%0 Journal Article %T The phosphatase PPM1A inhibits triple negative breast cancer growth by blocking cell cycle progression %A Abhijit Mazumdar %A Gordon B. Mills %A Graham Poage %A Jamal Hill %A Lakshmi Reddy Bollu %A Powel H. Brown %A William M. Tahaney %A Yun Zhang %J Archive of "NPJ Breast Cancer". %D 2019 %R 10.1038/s41523-019-0118-6 %X PPM1A is underexpressed in ER-negative breast cancer and correlates with poor survival. a PPM1A is underexpressed in ER-negative breast cancer compared to ER-positive breast cancer in eight publically available datasets. Center lines show median, whiskers represent 95% confidence intervals, and dashes indicate maximum and minimum values. p-values were calculated using Student¡¯s t-test (****p£¿<£¿0.0001). b Low PPM1A expression correlates with poor survival. Kaplan¨CMeier curves were generated from the van de Vijver dataset, showing overall survival of all breast cancer (n£¿=£¿295), ER-positive (n£¿=£¿266), and ER-negative (n£¿=£¿69) patients. High and low expression groups were dichotomized by median PPM1A expression in each group. Curve comparisons of stratified groups were calculated using the Mantel-Cox log-rank test, with p£¿<£¿0.05 being considered statistically significan %K Breast cancer %K Predictive markers %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6659706/