MIIP and neoplasm: Furthermore, immunoblotting analysis of tumor tissues of clinical samples indicated MIIP S303 phosphorylation inversely correlates with PP1 levels (Supplementary Fig. 6d, e, upper panel); however, we found MIIP pS303 levels in tumor tissues were not correlated with total MIIP levels (Supplementary Fig. 6d, e, bottom panel), and MIIP levels even dropped in certain proportion of tumor tissues compared with the normal counterparts (Supplementary Fig. 6d).