Nektar Stock Down On Disappointing Breast Cancer Study Data

 | Sep 26, 2019 11:27PM ET

Nektar Therapeutics (NASDAQ:NKTR) updated preliminary data from one cohort of the phase I/II PIVOT-02 study, evaluating its immuno-oncology candidate, bempegaldesleukin, in combination with Bristol-Myers’ (NYSE:BMY) PD-1 inhibitor, Opdivo (nivoumab) in patients with advanced or metastatic triple-negative breast cancer (“TNBC”), came in below market expectations. The data was presented at the CRI-CIMT-EATI-AACR International Cancer Immunotherapy Conference held in France.

Preliminary data showed that 13% of the patients achieved a confirmed overall objective response rate (“ORR”). All the patients achieving a confirmed overall ORR received at least one prior chemotherapy regimen.

Meanwhile, the company stated that the updated data supports potential future development of bempegaldesleukin plus Opdivo in combination with chemotherapy for TNBC patients. We expect the company to provide more details from the PIVOT-02 study on its third-quarter earnings call anticipated in November.

In response to the disappointing data, Nektar’s shares fell 6.6% on Sep 26. In fact, shares of the company have declined 71.2% in the past year compared with the industry ’s decrease of 22.2%.