Delineation of ADPRHL2 Variants : Report of Two New Patients with Review of the Literature

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ADPRHL2 is involved in posttranslational modification and is known to have a role in physiological functions such as cell signaling, DNA repair, gene control, cell death, and response to stress. Recently, a group of neurological disorders due to ADPRHL2 variants is described, characterized by childhood-onset, stress-induced variable movement disorders, neuropathy, seizures, and neurodegenerative course. We present the diagnostic pathway of two pediatric patients with episodic dystonia and ataxia, who later had a neurodegenerative course complicated by central hypoventilation syndrome due to the same homozygous ADPRHL2 variant. We conducted a systematic literature search and data extraction procedure following the Preferred Reporting Items for Systematic Review and Meta-Analysis 2020 statement in terms of patients with ADPRHL2 variants, from 2018 up to 3 February, 2023. In total, 12 articles describing 47 patients were included in the final analysis. Median age at symptom onset was 2 (0.7-25) years, with the most common presenting symptoms being gait problems (n = 19, 40.4%), seizures (n = 16, 34%), ataxia (n = 13, 27.6%), and weakness (n = 10, 21.2%). Triggering factors (28/47; 59.5%) and regression (28/43; 60.4%), axonal polyneuropathy (9/23; 39.1%), and cerebral and cerebellar atrophy with white matter changes (28/36; 77.7%) were the other clues. The fatality rate and median age of death were 44.6% (n = 21) and 7 (2-34) years, respectively. ADPRHL2 variants should be considered in the context of episodic, stress-induced pediatric and adult-onset movement disorders and seizures.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - year:2024

Enthalten in:

Neuropediatrics - (2024) vom: 16. Feb.

Sprache:

Englisch

Beteiligte Personen:

Öz Yıldız, Sibel [VerfasserIn]
Yalnızoğlu, Dilek [VerfasserIn]
Şimsek Kiper, Pelin Özlem [VerfasserIn]
Göçmen, Rahşan [VerfasserIn]
Soğukpınar, Merve [VerfasserIn]
Utine, Gülen Eda [VerfasserIn]
Haliloğlu, Göknur [VerfasserIn]

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Journal Article

Anmerkungen:

Date Revised 16.02.2024

published: Print-Electronic

Citation Status Publisher

doi:

10.1055/s-0044-1779618

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM368552616