biostudies-literatureCorkery DPCIHR1059-69https://www.ebi.ac.uk/biostudies/studies/S-EPMC4612451biostudies-literatureUnknown14(7)The taxanes are used alone or in combination with anthracyclines or platinum drugs to treat breast and ovarian cancer, respectively. Taxanes target microtubules in cancer cells and modifiers of taxane sensitivity have been identified in vitro, including drug efflux and mitotic checkpoint proteins. Human epidermal growth factor receptor 2 (HER2/ERBB2) gene amplification is associated with benefit from taxane therapy in breast cancer yet high HER2 expression also correlates with poor survival in both breast and ovarian cancer. The pre-mRNA splicing factor 4 kinase PRP4K (PRPF4B), which we identified as a component of the U5 snRNP also plays a role in regulating the spindle assembly checkpoint (SAC) in response to microtubule-targeting drugs. In this study, we found a positive correlation betCell cycle (Georgetown, Tex.)PRP4K is a HER2-regulated modifier of taxane sensitivity.PMC461245163289-2Le Page CMeunier LProvencher DMes-Masson AMDellaire GCorkery DPfalsePRP4K is a HER2-regulated modifier of taxane sensitivity.The taxanes are used alone or in combination with anthracyclines or platinum drugs to treat breast and ovarian cancer, respectively. Taxanes target microtubules in cancer cells and modifiers of taxane sensitivity have been identified in vitro, including drug efflux and mitotic checkpoint proteins. Human epidermal growth factor receptor 2 (HER2/ERBB2) gene amplification is associated with benefit from taxane therapy in breast cancer yet high HER2 expression also correlates with poor survival in both breast and ovarian cancer. The pre-mRNA splicing factor 4 kinase PRP4K (PRPF4B), which we identified as a component of the U5 snRNP also plays a role in regulating the spindle assembly checkpoint (SAC) in response to microtubule-targeting drugs. In this study, we found a positive correlation bet2015-01-01T00:00:00Z20152025-08-24T03:08:38.06Z2025-08-24T03:08:38.06ZS-EPMC46124512560263010.1080/15384101.2015.1007775