Similar to solid cancers, depletion of HsClpP has been shown to reduce the rate of growth and viability of multiple lines of leukemic cells that show elevated levels of expression ofthe protease. Notably, the loss of HsClpP leads to decreased OXPHOS and increased ROS production resulting from a structurally and functionally compromised Complex II. An interesting finding is that, while the level of UPRmt is elevated consistently across leukemic cell lines with a high level of HsClpP expression, depleting the protease produces no observable impact on either the expression of UPRmt markers or mitochondrial morphology. This is in contrast to the findings in immortalized muscle cells and fibroblasts, which reflects a variation in the potential role of HsClpP in UPRmt among different types of cancer.