ST-0000011 7/Williams Sx Gene: SLC6A3 Interval: IVS 2 Cytogenetic nomenclature: ish del(7)(q11.23q11.23)(LIMK1-) [dpsc_display_product] Written by: Peter Rogan on August 25, 2009.Last revised by: May 18, 2011. Posted in and tagged 7/Williams Sx Gene:.