Schizophrenia is a chronic, debilitating mental disorder affecting about 1% of the general population worldwide [1,2]. This condition is characterized by positive symptoms (hallucinations and delusions), negative symptoms (social withdrawal and apathy) and cognitive symptoms [3]. Schizophrenia is a heterogeneous disorder with unknown etiology. Multiple factors such as genetic risks and environmental factors like childhood trauma and social disadvantages have been implicated as risk factors for schizophrenia [4,5]. It has been found that the genetic contribution is a significant risk factor for schizophrenia with heritability ranging from 80% - 30% depending on the degree of family relationship with the proband [6,7]. Genome wide association
