NCT06433947

Brief Summary

Phase 1b, open-label study evaluating the safety, tolerability, pharmacokinetics, preliminary antitumor activity, and pharmacodynamics of OPN-6602 monotherapy and in combination with dexamethasone in subjects with relapsed and/or refractory MM.

Trial Health

57
Monitor

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
130

participants targeted

Target at P75+ for phase_1

Timeline
Completed

Started Aug 2024

Geographic Reach
1 country

12 active sites

Status
recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

May 23, 2024

Completed
7 days until next milestone

First Posted

Study publicly available on registry

May 30, 2024

Completed
3 months until next milestone

Study Start

First participant enrolled

August 22, 2024

Completed
1.9 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

July 1, 2026

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

July 1, 2026

Completed
Last Updated

May 19, 2026

Status Verified

May 1, 2026

Enrollment Period

1.9 years

First QC Date

May 23, 2024

Last Update Submit

May 15, 2026

Conditions

Outcome Measures

Primary Outcomes (3)

  • Number and type of dose-limiting toxicities (DLTs)

    Through up to approximately 30 days following last dose of OPN-6602

  • Number and type of treatment-emergent adverse events (TEAEs)

    Through up to approximately 30 days following last dose of OPN-6602

  • Number of Participants With Clinical Laboratory Test Abnormalities

    Number of participants who experienced a clinical laboratory test abnormality, including hematology and serum chemistry, and coagulation. Abnormalities considered are those Grade 3-4 events with a \>= 1 grade increase from baseline using National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) version 5.0.

    Through up to approximately 30 days following last dose of OPN-6602

Study Arms (3)

Dose escalation monotherapy

EXPERIMENTAL
Drug: OPN-6602

Dose escalation in combo with dexamethasone

EXPERIMENTAL
Drug: OPN-6602Drug: Dexamethasone

Dose expansion

EXPERIMENTAL
Drug: OPN-6602

Interventions

orally active, small molecule inhibitor of EP300 and CBP bromodomain; dosed daily

Dose escalation in combo with dexamethasoneDose escalation monotherapyDose expansion

Synthetic glucocorticoid; 40 mg Days 1, 8, 15 of each cycle

Dose escalation in combo with dexamethasone

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Confirmed diagnosis of multiple myeloma (MM)
  • Relapsed or refractory to 3 or more different prior lines of therapy for MM that included immunomodulatory agents, proteosome inhibitors, and anti-CD38 antibody and not a candidate for or intolerant to established therapy known to provide clinical benefit
  • Adequate hematologic, renal, liver, cardiac function

You may not qualify if:

  • Monoclonal gammopathy of undetermined significance (MGUS), smoldering myeloma, Waldenström's macroglobulinemia, or IgM myeloma
  • Active plasma cell leukemia
  • Polyneuropathy, organomegaly, endocrinopathy, monoclonal protein and skin changes (POEMS syndrome)
  • Prior Stevens Johnson syndrome
  • Localized radiation therapy to disease site(s) within 2 weeks of the first dose
  • Prior autologous peripheral stem cell transplant or prior autologous bone marrow transplantation within \<90 days of the first dose of study drug
  • Prior allogeneic stem cell transplantation or solid organ transplantation within 12 months of first dose of study drug; subjects receiving immunosuppressive medication for active graft vs host disease will be excluded.
  • Prior chemotherapy, targeted anticancer or radiation therapy within 2 weeks prior to first dose of study drug
  • Concomitant high-dose corticosteroids (except subjects on chronic steroids given for disorders other than myeloma)
  • Known central nervous system involvement by multiple myeloma
  • Active known second malignancy with exception of adequately treated basal cell carcinoma, squamous cell carcinoma of the skin, or in situ cervical cancer; adequately treated Stage 1 cancer from which the subject is currently in remission and has been in remission for ≥2 years; low-risk prostate cancer with a Gleason score \<7 and a PSA level \<10 ng/mL; any other cancer from which the subject has been disease-free for ≥3 years
  • Ongoing systemic infection requiring parenteral treatment
  • Poorly controlled Type 2 diabetes

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (12)

Banner MD Anderson

Gilbert, Arizona, 85234, United States

RECRUITING

UC San Diego Moores Cancer Center

La Jolla, California, 92093-0698, United States

RECRUITING

Stanford Cancer Institute

Stanford, California, 94305, United States

RECRUITING

Emory Winchip Cancer Center

Atlanta, Georgia, 30322, United States

RECRUITING

University of Kansas Clinical Research Center

Westwood, Kansas, 66205, United States

RECRUITING

Dana Farber Cancer Institute

Boston, Massachusetts, 02215, United States

RECRUITING

Karmanos Cancer Institute

Detroit, Michigan, 48201, United States

RECRUITING

START Midwest

Grand Rapids, Michigan, 49546, United States

RECRUITING

University of Rochester Medical Center

Rochester, New York, 14642, United States

RECRUITING

University of North Carolina Hospitals at Hillsborough

Chapel Hill, North Carolina, 27599, United States

RECRUITING

Huntsman Cancer Center Institute University of Utah

Salt Lake City, Utah, 84112, United States

RECRUITING

Fred Hutchinson Cancer Center

Seattle, Washington, 98109, United States

RECRUITING

MeSH Terms

Conditions

Multiple Myeloma

Interventions

Dexamethasone

Condition Hierarchy (Ancestors)

Neoplasms, Plasma CellNeoplasms by Histologic TypeNeoplasmsHemostatic DisordersVascular DiseasesCardiovascular DiseasesParaproteinemiasBlood Protein DisordersHematologic DiseasesHemic and Lymphatic DiseasesHemorrhagic DisordersLymphoproliferative DisordersImmunoproliferative DisordersImmune System Diseases

Intervention Hierarchy (Ancestors)

PregnadienetriolsPregnadienesPregnanesSteroidsFused-Ring CompoundsPolycyclic CompoundsSteroids, Fluorinated

Study Design

Study Type
interventional
Phase
phase 1
Allocation
NON RANDOMIZED
Masking
NONE
Purpose
TREATMENT
Intervention Model
SINGLE GROUP
Sponsor Type
INDUSTRY
Responsible Party
SPONSOR

Study Record Dates

First Submitted

May 23, 2024

First Posted

May 30, 2024

Study Start

August 22, 2024

Primary Completion

July 1, 2026

Study Completion

July 1, 2026

Last Updated

May 19, 2026

Record last verified: 2026-05

Data Sharing

IPD Sharing
Will not share

Locations