Pantothenate kinase-associated neurodegeneration (Hallerworden–Spatze disease): clinical aspects, diagnosis, treatment (literature review and own data)
DOI:
https://doi.org/10.14739/2310-1210.2021.5.222677Keywords:
pantothenate kinase-associated neurodegeneration, brain, Hallervorden–Spatz disease, neurodegeneration with brain iron accumulationAbstract
Aim. To analyze current data of scientific literature on the etiology, pathogenesis, approaches to the diagnosis and treatment of rare orphan disease – pantothenate kinase-associated neurodegeneration and to describe the clinical case of this disease.
Pantothenate kinase-associated neurodegeneration (PKAN) is a rare inherited autosomal recessive disorder caused by mutations in the PANK2 gene, which is located at the chromosomal locus: 20p13-p12.3.
The article presents a literature review and a case report of the diagnosis and treatment of 8-year-old girl with pantothenate kinase-associated neurodegeneration who suffered from progressive motor impairment.
Among the dominant clinical manifestations is a growing extrapyramidal motor disorder, the so-called “dystonic storm”, which can range from severe sensorimotor motor deficits in infants and young children to mild parkinsonism in adults. MRI signs in the form of specific changes in the T2-weighted mode, which detects typical areas of hyperintensive signal in globus pallidus, surrounded by a border of hypointensive signal (“tiger’s eye”) are particular important. Neuroimaging data most likely make possible to suspect a correct diagnosis, reducing the time and cost of additional examinations.
There is no pathogenetic treatment of this disease now. The main directions of currently available symptomatic drug therapy are described. Clinical trials of detoxifying drugs that reduce iron levels in the body (chelation) and surgical treatments are currently underway.
Conclusions. The presented clinical observation once again confirms the complexity of the diagnostic search for orphan diseases of the nervous system. A key place in the diagnosis of pantothenate kinase-associated neurodegeneration belongs to the neuroimaging methods and molecular genetic testing data.
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