... pyrophosphate dihydrate deposition disease (CPPDD). CPPDD, also called chondrocalcinosis or pseudogout, is characterized by the accumulation of ... progressive ankylosis protein SLC62A1 Tests of ANKH PubMed CHONDROCALCINOSIS 2; CCAL2 ANKH INORGANIC PYROPHOSPHATE TRANSPORT REGULATOR; ANKH ...