NCSTN

Chr 1

nicastrin

Also known as: ATAG1874

This gene encodes a type I transmembrane glycoprotein that is an integral component of the multimeric gamma-secretase complex. The encoded protein cleaves integral membrane proteins, including Notch receptors and beta-amyloid precursor protein, and may be a stabilizing cofactor required for gamma-secretase complex assembly. The cleavage of beta-amyloid precursor protein yields amyloid beta peptide, the main component of the neuritic plaque and the hallmark lesion in the brains of patients with Alzheimer's disease; however, the nature of the encoded protein's role in Alzheimer's disease is not known for certain. Mutations in this gene are associated with familial acne inversa. A pseudogene of this gene is present on chromosome 21. Alternatively spliced transcript variants of this gene have been described, but the full-length nature of some of these variants has not been determined. [provided by RefSeq, Feb 2014]

ResearchGenerating clinical summary…

Primary Disease Associations & Inheritance

UniProtAcne inversa, familial, 1

Clinical highlights

Interpreting a novel variant
This gene is strongly intolerant of loss-of-function variation in the population, so LoF variants warrant close attention. No curated mechanism annotation is available — see the mechanism card for the computational prediction and its caveats.Based on population constraint only.
0
Active trials
17
Pubs (1 yr)
P/LP submissions
P/LP missense
0.23
LOEUF· LoF intol.
LOF
Mechanism· predicted
Some data sources returned errors (1)

omim: Error: OMIM fetch failed: 429

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

LoF intolerant — likely haploinsufficient
LoF Constraint?
0.23LOEUF
pLI 0.999
Z-score 5.20
OE 0.10 (0.050.23)
Highly constrained

Highly LoF-intolerant (top ~10% of genes)

Missense Constraint?
1.43Z-score
OE missense 0.79 (0.720.87)
302 obs / 380.6 exp
Tolerant

Mild missense constraint

Observed / Expected Ratios?
LoF OE?0.10 (0.050.23)
00.351.4
Missense OE?0.79 (0.720.87)
00.61.4
Synonymous OE?1.02
01.21.6
LoF obs/exp: 4 / 39.1Missense obs/exp: 302 / 380.6Syn Z: -0.18

ClinVar Variant Classifications

0 submitted variants in ClinVar

Protein Context — Lollipop Plot

NCSTN · protein map & ClinVar variants

Showing all ClinVar variants across the protein. Search a specific variant to highlight its position.

Clinical Trials

Active and recruiting trials from ClinicalTrials.gov

No active trials found for this gene.

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