chr4-55081987-C-G

Variant names:

• chr4-55081987-C-G
• rs762771653
• NM_002253.4:c.3817G>C

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_002253.4(KDR):​c.3817G>C​(p.Glu1273Gln) 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 1,461,584 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000027 (0 hom.)
• Consequence: KDR NM_002253.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.24
• Publications: 0 publications found

Genes affected

KDR (HGNC:6307): (kinase insert domain receptor) Vascular endothelial growth factor (VEGF) is a major growth factor for endothelial cells. This gene encodes one of the two receptors of the VEGF. This receptor, known as kinase insert domain receptor, is a type III receptor tyrosine kinase. It functions as the main mediator of VEGF-induced endothelial proliferation, survival, migration, tubular morphogenesis and sprouting. The signalling and trafficking of this receptor are regulated by multiple factors, including Rab GTPase, P2Y purine nucleotide receptor, integrin alphaVbeta3, T-cell protein tyrosine phosphatase, etc.. Mutations of this gene are implicated in infantile capillary hemangiomas. [provided by RefSeq, May 2009]

KDR Gene-Disease associations (from GenCC):

• pulmonary arterial hypertension

  Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen

ENSG00000250646 (HGNC:58789):

ACMG classification

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=0.13925323).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002253.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	KDR	NM_002253.4	MANE Select	c.3817G>C	p.Glu1273Gln	missense	Exon 29 of 30	NP_002244.1	P35968-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	KDR	ENST00000263923.5	TSL:1 MANE Select	c.3817G>C	p.Glu1273Gln	missense	Exon 29 of 30	ENSP00000263923.4	P35968-1
	KDR	ENST00000922964.1		c.3475G>C	p.Glu1159Gln	missense	Exon 28 of 29	ENSP00000593023.1
	KDR	ENST00000647068.1		n.3830G>C		non_coding_transcript_exon	Exon 29 of 30

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.0000119 AC: 3 AN: 251110 AF XY: 0.0000147

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000289

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000176

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000274 AC: 4 AN: 1461584 Hom.: 0 Cov.: 31 AF XY: 0.00000275 AC XY: 2 AN XY: 727104

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

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.0000224 AC: 1 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26132

East Asian (EAS) AF: 0.00 AC: 0 AN: 39686

South Asian (SAS) AF: 0.00 AC: 0 AN: 86244

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53404

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5766

European-Non Finnish (NFE) AF: 0.00000180 AC: 2 AN: 1111762

Other (OTH) AF: 0.0000166 AC: 1 AN: 60386

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.00000192981), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome Cov.: 32

Alfa AF: 0.0000508 Hom.: 0

Bravo AF: 0.00000378

ExAC AF: 0.00000824 AC: 1

ClinVar

ClinVar submissions as Germline

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.13
BayesDel_addAF	Benign	-0.17	T
BayesDel_noAF	Benign	-0.40
CADD	Uncertain	24
DANN	Uncertain	0.99
DEOGEN2	Benign	0.18	T
Eigen	Benign	-0.13
Eigen_PC	Benign	0.056
FATHMM_MKL	Uncertain	0.95	D
LIST_S2	Benign	0.71	T
M_CAP	Benign	0.040	D
MetaRNN	Benign	0.14	T
MetaSVM	Benign	-0.66	T
MutationAssessor	Benign	1.6	L
PhyloP100		3.2
PrimateAI	Benign	0.44	T
PROVEAN	Benign	-1.1	N
REVEL	Benign	0.26
Sift	Benign	0.046	D
Sift4G	Benign	0.077	T
Polyphen		0.023	B
Vest4		0.23
MutPred		0.16		Gain of MoRF binding (P = 0.122)
MVP		0.36
MPC		0.060
ClinPred		0.43	T
GERP RS		4.9
Varity_R		0.14
gMVP		0.27
Mutation Taster		=88/12	polymorphism

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

Other links and lift over

dbSNP: rs762771653; hg19: chr4-55948154;