In agreement with our results, Bennett et al. found in immunohistochemical (IHC) analysis of a tissue microarray of 3626 patients with invasive ductal carcinoma of the breast that high cytoplasmic IKKα was associated with shorter disease-free survival (also named relapse-free survival) and recurrence-free survival of patients treated with tamoxifen 58. The gene discussed is CHUK; the disease is invasive ductal breast carcinoma.