiation of AM-928 infusion
  3. Carries history of primary malignancy other than the entry diagnosis that could affect compliance with the protocol or interpretation of results within 5 years prior to the Screening Visit, except curatively treated non-melanoma skin cancer, cervical carcinoma in situ, or superficial bladder tumors
  4. Received systemic immunosuppressive medication(s) (including, but not limited to, steroids [excluding ≤10 mg of prednisone per day or equivalent], cyclophosphamide, azathioprine, methotrexate, thalidomide, tumor necrosis factor-ɑ antagonists, and calcineurin inhibitors) within 2 weeks (for those half-life ≤ 72 hours) or 4 weeks (for those half-life > 72 hours) prior to study dosing and during the study period, with the following caveats:

    • Well-controlled eczema, psoriasis, lichen simplex chronicus, or vitiligo with dermatologic manifestations only (e.g., no psoriatic arthritis) at baseline that only requires low potency topical steroids is allowed
    • The use of inhaled corticosteroids is allowed if they are on a stable dose (i.e., no change in dose within 3 months prior to C1D1)
    • The use of oral mineralocorticoids is allowed
    • Physiologic doses of corticosteroids for adrenal insufficiency or supportive care for a subject's advanced tumor may be allowed at the investigator's discretion
  5. Subject with significant cardiopulmonary abnormalities as defined by:

    • Poorly controlled hypertension (systolic blood pressure > 150 mm-Hg and/or diastolic blood pressure > 100 mm-Hg on anti-hypersensitive medications)
    • Left ventricular ejection fraction (LVEF) < 50% at screening
    • History of symptomatic congestive heart failure > class 2 per New York Heart Association (NYHA) classification
    • History of myocarditis
    • Myocardial ischemia/infarction or unstable angina within 6 months of study enrollment
    • Uncontrolled serious cardiac arrhythmias
    • Corrected QT interval > 470 ms demonstrated by at least 2 ECGs > 30 minutes apart
    • Evidence of active pneumonitis (including drug-induced), organizing pneumonia (i.e., bronchiolitis obliterans, cryptogenic organizing pneumonia, etc.), or history of idiopathic pulmonary fibrosis. History of radiation pneumonitis in the radiation field (fibrosis) is permitted.
    • History of 2nd or 3rd-degree atrioventricular conduction defects
  6. History of thromboembolic or cerebrovascular events within the last 6 months at screening, including transient ischemic attack, cerebrovascular accident, or deep vein thrombosis
  7. Prior treatment with any EpCAM-targeted anti-cancer therapies
  8. Subjects with the following infections:

    - History of active pulmonary tuberculosis infection ≤ 48 weeks prior to C1D1, regardless of treatment

    • Any major episode of infection requiring treatment with systemic antibiotics or hospitalization within 4 weeks prior to C1D1
    • Known human immunodeficiency virus (HIV) history
    • Presence of hepatitis B surface antigen (HBsAg) or HCV RNA positive
  9. Administration of a live, attenuated vaccine within 4 weeks before C1D1 or anticipation that such a live, attenuated vaccine will be required during the study
  10. Received any investigational product within 4 weeks before C1D1
  11. History of severe allergic, anaphylactic, or other hypersensitivity reactions to humanized antibodies
  12. Known hypersensitivity to any of the components of AM-928
  13. Has unstable/uncontrolled central nervous system (CNS) malignancy, leptomeningeal, or brain metastasis (progressing or those who continue to require glucocorticoids or intrathecal chemotherapy)
  14. Has symptomatic pleural effusion, pericardial effusion, or poorly controlled ascites
  15. Suffering from side/toxic effects of previous or current therapy [i.e., National Cancer Institute - Common Terminology Criteria for Adverse Event (NCI-CTCAE) ≥ Grade 2] that, judged by the investigator, may interfere with the trial results or the subject's safety
  16. Prior allogeneic stem cell, solid organ, or bone marrow transplantation
  17. Subject with any underlying medical, mental, or psychological conditions that would impair the treatment compliance, contraindicate the use of the investigational product, or that may render the subject at high risk from treatment complications, in the opinion of the investigator, would not permit to participate in the study
  18. All male subjects and female subjects with childbearing potential (between puberty and 2 years after menopause) should use at least one of the appropriate contraception methods shown below from signing ICF to at least 4 weeks after stopping study treatment.

    1. Total abstinence (when this is in line with the preferred and usual lifestyle of the subject). Periodic abstinence (e.g., calendar, ovulation, symptothermal, post-ovulation methods) and withdrawal are not acceptable methods of contraception.
    2. Female sterilization (have had surgical bilateral oophorectomy with or without hysterectomy), total hysterectomy, or tubal ligation at least 6 weeks before taking study treatment. In the case of oophorectomy alone, only when the reproductive status of the woman has been confirmed by follow up hormone level assessment.
    3. Male sterilization (at least 6 months prior to screening). For female subjects on the study, the vasectomized male partner should be the sole partner for that subject.
    4. Combination of any two of the following listed methods: (d.1+d.2 or d.1+d.3, or d.2+d.3):

    d.1. Use oral, injected, or implanted hormonal methods of contraception or other forms of hormonal contraception that have comparable efficacy (failure rate <1%), for example, hormone vaginal ring or transdermal hormone contraception.

    d.2. Placement of an intrauterine device (IUD) or intrauterine system (IUS). d.3. Barrier methods of contraception: Condom or Occlusive cap (diaphragm or cervical/vault caps) with spermicidal foam/gel/film/cream/vaginal suppository.


Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT05687682


Contacts
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Contact: Miles Yeh, Ph.D. +886 27891212 ext 810 miles.yeh@academab.com

Sponsors and Collaborators
AcadeMab Biomedical Inc.
Investigators
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Study Director: Miles Yeh, Ph.D. AcadeMab Biomedical Inc.
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Responsible Party: AcadeMab Biomedical Inc.
ClinicalTrials.gov Identifier: NCT05687682    
Other Study ID Numbers: A928-CLN-001
First Posted: January 18, 2023    Key Record Dates
Last Update Posted: January 18, 2023
Last Verified: January 2023
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: No

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Studies a U.S. FDA-regulated Drug Product: Yes
Studies a U.S. FDA-regulated Device Product: No
Keywords provided by AcadeMab Biomedical Inc.:
Solid tumor
EpCAM
Antibody
Additional relevant MeSH terms:
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Neoplasms