On March 18, 2026 Sapience Therapeutics, Inc., a clinical-stage biotechnology company focused on the discovery and development of peptide therapeutics to address oncogenic and immune dysregulation that drive cancer, reported three poster presentations at the American Association for Cancer Research (AACR) (Free AACR Whitepaper) Annual Meeting 2026, taking place April 17-22, 2026, in San Diego, California. Sapience will present clinical and non-clinical results from ST316, a first-in-class antagonist of β-catenin, as well as results from its preclinical Fra1 antagonist peptide (FraAP) program, a first-in-class antagonist of the activator protein 1 (AP-1) complex.
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Poster Presentation Details:
Title: "ST316, a first in class β-catenin antagonist, demonstrates safety and efficacy in metastatic colorectal cancer (mCRC)"
Session Title: Phase II and Phase III Clinical Trials
Location: Poster Section 52, Poster Board Number 20
Abstract Number: CT156
Date and Time: Monday, April 20, 2026, 2:00PM – 5:00PM PST
Title: "Antagonism of β-catenin/BCL9 interaction suppresses polymorphonuclear myeloid-derived suppressor cell generation and maintenance"
Session Title: Oncogenic Pathways and Cancer Immunity
Location: Poster Section 7, Poster Board Number 5
Abstract Number: 5562
Date and Time: Tuesday, April 21, 2026, 2:00PM – 5:00PM PST
Title: "Targeted antagonism of the activator protein 1 transcription factor complex results in potent anti-tumor activity in HNSCC models"
Session Title: Oncogenic Transcription Factors and Cancer Programs
Location: Poster Section 24, Poster Board Number 17
Abstract Number: 4767
Date and Time: Tuesday, April 21, 2026, 9:00AM – 12:00PM PST
More information can be found on the AACR (Free AACR Whitepaper) Annual Meeting 2026 website.
About ST316
ST316 is a first-in-class antagonist of the interaction between β-catenin and its co-activator, BCL9, a complex responsible for driving oncogene expression and immune exclusion in multiple cancers where aberrant Wnt/β-catenin pathway signaling is observed. Aberrant activation of the Wnt/β-catenin pathway is a critical driver of tumor progression and immune evasion in tumors including colorectal cancer (CRC). Targeting this pathway is challenging for multiple reasons including its role in normal tissue physiology. BCL9 is a co-activator essential for oncogenic β-catenin activity, but not its physiologic functions, highlighting the β-catenin/BCL9 interaction as a therapeutic target. ST316 was designed to selectively disrupt the β-catenin and BCL9/9L interaction, resulting in disruption of oncogenic Wnt/β-catenin transcriptional activity and potent antitumor activity, with no negative impact on intestinal or bone physiology.
ST316-101 (NCT05848739) is a first-in-human, open-label, Phase 1/2 dose escalation and expansion study designed to determine the safety, tolerability, PK, PD and early efficacy of ST316. The Phase 1 dose escalation portion of the study tested various dose levels of ST316 in patients with selected advanced solid tumors that are known to harbor abnormalities of the Wnt/β-catenin signaling pathway, including colorectal cancer (CRC). ST316 is currently being evaluated in the Phase 2 portion of the study in CRC patients in combination with relevant standards of care and in multiple lines of treatment. The U.S. Food and Drug Administration (FDA) has granted Orphan Drug Designation to ST316 for the treatment of familial adenomatous polyposis (FAP).
(Press release, Sapience Therapeutics, MAR 18, 2026, View Source [SID1234663717])