The RMCE cassette present in TI{TI}LrrkKO has been has been replaced by cDNA sequence (followed by a polyA tail) encoding mutant Hsap\LRRK2 carrying the pathogenic G2019S variant, resulting in a locus in which the Hsap\LRRK2 coding sequence is expressed under the control of endogenous Lrrk regulatory sequences.
See also LrrkhLRRK2.G2019S.
Hsap\LRRK2Lrrk.G2019S is not rescued by Hsap\LRRK2UAS.cVa/Scer\GAL4GH146