A Phase 1/1B Study of ST-01156, a Small Molecule RBM39 Degrader, in Patients With Advanced Solid Malignancies

Purpose

A Phase 1/1B Study of ST-01156 in Patients with Advanced Solid Malignancies

Conditions

  • Advanced Solid Tumors
  • Ewing Sarcoma
  • Hepatocellular Carcinoma (HCC)
  • Biliary Tract Cancer (BTC)

Eligibility

Eligible Ages
Over 16 Years
Eligible Sex
All
Accepts Healthy Volunteers
No

Inclusion Criteria

  • Age ≥ 18 years on the day of signing the consent form, except for adolescents with Ewing Sarcoma or other malignancies for which there is a biological rationale to support participation, in which case the participant is ≥ 16 years old. - Has a metastatic or locally advanced and unresectable solid tumor. - Has at least 1 measurable lesion or evaluable disease per RECIST v1.1. - Has an ECOG performance status ≤ 2 at screening. - Has adequate organ function as defined in the protocol.

Exclusion Criteria

  • Has received prior radiotherapy within 2 weeks of treatment. - Has known active CNS metastases and/or carcinomatous meningitis. Participants with previously treated brain metastases may participate, provided they are radiologically stable - Has received treatment with any local or systemic anticancer therapy or investigational anticancer agent within 14 days or 5 half-lives, whichever is shorter. - Had major surgery within 28 days before study therapy administration - Has toxicities from previous anticancer therapies that have not resolved to baseline levels, with the exception of alopecia and peripheral neuropathy. - Has previously received a RBM39 inhibitor/degrader.

Study Design

Phase
Phase 1
Study Type
Interventional
Allocation
N/A
Intervention Model
Single Group Assignment
Primary Purpose
Treatment
Masking
None (Open Label)

Arm Groups

ArmDescriptionAssigned Intervention
Experimental
Dose Escalation
ST-01156, administered orally once daily for 5 consecutive days followed by 2 days without study drug administration every 7 days
  • Drug: ST-01156
    ST-01156 is an orally administered degrader of RBM39, a protein frequently upregulated in cancer

Recruiting Locations

Mass General Brigham Cancer Institute
Boston, Massachusetts 02114
Contact:
Kristina Goodwin
617-643-6256
kgoodwin@mgh.harvard.edu

More Details

Status
Recruiting
Sponsor
SEED Therapeutics, Inc.

Study Contact

Dr. Eric Rowinsky Chief Medical Officer
(908) 883-0647
erowinsky@oncodrugs.com

Detailed Description

This Phase 1/1b study is evaluating the safety, tolerability, and preliminary anticancer activity of ST-01156 in participants with advanced solid malignancies. The study will be conducted in 2 parts. Part 1 (Dose Escalation) will assess the safety, tolerability, pharmacokinetics (PK) and preliminary anticancer activity of SD-01156 in participants with advanced solid malignancies, many of whom have a biological rationale to be targeted with an inhibitor of RBM39. Part 1 will also seek to determine the maximum tolerated dose (MTD) and/or recommended Phase 2 dose (RP2D) of ST-01156.