10 Cheang Cheang MC MC Chia Chia SK SK Voduc Voduc D D Gao Gao D D Leung Leung S S Snider Snider J J Ki-67 Index, Her2 status, and prognosis of patients with luminal B breast cancer Ki-67 Index, Her2 status, and prognosis of patients with luminal B breast cancer J Nat Cancer Inst. The gene discussed is ERBB2; the disease is breast carcinoma.