No, we don't think so. It was proposed for non-astronomical reasons to explain the seemingly periodic extinction record every 26 million years, but since this was proposed over two decades ago, the basis for the claim has evaporated, as has the nee for a star to cause extinctions in the way that was imagined. You might want to look at a previous question in this archive which is at either q722.html or at q744.htm depending on which Ask the Astronomer FAQ archive you are currently viewing.