1-156591827-T-C

Position:

• chr1-156591827-T-C

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_144772.3(NAXE):​c.23T>C​(p.Leu8Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000688 in 1,453,986 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★). Synonymous variant affecting the same amino acid position (i.e. L8L) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 35)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: NAXE NM_144772.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.69

Genes affected

NAXE (HGNC:18453): (NAD(P)HX epimerase) The product of this gene interacts with apolipoprotein A-I (apoA-I), the major apolipoprotein of high-density lipoproteins (HDLs). It is secreted into some bodily fluids, and its synthesis and secretion are stimulated in vitro by incubating cells with apoA-I. The human genome contains related pseudogenes. [provided by RefSeq, Jul 2008]

ACMG classification

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
NAXE	NM_144772.3	c.23T>C	p.Leu8Pro	missense_variant	1/6	ENST00000368235.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
NAXE	ENST00000368235.8	c.23T>C	p.Leu8Pro	missense_variant	1/6	1	NM_144772.3	P1

Frequencies

GnomAD3 genomes Cov.: 35

GnomAD4 exome AF: 6.88e-7 AC: 1 AN: 1453986 Hom.: 0 Cov.: 67 AF XY: 0.00000138 AC XY: 1 AN XY: 723504

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 9.00e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 35

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Inborn genetic diseases Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jul 09, 2021

The c.23T>C (p.L8P) alteration is located in exon 1 (coding exon 1) of the NAXE gene. This alteration results from a T to C substitution at nucleotide position 23, causing the leucine (L) at amino acid position 8 to be replaced by a proline (P). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.35
BayesDel_addAF	Uncertain	0.021	T
BayesDel_noAF	Benign	-0.21
CADD	Benign	22
DANN	Benign	0.87
Eigen	Benign	0.048
Eigen_PC	Benign	-0.12
FATHMM_MKL	Uncertain	0.83	D
LIST_S2	Benign	0.68	T;T;T
M_CAP	Uncertain	0.11	D
MetaRNN	Uncertain	0.71	D;D;D
MetaSVM	Benign	-0.63	T
MutationTaster	Benign	1.0	D;D;D
PrimateAI	Uncertain	0.70	T
PROVEAN	Benign	-1.4	N;N;N
REVEL	Benign	0.24
Sift	Uncertain	0.0010	D;D;D
Sift4G	Uncertain	0.0030	D;D;D
Polyphen		1.0	D;D;D
Vest4		0.72
MutPred		0.65		Loss of helix (P = 0.0017);Loss of helix (P = 0.0017);Loss of helix (P = 0.0017);
MVP		0.54
MPC		0.50
ClinPred		0.88	D
GERP RS		3.9
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.63
gMVP		0.87

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr1-156561619;