In particular, the rTg4510 tauopathy‐like phenotype requires a ~70‐copy tau‐transgene insertion causing a 244‐kb deletion in the Fgf14 gene locus and a ~7‐copy tTA‐transgene insertion causing a 508‐kb deletion that disrupts another five genes (Gamache et al, 2019). The gene discussed is MAPT; the disease is tauopathy.