New commitments by investors in Boston-based Omega Funds have put the firm on track to deploy $438 million into new and existing life sciences companies during what Managing Director Otello Stampacchia called "the most exciting time to be investing in life sciences in a generation." The final close adds to what's becoming a busy season for fund rollouts, punctuated so far this month by announcements of closing for a new series A-focused $210 million fund from Perceptive Advisors and a new $115 million med-tech-focused fund from Israel's Peregrine Ventures.