12-71138223-A-G

Variant names:

• chr12-71138223-A-G
• rs952846313
• NM_004616.3:c.269T>C

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2 PP3

The NM_004616.3(TSPAN8):​c.269T>C​(p.Ile90Thr) variant causes a missense change. The variant allele was found at a frequency of 0.00000616 in 1,461,120 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000062 (0 hom.)
• Consequence: TSPAN8 NM_004616.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.21
• Publications: 0 publications found

Genes affected

TSPAN8 (HGNC:11855): (tetraspanin 8) The protein encoded by this gene is a member of the transmembrane 4 superfamily, also known as the tetraspanin family. Most of these members are cell-surface proteins that are characterized by the presence of four hydrophobic domains. The proteins mediate signal transduction events that play a role in the regulation of cell development, activation, growth and motility. This encoded protein is a cell surface glycoprotein that is known to complex with integrins. This gene is expressed in different carcinomas. The use of alternate polyadenylation sites has been found for this gene. [provided by RefSeq, Jul 2008]

ACMG classification

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.812

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_004616.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TSPAN8	NM_004616.3	MANE Select	c.269T>C	p.Ile90Thr	missense	Exon 5 of 9	NP_004607.1	P19075
	TSPAN8	NM_001369760.1		c.269T>C	p.Ile90Thr	missense	Exon 4 of 8	NP_001356689.1	P19075

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TSPAN8	ENST00000247829.8	TSL:1 MANE Select	c.269T>C	p.Ile90Thr	missense	Exon 5 of 9	ENSP00000247829.3	P19075
	TSPAN8	ENST00000393330.6	TSL:1	c.269T>C	p.Ile90Thr	missense	Exon 8 of 12	ENSP00000377003.2	P19075
	TSPAN8	ENST00000546561.2	TSL:1	c.269T>C	p.Ile90Thr	missense	Exon 4 of 8	ENSP00000447160.1	P19075

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000616 AC: 9 AN: 1461120 Hom.: 0 Cov.: 33 AF XY: 0.00000688 AC XY: 5 AN XY: 726930

African (AFR) AF: 0.00 AC: 0 AN: 33412

American (AMR) AF: 0.00 AC: 0 AN: 44494

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26060

East Asian (EAS) AF: 0.00 AC: 0 AN: 39686

South Asian (SAS) AF: 0.00 AC: 0 AN: 86224

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53356

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5750

European-Non Finnish (NFE) AF: 0.00000720 AC: 8 AN: 1111788

Other (OTH) AF: 0.0000166 AC: 1 AN: 60350

GnomAD4 genome Cov.: 33

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.091
BayesDel_addAF	Uncertain	0.11	D
BayesDel_noAF	Benign	-0.090
CADD	Uncertain	24
DANN	Benign	0.97
DEOGEN2	Benign	0.17	T
Eigen	Uncertain	0.43
Eigen_PC	Uncertain	0.37
FATHMM_MKL	Uncertain	0.87	D
LIST_S2	Benign	0.83	T
M_CAP	Uncertain	0.11	D
MetaRNN	Pathogenic	0.81	D
MetaSVM	Uncertain	0.11	D
MutationAssessor	Uncertain	2.2	M
PhyloP100		4.2
PrimateAI	Benign	0.42	T
PROVEAN	Uncertain	-2.9	D
REVEL	Uncertain	0.63
Sift	Uncertain	0.0050	D
Sift4G	Uncertain	0.014	D
Polyphen		1.0	D
Vest4		0.64
MutPred		0.70		Loss of stability (P = 0.0012)
MVP		0.63
MPC		0.52
ClinPred		0.95	D
GERP RS		4.2
Varity_R		0.58
gMVP		0.49
Mutation Taster		=62/38	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.060		Details are displayed if max score is > 0.2

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

Other links and lift over

dbSNP: rs952846313; hg19: chr12-71532003;