Rare Diseases Symptoms Automatic Extraction

Krabbe disease: clinical, biochemical and molecular information on six new patients and successful retrospective diagnosis using stored newborn screening cards.

[krabbe disease]

To present clinical, biochemical and molecular information on six new clinically diagnosed Krabbe disease patients and assess the sensitivity of retrospective galactocerebrosidase measurement in their newborn screening samples.Medical records were reviewed. Galactocerebrosidase activity was measured in leukocytes and, retrospectively, in the patients' newborn screening cards (stored for 1.4 to 13.5 years). GALC gene mutation analysis was performed.Five patients with Krabbe disease, one of whom also had hydrocephalus, became symptomatic during infancy. A sixth patient presented with seizures and developmental regression at age two and had a protracted disease course. Galactocerebrosidase activity in leukocytes ranged from 0.00 to 0.20 nmol/h/mg protein. Low galactocerebrosidase activity (range: 3.2% to 11.1% of the daily mean), consistent with Krabbe disease, was detected in each of the newborn screening samples. GALC molecular analysis identified six previously unreported mutations and two novel sequence variants.Our cases highlight the clinical variability of Krabbe disease. Galactocerebrosidase activity in newborn dried blood spots is a highly sensitive test, even when samples have been stored for many years. The high frequency of private mutations in the GALC gene may limit the use of genetic information for making treatment decisions in the newborn period.

Diseases presenting "hydrocephalus" symptom

  • achondroplasia
  • alexander disease
  • canavan disease
  • congenital toxoplasmosis
  • harlequin ichthyosis
  • hirschsprung disease
  • homocystinuria without methylmalonic aciduria
  • hydrocephalus with stenosis of the aqueduct of sylvius
  • krabbe disease
  • monosomy 21
  • proteus syndrome
  • severe combined immunodeficiency
  • sneddon syndrome
  • von hippel-lindau disease
  • wiskott-aldrich syndrome

This symptom has already been validated