Page 1 Journal: Clinical Cancer Research Research Article: – Personalized Medicine Version date: 07/12/2016 Full title: Branched chain RNA in situ hybridization for androgen receptor splice variant AR-V7 as a prognostic biomarker for metastatic castration-sensitive prostate cancer Running title: RNA ISH for AR-V7 Authors: Philip J. Saylor 1,2 * 55 Fruit Street, Yawkey 7E Boston, MA 02114 psaylor@mgh.harvard.edu Phone: 617-643-1763 Richard J. Lee 1,2 * 55 Fruit Street, Yawkey 7E Boston, MA 02114 rjlee@mgh.harvard.edu Phone: 617-643-4787 Kshitij S. Arora 1,3 * karora@mgh.harvard.edu Phone: 617-643-6189 Vikram Deshpande 1,3 vdeshpande@mgh.harvard.edu Phone: 617-726-7741 Rong Hu 1,3 rhu7@mgh.harvard.edu Kara Olivier 1 kolivier@partners.org Phone: 617-724-4000 Erika Meneely 1 ebarrett@partners.org Phone: 617-724-4000 Miguel N. Rivera 1,3 mnrivera@mgh.harvard.edu