Abstract：
:We present results of homozygosity mapping in two siblings affected with early onset Parkinson's disease (EOPD) and mutation screening of ATP13A2 in these and other Iranian EOPD patients. Genome-wide SNP homozygosity analysis revealed linkage to a locus that included ATP13A2, and sequencing of the gene revealed a novel p.Gln858*-causing mutation in the homozygous state in the siblings. Sequencing of the gene in seven other unrelated EOPD patients previously shown not to have mutations in PRKN, DJ-1, PINK1, and LRRK2 identified the same homozygous p. Gln858*-causing mutation in another patient. Haplotype analysis revealed that two alleles harboring the mutation were not identical by decent. The variation identified represents the 13th known disease causing mutation in ATP13A2. The clinical features of the patients who harbored the mutation are compared to those of previously reported patients with mutations in ATP13A2. Bradykinesia and rigidity, but not tremor, were reported in nearly all the patients. l-dopa administration, though initially effective, usually caused dyskinesia upon prolonged usage. Eye movement abnormalities including saccades and supranuclear gaze palsy, were almost always observed. Dystonia and bulbar anomalies were common but more variable manifestations. Although a degree of cognitive decline was found in most of the patients, the decline was often mild and absent in one patient. Age at onset of symptoms was usually in the second decade of life, and sometimes in the third decade.
journal_name
Neurosci Lettjournal_title
Neuroscience lettersauthors
Malakouti-Nejad M,Shahidi GA,Rohani M,Shojaee SM,Hashemi M,Klotzle B,Fan JB,Elahi Edoi
10.1016/j.neulet.2014.06.023subject
Has Abstractpub_date
2014-08-08 00:00:00pages
106-11eissn
0304-3940issn
1872-7972pii
S0304-3940(14)00495-9journal_volume
577pub_type
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