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Journal Article
Beyond canvas: behavioral onset of rfc1-expansion disease in an Italian family-causal or casual?
Neurological Sciences 2022 August
INTRODUCTION: Biallelic intronic AAGGG repeat expansion in the replication factor C subunit 1 (RFC1) gene was recently identified in two/third of patients with cerebellar ataxia, sensory neuropathy, and bilateral vestibular areflexia syndrome (CANVAS). The phenotypic spectrum has expanded since (i.e., parkinsonism, motor neuron involvement, cognitive decline); no behavioral symptoms have been reported yet.
CASE REPORT: We report an Italian family that met the diagnostic criteria for CANVAS, and RFC1-expansion was detected in five of seven. All the affected members presented behavioral-psychiatric symptoms (anxiety, panic attacks, alcohol abuse) before the multisystemic RFC1-expansion manifestation. The disease course was progressive, with ataxia and behavioral-cognitive aspects as the most disabling symptoms.
CONCLUSION: These behavioral-cognitive observations may broaden the RFC1-expansion phenotypic spectrum and highlight the importance of investigating the whole non-motor symptoms in ataxic patients.
CASE REPORT: We report an Italian family that met the diagnostic criteria for CANVAS, and RFC1-expansion was detected in five of seven. All the affected members presented behavioral-psychiatric symptoms (anxiety, panic attacks, alcohol abuse) before the multisystemic RFC1-expansion manifestation. The disease course was progressive, with ataxia and behavioral-cognitive aspects as the most disabling symptoms.
CONCLUSION: These behavioral-cognitive observations may broaden the RFC1-expansion phenotypic spectrum and highlight the importance of investigating the whole non-motor symptoms in ataxic patients.
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