Lead Therapeutics, developer of medications for cancer and other infectious diseases, has roped $3 million of an expected $7 million round of debt and rights, reports VentureWire. Based in San Bruno, Calif., it previously brought in $17 million in a first round of venture funding in 2007 from Mustang Ventures, Pappas Ventures and ProQuest Investments. The company conducts most of its research and operations in China.