A Homocystinuria (HCU) day 17th of October 2015 Posted on May 29, 2015June 30, 2015 by combinedmedia A Homocystinuria (HCU) day is being planned for the 17th of October 2015. It is being organised in conjunction with Nutricia. Hopefully it will be a great day for everyone. More details to follow soon.