<unk><unk>  The cause of CPPD<unk>  is unknown. Increased breakdown of adenosine triphosphate (ATP; the molecule used as energy currency in all living things), which results in increased<unk>  levels in joints, is thought to be one reason why<unk> s may develop. Familial forms are rare. One genetic study found an association between CPPD and a region of chromosome 8q. The gene ANKH is involved in<unk> -related inflammatory reactions and inorganic phosphate transport.
Calcium pyrophosphate dihydrate crystal deposition disease
Gout
Ectopic calcification
Metastatic calcification
AA amyloidosis
Secondary systemic amyloidosis
Crystal arthropathy
Cartilage tumor