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Shares of MediciNova Inc. jumped 85% in after-hours trading on Thursday after the biotechnology company said new research showed its experimental compound tipelukast (MN-001) and its metabolite MN-002 could offer a new therapeutic approach for atherosclerosis.
The study, published in the Journal of Atherosclerosis and Thrombosis, found that MN-002 enhanced the body’s ability to remove cholesterol from immune cells by increasing the activity of transport proteins ABCA1 and ABCG1. The mechanism could help limit cholesterol buildup in arteries, a key factor in the development of cardiovascular disease.
The research was conducted in collaboration with a Japanese academic group specializing in lipid and cholesterol metabolism. According to MediciNova, the findings suggest tipelukast may play a role in regulating cholesterol and lipid pathways, with potential applications in atherosclerosis, type 2 diabetes, and dyslipidemia.
MediciNova said the findings add to previous clinical data showing improvements in cholesterol and triglyceride levels among patients with non-alcoholic fatty liver disease (NAFLD) and hypertriglyceridemia, particularly in those with diabetes.
The company is nearing completion of enrollment for a Phase 2 randomized, double-blind, placebo-controlled study evaluating MN-001 in patients with hypertriglyceridemia, type 2 diabetes, and NAFLD.
On Stocktwits, retail sentiment for MediciNova was ‘extremely bullish’ amid ‘extremely high’ message volume.

One user described the move as a “monster” and said they were adding a small position in case the stock climbed further before the market opened.
Another user noted that the next key level to watch was $2.50, adding that they were hoping to see a “big green candle” in the next session.
MediciNova’s stock has declined 43% so far in 2025.
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