RGD Reference Report - Genotype-phenotype correlations in alternating hemiplegia of childhood. - Rat Genome Database

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Genotype-phenotype correlations in alternating hemiplegia of childhood.

Authors: Sasaki, Masayuki  Ishii, Atsushi  Saito, Yoshiaki  Morisada, Naoya  Iijima, Kazumoto  Takada, Satoshi  Araki, Atsushi  Tanabe, Yuko  Arai, Hidee  Yamashita, Sumimasa  Ohashi, Tsukasa  Oda, Yoichiro  Ichiseki, Hiroshi  Hirabayashi, Shininchi  Yasuhara, Akihiro  Kawawaki, Hisashi  Kimura, Sadami  Shimono, Masayuki  Narumiya, Seiro  Suzuki, Motomasa  Yoshida, Takeshi  Oyazato, Yoshinobu  Tsuneishi, Shuichi  Ozasa, Shiro  Yokochi, Kenji  Dejima, Sunao  Akiyama, Tomoyuki  Kishi, Nobuyuki  Kira, Ryutaro  Ikeda, Toshio  Oguni, Hirokazu  Zhang, Bo  Tsuji, Shoji  Hirose, Shinichi 
Citation: Sasaki M, etal., Neurology. 2014 Feb 11;82(6):482-90. doi: 10.1212/WNL.0000000000000102. Epub 2014 Jan 15.
RGD ID: 11576279
Pubmed: PMID:24431296   (View Abstract at PubMed)
DOI: DOI:10.1212/WNL.0000000000000102   (Journal Full-text)


OBJECTIVE: Clinical severity of alternating hemiplegia of childhood (AHC) is extremely variable. To investigate genotype-phenotype correlations in AHC, we analyzed the clinical information and ATP1A3 mutations in patients with AHC.
METHODS: Thirty-five Japanese patients who were clinically diagnosed with AHC participated in this study. ATP1A3 mutations were analyzed using Sanger sequencing. Detailed clinical information was collected from family members of patients with AHC and clinicians responsible for their care.
RESULTS: Gene analysis revealed 33 patients with de novo heterozygous missense mutations of ATP1A3: Glu815Lys in 12 cases (36%), Asp801Asn in 10 cases (30%), and other missense mutations in 11 cases. Clinical information was compared among the Glu815Lys, Asp801Asn, and other mutation groups. Statistical analysis revealed significant differences in the history of neonatal onset, gross motor level, status epilepticus, and respiratory paralysis in the Glu815Lys group compared with the other groups. In addition, 8 patients who did not receive flunarizine had severe motor deteriorations.
CONCLUSIONS: The Glu815Lys genotype appears to be associated with the most severe AHC phenotype. Although AHC is not generally seen as a progressive disorder, it should be considered a disorder that deteriorates abruptly or in a stepwise fashion, particularly in patients with the Glu815Lys mutation.



Disease Annotations    

Objects Annotated

Genes (Rattus norvegicus)
Atp1a3  (ATPase Na+/K+ transporting subunit alpha 3)

Genes (Mus musculus)
Atp1a3  (ATPase, Na+/K+ transporting, alpha 3 polypeptide)

Genes (Homo sapiens)
ATP1A3  (ATPase Na+/K+ transporting subunit alpha 3)


Additional Information