In total, 75 BM biopsies were stained for CCN2 by the 10095S antibody, of which 55 MPN cases (10 × ET, 10 × post-ET MF, 10 × PV, 10 × p-PV MF, 5 × pre-PMF, 10 × PMF) and 20 control cases with normal marrow. Here, CCN2 is linked to myeloproliferative disorder.