Niemann-Pick C1 P1007A mouse model

— Mouse model for Niemann-Pick C1 (NPC1) disease

This mouse model was generated by CRISPR KI of the P1007A mutation into the NPC1 protein. Mice heterozygous or homozygous for this mutation do not have an apparent phenotype. However, when the heterozgous P1007A mouse is crossed with the NPC1 I1061T m…

Plasma oxysterols as biomarkers for Niemann-Pick C disease

— Background

Niemann-Pick type C is a rare, progressive neurodegenerative disease characterized by accumulation of cholesterol and other lipids in the viscera and central nervous system. For cases caused by mutations in the NPC1 or NPC2 gene, egress of lipids from endosomes or lysosomes are impaired, resulting in clinical symptoms such as abnormal eye movements, hearing loss, cerebellar ataxia, difficulty swallowing, and cognitive impairment. However, patients with Neimann-Pick disease have highly variable clinical presentation and symptom progression, making diagnosis challenging.

Technology Summary

A panel of oxygenated forms of cholesterol (oxysterols) in plasma that can be used as a diagnostic test for Neimann-Pick type C1 disease. The mass spectrometry-based panel is able to discriminate between subjects with NPC1 and normal control subjects. The oxysterol biomarkers have clinical utility in newborn screening for early diagnosis of NP1C disease, as markers for disease severity, and as biomarkers to aid in evaluation of new therapies for NPC1.

Key Advantages

High sensitivity
Rapid diagnostic for screening infants


US 8,497,122 Issued
US 9,012,216 Issued


Porter et al., 2010 – Cholesterol oxidation products are sensitive and specific blood-based biomarkers for NPC1 disease.

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