In harmony with the past investigation by [70], our current study also demonstrated the upregulation of proapoptotic markers, namely, caspase-3, -8, and -9 in the ALL MOLT-4 cancer cells, induced by the supplementation of 30 μg/ml and 40 μg/ml CeO2 NPs prepared using leaf extract of M. citrifolia. The gene discussed is CASP3; the disease is cancer.