It might sound a bit in left field at first....but there's a study going on at SunnyBrook that might shed some light on possible indications where Apabetalone might come into play:

https://www.theglobeandmail.com/life/health-and-fitness/advsunnybrook/what-do-the-eyes-tell-us-about-mental-health/article34697128/?utm_source=facebook.com&utm_medium=Referrer%3A+Social+Network+%2F+Media&utm_campaign=Shared+Web+Article+Links

We've already had news of the potential impact on degenerative retinal syndrome, or something close to that...I might be a little off on the exact terminology.  Here's what the above linked article says in part: (All bolding is my own)

• The objective is to examine the blood vessels of the retina, which are “a close relative of the blood vessels in the brain,” notes youth psychiatrist Dr. Benjamin Goldstein, who is the director of Sunnybrook’s Centre for Youth Bipolar Disorder, the driving force behind the ongoing research.
• Retinal photography has long been used in studying conditions related to aging, such as Alzheimer’s disease, atherosclerosis (hardening of the arteries) and diabetes.
• “The retina offers the only way of directly visualizing central nervous system blood vessels,” explains Dr. Goldstein, who is also director of research in Sunnybrook’s Department of Psychiatry.
• “Blood-vessel problems may be one of the core causes of bipolar disorder, and [retinal photography] is a very inexpensive, non-invasive way of understanding this link.”