dbSNP rs2756923: KIR2DL1:p.Thr333Pro (chr19-54783763-A-C) – 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_014218.3(KIR2DL1):c.997A>C(p.Thr333Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000274 in 1,461,774 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. T333A) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000027 ( 0 hom. )

Consequence

KIR2DL1
NM_014218.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.983

Publications

10 publications found

Variant links:

Genes affected

KIR2DL1 (HGNC:6329): (killer cell immunoglobulin like receptor, two Ig domains and long cytoplasmic tail 1) Killer cell immunoglobulin-like receptors (KIRs) are transmembrane glycoproteins expressed by natural killer cells and subsets of T cells. The KIR genes are polymorphic and highly homologous and they are found in a cluster on chromosome 19q13.4 within the 1 Mb leukocyte receptor complex (LRC). The gene content of the KIR gene cluster varies among haplotypes, although several "framework" genes are found in all haplotypes (KIR3DL3, KIR3DP1, KIR3DL4, KIR3DL2). The KIR proteins are classified by the number of extracellular immunoglobulin domains (2D or 3D) and by whether they have a long (L) or short (S) cytoplasmic domain. KIR proteins with the long cytoplasmic domain transduce inhibitory signals upon ligand binding via an immune tyrosine-based inhibitory motif (ITIM), while KIR proteins with the short cytoplasmic domain lack the ITIM motif and instead associate with the TYRO protein tyrosine kinase binding protein to transduce activating signals. The ligands for several KIR proteins are subsets of HLA class I molecules; thus, KIR proteins are thought to play an important role in regulation of the immune response. [provided by RefSeq, Jul 2008]

KIR2DL1 links:

ENSG00000215765 (HGNC:):

ENSG00000215765 links:

Genome browser will be placed here

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=0.116919905).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KIR2DL1	NM_014218.3 link	c.997A>C	p.Thr333Pro	missense_variant	Exon 8 of 8	ENST00000336077.11	NP_055033.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein
KIR2DL1	ENST00000336077.11 link	c.997A>C	p.Thr333Pro	missense_variant	Exon 8 of 8	1	NM_014218.3	ENSP00000336769.5
KIR2DL1	ENST00000291633.7 link	c.1075A>C	p.Thr359Pro	missense_variant	Exon 9 of 9	1		ENSP00000291633.7
ENSG00000215765	ENST00000400864.3 link	n.72-2700A>C		intron_variant	Intron 2 of 5	5

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000274

AC:

AN:

1461774

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

727182

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

33476

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:

86254

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53380

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00000360

AC:

AN:

1111946

Other (OTH)

AF:

0.00

AC:

AN:

60390

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.00383038), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.400

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.096

BayesDel_addAF

Benign

-0.19

BayesDel_noAF

Benign

-0.51

CADD

Benign

(source)

DANN

Benign

0.83

DEOGEN2

Benign

0.031

T;.

Eigen

Benign

-0.75

Eigen_PC

Benign

-1.0

FATHMM_MKL

Benign

0.0061

M_CAP

Benign

0.00042

MetaRNN

Benign

0.12

T;T

MetaSVM

Benign

-0.95

PhyloP100

-0.98

PrimateAI

Benign

0.39

PROVEAN

Benign

-1.6

N;N

REVEL

Benign

0.072

Sift

Pathogenic

0.0

D;D

Sift4G

Benign

0.094

T;T

Polyphen

0.90

P;.

Vest4

0.13

MutPred

0.27

.;Gain of disorder (P = 0.0512);

MVP

0.36

MPC

2.6

ClinPred

0.22

GERP RS

-1.8

gMVP

0.041

Mutation Taster

=100/0

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

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