sentences:  CNVs (and associated polymorphisms) play a role in filling in the gap towards understanding the genetic basis of quantitative traits and the different susceptibilities to autoimmune and neurobiological diseases.Substantial data from all over the world has been collected and analyzed to determine that schizophrenia, indeed, has a strong genetic relationship with a region in the MHC locus on chromosome arm 6.Data and information collected internationally can shed light onto the mysteries of schizophrenia.