There is news about a genetic component of schizophrenia which can be found on Medical Nes today. Dial in schizophrenia on their site.
I think that they first theorised that schizophrenia had a genetic component about 80 years ago. And they are still yet to find any convincing evidence. For the past thirty years intensive research into schizophrenia genes have failed to find anything that is consistent across studies. There is also no sufficient evidence to suggest it is either a brain disease or a chemical imbalance.It's my washing machine that has sockomania!
Seriously - genetics is a very complicated study, and to find a gene for schzophrenia shoudl be a great help for the future.