IKBKB and neoplasm: Previously, we reported that K5-IKKβ transgenic mice develop histologic and inflammatory alterations in both the palate and the non-glandular stomach, which could underlie their predisposition to develop tumours in the oral epithelia.5 With the aim of understanding the role played by IKKβ in the oral epithelia, we studied these organs in K5-IKKβ mice in depth.