However, there was significantly higher tumor-to-muscle ratio of [68Ga]Ga-DOTA-Siglec-9 in the FAP-IL2v-treated group than in the vehicle-treated group 7 days after baseline imaging (2.6 ± 0.091 vs. 2.1 ± 0.17, P = 0.026). The gene discussed is FAP; the disease is neoplasm.