Activity in some clinical parameters is leading Atyr Pharma Inc. to plan a sit-down with regulators, even though the tRNA synthetase-derived drug efzofitimod missed its primary endpoint of steroid tapering in the phase III Efzo-Fit study against the interstitial lung disease pulmonary sarcoidosis (PS). CEO Sanjay Shukla said his firm maintains “a high degree of conviction” regarding the candidate. “But I want to make sure we have the best briefing book possible” before consulting with the U.S. FDA, which will happen as soon as possible.