“Brain On Fire” (***1/2 out of four) was a wrenching drama about a rising young journalist (Chloe Grace Moretz) who is stricken with a rare autoimmune and brain disorder that is misdiagnosed and derails her career and (gradually) her sanity, and causes great concern for everyone around her. Moretz has never been better in a tough role as someone whose life and career are in a painful freefall and director Gérard Barrett documents this in powerful detail and surrounds her with a first-rate supporting cast including Tyler Perry, Carrie Moss, and Richard Arbitage. Reminiscent of “Still Alice” in some ways but this is no disease-movie-of-the-week. Film’s ending is a little pat and abrupt, though.