Genetic Variant ICAM4:p.Val208Met (chr19-10287763-G-A) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001544.5(ICAM4):c.622G>A(p.Val208Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000753 in 1,461,522 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/20 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V208L) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000075 ( 0 hom. )

Consequence

ICAM4
NM_001544.5 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.477

Publications

3 publications found

Variant links:

Genes affected

ICAM4 (HGNC:5347): (intercellular adhesion molecule 4 (Landsteiner-Wiener blood group)) This gene encodes the Landsteiner-Wiener (LW) blood group antigen(s) that belongs to the immunoglobulin (Ig) superfamily, and that shares similarity with the intercellular adhesion molecule (ICAM) protein family. This ICAM protein contains 2 Ig-like C2-type domains and binds to the leukocyte adhesion LFA-1 protein. The molecular basis of the LW(A)/LW(B) blood group antigens is a single aa variation at position 100; Gln-100=LW(A) and Arg-100=LW(B). Alternative splicing results in multiple transcript variants encoding distinct isoforms. [provided by RefSeq, Jul 2008]

ICAM4 links:

ICAM4-AS1 (HGNC:55990): (ICAM4 antisense RNA 1)

ICAM4-AS1 links:

LIMASI (HGNC:56357): (lncRNA inflammatory and mucous response associated, antisense to ICAM1)

LIMASI links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.10119063).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001544.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
ICAM4	NM_001544.5	MANE Select	c.622G>A	p.Val208Met	missense	Exon 2 of 3	NP_001535.1	Q14773-1
ICAM4	NM_001039132.3		c.545G>A	p.Arg182His	missense	Exon 2 of 3	NP_001034221.1	U5U6P8
ICAM4-AS1	NR_186335.1		n.1257C>T		non_coding_transcript_exon	Exon 1 of 1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
ICAM4	ENST00000380770.5	TSL:1 MANE Select	c.622G>A	p.Val208Met	missense	Exon 2 of 3	ENSP00000370147.2	Q14773-1
ICAM4	ENST00000340992.4	TSL:1	c.545G>A	p.Arg182His	missense	Exon 2 of 3	ENSP00000342114.3	Q14773-3
ICAM4	ENST00000929145.1		c.652G>A	p.Val218Met	missense	Exon 2 of 3	ENSP00000599204.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000753

AC:

AN:

1461522

Hom.:

Cov.:

AF XY:

0.00000825

AC XY:

AN XY:

727082

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53054

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00000989

AC:

AN:

1112012

Other (OTH)

AF:

0.00

AC:

AN:

60390

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.498

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000756

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.18

BayesDel_addAF

Benign

-0.25

BayesDel_noAF

Benign

-0.59

CADD

Benign

(source)

DANN

Benign

0.93

Eigen

Benign

-1.2

Eigen_PC

Benign

-1.4

FATHMM_MKL

Benign

0.11

LIST_S2

Benign

0.48

M_CAP

Benign

0.014

MetaRNN

Benign

0.10

MetaSVM

Benign

-0.92

PhyloP100

-0.48

PrimateAI

Benign

0.28

PROVEAN

Benign

-1.1

REVEL

Benign

0.036

Sift

Pathogenic

0.0

Sift4G

Pathogenic

0.0

Vest4

0.25

MutPred

0.40

Loss of MoRF binding (P = 0.0168)

MVP

0.16

MPC

1.2

ClinPred

0.91

GERP RS

-7.9

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.038

gMVP

0.26

Mutation Taster

=99/1

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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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over