CHRNA7 and schizophrenia: A direct genetic association of CHRNA7 with these disorders is controversial; many markers (i.e., the dinucleotide marker D15S1360 in intron 2 of the CHRNA7 gene and other microsatellite markers) in the vicinity of the CHRNA7 gene at 15q13-q14, which have a strong association with schizophrenia, have been reported [74].