Testing EIS-12656 for advanced solid tumors

A Phase 1/2, Open Label Trial to Investigate the Safety, Tolerability, and Preliminary Efficacy of EIS-12656 as Single Agent and in Combination With a Poly-ADP Ribose Polymerase (PARP) Inhibitor or Trastuzumab Deruxtecan (T-DXd), an Antibody Drug Conjugate (ADC), in Participants With Specified Solid Tumors

Phase1; Phase2 Interventional Eisbach Bio GmbH · NCT06525298

This study is testing a new drug called EIS-12656 to see if it can safely help people with advanced solid tumors that have certain genetic mutations.

Quick facts

PhasePhase1; Phase2
Study typeInterventional
Enrollment144 (estimated)
Ages18 Years and up
SexAll
SponsorEisbach Bio GmbH Industry-sponsored
Drugs / interventionsRadiation
Locations1 site (Houston, Texas)
Trial IDNCT06525298 on ClinicalTrials.gov

What this trial studies

This trial investigates the safety and efficacy of a new drug, EIS-12656, in patients with advanced solid tumors that have specific genetic mutations. It consists of a Phase 1 dose escalation to determine the optimal dose and a Phase 2 expansion to evaluate the drug's effectiveness alone or in combination with other therapies. Participants will be monitored for safety, tolerability, and anti-tumor activity throughout the trial.

Who should consider this trial

Good fit: Ideal candidates include patients with recurrent locally advanced or metastatic solid tumors that have homologous recombination deficiency mutations.

Not a fit: Patients with significant cardiovascular disease or uncontrolled brain metastases may not benefit from this study.

Why it matters

Potential benefit: If successful, this treatment could provide a new therapeutic option for patients with advanced solid tumors that are difficult to treat.

How similar studies have performed: Other studies have shown promise with similar approaches targeting homologous recombination deficiencies, indicating potential for success.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Recurrent locally advanced or metastatic solid tumors
* Homologous recombination deficient mutations
* Progressed on at least on prior line of treatment or intolerant to additional effective standard therapy
* Measurable disease (RECIST 1.1 Criteria)
* Adequate organ and bone marrow function
* ECOG Performance Status 0 or 1
* Life expectancy \> 3 months

Exclusion Criteria:

* History or evidence of any clinically relevant gastrointestinal disease
* Radiation therapy within ≤2 weeks
* Significant cardiovascular disease
* Uncontrolled, active, symptomatic brain metastases

Where this trial is running

Houston, Texas

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Advanced Solid TumorHomologous Recombination DeficiencyHRR Deficiency
Last reviewed 2026-06-09 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.