Abstract
Hypophosphatasia (HPP) is a rare hereditary metabolic disease resulting from the loss-of-function mutation in the ALPL gene encoding tissue-nonspecific alkaline phosphatase (ALP). Clinical presentations are polymorphic and manifest themselves differently depending on the age of disease onset and severity. The occurrence of mild disease, including adult HPP, is challenging to assess due to the high heterogeneity of clinical signs and a lower diagnosis rate. Doctors’ awareness of HPP is the fundamental factor affecting its detection rate. This paper reviews the conclusions of the Expert Council on HPP diagnosis and potentialities to improve diagnosis. Ten experts from various Russian regions participated in panel sessions. Each member shared the experience and established practice on the diagnosis of orphan diseases in his/her region and gave suggestions to optimize the diagnostic approach to HPP. The result was the development of a management algorithm and routing of patients from identifying symptoms to decision making on prescribing enzyme-replacement therapy and subsequent follow-up at every level of medical care . KEYWORDS: hypophosphatasia, alkaline phosphatase, orphan diseases, ALPL, enzyme-replacement therapy, routing. FOR CITATION: Zakharova E.Yu., Varlamova T.V., Voronin S.V. et al. Unsolved diagnostic issues of hypophosphatasia: Expert Council. Russian Medical Inquiry. 2021;5(9):605–614 (in Russ.). DOI: 10.32364/2587-6821-2021-5-9-605-614.
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