LRP6 and plasma cell myeloma: Although there is variation in the raw values between these two independent experiments, FACS analysis validated GFP+ 5TGM1 myeloma cell infiltration within the bone marrow and spleen at the endstage of this model, reported in previous studies.(24, 27, 32) The proportion of GFP+ 5TGM1 cells within the bone marrow was not significantly altered in mice treated with anti‐LRP6 alone (Fig. 7Ai, ii).