Genetic Variant CD248:p.Leu702Val (chr11-66314924-G-C) – ACMG Classification: Likely_benign (-3 pts)

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2BP4BS2

The NM_020404.3(CD248):c.2104C>G(p.Leu702Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000342 in 1,461,040 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000034 ( 0 hom. )

Consequence

CD248
NM_020404.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.79

Publications

0 publications found

Variant links:

Genes affected

CD248 (HGNC:18219): (CD248 molecule) Predicted to enable extracellular matrix binding activity and extracellular matrix protein binding activity. Predicted to be involved in cell migration. Predicted to act upstream of or within several processes, including anatomical structure regression; lymph node development; and positive regulation of endothelial cell apoptotic process. Located in extracellular exosome. [provided by Alliance of Genome Resources, Apr 2022]

CD248 links:

ENSG00000254458 (HGNC:):

ENSG00000254458 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.36969584).

BS2

High AC in GnomAdExome4 at 5 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CD248	NM_020404.3 link	c.2104C>G	p.Leu702Val	missense_variant	Exon 1 of 1	ENST00000311330.4	NP_065137.1	Q9HCU0-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
CD248	ENST00000311330.4 link	c.2104C>G	p.Leu702Val	missense_variant	Exon 1 of 1	6	NM_020404.3	ENSP00000308117.3	Q9HCU0-1
ENSG00000254458	ENST00000534065.1 link	n.140+1932G>C		intron_variant	Intron 1 of 1	4
ENSG00000254756	ENST00000820635.1 link	n.134+2761G>C		intron_variant	Intron 1 of 3
ENSG00000254756	ENST00000820636.1 link	n.96+2761G>C		intron_variant	Intron 1 of 2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000342

AC:

AN:

1461040

Hom.:

Cov.:

AF XY:

0.00000413

AC XY:

AN XY:

726798

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44668

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26110

East Asian (EAS)

AF:

0.0000252

AC:

AN:

39684

South Asian (SAS)

AF:

0.00

AC:

AN:

86204

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52900

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111876

Other (OTH)

AF:

0.0000663

AC:

AN:

60352

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.485

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

Asia WGS

AF:

0.000577

AC:

AN:

3478

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jun 11, 2025

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.2104C>G (p.L702V) alteration is located in exon 1 (coding exon 1) of the CD248 gene. This alteration results from a C to G substitution at nucleotide position 2104, causing the leucine (L) at amino acid position 702 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

0.24

BayesDel_addAF

Uncertain

0.042

BayesDel_noAF

Benign

-0.18

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.11

Eigen

Benign

0.11

Eigen_PC

Benign

0.090

FATHMM_MKL

Benign

0.74

LIST_S2

Benign

0.85

M_CAP

Uncertain

0.21

MetaRNN

Benign

0.37

MetaSVM

Uncertain

0.26

MutationAssessor

Benign

1.1

PhyloP100

1.8

PrimateAI

Uncertain

0.69

PROVEAN

Benign

-0.75

REVEL

Uncertain

0.36

Sift

Uncertain

0.0020

Sift4G

Uncertain

0.034

Polyphen

0.94

Vest4

0.36

MutPred

0.36

Gain of sheet (P = 0.0266);

MVP

0.58

MPC

1.1

ClinPred

0.67

GERP RS

3.2

Varity_R

0.14

gMVP

0.41

Mutation Taster

=89/11

polymorphism

(source)

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

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11-66314924-G-C

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over