DCTN1 mutations in Perry syndrome

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Abstract
Matthew Farrer and colleagues report missense mutations in DCTN1, encoding dynactin, in eight families with Perry syndrome, a neurodegenerative disorder marked by early-onset parkinsonism, depression, severe weight loss and hypoventilation. Perry syndrome consists of early-onset parkinsonism, depression, severe weight loss and hypoventilation, with brain pathology characterized by TDP-43 immunostaining. We carried out genome-wide linkage analysis and identified five disease-segregating mutations affecting the CAP-Gly domain of dynactin (encoded by DCTN1) in eight families with Perry syndrome; these mutations diminish microtubule binding and lead to intracytoplasmic inclusions. Our findings show that DCTN1 mutations, previously associated with motor neuron disease, can underlie the selective vulnerability of other neuronal populations in distinct neurodegenerative disorders.