Press Release

Atreca Announces Poster Presentations at the 2020 Society for Immunotherapy of Cancer (SITC) Annual Meeting

October 14, 2020 at 4:30 PM EDT

SOUTH SAN FRANCISCO, Calif., Oct. 14, 2020 (GLOBE NEWSWIRE) -- Atreca, Inc. (Atreca) (NASDAQ: BCEL), a clinical-stage biotechnology company focused on developing novel therapeutics generated through a unique discovery platform based on interrogation of the active human immune response, today announced two upcoming poster presentations describing preclinical evaluations of ATRC-101 at the 35th Annual Meeting of the Society for Immunotherapy of Cancer (SITC 2020), to be held virtually from November 9-14, 2020. ATRC-101 is a novel, first-in-class therapeutic candidate derived from a human antibody discovered by Atreca, which targets a tumor-associated ribonucleoprotein (RNP) complex and is currently in Phase 1b clinical development.

Details are as follows:

Title: Cooperation Between Checkpoint Inhibitors Targeting the PD-1/PD-L1 Axis and ATRC-101, a Novel Clinical-Stage Candidate for the Treatment of Solid Tissue Malignancies
Authors: Amy Manning-Bog, Ph.D., et al.
Poster/Abstract Number: 469

Title: ATRC-101 Drives Potent Single-Agent Activity in Mouse Syngeneic Tumor Models via a Novel Cellular Mechanism of Action
Authors: Alexander Scholz, Ph.D., et al.
Poster/Abstract Number: 689

Abstracts and posters can be accessed on the SITC website once the conference begins on Monday, November 9th at 8:00 a.m. EDT. The posters will also be made available on the Atreca website.

About ATRC-101
ATRC-101 is a monoclonal antibody derived from an antibody identified using Atreca’s discovery platform. ATRC-101 is believed to function through Driver Antigen Engagement, a novel mechanism of action in oncology. This mechanism involves systemic delivery of an antibody that, in preclinical models, engages the innate immune system to cause remodeling of the tumor microenvironment and drive T cell-mediated destruction of tumor cells. Atreca has identified the target of ATRC-101 as a tumor-specific ribonucleoprotein (RNP) complex. ATRC-101 has demonstrated robust anti-tumor activity as a single agent in multiple preclinical syngeneic tumor models, including one model in which PD-1 checkpoint inhibitors typically display limited activity. Further, ATRC-101 has been shown to react in vitro with a majority of human ovarian, non-small cell lung, colorectal, breast cancers and acral melanoma samples from multiple patients. Atreca initiated a Phase 1b first-in-human study of ATRC-101 in patients with select solid tumor cancers in early 2020. Clinical trials to evaluate ATRC-101 in combination with a PD-1 inhibitor and in combination with chemotherapy are planned for 2021, as well as in monotherapy dose expansion cohorts in the ongoing Phase 1b trial.

About Atreca, Inc.
Atreca is a biopharmaceutical company developing novel antibody-based immunotherapeutics generated by its differentiated discovery platform. Atreca’s platform allows access to an unexplored landscape in oncology through the identification of unique antibody-target pairs generated by the human immune system during an active immune response against tumors. These antibodies provide the basis for first-in-class therapeutic candidates, such as our lead product candidate ATRC-101. A Phase 1b study evaluating ATRC-101 in multiple solid tumor cancers is currently enrolling patients. For more information on Atreca, please visit

Forward-Looking Statements
This release contains forward-looking statements regarding our strategy and future plans, including statements regarding the development of ATRC-101 and our clinical and regulatory plans, and the timing thereof. These forward-looking statements include, but are not limited to, statements about our plans, objectives, representations and contentions and are not historical facts and typically are identified by use of terms such as “believe,” “planned,” and similar words, although some forward-looking statements are expressed differently. Our actual results may differ materially from those indicated in these forward-looking statements due to risks and uncertainties related to the initiation, timing, progress and results of our research and development programs, preclinical studies, clinical trials, regulatory submissions, and other matters that are described in our most recent Annual Report on Form 10-K and Quarterly Report on Form 10-Q filed with the Securities and Exchange Commission (SEC) and available on the SEC’s website at, including the risk factors set forth therein. Investors are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date of this release, and we undertake no obligation to update any forward-looking statement in this press release, except as required by law.

Atreca, Inc.
Herb Cross
Chief Financial Officer

Alex Gray, 650-779-9251

Sheryl Seapy, 949-903-4750
Source: Atreca, Inc.


Source: Atreca, Inc.