Angela Qian's questions to Arcturus Therapeutics Holdings Inc (ARCT) leadership • Q2 2025
Question
Angela Qian from Canaccord Genuity inquired if Arcturus plans to advance to a higher dose cohort in the CF trial before engaging with regulators and asked what preclinical data suggested regarding dose response.
Answer
President and CEO Joseph Payne confirmed the current Phase 2 trial design includes a third, 15mg dose cohort. Regarding dose response, he noted that while it is generally expected, the CF field has also seen a "threshold effect" with modulators, where efficacy plateaus beyond a certain dose. Therefore, a lack of linear dose response would not necessarily be a negative signal.