IKS014 in Advanced Solid Tumors That Express HER2

NCT ID: NCT05872295

Last Updated: 2026-01-15

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

PHASE1

Total Enrollment

165 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-09-14

Study Completion Date

2027-09-30

Brief Summary

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This study will evaluate the recommended dose for further clinical development, safety, tolerability, anti-tumor activity, immunogenicity, pharmacokinetics and pharmacodynamics of IKS014, a HER2 targeting antibody-drug conjugate, in patients with advanced solid tumors.

Detailed Description

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The study will consist of 2 parts: dose-escalation (Part 1) and dose-expansion (Part 2). The dose-escalation part (Part 1) of the study is to evaluate the safety and tolerability of increasing dose levels of IKS014 to establish a recommended phase 2 dose (RP2D); and the dose-expansion part (Part 2) of the study is to further evaluate the safety, pharmacokinetics/pharmacodynamics, and efficacy of IKS014 at the RP2D.

Conditions

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Breast Cancer Gastric Cancer Gastroesophageal-junction Cancer

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

SEQUENTIAL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Dose Escalation Cohort (Part 1)

Each patient will receive repeat doses (by intravenous (IV) infusions) on Day 1 of each 21-day cycle. Participants may continue on study until disease progression, unacceptable toxicity, or other withdrawal criteria is met.

Group Type EXPERIMENTAL

IKS014

Intervention Type DRUG

IKS014 is a human monoclonal antibody (Ab) targeting HER2 linked to monomethyl auristatin F (MMAF) cytotoxic agent.

Dose Expansion: HER2+ Breast Cancer Participants

Each patient will receive IKS014 at the recommended dose defined in Part 1 on Day 1 of each 21-day cycle. Participants may continue on study until disease progression, unacceptable toxicity, or other withdrawal criteria is met.

Group Type EXPERIMENTAL

IKS014

Intervention Type DRUG

IKS014 is a human monoclonal antibody (Ab) targeting HER2 linked to monomethyl auristatin F (MMAF) cytotoxic agent.

Dose Expansion: HER2 Low Breast Cancer Participants

Each patient will receive IKS014 at the recommended dose defined in Part 1 on Day 1 of each 21-day cycle. Participants may continue on study until disease progression, unacceptable toxicity, or other withdrawal criteria is met.

Group Type EXPERIMENTAL

IKS014

Intervention Type DRUG

IKS014 is a human monoclonal antibody (Ab) targeting HER2 linked to monomethyl auristatin F (MMAF) cytotoxic agent.

Dose Expansion: HER2+ Gastric Cancer or Gastro-esophageal Junction Participants

Each patient will receive IKS014 at the recommended dose defined in Part 1 on Day 1 of each 21-day cycle. Participants may continue on study until disease progression, unacceptable toxicity, or other withdrawal criteria is met.

Group Type EXPERIMENTAL

IKS014

Intervention Type DRUG

IKS014 is a human monoclonal antibody (Ab) targeting HER2 linked to monomethyl auristatin F (MMAF) cytotoxic agent.

Dose Expansion: HER2 Low Gastric Cancer or Gastro-esophageal Junction Participants

Each patient will receive IKS014 at the recommended dose defined in Part 1 on Day 1 of each 21-day cycle. Participants may continue on study until disease progression, unacceptable toxicity, or other withdrawal criteria is met.

Group Type EXPERIMENTAL

IKS014

Intervention Type DRUG

IKS014 is a human monoclonal antibody (Ab) targeting HER2 linked to monomethyl auristatin F (MMAF) cytotoxic agent.

Dose Expansion: HER2 Solid Tumor Cancer Participants

Each patient will receive IKS014 at the recommended dose defined in Part 1 on Day 1 of each 21-day cycle. Participants may continue on study until disease progression, unacceptable toxicity, or other withdrawal criteria is met.

Group Type EXPERIMENTAL

IKS014

Intervention Type DRUG

IKS014 is a human monoclonal antibody (Ab) targeting HER2 linked to monomethyl auristatin F (MMAF) cytotoxic agent.

Interventions

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IKS014

IKS014 is a human monoclonal antibody (Ab) targeting HER2 linked to monomethyl auristatin F (MMAF) cytotoxic agent.

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

* HER2 positive solid tumors with expression defined as IHC3+, IHC2+/ISH+, or low HER2 expression defined as IHC2+ (ISH-) or IHC1+ (ISH- /+ or untested).
* Participants with HR positive BC must have received prior treatment with a CDK4/6 inhibitor, in countries where this is standard therapy.
* Platelets ≥ 75,000 /mcL
* Hemoglobin ≥ 9.0 g/dL
* Absolute neutrophil count ≥ 1000/mcL
* No administration of granulocyte colony-stimulating factor (G-CSF) is allowed within 2 weeks prior to first study drug administration
* Creatinine clearance \> 45/mL/min (using the Cockcroft-Gault equation)
* Aspartate aminotransferase (AST) (serum glutamic-oxaloacetic transaminase \[SGOT\])/alanine aminotransferase (ALT) (serum glutamate pyruvate transaminase \[SGPT\]) ≤ 3 x institutional upper limit of normal (ULN) ≤ 5 x ULN if liver metastases present
* Total bilirubin ≤ 1.5 x ULN if no liver metastases or \< 3 x ULN with Gilbert's Syndrome or liver metastases at baseline
* Albumin \> 2.5 g/dL
* Prothrombin time or international normalized ratio (INR) and either partial thromboplastin time (PTT) or activated (a) PTT ≤ 1.5 x ULN, ≤ 3 x institutional ULN if anticoagulated.
* Must have adequate treatment washout period before trial treatment, defined as: Major surgery (≥ 4 weeks) and radiation therapy (≥ 3 weeks; in case of palliative radiation ≥ 2 weeks)
* Eastern Cooperative Oncology Group (ECOG) performance status (PS) of 0 or 1 (or equivalent Karnofsky PS)
* Part 2 Dose Expansion Cohorts May Include:

1. Advanced or metastatic BC that is confirmed HER2-positive defined as IHC 3+ or IHC 2+ and evidence of HER2 amplification by ISH, as per ASCO-CAP and previously treated with at least two HER2 directed treatments.
2. Advanced or metastatic BC that has low HER2 expression defined as IHC2+ (ISH-) or IHC1+ (ISH-/+ or untested) and previously treated with at least 1 prior line of therapy which may include chemotherapy and/or a HER2 directed ADC.
3. Advanced or metastatic GC or GEJ cancer that is confirmed HER2-positive defined as IHC 3+ or IHC 2+ and evidence of HER2 amplification by ISH as per ASCO-CAP and previously treated with at least 1 prior line of therapy, which may include chemotherapy and/or a HER2 directed ADC.
4. Advanced or metastatic GC or GEJ cancer that has low HER2 expression defined as IHC2+ (ISH-) or IHC1+ (ISH-/+ or untested) and has been previously treated with at least one prior line of therapy.
5. Advanced or metastatic solid tumor that has any degree of HER2 expression (HER2 IHC3+, IHC2+, IHC1+ or ISH+) or a known activating HER2 mutation and has been treated with standard of care therapy relevant to the disease.

Exclusion Criteria

* History of (noninfectious) ILD/pneumonitis that required steroids, has current ILD/pneumonitis, or where suspected ILD/pneumonitis cannot be ruled out by imaging at Screening.
* Any clinically apparent ≥ Grade 2 pulmonary compromise resulting from intercurrent pulmonary illnesses including, but not limited to, any underlying pulmonary disorder (i.e., pulmonary emboli within three months of the trial enrollment, severe asthma, severe chronic obstructive pulmonary disease \[COPD\], restrictive lung disease, pleural effusion, etc.), and any autoimmune, connective tissue or inflammatory disorders with potential pulmonary involvement (e.g., rheumatoid arthritis, Sjogren's, sarcoidosis), or prior pneumonectomy.
* Current evidence of ≥ Grade 2 keratitis or other corneal abnormality.
* Evidence of a clinically significant (≥ Grade 2) abnormality on slit-lamp examination or other clinically significant ophthalmologic finding, as determined by an ophthalmologist.
* Evidence of clinically significant (≥ Grade 2) confluent superficial keratitis, a corneal epithelial defect, a corneal ulcer, or stromal opacity.
* Participant must not use contact lenses while participating in this study.
* Central nervous system metastatic disease unless treated with definitive local therapy (surgical resection, stereotactic radiotherapy, or whole brain radiotherapy) and participant is clinically, radiologically and neurologically stable for at least 4 weeks prior to the first dose of study drug not on steroid therapy or are on a stable or decreasing dose of steroids for at least 7 days prior to first dose of study drug. Prophylactic anticonvulsant medications are allowed.
* Active second malignancy or history of another malignancy within the last 2 years with the exception of:

* Treated, non-melanoma skin cancers
* Treated carcinoma in situ (CIS) (e.g., breast, cervix)
* Controlled, superficial carcinoma of the urinary bladder
* T1a or b carcinoma of the prostate treated according to local standard of care, with prostate specific antigen (PSA) within normal limits (WNL) for the institution
* Papillary thyroid carcinoma Stage I treated surgically for cure
* Clinically significant cardiovascular disease or condition
* Clinically significant liver disease
* Any other serious/active/uncontrolled infection, any infection requiring parenteral antibiotics, or unexplained fever \> 38ºC within 2 weeks prior to first trial drug administration.
* Any other serious, life-threatening, or unstable preexisting medical condition (aside from the underlying malignancy), including significant organ system dysfunction, or clinically significant laboratory abnormality(ies), which, in the opinion of the Investigator, would either compromise the participant's safety or interfere with obtaining informed consent, compliance with trial procedures, or evaluation of the safety of the trial drug
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Iksuda Therapeutics Ltd.

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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James O'Leary, MD

Role: STUDY_DIRECTOR

Iksuda Therapeutics

Locations

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Hoag Memorial Hospital Presbyterian

Newport Beach, California, United States

Site Status RECRUITING

Dana Farber Cancer Institute

Boston, Massachusetts, United States

Site Status RECRUITING

Tennessee Oncology

Nashville, Tennessee, United States

Site Status RECRUITING

Concord Repatriation General Hospital Medical Oncology Clinical Trials Unit

Concord, New South Wales, Australia

Site Status RECRUITING

Macquarie University

Sydney, New South Wales, Australia

Site Status RECRUITING

Westmead Hospital

Westmead, New South Wales, Australia

Site Status RECRUITING

Peninsula & South Eastern Haematology and Oncology Group (PSEHOG)

Frankston, Victoria, Australia

Site Status RECRUITING

Alfred Health

Melbourne, Victoria, Australia

Site Status RECRUITING

Linear Clinical Research

Nedlands, Western Australia, Australia

Site Status RECRUITING

Auckland City Hospital

Auckland, , New Zealand

Site Status RECRUITING

National Cancer Centre Singapore

Singapore, , Singapore

Site Status RECRUITING

Tan Tock Seng Hospital

Singapore, , Singapore

Site Status RECRUITING

Countries

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United States Australia New Zealand Singapore

Central Contacts

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David Browning

Role: CONTACT

+1-615-975-7776

Facility Contacts

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Tam Bui, MD

Role: primary

(02) 9767 5988

Adnan Nagrial, MD

Role: primary

0403170371

Vinod Ganju, MD

Role: primary

0397815244

Malaka Ameratunga, MD

Role: primary

0390763129

Peter Lau, MD

Role: primary

0438899188

Other Identifiers

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IKS014-01

Identifier Type: -

Identifier Source: org_study_id

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