chr10-11952192-T-C

Position:

• chr10-11952192-T-C

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4_Moderate BS2

The NM_015542.4(UPF2):​c.2908A>G​(p.Ile970Val) variant causes a missense change. The variant allele was found at a frequency of 0.00000496 in 1,613,576 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: 𝑓 0.000020 (0 hom., cov: 32)
  • Exomes 𝑓: 0.0000034 (0 hom.)
• Consequence: UPF2 NM_015542.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.79

Genes affected

UPF2 (HGNC:17854): (UPF2 regulator of nonsense mediated mRNA decay) This gene encodes a protein that is part of a post-splicing multiprotein complex involved in both mRNA nuclear export and mRNA surveillance. mRNA surveillance detects exported mRNAs with truncated open reading frames and initiates nonsense-mediated mRNA decay (NMD). When translation ends upstream from the last exon-exon junction, this triggers NMD to degrade mRNAs containing premature stop codons. This protein is located in the perinuclear area. It interacts with translation release factors and the proteins that are functional homologs of yeast Upf1p and Upf3p. Two splice variants have been found for this gene; both variants encode the same protein. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Likely_benign. Variant got -6 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.19080135).
• BS2: High AC in GnomAdExome4 at 5 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
UPF2	NM_015542.4	c.2908A>G	p.Ile970Val	missense_variant	15/22	ENST00000357604.10
UPF2	NM_080599.3	c.2908A>G	p.Ile970Val	missense_variant	15/22
UPF2	XM_047424986.1	c.2908A>G	p.Ile970Val	missense_variant	15/21

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
UPF2	ENST00000357604.10	c.2908A>G	p.Ile970Val	missense_variant	15/22	1	NM_015542.4	P1
UPF2	ENST00000356352.6	c.2908A>G	p.Ile970Val	missense_variant	14/21	1		P1
UPF2	ENST00000397053.6	c.2908A>G	p.Ile970Val	missense_variant	15/22	5		P1

Frequencies

GnomAD3 genomes AF: 0.0000197 AC: 3 AN: 152218 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000241

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.0000942

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000147

Gnomad OTH AF: 0.00

GnomAD3 exomes AF: 0.00000797 AC: 2 AN: 250942 Hom.: 0 AF XY: 0.00000737 AC XY: 1 AN XY: 135648

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000176

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000342 AC: 5 AN: 1461358 Hom.: 0 Cov.: 31 AF XY: 0.00000550 AC XY: 4 AN XY: 726958

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: 0.0000116

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000360

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome AF: 0.0000197 AC: 3 AN: 152218 Hom.: 0 Cov.: 32 AF XY: 0.0000269 AC XY: 2 AN XY: 74370

Gnomad4 AFR AF: 0.0000241

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.0000942

Gnomad4 NFE AF: 0.0000147

Gnomad4 OTH AF: 0.00

ExAC AF: 0.00000824 AC: 1

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

Sep 29, 2023

The c.2908A>G (p.I970V) alteration is located in exon 15 (coding exon 14) of the UPF2 gene. This alteration results from a A to G substitution at nucleotide position 2908, causing the isoleucine (I) at amino acid position 970 to be replaced by a valine (V). 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	0.089
BayesDel_addAF	Benign	-0.21	T
BayesDel_noAF	Benign	-0.52
CADD	Benign	18
DANN	Benign	0.96
DEOGEN2	Benign	0.048	T;T;T
Eigen	Benign	-0.37
Eigen_PC	Benign	-0.16
FATHMM_MKL	Uncertain	0.95	D
LIST_S2	Uncertain	0.96	.;.;D
M_CAP	Benign	0.0098	T
MetaRNN	Benign	0.19	T;T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.85	L;L;L
MutationTaster	Benign	1.0	D;D;D;D
PrimateAI	Uncertain	0.71	T
PROVEAN	Benign	-0.14	N;N;N
REVEL	Benign	0.051
Sift	Benign	0.43	T;T;T
Sift4G	Benign	0.83	T;T;T
Polyphen		0.015	B;B;B
Vest4		0.30
MutPred		0.52		Gain of sheet (P = 0.039);Gain of sheet (P = 0.039);Gain of sheet (P = 0.039);
MVP		0.38
MPC		0.53
ClinPred		0.23	T
GERP RS		3.1
Varity_R		0.051
gMVP		0.24

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

LitVar

Other links and lift over

dbSNP: rs763632387; hg19: chr10-11994191;