Details

Autor(en) / Beteiligte

• Pavone, Piero
• Pappalardo, Xena Giada
• Mustafa, Naira
• Cho, Sung Yoon
• Jin, Dong Kyu
• Incorpora, Gemma
• Falsaperla, Raffaele
• Marino, Simona Domenica
• Corsello, Giovanni
• Parano, Enrico
• Ruggieri, Martino

Titel

Alternating Hemiplegia of Childhood: neurological comorbidities and intrafamilial variability

Ist Teil von

• Italian journal of pediatrics, 2022-02, Vol.48 (1), p.29-29, Article 29

Ort / Verlag

England: BioMed Central

Erscheinungsjahr

2022

Quelle

MEDLINE

Beschreibungen/Notizen

• Alternating of Childhood (AHC) is an uncommon and complex disorder characterized by age of onset before 18 months with recurrent hemiplegia of one or either sides of the body or quadriplegia. The disorder is mainly caused by mutations in ATP1A3 gene, and to a lesser extent in ATP1A2 gene. In AHC neurological co-morbidities are various and frequently reported including developmental delay, epilepsy, tonic or dystonic spells, nystagmus,autonomic manifestations with intrafamilial variability. Clinical and genetic findings of a couple of twins (Family 1: Case 1 and Case 2) and a couple of siblings (Family 2: Case 3 and Case 4) coming from two different Italian families affected by AHC were deeply examined. In twins of Family 1, a pathogenic variant in ATP1A3 gene (c.2318A>G) was detected. In siblings of Family 2, the younger brother showed a novel GRIN2A variant (c.3175 T > A), while the older carried the same GRIN2A variant, and two missense mutations in SCNIB (c.632 > A) and KCNQ2 (1870 G > A) genes. Clinical manifestations of the four affected children were reported along with cases of AHC drawn from the literature. Hemiplegic episode is only a sign even if the most remarkable of several and various neurological comorbidities in AHC affected individuals. Molecular analysis of the families here reported showed that clinical features of AHC may be also the result of an unexpected genetic heterogeneity.