The viability analysis indicated that FKBP1B overexpression induced an increase in cisplatin sensitivity, matching up the cisplatin response values of the sensitive OVCAR3 tumor line, whereas no changes were observed in the group transfected with PAX9. The half maximal inhibitory concentration (IC50) was 1.3 μg/mL (SD ± 0.08) for the OVCAR3-R FKBP1B group and 2 μg/mL (SD ± 0.02) for the control group (OVCAR3 R-MOCK), which yielded a resistance index between these two groups of 1.53 (p ≤ 0.01) (Fig. 4E). Here, PAX9 is linked to neoplasm.