chr9-137435275-T-C

Variant names:

• chr9-137435275-T-C
• rs771117470
• NM_001033113.2:c.1225A>G

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001033113.2(ENTPD8):​c.1225A>G​(p.Ile409Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 34)
• Consequence: ENTPD8 NM_001033113.2 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.791

Genes affected

ENTPD8 (HGNC:24860): (ectonucleoside triphosphate diphosphohydrolase 8) Predicted to enable guanosine-diphosphatase activity and uridine-diphosphatase activity. Predicted to be involved in nucleoside diphosphate catabolic process. Predicted to act upstream of or within nucleoside diphosphate biosynthetic process and nucleoside monophosphate biosynthetic process. Predicted to be integral component of membrane. Predicted to be active in plasma membrane. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.19136348).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ENTPD8	NM_001033113.2	c.1225A>G	p.Ile409Val	missense_variant	Exon 9 of 10	ENST00000371506.7	NP_001028285.1
ENTPD8	NM_198585.3	c.1114A>G	p.Ile372Val	missense_variant	Exon 8 of 9		NP_940987.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ENTPD8	ENST00000371506.7	c.1225A>G	p.Ile409Val	missense_variant	Exon 9 of 10	5	NM_001033113.2	ENSP00000360561.2
ENTPD8	ENST00000344119.6	c.1114A>G	p.Ile372Val	missense_variant	Exon 8 of 9	1		ENSP00000344089.2
ENTPD8	ENST00000461823.1	n.2023A>G		non_coding_transcript_exon_variant	Exon 7 of 8	2

Frequencies

GnomAD3 genomes Cov.: 34

GnomAD4 exome Cov.: 34

GnomAD4 genome Cov.: 34

ExAC AF: 0.00000825 AC: 1

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.19
BayesDel_addAF	Benign	-0.27	T
BayesDel_noAF	Benign	-0.62
CADD	Benign	18
DANN	Uncertain	0.99
DEOGEN2	Benign	0.043	.;T;T
Eigen	Benign	-0.41
Eigen_PC	Benign	-0.43
FATHMM_MKL	Benign	0.33	N
LIST_S2	Benign	0.72	T;T;.
M_CAP	Benign	0.0050	T
MetaRNN	Benign	0.19	T;T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.8	.;L;L
PrimateAI	Uncertain	0.51	T
PROVEAN	Benign	-0.25	N;N;N
REVEL	Benign	0.049
Sift	Benign	0.070	T;T;T
Sift4G	Benign	0.56	T;T;T
Polyphen		0.64	P;P;P
Vest4		0.20
MutPred		0.70		.;Gain of glycosylation at S405 (P = 0.3364);Gain of glycosylation at S405 (P = 0.3364);
MVP		0.040
MPC		0.072
ClinPred		0.50	T
GERP RS		0.57
Varity_R		0.11
gMVP		0.41

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: rs771117470; hg19: chr9-140329727;