Abstract
This review presents the current knowledge on hypophosphatasia, a rare genetic disease of very variable severity (from lethal to mild) and clinical presentation, caused by defective production of tissue-non-specific alkaline phosphatase (TNSALP). Hypophosphatasia can affect babies in utero as well as infants, children, and adults. The article first presents the genetics of TNSALP and its many known mutations underlying the disease. Then, it presents the epidemiology, classification, and clinical presentation of the six different forms of the disease (perinatal lethal, prenatal benign, infantile, childhood, adult, and odontohypophosphatasia) as well as the essential diagnostic clues. The last section on treatment presents a survey of the therapeutic approaches, up to the ongoing phase 2 studies of enzyme replacement therapy.
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Maria Luisa Bianchi has received honoraria and travel reimbursement from Alexion Pharmaceuticals for consultation and for speaking at meetings.
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Bianchi, M.L. Hypophosphatasia: an overview of the disease and its treatment. Osteoporos Int 26, 2743–2757 (2015). https://doi.org/10.1007/s00198-015-3272-1
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DOI: https://doi.org/10.1007/s00198-015-3272-1