2-61498905-T-C

Variant names:

• chr2-61498905-T-C
• rs1051821670
• NM_003400.4:c.599A>G

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 0P and 5B. BP4 BS2

The NM_003400.4(XPO1):​c.599A>G​(p.Asn200Ser) variant causes a missense change. The variant allele was found at a frequency of 0.00000558 in 1,434,776 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000056 (0 hom.)
• Consequence: XPO1 NM_003400.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 6.26

Genes affected

XPO1 (HGNC:12825): (exportin 1) This cell-cycle-regulated gene encodes a protein that mediates leucine-rich nuclear export signal (NES)-dependent protein transport. The protein specifically inhibits the nuclear export of Rev and U snRNAs. It is involved in the control of several cellular processes by controlling the localization of cyclin B, MPAK, and MAPKAP kinase 2. This protein also regulates NFAT and AP-1. [provided by RefSeq, Jan 2015]

ACMG classification

Verdict is Likely_benign. Variant got -5 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.277003).
• BS2: High AC in GnomAdExome4 at 8 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
XPO1	NM_003400.4	c.599A>G	p.Asn200Ser	missense_variant	Exon 8 of 25	ENST00000401558.7	NP_003391.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
XPO1	ENST00000401558.7	c.599A>G	p.Asn200Ser	missense_variant	Exon 8 of 25	1	NM_003400.4	ENSP00000384863.2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000558 AC: 8 AN: 1434776 Hom.: 0 Cov.: 31 AF XY: 0.00000281 AC XY: 2 AN XY: 712536

Gnomad4 AFR exome AF: 0.0000626

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: 0.00000545

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

Bravo AF: 0.00000756

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Jul 31, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.599A>G (p.N200S) alteration is located in exon 8 (coding exon 7) of the XPO1 gene. This alteration results from a A to G substitution at nucleotide position 599, causing the asparagine (N) at amino acid position 200 to be replaced by a serine (S). 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	Benign	0.054
BayesDel_addAF	Benign	-0.22	T
BayesDel_noAF	Benign	-0.56
CADD	Benign	21
DANN	Benign	0.36
DEOGEN2	Benign	0.075	T;T;T
Eigen	Benign	-0.38
Eigen_PC	Benign	-0.078
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Pathogenic	0.99	.;.;D
M_CAP	Benign	0.011	T
MetaRNN	Benign	0.28	T;T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	-0.77	N;N;N
PrimateAI	Uncertain	0.74	T
PROVEAN	Benign	-0.73	N;N;N
REVEL	Benign	0.082
Sift	Benign	1.0	T;T;T
Sift4G	Benign	1.0	T;T;T
Polyphen		0.0	B;B;B
Vest4		0.68
MutPred		0.40		Gain of disorder (P = 0.0438);Gain of disorder (P = 0.0438);Gain of disorder (P = 0.0438);
MVP		0.38
MPC		1.0
ClinPred		0.49	T
GERP RS		5.5
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.52
gMVP		0.26

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.050		Details are displayed if max score is > 0.2

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

Publications

LitVar

Other links and lift over

dbSNP: rs1051821670; hg19: chr2-61726040;