Comment from Marjorie Wallace, chief executive of the mental health charity SANE, on the study of the genetics of schizophrenia, published today in the journal Nature:
"The search for the causes of schizophrenia and bipolar disorder is vital if we are to find more effective treatments and thereby reduce the stigma associated with these conditions. However, as this study confirmed, it is unlikely that we will find a simple answer, or indeed a single gene.
"Research carried out at our centre is looking at whether schizophrenia may be the price humans pay for the development of higher functions of the brain such as language. The answer to these elusive questions goes well beyond genetic research."