Spectrum of Lysosomal storage disorders at a medical genetics center in northern India.

Abstract:

BACKGROUND:There is limited literature available on the phenotypic and mutation spectrum of Indian patients with Lysosomal storage disorders (LSD). OBJECTIVE:To elucidate the clinical, biochemical and mutation spectrum and to study the management options in Indian patients with lysosomal storage disorders. DESIGN:Descriptive study. SUBJECTS AND METHODS:All patients with lysosomal storage disorders diagnosed in the Medical Genetics department of a tertiary care institute in North India over a three year period from January 2008 to December 2010. RESULTS:Out of the total of 93 patients clinically suspected to have LSDs, 68 (mean age at presentation 4.5 years) were confirmed to have LSDs based on the laboratory/neuroimaging findings and documentation of deficient enzymatic activity in the peripheral blood (leucocytes or plasma) and/or skin fibroblasts. The commonest clinical features at presentation were growth retardation (failure to thrive 47.2% and short stature 17.6%), hepatosplenomegaly (41.2%) and neuroregression (33.8%). A history of consanguinity was present in 32.4% of the families. Prenatal diagnosis was done in a total of 6 affected families; two pregnancies were found to be affected (one each with Gaucher disease and Tay Sachs disease) and in both cases the parents opted for termination of pregnancy. Of the remaining four pregnancies which were found to be unaffected and therefore continued, three were confirmed to be normal on post-natal follow up. Enzyme replacement therapy (ERT) is being given for a total of 8 LSD patients and all of them are showing a gradual amelioration of their symptoms and an improvement in the quality of life. CONCLUSIONS:Lysosomal storage disorders constitute an important group of genetic metabolic disorders for many of which therapeutic options are now available.

journal_name

Indian Pediatr

journal_title

Indian pediatrics

authors

Verma PK,Ranganath P,Dalal AB,Phadke SR

doi

10.1007/s13312-012-0192-4

subject

Has Abstract

pub_date

2012-10-01 00:00:00

pages

799-804

issue

10

eissn

0019-6061

issn

0974-7559

pii

S097475591100585-1

journal_volume

49

pub_type

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