So today they unveiled two new research papers that used more or less complete genome sequencing of the coding regions of genes(as opposed to SNPs) to identify rare variants in schizophrenia. Basically what they found were more mutations in genes that had already been identified as risk factors...in short there is huge genetic variation in what is identified as a single disease---they basically said they had no way to make a meaningful group of individuals that could be studied or tested independently.

I can't link the originals because they are behind a paywall but here is a summary.

New genetic mutations shed light on schizophrenia

I actually find this encouraging as it makes it unlikely that we will be able to be identified in the future thus eliminating attempts at eugenics before birth. It does make the development of new drugs more difficult as it seems that each of us has a unique condition although it has been previously suggested that this is a pathway disease so net commonalities may still exist(as suggested by the general success of D2 antagonists)