Genetic Variant NM_000420.3:c.2027G>T (chr7-142942444-C-A) – ACMG Classification: Uncertain_significance (4 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_000420.3(KEL):c.2027G>T(p.Ser676Ile) variant causes a missense change. The variant allele was found at a frequency of 0.00000564 in 1,594,654 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000055 ( 0 hom. )

Consequence

KEL
NM_000420.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 4.07

Publications

2 publications found

Variant links:

Genes affected

KEL (HGNC:6308): (Kell metallo-endopeptidase (Kell blood group)) This gene encodes a type II transmembrane glycoprotein that is the highly polymorphic Kell blood group antigen. The Kell glycoprotein links via a single disulfide bond to the XK membrane protein that carries the Kx antigen. The encoded protein contains sequence and structural similarity to members of the neprilysin (M13) family of zinc endopeptidases. [provided by RefSeq, Jul 2008]

KEL links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.889

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KEL	NM_000420.3 link	c.2027G>T	p.Ser676Ile	missense_variant	Exon 18 of 19	ENST00000355265.7	NP_000411.1	P23276A0A077QP03
KEL	XM_005249993.2 link	c.2063G>T	p.Ser688Ile	missense_variant	Exon 18 of 19		XP_005250050.1
KEL	XM_047420357.1 link	c.1916G>T	p.Ser639Ile	missense_variant	Exon 17 of 18		XP_047276313.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
KEL	ENST00000355265.7 link	c.2027G>T	p.Ser676Ile	missense_variant	Exon 18 of 19	1	NM_000420.3	ENSP00000347409.2	P23276
KEL	ENST00000470850.1 link	n.327G>T		non_coding_transcript_exon_variant	Exon 4 of 4	2
KEL	ENST00000478969.1 link	n.*15G>T		downstream_gene_variant		3

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152164

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000181

AC:

AN:

220886

AF XY:

0.00000842

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.000160

Gnomad NFE exome

AF:

0.0000103

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000555

AC:

AN:

1442490

Hom.:

Cov.:

AF XY:

0.00000559

AC XY:

AN XY:

715510

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33282

American (AMR)

AF:

0.00

AC:

AN:

42424

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25668

East Asian (EAS)

AF:

0.00

AC:

AN:

39178

South Asian (SAS)

AF:

0.00

AC:

AN:

83324

European-Finnish (FIN)

AF:

0.000154

AC:

AN:

52076

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5732

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1101258

Other (OTH)

AF:

0.00

AC:

AN:

59548

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.538

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152164

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74354

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41428

American (AMR)

AF:

0.00

AC:

AN:

15280

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5186

South Asian (SAS)

AF:

0.00

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10622

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68032

Other (OTH)

AF:

0.00

AC:

AN:

2086

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.425

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

ExAC

AF:

0.0000165

AC:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.82

BayesDel_addAF

Pathogenic

0.42

BayesDel_noAF

Pathogenic

0.36

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.76

Eigen

Pathogenic

0.79

Eigen_PC

Pathogenic

0.68

FATHMM_MKL

Uncertain

0.80

LIST_S2

Benign

0.78

M_CAP

Uncertain

0.18

MetaRNN

Pathogenic

0.89

MetaSVM

Pathogenic

0.95

MutationAssessor

Pathogenic

4.0

PhyloP100

4.1

PrimateAI

Uncertain

0.49

PROVEAN

Pathogenic

-5.0

REVEL

Pathogenic

0.86

Sift

Uncertain

0.0010

Sift4G

Pathogenic

0.0

Polyphen

1.0

Vest4

0.84

MutPred

0.71

Loss of disorder (P = 0.0121);

MVP

0.99

MPC

0.40

ClinPred

0.99

GERP RS

4.3

Varity_R

0.82

gMVP

0.62

Mutation Taster

=84/16

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

ClinVar

Computational scores

Splicing

Publications

Other links and lift over