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CAR T cells target HER2 expression in advanced sarcomas



– Sarcomas of bone and soft tissues are considered to be “antigenically cold” tumors, with few identifiable mutations that may be susceptible to targeted therapies.

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Some sarcoma subtypes such as osteosarcoma and rhabomyosarcoma, however, frequently express the human epidermal growth factor receptor 2 on tumor surfaces. Although HER2 expression in these tumors is at too low a level for HER2-targeted therapies such as trastuzumab (Herceptin), HER2 appears to be an opportunistic target for chimeric antigen receptor (CAR) T-cell therapy, according to Shoba Navai, MD, from Baylor College of Medicine, Houston.

In a video interview at the 2019 annual meeting of the American Association for Cancer Research, Dr. Navai describes her team’s early experience using a HER2-targeted CAR-T cell construct and preinfusion lymphodepletion in patients with advanced sarcomas.

Development of the CAR-T cell construct is supported by the Cancer Prevention & Research Institute of Texas, Stand Up to Cancer, the St. Baldrick’s Foundation, Cookies for Kids’ Cancer, Alex’s Lemonade Stand, and a grant from the National Institutes of Health. Dr. Navai reported having no disclosures.

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