Optimise viewing for

Toggle between patient and health professional views. The patient version is simplified to help people easily find suitable trials, while the professional view provides full detail.

RecruitingLast updated: 27 August 2026

EIK1003-001: Targeted treatment (IMP1734) for people with advanced breast, ovarian, fallopian tube, primary peritoneal or prostate cancer.A First-in-human, Phase 1/2, Open-label, Multi-center, Dose-escalation, Dose-optimization, and Dose-expansion Study to Evaluate the Safety, Tolerability, Pharmacokinetics, Pharmacodynamics, and Anti-tumor Activity of PARP1 Selective Inhibitor, IMP1734, as Monotherapy in Patients With Advanced Solid Tumors

Trial purpose

Medical clipboardCancer treatment

Tumor type

Multi-Cancer Multi-Cancer

Age

People18 - 89

Trial acronym

EIK1003-001

Clinical summary

Summary

This study is testing a new experimental targeted treatment called IMP1734 (also known as EIK1003) in people with advanced cancers that have spread or come back after treatment.

The main aims of the study are to:

  • Find out how safe the drug is and what side effects it may cause
  • Determine the best dose to use in future studies
  • Learn how the body absorbs, processes and responds to the drug
  • Look for early signs that IMP1734 may help control cancer.

Who can take part?
You may be eligible for this study if:

  • you are aged 18 years or older
  • you have one of the following cancers:
    • breast cancer, and have received at least one prior chemotherapy treatment. If your cancer is HR+ you also need to have had hormone therapy
    • ovarian cancer (including high-grade serous and high-grade endometrioid ovarian cancer), fallopian tube cancer, or primary peritoneal cancer, and have received at least one platinum-based chemotherapy for advanced disease
    • metastatic castration-resistant prostate cancer (mCRPC), and are receiving ADT and have previously received a new hormonal agent and up to one prior taxane chemotherapy
  • your cancer has come back, spread, or continued to grow after previous treatment
  • your cancer has a mutation in an HRR gene

The study has two parts.

Part 1
Researchers will gradually increase the dose of IMP1734 to find the highest dose that can be given safely.

Part 2
Researchers will test and compare selected dose levels to determine the most appropriate dose for future clinical development.

Participants will receive IMP1734 on its own during the study.

 

Conditions

This trial is treating people with advanced breast, ovarian, fallopian tube, primary peritoneal or prostate cancer.

Eligibility

Inclusion

  • Breast cancer; must have received at least one prior chemotherapy in neoadjuvant/adjuvant/metastatic setting, must have received hormonal therapy if HR+,
  • HGSOC or high grade endometrioid EOC, fallopian tube or primary peritoneal cancer; must have received at least one prior platinum-based chemotherapy for advanced disease
  • mCRPC with ongoing ADT, must have received NHA and up to 1 prior line of taxane chemotherapy
  • Age ≥ 18 years at the time of informed consent
  • Eastern Cooperative Oncology Group (ECOG) performance status ≤1
  • Adequate organ function
  • Life expectancy ≥ 12 weeks
  • Should have evaluable disease as defined by RECIST1.1 and/or CA125 or PSA
  • Female subjects of childbearing potential and male subjects must agree to use an effective method of contraception from study entry up to 6 months after the last dose of IMP1734
  • deleterious or suspected deleterious germline or somatic mutations of select HRR genes
  • up to 1 prior line of PARP inhibitor containing treatment

Exclusion

  • Any investigational or approved anti-cancer therapies administered within 28 days/ before the first dose of IMP1734
  • Have received prior PARP1 selective inhibitors
  • Mean resting QTcF > 470 ms or QTcF < 340 ms
  • Active or untreated central nervous system (CNS) metastases and/or carcinomatous meningitis.
  • Infections

    - An active hepatitis B/C infection

  • Any known predisposition to bleeding
  • Unable to swallow oral medications OR have malabsorption syndrome or any other uncontrolled gastrointestinal condition that might impair the bioavailability

Inclusion

  • You have had treatment, but your cancer has come back (relapsed or recurrent).
  • Your cancer has spread to other parts of the body (metastatic) or has grown into nearby parts of the body (locally advanced).
  • You have had treatment but your cancer has gotten worse or has not responded to the treatment you have been given.

Exclusion

  • You have certain types of non-cancer medical conditions.
  • You have had certain treatments, surgical procedures or drugs.
Message

Clinical trials have complex eligibility criteria, and other criteria may apply for this trial. Ask your doctor about whether this trial could be right for you.

Participating hospitals

Recruiting hospitals

InformationTell us if you find this trial availability is not accurate.Report inaccuracy

More information

Trial Identifiers

Information on this page is partially produced from ClinicalTrials.gov, EU Clinical Trials Register *. View further details about this trial on the registry via the links below:

Trial sponsor

Eikon Therapeutics

Scientific Title

A First-in-human, Phase 1/2, Open-label, Multi-center, Dose-escalation, Dose-optimization, and Dose-expansion Study to Evaluate the Safety, Tolerability, Pharmacokinetics, Pharmacodynamics, and Anti-tumor Activity of PARP1 Selective Inhibitor, IMP1734, as Monotherapy in Patients With Advanced Solid Tumors

Get Support

Peer Connect

You might find it helpful to speak to someone who has 'been there before'. Our Peer Connect program can provide one-on-one phone support from someone who understands what you're going through and has clinical trials experience.

Know more about Peer Connect

Contact cancer support

If you need cancer information and practical support for yourself, a carer, family or friend, contact Cancer Council to speak with an experienced health professional on 13 11 20.

Get support

Multilingual information

Learn more about clinical trials through this collection of resources in languages other than English.

View information