7-142941310-T-C

Variant names:

• chr7-142941310-T-C
• rs370926722
• NM_000420.3:c.2141A>G

Variant summary

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

The NM_000420.3(KEL):​c.2141A>G​(p.Tyr714Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,862 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. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. Y714F) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: KEL NM_000420.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.90
• Publications: 0 publications found

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]

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, 0.749

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KEL	NM_000420.3	c.2141A>G	p.Tyr714Cys	missense_variant	Exon 19 of 19	ENST00000355265.7	NP_000411.1
KEL	XM_005249993.2	c.2177A>G	p.Tyr726Cys	missense_variant	Exon 19 of 19		XP_005250050.1
KEL	XM_047420357.1	c.2030A>G	p.Tyr677Cys	missense_variant	Exon 18 of 18		XP_047276313.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KEL	ENST00000355265.7	c.2141A>G	p.Tyr714Cys	missense_variant	Exon 19 of 19	1	NM_000420.3	ENSP00000347409.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461862 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 727226

African (AFR) AF: 0.00 AC: 0 AN: 33478

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86256

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53408

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5764

European-Non Finnish (NFE) AF: 8.99e-7 AC: 1 AN: 1112002

Other (OTH) AF: 0.00 AC: 0 AN: 60394

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.16
BayesDel_addAF	Uncertain	0.033	T
BayesDel_noAF	Benign	-0.19
CADD	Benign	21
DANN	Uncertain	0.98
DEOGEN2	Uncertain	0.62	D
Eigen	Benign	-0.33
Eigen_PC	Benign	-0.45
FATHMM_MKL	Benign	0.14	N
LIST_S2	Benign	0.79	T
M_CAP	Uncertain	0.19	D
MetaRNN	Pathogenic	0.75	D
MetaSVM	Benign	-0.62	T
MutationAssessor	Benign	1.4	L
PhyloP100		2.9
PrimateAI	Benign	0.34	T
PROVEAN	Uncertain	-3.9	D
REVEL	Uncertain	0.34
Sift	Pathogenic	0.0	D
Sift4G	Uncertain	0.0090	D
Polyphen		0.92	P
Vest4		0.32
MutPred		0.69		Gain of disorder (P = 0.0064);
MVP		0.79
MPC		0.33
ClinPred		0.87	D
GERP RS		3.6
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.0
Varity_R		0.19
gMVP		0.34
Mutation Taster		=89/11	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs370926722; hg19: chr7-142638397;