The most recent KLS is available through the KLS Foundation web site - there was a conference held in the US in 2015. Videos of the key speakers at the conference are available via this web site - along with key notes... there are 15 videos in all... the information presented by Arnulf is particularily interesting, after this conference the KLS foundation provide a grant for some new research into the condition. Details of this can be found here: KLS Reaseach January 2016.
At present there is no known cure or treatment for KLS that promises success - there are a number of drugs on trial with a whole variety of side effects - so far we have tried:
There are other drugs and treatment available to try - as we understand it, there are not yet any proved treatment that guarantees success as so little information is recorded.
If you would like to know how we have got on with these, then please get in touch, but so far we have had no real success.
What our son needs at present is for someone to be there for him 24/7 whilst in episode to ensure he is safe and his nutritional needs are met - they have to be available at very short notice and have to put their lives on hold until the episode passes. For the majority of our first year we have treated the condition with rest, understanding, supervision and gut instinct - choosing which battles are worth fighting and which aren't... the whole family lives on "standby".
The most interesting and up to date information I have heard was at the International Pediatric Sleep Association (IPSA 2012) Conference in Manchester 2012, when I attended a KLS parent session with my family and heard Prof Arnulf from France and Prof Mignot from Stanford (USA) talk about the condition and the latest findings. I wrote an account of the day which you can find here: KLS Conference notes.
Globally there is a research project happening at Stanford University in America where they hope to one day find a cause for KLS and one day a cure for KLS - details of which can be found here - we have sent blood off for this from our son, his parents and one of our son's peers. (Spring 2012), but have not heard any significant news.
There are a number of research papers and articles published on Kleine Levin Syndrome including:
Further articles can be found in this on line drop box - which is shared between a number of KLS families around the world.
Some articles may be more relevant than others, but all of them relate to KLS in some way - and have helped some patients in one way or another. I highly recommend that you have a look and browse through when you have a spare hour or so.