The transgenic construct contains the human GBA gene under the direction of CMV enhancer/chicken beta-actin promoter, rabbit beta-globin intron sequence and the rabbit globin polyA site (pCAGEN) promoter. GBA was modified by site-directed mutagenesis (c.1226A >G) to harbor an asparagine to serine mutation at residue 409 (referred to as N370S). (J:266060)