Melinta Therapeutics, Inc. announced the appointment of Lisa DeFrancesco as senior vice president of investor relations (IR) reporting to Dan Wechsler, president and chief executive officer. DeFrancesco joins Melinta from Allergan where she served most recently as vice president of IR. DeFrancesco's appointment follows the planned departure of John Bluth, executive vice president of investor relations and corporate communications, who left Melinta at the end of December.