FRAMINGHAM (09/24/2003) - ParAllele BioScience Inc. is under new leadership. Founder Tom Willis recently passed the reins, and his position as president, to Nicholas Naclerio, who also claims a seat on the company's board of directors. With more than 15 years' experience in high technology and biotech, Naclerio is expected to lead the transition from a development-stage company to a leading provider of genetic discovery solutions, according to ParAllele. Willis will continue his full-time commitment to the company as chief scientific officer and board member. Co-founder and director Mostafa Ronaghi, meanwhile, will make the transition from the board of directors to the scientific advisory board.