rs121909654

Positions:

• chr5-180619680-C-T

Variant summary

Our verdict is Likely pathogenic. Variant got 7 ACMG points: 7P and 0B. PM2 PP3_Strong PP5

The NM_182925.5(FLT4):​c.2632G>A​(p.Val878Met) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (no stars).

• Frequency:
  • Genomes: not found (cov: 34)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: FLT4 NM_182925.5 missense
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 7.90

Genes affected

FLT4 (HGNC:3767): (fms related receptor tyrosine kinase 4) This gene encodes a tyrosine kinase receptor for vascular endothelial growth factors C and D. The protein is thought to be involved in lymphangiogenesis and maintenance of the lymphatic endothelium. Mutations in this gene cause hereditary lymphedema type IA. [provided by RefSeq, Jul 2008]

FLT4 (HGNC:):

ACMG classification

Verdict is Likely_pathogenic. Variant got 7 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.951
• PP5: Variant 5-180619680-C-T is Pathogenic according to our data. Variant chr5-180619680-C-T is described in ClinVar as [Pathogenic]. Clinvar id is 16265.Status of the report is no_assertion_criteria_provided, 0 stars. Variant chr5-180619680-C-T is described in Lovd as [Likely_pathogenic]. Variant chr5-180619680-C-T is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
FLT4	NM_182925.5	c.2632G>A	p.Val878Met	missense_variant	18/30	ENST00000261937.11	NP_891555.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
FLT4	ENST00000261937.11	c.2632G>A	p.Val878Met	missense_variant	18/30	1	NM_182925.5	ENSP00000261937.6

Frequencies

GnomAD3 genomes Cov.: 34

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1459966 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 726316

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 34

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

Hereditary lymphedema type I Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

Oct 01, 2006

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.96
BayesDel_addAF	Pathogenic	0.43	D
BayesDel_noAF	Pathogenic	0.38
CADD	Pathogenic	33
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.82	D;.;D
Eigen	Uncertain	0.63
Eigen_PC	Uncertain	0.52
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Pathogenic	0.99	D;D;D
M_CAP	Pathogenic	0.68	D
MetaRNN	Pathogenic	0.95	D;D;D
MetaSVM	Pathogenic	0.82	D
MutationAssessor	Uncertain	2.1	M;M;.
PrimateAI	Uncertain	0.78	T
PROVEAN	Uncertain	-2.6	D;D;D
REVEL	Pathogenic	0.87
Sift	Uncertain	0.0010	D;D;D
Sift4G	Uncertain	0.0020	D;D;D
Polyphen		1.0	D;.;D
Vest4		0.86
MutPred		0.82		Gain of disorder (P = 0.0792);Gain of disorder (P = 0.0792);Gain of disorder (P = 0.0792);
MVP		0.91
MPC		1.6
ClinPred		0.99	D
GERP RS		4.3
Varity_R		0.73
gMVP		0.91

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

Publications

LitVar

Other links and lift over

dbSNP: rs121909654; hg19: chr5-180046680;