Annals of Indian Academy of Neurology
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Perry syndrome with a novel mutation and a rare presentation: First report from India

1 Department of Neurology, Manipal Hospital, Bengaluru, Karnataka, India
2 Department of Neurology, St Johns Medical College and Research Centre, Bengaluru, Karnataka, India

Correspondence Address:
Pramod Krishnan,
Department of Neurology, Manipal Hospital, 99 Rustum Bagh, HAL Airport Road, Bengaluru, Karnataka - 560 017
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/aian.aian_890_21

Objective: To characterize the first patient of Perry syndrome reported from India. Methods: A 62-year-old gentleman presented with acute encephalopathy, hypercapnia, central hypoventilation, and seizures. He required ventilatory support for persistent respiratory failure even after the resolution of the encephalopathy. History revealed symptoms of orthostatic hypotension, episodes of shallow breathing, unsteadiness of gait, anxiety and depression, and significant weight loss for the previous two years. His mother and elder brother had succumbed to a similar illness. Investigations for neuromuscular diseases, including myasthenia and Pompes disease, were negative. Genetic tests for muscular dystrophies and myopathies, investigations for infectious, autoimmune, and para-neoplastic diseases were negative. Neuroimaging and electrophysiological studies were unremarkable. During his hospital stay, he developed rigidity and bradykinesia. Results: In view of the prominent respiratory failure, Parkinsonism, unexplained weight loss, and family history, he was tested for Perry syndrome. A heterozygous missense variation in Exon 2 of the DCTN1 gene that results in the substitution of Proline for Alanine at codon 45 (pA45P) was detected. This variant was not detected in his clinically unaffected brother. The clinical presentation and genetic test indicate Perry syndrome, a rare autosomal dominant fatal disease, which has never been reported from India. The patient improved with Levodopa and neurorehabilitation but eventually succumbed to his illness three years later. Conclusion: Perry syndrome, though rare, should be considered in the differential diagnosis of patients with a family history of Parkinsonism and central hypoventilation.

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    -  Krishnan P
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