The analysis found that a subgroup of patients experiencing a temporary inflammation flare at enrollment accounted for most of the variability seen in the placebo arm. Among patients with more stable baseline inflammation, ACR20 response rates were 79% for resomelagon 40 mg versus 55% for placebo, echoing earlier EXPAND study results.

“These results give us a clearer basis for designing our Phase 3 trial,” says Thomas Jonassen, Chief Scientific Officer of SynAct.

The company is also evaluating strategic options, including licensing deals or a potential sale, alongside continued development of host-directed therapies for infectious diseases such as dengue.