1. Department of Medical Oncology, Bing Center for Waldenstrom’s Macroglobulinemia, Dana Farber Cancer Institute and Harvard Medical School, Boston, MA;
2. Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA;
3. Department of Medical Oncology, Dana Farber Cancer Institute and Harvard Medical School, Boston, MA;
4. Department of Chemistry, University of Massachusetts, Boston, MA; and
5. Medical Research Council Protein Phosphorylation and Ubiquitylation Unit, College of Life Sciences, University of Dundee, Dundee, United Kingdom