Aldeyra Therapeutics Inc. CEO Todd Brady said that, with new data from a crossover trial with reproxalap in dry eye disease (DED), the question of “approvability has been put to bed,” and the company plans a pre-NDA meeting with U.S. FDA in the third quarter of this year.

With the memory of Dec. 20’s stock-denting, top-line phase III fizzle by Aldeyra Therapeutics Inc. in dry eye disease (DED) still fresh, Palatin Technologies Inc. is launching a late-stage effort in the same indication. Aldeyra offered data from the Tranquility trial with reproxalap – a small-molecule, immune-modulating covalent inhibitor of reactive aldehyde species, known as RASP, formulated as an ophthalmic solution – that showed a miss on the primary endpoint of ocular redness.

Lexington, Mass.-based Aldeyra Therapeutics Inc.’s phase III win in the study called Invigorate with reproxalap for allergic conjunctivitis (AC) restarted speculation about odds of the drug, a small-molecule, immune-modulating covalent inhibitor of reactive aldehyde species (RASP), to treat dry eye disease (DED). “I do think there is potential read-through,” CEO Todd Brady said, especially with regard to the redness endpoint. A six-week safety study necessary before going to the FDA has not yet started, he told investors during a conference call. “That will require some discussions with the FDA, but I do not think, given the length of the trial, the safety study would impair our guidance of potentially filing NDAs by the end of this year.”