Genetic Variant MICA:p.Ile236Lys (chr6-31412040-T-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_001177519.3(MICA):c.707T>A(p.Ile236Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000248 in 1,611,542 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/19 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. I236T) has been classified as Benign.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 31)

Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

MICA
NM_001177519.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.827

Publications

27 publications found

Variant links:

Genes affected

MICA (HGNC:7090): (MHC class I polypeptide-related sequence A) This gene encodes the highly polymorphic major histocompatability complex class I chain-related protein A. The protein product is expressed on the cell surface, although unlike canonical class I molecules it does not seem to associate with beta-2-microglobulin. It is a ligand for the NKG2-D type II integral membrane protein receptor. The protein functions as a stress-induced antigen that is broadly recognized by intestinal epithelial gamma delta T cells. Variations in this gene have been associated with susceptibility to psoriasis 1 and psoriatic arthritis, and the shedding of MICA-related antibodies and ligands is involved in the progression from monoclonal gammopathy of undetermined significance to multiple myeloma. Alternative splicing of this gene results in multiple transcript variants. [provided by RefSeq, Jan 2014]

MICA links:

ENSG00000288587 (HGNC:):

ENSG00000288587 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=0.06932461).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MICA	NM_001177519.3 link	c.707T>A	p.Ile236Lys	missense_variant	Exon 4 of 6	ENST00000449934.7	NP_001170990.1	Q96QC4
MICA	NM_001289152.2 link	c.416T>A	p.Ile139Lys	missense_variant	Exon 4 of 6		NP_001276081.1	Q96QC4A0A024RCL3
MICA	NM_001289153.2 link	c.416T>A	p.Ile139Lys	missense_variant	Exon 4 of 6		NP_001276082.1	Q96QC4A0A024RCL3
MICA	NM_001289154.2 link	c.293T>A	p.Ile98Lys	missense_variant	Exon 4 of 6		NP_001276083.1	Q96QC4A0A0G2JJ55

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MICA	ENST00000449934.7 link	c.707T>A	p.Ile236Lys	missense_variant	Exon 4 of 6	1	NM_001177519.3	ENSP00000413079.1		Q96QC4

Frequencies

GnomAD3 genomes

AF:

0.00000660

AC:

AN:

151532

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000243

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:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.00000906

AC:

AN:

220848

AF XY:

0.00000837

show subpopulations

Gnomad AFR exome

AF:

0.000139

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000205

AC:

AN:

1460010

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726286

show subpopulations

African (AFR)

AF:

0.0000898

AC:

AN:

33406

American (AMR)

AF:

0.00

AC:

AN:

44092

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26060

East Asian (EAS)

AF:

0.00

AC:

AN:

39644

South Asian (SAS)

AF:

0.00

AC:

AN:

86136

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53318

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5760

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111282

Other (OTH)

AF:

0.00

AC:

AN:

60312

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

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

AF:

0.00000660

AC:

AN:

151532

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74034

show subpopulations

African (AFR)

AF:

0.0000243

AC:

AN:

41140

American (AMR)

AF:

0.00

AC:

AN:

15172

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3464

East Asian (EAS)

AF:

0.00

AC:

AN:

5136

South Asian (SAS)

AF:

0.00

AC:

AN:

4814

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10572

Middle Eastern (MID)

AF:

0.00

AC:

AN:

314

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

67930

Other (OTH)

AF:

0.00

AC:

AN:

2084

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.775

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

2152

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Benign

-0.33

BayesDel_noAF

Benign

-0.53

CADD

Benign

9.8

(source)

DANN

Benign

0.82

DEOGEN2

Benign

0.0024

.;.;T

Eigen

Benign

-1.4

Eigen_PC

Benign

-1.5

FATHMM_MKL

Benign

0.0029

M_CAP

Benign

0.0017

MetaRNN

Benign

0.069

T;T;T

MetaSVM

Benign

-0.95

PhyloP100

-0.83

PrimateAI

Benign

0.34

PROVEAN

Benign

-0.23

.;N;N

REVEL

Benign

0.10

Sift

Uncertain

0.0010

.;D;D

Sift4G

Uncertain

0.033

D;D;T

Polyphen

0.17

.;B;.

Vest4

0.16

MVP

0.055

MPC

0.21

ClinPred

0.053

GERP RS

-2.4

gMVP

0.24

Mutation Taster

=96/4

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

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over