Dr. William Cao | Founder, Chairman, and Chief Executive Officer |
Dr. Martina Sersch | Chief Medical Officer |
Kevin Xie | Chief Financial Officer |
Joe Catanzaro | Piper Sandler |
Nick Abbott | Wells Fargo |
Justin Zelin | BTIG |
Ladies and gentlemen, thank you for standing by. Welcome to the Gracell Biotechnologies Fourth Quarter and Full Year 2021 Conference Call. [Operator Instructions] I will now turn the conference call over to Dr. Kevin Xie, CFO. Please go ahead.