On October 14, 2021 Elevation Oncology, Inc. (Nasdaq: ELEV), a clinical stage biopharmaceutical company focused on the development of precision medicines for patients with genomically defined cancers, reported an investigator-presented case series from the Cancer Molecular Screening and Therapeutics (MoST) study at the Australasian Gastro-Intestinal Trials Group (AGITG) 2021 Annual Scientific Meeting, taking place virtually October 12-15, 2021 (Press release, Elevation Oncology, OCT 14, 2021, View Source;utm_medium=rss&utm_campaign=elevation-oncologys-seribantumab-included-as-part-of-a-case-series-presentation-at-the-australasian-gastro-intestinal-trials-group-2021-annual-scientific-meeting [SID1234591224]). The presentation was selected as one of four "Best of the Best" at the meeting and provides a select case series of patients treated on the MoST program, which uses genomic profiling to characterize molecular changes in tumors from patients with treatment-refractory advanced cancers and matches those patients with targeted oncology agents.

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A patient with treatment-refractory metastatic pancreatic cancer had their tumor genomically profiled through the MoST program, was found to harbor an NRG1 fusion, and subsequently received treatment with seribantumab through a compassionate use program provided by Elevation Oncology. As of the data cut-off for the presentation, treatment with seribantumab resulted in durable clinical benefit for over 9 months, an approximately 90% reduction in the cancer biomarker CA19-9, and an ongoing 3 month confirmed partial response per RECIST criteria with a maximum tumor reduction of over 50%.

"The MoST program is focused on exploring the importance of matching therapeutics to patients based upon genomic evaluation of their individual tumors," said Dr Subotheni Thavaneswaran, Medical Oncologist at The Kinghorn Cancer Centre and a research fellow and principal investigator of the MoST program, Garvan Institute of Medical Research and NHMRC Clinical Trials Centre. "We are pleased to have been able to gain access to an investigational treatment option for this patient, following identification of an NRG1 fusion. Compassionate early access to seribantumab following three prior lines of therapy resulted in a clinical benefit for this individual patient, and is an important reminder of the potential for matching specific therapeutics to genomic tumor profiling results."

The full presentation from AGITG can be accessed here.

The details for the AGITG 2021 poster presentation are as follows:

Title: Comprehensive genomic profiling reveals novel opportunities for treatment-refractory gastrointestinal cancers
Authors: Wei Yen Chan1, Subotheni Thavaneswaran1,2,3, Frank Lin2,3, Lucille Sebastian3, Mandy Ballinger2, John Grady2, Maya Kansara2, Anthony Joshua1,2, Rasha Cosman1, John Simes3, David Thomas1,2
1 The Kinghorn Cancer Centre St Vincent’s Hospital Sydney; 2 Garvan Institute of Medical Research, Faculty of Medicine, UNSW; 3 NHMRC Clinical Trials Centre, University of Sydney
Presenter: Wei Yen Chan, The Kinghorn Cancer Centre, St. Vincent’s Hospital, Sydney
Session: Best of the Best
Date and time: Thursday, October 14, 2021; 11:15 to 12:15 AEDT

Distinct from the compassionate use program through which this patient was treated, seribantumab is currently being investigated by Elevation Oncology in the company-sponsored Phase 2 CRESTONE study, a tumor-agnostic "basket trial" in patients with solid tumors that harbor an NRG1 fusion and have progressed after at least one prior line of standard therapy. The CRESTONE study is currently enrolling across the U.S. at over 26 active clinical sites and is anticipated to expand to other global regions. Elevation Oncology expects to report clinical data from an interim analysis of the CRESTONE study in mid-2022.

About Seribantumab and NRG1 Gene Fusions

Seribantumab is a fully human IgG2 monoclonal antibody that binds to human epidermal growth factor receptor 3 (HER3). HER3 is traditionally activated through binding of its primary ligand, neuregulin-1 (NRG1). The NRG1 gene fusion is a rare genomic alteration that combines NRG1 with another partner protein to create chimeric NRG1 "fusion proteins." The NRG1 fusion protein is often also able to activate the HER3 pathway, leading to unregulated cell growth and proliferation. Importantly, NRG1 gene fusions are predominantly mutually exclusive with other known genomic driver mutations and are considered a unique oncogenic driver event associated with tumor cell survival.

NRG1 fusions have been identified in a variety of solid tumors, including lung, pancreatic, gallbladder, breast, ovarian, colorectal, neuroendocrine, cholangiocarcinomas, and sarcomas. In preclinical experiments, seribantumab prevented the activation of HER3 signaling in cells that harbor an NRG1 gene fusion and destabilized the entire ERBB family signaling pathway including the activation of HER2, EGFR, and HER4. In addition to extensive nonclinical characterization and testing, seribantumab has been administered to over 800 patients across twelve Phase 1 and 2 studies, both as a monotherapy and in combination with various anti-cancer therapies. Seribantumab is currently being evaluated in the Phase 2 CRESTONE study for patients with solid tumors of any origin that have an NRG1 fusion.

About the CRESTONE Study

Clinical Study of Response to Seribantumab in Tumors with Neuregulin-1 (NRG1) Fusions. CRESTONE is a Phase 2 tumor-agnostic "basket trial" of seribantumab in patients with solid tumors that harbor an NRG1 fusion and have progressed after at least one prior line of standard therapy. The primary objective of the study is to describe the anti-tumor activity and safety of seribantumab as a monotherapy specifically in patients whose solid tumor is uniquely driven by an NRG1 gene fusion. CRESTONE offers a clinical trial opportunity for patients with advanced solid tumors who have not responded or are no longer responding to treatment. Patients are encouraged to talk to their doctor about genomic testing of their tumor. CRESTONE is open and enrolling today in the United States. For more information visit www.NRG1fusion.com.