2 Chassaing Chassaing N N Martin Martin L L Calvas Calvas P P Le Bert Le Bert M M Hovnanian Hovnanian A A Pseudoxanthoma elasticum: a clinical, pathophysiological and genetic update including 11 novel ABCC6 mutations Pseudoxanthoma elasticum: a clinical, pathophysiological and genetic update including 11 novel ABCC6 mutations J Med Genet. This evidence concerns the gene ABCC6 and pseudoxanthoma elasticum (inherited or acquired).