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Long term effects of enzyme replacement therapy in an Italian cohort of type 3 Gaucher patients

Sechi, Annalisa and Deroma, Laura and Dardis, Andrea and Ciana, Giovanni and Bertin, Nicole and Concolino, Daniela and Linari, Silvia and Perria, Chiara and Bembi, Bruno (2014) Long term effects of enzyme replacement therapy in an Italian cohort of type 3 Gaucher patients. Molecular Genetics and Metabolism, Vol. 113 (3), p. 213-218. ISSN 1096-7192. Article.

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DOI: 10.1016/j.ymgme.2014.07.022

Abstract

Background: The chronic neuropathic form of Gaucher disease (GD3) is characterised by hepatosplenomegaly, anaemia, thrombocytopenia, bone alterations and central neurological involvement. Enzyme replacement therapy (ERT) has been demonstrated to be effective in non neuropathic Gaucher disease, but long term results in patients with GD3 are still limited and contrasting. A possible role of genotype in determining the response to ERT has been hypothesised.
Patients and methods: All patients affected by GD3, treated with ERT, and followed-up in 4 different Italian centres (Udine, Catanzaro, Sassari and Florence) were included. Data on clinical conditions, laboratory values, neurological and neuropsychological examinations, radiological and electrophysiological features were collected retrospectively from clinical records.
Results: Ten patients (6 females, 4 males) with four different genotypes (L444P/L444P, L444P/F231I, P159T/unknown, C.115+1G>A/N188S) were identified. They received ERT infusions from 3 to 21 years. Haematological parameters and organomegaly improved/normalised in all patients. Three patients showed severe progressive skeletal deformities. 6/10 patients were neurologically asymptomatic when they started ERT for systemic symptoms. During the follow-up, 2/6 developed an important central nervous system disease; 2/6 developed mild central symptoms; and 2/6 did not show any neurological symptom after 5, and 20 years of treatment respectively, despite the presence of epileptiform abnormalities at the electroencephalogram. Overall, neurological involvement worsened over time in 6/10 patients, 3 of whom developed progressive myoclonic encephalopathy and died.
Conclusions: ERT improved the systemic manifestations in patients with GD3, but was not able to counteract the progression of neurological symptoms in the long term.

Item Type:Article
ID Code:10031
Status:Published
Refereed:Yes
Uncontrolled Keywords:Neuronopathic Gaucher disease, enzyme replacement therapy, long term follow-up
Subjects:Area 06 - Scienze mediche > MED/39 Neuropsichiatria infantile
Divisions:001 Università di Sassari > 01-a Nuovi Dipartimenti dal 2012 > Medicina Clinica e Sperimentale
Publisher:Elsevier
ISSN:1096-7192
Deposited On:15 Sep 2014 08:48

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