It looks like Flex Pharma might have reached the end of its road... Really sad...
Boston-based Flex Pharma will lay off most of its employees and explore a potential sale or merger after ending a mid-stage trial of its lead drug, which targets several diseases including amyotrophic lateral sclerosis, or ALS.
https://www.bizjournals.com/boston/news/2018/06/13/boston-s-flex-pharma-slashes-headcount-eyes-sale.html