Clinical Edge

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HER2-Positive Solid Tumors: Molecule Exhibits Antitumor Activity

Key clinical point: PRS-343, a 4-1BB/HER2 bispecific molecule, demonstrated antitumor activity in patients with heavily pretreated, HER2-positive solid tumors.

Major finding: Of 18 evaluable patients, 2 achieved a partial response and 8 had stable disease.

Study details: A phase 1 study of 53 patients.

Disclosures: The study is sponsored by Pieris Pharmaceuticals. Dr. Ku disclosed relationships with Arog Pharmaceuticals, AstraZeneca, Bristol-Myers Squibb, Daiichi Sankyo, Eli Lilly, Merck, Zymeworks, and Pieris Pharmaceuticals.


Ku GY et al. SITC 2019, Abstract O82.