Operator Good day, and thank you for standing by. Welcome to the Calithera Biosciences First Quarter 2021 Earnings Call. [Operator Instructions] I would now like to hand the conference over to your first speaker today, Stephanie Wong. Please go ahead. Stephanie Wong -- Chief Financial Officer Thanks, Jeff. Good afternoon, everyone. Welcome to our first quarter 2021 Conference Call. Joining me today are Susan Molineaux, Founder, President and CEO; and Keith Orford Chief, Medical Officer. Earlier this afternoon, we issued a press release, which included an overview of our first quarter 2021 financial and operational results, which can be accessed through our website at calithera.com. Before we begin, I would like to remind you that today's discussion will include statements about our future expectations, plans and prospects that constitute forward-looking statements for purposes of the Safe Harbor provisions under the Private Securities Litigation Reform Act of 1995. Actual results may differ materially from those indicated by these forward-looking statements as a result of various important factors, including those discussed in the Risk Factors section of our periodic filings with the SEC.