chr5-72855848-G-A

Position:

• chr5-72855848-G-A

Variant summary

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

The NM_002270.4(TNPO1):​c.280G>A​(p.Gly94Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: TNPO1 NM_002270.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 9.50

Genes affected

TNPO1 (HGNC:6401): (transportin 1) This gene encodes the beta subunit of the karyopherin receptor complex which interacts with nuclear localization signals to target nuclear proteins to the nucleus. The karyopherin receptor complex is a heterodimer of an alpha subunit which recognizes the nuclear localization signal and a beta subunit which docks the complex at nucleoporins. Alternate splicing of this gene results in several transcript variants encoding different proteins. [provided by RefSeq, Jun 2018]

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	Protein	UniProt
TNPO1	NM_002270.4	c.280G>A	p.Gly94Ser	missense_variant	4/25	ENST00000337273.10	NP_002261.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
TNPO1	ENST00000337273.10	c.280G>A	p.Gly94Ser	missense_variant	4/25	1	NM_002270.4	ENSP00000336712.5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

May 29, 2024

The c.280G>A (p.G94S) alteration is located in exon 4 (coding exon 4) of the TNPO1 gene. This alteration results from a G to A substitution at nucleotide position 280, causing the glycine (G) at amino acid position 94 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	0.10
BayesDel_addAF	Uncertain	0.11	D
BayesDel_noAF	Uncertain	-0.080
CADD	Uncertain	24
DANN	Benign	0.97
DEOGEN2	Benign	0.092	T;.
Eigen	Benign	-0.064
Eigen_PC	Benign	0.17
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.91	D;D
M_CAP	Benign	0.032	D
MetaRNN	Uncertain	0.46	T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	-0.40	N;.
PrimateAI	Pathogenic	0.88	D
PROVEAN	Benign	-0.18	N;N
REVEL	Benign	0.27
Sift	Benign	0.61	T;T
Sift4G	Benign	0.71	T;T
Polyphen		0.0	B;.
Vest4		0.79
MutPred		0.42		Gain of helix (P = 0.2059);.;
MVP		0.73
MPC		1.0
ClinPred		0.91	D
GERP RS		4.9
Varity_R		0.42
gMVP		0.45

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: chr5-72151675; COSMIC: COSV61523656;