Rapt Therapeutics Inc. has decided to shut down its zelnecirnon (RPT-193) program in asthma and atopic dermatitis, causing the company’s stock (NASDAQ:RAPT) to sharply decline Nov. 11.
On the verge of top-line data from its phase IIb trial with oral small-molecule CC chemokine receptor 4 (CCR4) antagonist zelnecirnon in atopic dermatitis (AD), due around the middle of this year, Rapt Therapeutics Inc. said the U.S. FDA has imposed a clinical hold on that study with the otherwise promising drug, also known as RPT-193, in AD as well as the phase IIa trial with the same compound in asthma.
Rapt Therapeutics Inc. has described chemokine CCR4 receptor antagonists reported to be useful for the treatment of cancer, allergic asthma, contact dermatitis, allergic rhinitis, immunological, inflammatory, cardiovascular and metabolic disorders.
Rapt Therapeutics Inc. CEO Brian Wong said RPT-193 monotherapy in atopic dermatitis (AD) “looks really promising, but there’s still quite a bit to learn” about the small molecule, designed to inhibit the migration of Th2 cells into inflamed tissues by blocking CCR4. Investors saw enough to push the shares of South San Francisco-based Rapt up 115.5%, or $21.45, to close at $40.02, after trading as high as $41.99 during the day.
HONG KONG – Rapt Therapeutics Inc., of San Francisco, and Seoul, South Korea-based Hanmi Pharmaceutical Co. Ltd. entered a license agreement for Rapt’s FLX-475 in Asia. FLX-475 is an oral, small-molecule CCR4 antagonist for cancer treatment.
HONG KONG – Rapt Therapeutics Inc., of San Francisco, and Seoul, South Korea-based Hanmi Pharmaceutical Co. Ltd. entered a license agreement for Rapt’s FLX-475 in Asia. FLX-475 is an oral, small-molecule CCR4 antagonist for cancer treatment.
