chr19-50361718-G-A
Variant summary
Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2
The NM_004851.3(NAPSA):c.413C>T(p.Ala138Val) variant causes a missense change. The variant allele was found at a frequency of 0.00000342 in 1,461,870 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).
Frequency
Genomes: not found (cov: 31)
Exomes 𝑓: 0.0000034 ( 0 hom. )
Consequence
NAPSA
NM_004851.3 missense
NM_004851.3 missense
Scores
1
8
10
Clinical Significance
Conservation
PhyloP100: 5.27
Genes affected
NAPSA (HGNC:13395): (napsin A aspartic peptidase) This gene encodes a member of the peptidase A1 family of aspartic proteases. The encoded preproprotein is proteolytically processed to generate an activation peptide and the mature protease. The activation peptides of aspartic proteinases function as inhibitors of the protease active site. These peptide segments, or pro-parts, are deemed important for correct folding, targeting, and control of the activation of aspartic proteinase zymogens. The encoded protease may play a role in the proteolytic processing of pulmonary surfactant protein B in the lung and may function in protein catabolism in the renal proximal tubules. This gene has been described as a marker for lung adenocarcinoma and renal cell carcinoma. [provided by RefSeq, Feb 2016]
NR1H2 (HGNC:7965): (nuclear receptor subfamily 1 group H member 2) The liver X receptors, LXRA (NR1H3; MIM 602423) and LXRB, form a subfamily of the nuclear receptor superfamily and are key regulators of macrophage function, controlling transcriptional programs involved in lipid homeostasis and inflammation. The inducible LXRA is highly expressed in liver, adrenal gland, intestine, adipose tissue, macrophages, lung, and kidney, whereas LXRB is ubiquitously expressed. Ligand-activated LXRs form obligate heterodimers with retinoid X receptors (RXRs; see MIM 180245) and regulate expression of target genes containing LXR response elements (summary by Korf et al., 2009 [PubMed 19436111]).[supplied by OMIM, Jan 2010]
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ACMG classification
Classification made for transcript
Verdict is Uncertain_significance. Variant got 2 ACMG points.
PM2
?
Very rare variant in population databases, with high coverage;
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
NAPSA | NM_004851.3 | c.413C>T | p.Ala138Val | missense_variant | 4/9 | ENST00000253719.7 | |
LOC105372437 | XR_007067299.1 | n.367+9112G>A | intron_variant, non_coding_transcript_variant | ||||
NAPSA | XM_017027512.2 | c.386C>T | p.Ala129Val | missense_variant | 4/9 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
NAPSA | ENST00000253719.7 | c.413C>T | p.Ala138Val | missense_variant | 4/9 | 1 | NM_004851.3 | P1 |
Frequencies
GnomAD3 genomes ? Cov.: 31
GnomAD3 genomes
?
Cov.:
31
GnomAD4 exome AF: 0.00000342 AC: 5AN: 1461870Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1AN XY: 727232
GnomAD4 exome
AF:
AC:
5
AN:
1461870
Hom.:
Cov.:
31
AF XY:
AC XY:
1
AN XY:
727232
Gnomad4 AFR exome
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GnomAD4 genome ? Cov.: 31
GnomAD4 genome
?
Cov.:
31
ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
not specified Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Ambry Genetics | Aug 20, 2023 | The c.413C>T (p.A138V) alteration is located in exon 4 (coding exon 4) of the NAPSA gene. This alteration results from a C to T substitution at nucleotide position 413, causing the alanine (A) at amino acid position 138 to be replaced by a valine (V). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
BayesDel_addAF
Benign
T
BayesDel_noAF
Benign
Cadd
Uncertain
Dann
Pathogenic
DEOGEN2
Benign
T;T
Eigen
Uncertain
Eigen_PC
Uncertain
FATHMM_MKL
Uncertain
D
LIST_S2
Uncertain
D;D
M_CAP
Benign
D
MetaRNN
Uncertain
D;D
MetaSVM
Benign
T
MutationAssessor
Benign
L;.
MutationTaster
Benign
D;D
PrimateAI
Benign
T
PROVEAN
Uncertain
D;.
REVEL
Benign
Sift
Uncertain
D;.
Sift4G
Uncertain
D;.
Polyphen
P;.
Vest4
MutPred
Loss of disorder (P = 0.0726);.;
MVP
MPC
ClinPred
D
GERP RS
Varity_R
gMVP
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at