The Phenotypic Continuum of <i>ATP1A3</i> -Related Disorders
Aikaterini Vezyroglou, Rhoda Akilapa, Katy Barwick, Saskia Koene, Catherine A. Brownstein, Muriel Holder‐Espinasse, Andrew E. Fry, Andrea H. Németh, George K. Tofaris, Eleanor Hay, Imelda Hughes, Sahar Mansour, Santosh Mordekar, Miranda Splitt, Peter D. Turnpenny, D.Z. Demetriou, Tamara T. Koopmann, Claudia Ruivenkamp, Pankaj B. Agrawal, Lucinda Carr, Virginia Clowes, Neeti Ghali, Susan Holder, Jessica A. Radley, Alison Male, Sanjay M. Sisodiya, Manju A. Kurian, J. Helen Cross, Meena Balasubramanian
Abstract
BACKGROUND AND OBJECTIVES: variants published thus far in association with human neurologic disease. Our aim is to demonstrate the heterogeneous clinical spectrum of the gene and look for phenotypic overlap between patients that will streamline the diagnostic process. METHODS: variants were identified within the cohort of the Deciphering Developmental Disorders study with additional cases contributed by collaborators internationally. Detailed clinical data were collected with consent through a questionnaire completed by the referring clinicians. PubMed was searched for publications containing the term "ATP1A3" from 2004 to 2021. RESULTS: variants. The most common variants are associated with well-defined phenotypes, while more rare variants often result in very rare symptom correlations, such as are seen in our study. Combined Annotation-Dependent Depletion (CADD) scores of pathogenic and likely pathogenic variants were significantly higher and variants clustered within 6 regions of constraint. DISCUSSION: -related condition, rather than applying diagnostic criteria alone.