rs4647924

chr4-1801844-C-Achr4-1801844-C-Gchr4-1801844-C-T

Variant summary

Our verdict is Likely pathogenic. Variant got 8 ACMG points: 8P and 0B. PM1PM2PM5PP3_Moderate

The NM_000142.5(FGFR3):c.749C>A(p.Pro250Gln) variant causes a missense change. The variant allele was found at a frequency of 0.00000187 in 1,606,992 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. P250L) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

FGFR3
NM_000142.5 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 5.85

Variant links:

Genes affected

FGFR3 (HGNC:3690): (fibroblast growth factor receptor 3) This gene encodes a member of the fibroblast growth factor receptor (FGFR) family, with its amino acid sequence being highly conserved between members and among divergent species. FGFR family members differ from one another in their ligand affinities and tissue distribution. A full-length representative protein would consist of an extracellular region, composed of three immunoglobulin-like domains, a single hydrophobic membrane-spanning segment and a cytoplasmic tyrosine kinase domain. The extracellular portion of the protein interacts with fibroblast growth factors, setting in motion a cascade of downstream signals, ultimately influencing mitogenesis and differentiation. This particular family member binds acidic and basic fibroblast growth hormone and plays a role in bone development and maintenance. Mutations in this gene lead to craniosynostosis and multiple types of skeletal dysplasia. [provided by RefSeq, Aug 2017]

FGFR3 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_pathogenic. Variant got 8 ACMG points.

PM1

In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 1 benign, 5 uncertain in NM_000142.5

PM2

Very rare variant in population databases, with high coverage;

PM5

Other missense variant is known to change same aminoacid residue: Variant chr4-1801844-C-G is described in ClinVar as [Likely_pathogenic]. Clinvar id is 16340.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.915

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
FGFR3	NM_000142.5 linkuse as main transcript	c.749C>A	p.Pro250Gln	missense_variant	7/18	ENST00000440486.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
FGFR3	ENST00000440486.8 linkuse as main transcript	c.749C>A	p.Pro250Gln	missense_variant	7/18	5	NM_000142.5	P4	P22607-1

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152186

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

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1454806

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

722914

show subpopulations

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:

0.00000180

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152186

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74364

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.91

BayesDel_addAF

Pathogenic

0.20

BayesDel_noAF

Uncertain

0.040

CADD

Uncertain

DANN

Uncertain

0.99

DEOGEN2

Pathogenic

0.89

D;T;.;.;T;.;.

Eigen

Uncertain

0.37

Eigen_PC

Uncertain

0.23

FATHMM_MKL

Uncertain

0.95

LIST_S2

Pathogenic

0.98

D;D;D;D;D;.;D

M_CAP

Pathogenic

0.79

MetaRNN

Pathogenic

0.92

D;D;D;D;D;D;D

MetaSVM

Uncertain

0.61

MutationAssessor

Uncertain

2.0

M;.;M;M;.;M;.

MutationTaster

Benign

1.0

D;D;D;D;N;N

PrimateAI

Pathogenic

0.83

PROVEAN

Pathogenic

-6.1

D;D;D;D;.;D;D

REVEL

Pathogenic

0.73

Sift

Pathogenic

0.0

D;D;D;D;.;D;D

Sift4G

Uncertain

0.017

D;D;D;D;D;D;D

Polyphen

1.0

D;D;P;D;.;D;.

Vest4

0.69

MutPred

0.68

Loss of glycosylation at P250 (P = 0.0271);Loss of glycosylation at P250 (P = 0.0271);Loss of glycosylation at P250 (P = 0.0271);Loss of glycosylation at P250 (P = 0.0271);Loss of glycosylation at P250 (P = 0.0271);Loss of glycosylation at P250 (P = 0.0271);.;

MVP

0.97

MPC

0.75

ClinPred

1.0

GERP RS

3.1

RBP_binding_hub_radar

1.0

RBP_regulation_power_radar

2.1

Varity_R

0.91

gMVP

0.84

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.070

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

LitVar

Other links and lift over