Alternative titles and symbols : Palmoplantar keratoderma with esophageal cancer; Keratosis palmaris et plantaris with esophageal cancer;
Description : Palmoplantar keratoderma (PPK) is a complex group of hereditary syndromes that have
been classified into diffuse, punctate, and focal forms according to the pattern of
hyperkeratosis on the palms and soles (Lucker et al., 1994). For a discussion of phenotypic
and genetic heterogeneity of palmoplantar keratoderma, see epidermolytic PPK (144200).;
Inheritance : Autosomal dominant;
Molecular basis : Caused by mutation in the romboid 5, Drosophila, homolog of, 2 gene (RHBDf2, 614404.0001
);