Nicholas Naclerio has become president of South San Francisco-based ParAllele BioScience and has joined the company’s board of directors. Most recently, he was an independent strategic consultant to life science companies and venture capital groups. Prior to that, he was chief business officer and a senior vice president at Zyomyx. Naclerio holds a PhD from the University of Maryland, a master’s equivalent from the University of Cambridge in England, and a bachelor’s degree from Duke University.