作者
Lance H Rodan, Rebecca C Spillmann, Harley T Kurata, Shawn M Lamothe, Jasmine Maghera, Rami Abou Jamra, Anna Alkelai, Stylianos E Antonarakis, Isis Atallah, Omer Bar-Yosef, Frédéric Bilan, Kathrine Bjorgo, Xavier Blanc, Patrick Van Bogaert, Yoav Bolkier, Lindsay C Burrage, Björn U Christ, Jorge L Granadillo, Patricia Dickson, Kirsten A Donald, Christèle Dubourg, Aviva Eliyahu, Lisa Emrick, Kendra Engleman, Michaela Veronika Gonfiantini, Jean-Marc Good, Judith Kalser, Chiara Kloeckner, Guus Lachmeijer, Marina Macchiaiolo, Francesco Nicita, Sylvie Odent, Emily O’heir, Xilma Ortiz-Gonzalez, Marta Pacio-Miguez, María Palomares-Bralo, Loren Pena, Konrad Platzer, Mathieu Quinodoz, Emmanuelle Ranza, Jill A Rosenfeld, Eliane Roulet-Perez, Avni Santani, Fernando Santos-Simarro, Ben Pode-Shakked, Cara Skraban, Rachel Slaugh, Andrea Superti-Furga, Isabelle Thiffault, Richard H van Jaabrsveld, Marie Vincent, Hong-Gang Wang, Pia Zacher, Eric Rush, Geoffrey S Pitt, Ping Yee Billie Au, Vandana Shashi
发表日期
2021/10
期刊
Genetics in medicine
卷号
23
期号
10
页码范围
1922-1932
出版商
Nature Publishing Group US
简介
Purpose
CACNA1C encodes the alpha-1-subunit of a voltage-dependent L-type calcium channel expressed in human heart and brain. Heterozygous variants in CACNA1C have previously been reported in association with Timothy syndrome and long QT syndrome. Several case reports have suggested that CACNA1C variation may also be associated with a primarily neurological phenotype.
Methods
We describe 25 individuals from 22 families with heterozygous variants in CACNA1C, who present with predominantly neurological manifestations.
Results
Fourteen individuals have de novo, nontruncating variants and present variably with developmental delays, intellectual disability, autism, hypotonia, ataxia, and epilepsy. Functional studies of a subgroup of missense variants via patch clamp experiments demonstrated differential effects on channel function in vitro, including loss of function (p.Leu1408Val), neutral …
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