X-linked adrenoleukodystrophy (ALD) is characterized by adrenal insufficiency and neurologic involvement with onset at variable ages. Plasma very long chain fatty acids are elevated in ALD; even in asymptomatic patients. We demonstrated previously that liquid chromatography tandem mass spectrometry measuring C26:0 lysophosphatidylcholine reliably identifies affected males. We prospectively applied this method to 4689 newborn blood spot samples; no false positives were observed. We show that high throughput neonatal screening for ALD is methodologically feasible.
Bibliographical noteFunding Information:
Supported by a grant from the NICHD ( R01HD057136 ), European Leukodystrophy Association , Kelly Foundation , Run for ALD (Kane Family) , United Leukodystrophy Foundation , and the Myelin Project . The AB Sciex API4000 triple quadrupole mass spectrometer (SN J3270205) was purchased with proceeds of NIH Grant 1S10 RR16798 awarded to Walter C. Hubbard.
- Adrenal insufficiency
- Newborn screening
- Peroxisomal disorders
- Tandem mass spectrometry