chr6-43551372-C-A

Position:

• chr6-43551372-C-A

Variant summary

Our verdict is Uncertain significance. Variant got 5 ACMG points: 5P and 0B. PM2 PM5 PP3

The NM_020750.3(XPO5):​c.1654G>T​(p.Val552Phe) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V552I) has been classified as Pathogenic.

• Frequency: Genomes: not found (cov: 32)
• Consequence: XPO5 NM_020750.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 5.48

Genes affected

XPO5 (HGNC:17675): (exportin 5) This gene encodes a member of the karyopherin family that is required for the transport of small RNAs and double-stranded RNA-binding proteins from the nucleus to the cytoplasm. The encoded protein translocates cargo through the nuclear pore complex in a RanGTP-dependent process. [provided by RefSeq, Aug 2011]

POLR1C (HGNC:20194): (RNA polymerase I and III subunit C) The protein encoded by this gene is a subunit of both RNA polymerase I and RNA polymerase III complexes. The encoded protein is part of the Pol core element. Mutations in this gene have been associated with Treacher Collins syndrome (TCS) and hypomyelinating leukodystrophy 11. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jan 2016]

ACMG classification

Verdict is Uncertain_significance. Variant got 5 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr6-43551372-C-T is described in Lovd as [Pathogenic].
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.77

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
XPO5	NM_020750.3	c.1654G>T	p.Val552Phe	missense_variant	15/32	ENST00000265351.12	NP_065801.1
POLR1C	NM_001318876.2	c.945+22101C>A		intron_variant			NP_001305805.1
POLR1C	NM_001363658.2	c.*42+361C>A		intron_variant			NP_001350587.1
XPO5	NR_144392.2	n.1828G>T		non_coding_transcript_exon_variant	15/33

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
XPO5	ENST00000265351.12	c.1654G>T	p.Val552Phe	missense_variant	15/32	1	NM_020750.3	ENSP00000265351	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.45
BayesDel_addAF	Pathogenic	0.31	D
BayesDel_noAF	Pathogenic	0.20
CADD	Pathogenic	26
DANN	Uncertain	0.99
DEOGEN2	Benign	0.14	T
Eigen	Uncertain	0.46
Eigen_PC	Uncertain	0.44
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.94	D
M_CAP	Uncertain	0.11	D
MetaRNN	Pathogenic	0.77	D
MetaSVM	Benign	-0.31	T
MutationAssessor	Uncertain	2.5	M
MutationTaster	Benign	1.0	D
PrimateAI	Uncertain	0.76	T
PROVEAN	Benign	-2.1	N
REVEL	Uncertain	0.48
Sift	Uncertain	0.021	D
Sift4G	Uncertain	0.015	D
Polyphen		1.0	D
Vest4		0.92
MutPred		0.45		Loss of stability (P = 0.1164);
MVP		0.50
MPC		1.4
ClinPred		0.96	D
GERP RS		4.7
Varity_R		0.64
gMVP		0.72

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.030		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: rs11544379; hg19: chr6-43519109;