rs764892330

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM1PM2PP3_Moderate

The NM_000142.5(FGFR3):​c.1993G>A​(p.Ala665Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000014 in 1,424,052 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.

Frequency

Genomes: not found (cov: 33)
Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

FGFR3
NM_000142.5 missense

Scores

9
8
2

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 7.71
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]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

PM1
In a domain Protein kinase (size 289) in uniprot entity FGFR3_HUMAN there are 14 pathogenic changes around while only 5 benign (74%) in NM_000142.5
PM2
Very rare variant in population databases, with high coverage;
PP3
MetaRNN computational evidence supports a deleterious effect, 0.879

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
FGFR3NM_000142.5 linkuse as main transcriptc.1993G>A p.Ala665Thr missense_variant 15/18 ENST00000440486.8 NP_000133.1

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
FGFR3ENST00000440486.8 linkuse as main transcriptc.1993G>A p.Ala665Thr missense_variant 15/185 NM_000142.5 ENSP00000414914 P4P22607-1

Frequencies

GnomAD3 genomes
Cov.:
33
GnomAD4 exome
AF:
0.00000140
AC:
2
AN:
1424052
Hom.:
0
Cov.:
37
AF XY:
0.00000141
AC XY:
1
AN XY:
708188
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:
0.00000183
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
Cov.:
33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
0.97
BayesDel_addAF
Pathogenic
0.19
D
BayesDel_noAF
Uncertain
0.030
CADD
Pathogenic
29
DANN
Uncertain
1.0
DEOGEN2
Pathogenic
0.87
D;.;.;.
Eigen
Uncertain
0.38
Eigen_PC
Uncertain
0.39
FATHMM_MKL
Pathogenic
0.98
D
LIST_S2
Uncertain
0.87
D;D;D;.
M_CAP
Pathogenic
0.67
D
MetaRNN
Pathogenic
0.88
D;D;D;D
MetaSVM
Uncertain
0.64
D
MutationAssessor
Benign
1.2
L;.;.;.
MutationTaster
Benign
1.0
D;D;D;D;D;D
PrimateAI
Pathogenic
0.81
D
PROVEAN
Uncertain
-3.6
D;D;D;D
REVEL
Pathogenic
0.80
Sift
Pathogenic
0.0
D;D;D;D
Sift4G
Uncertain
0.0020
D;D;D;D
Polyphen
1.0
D;D;B;B
Vest4
0.75
MutPred
0.73
Loss of stability (P = 0.1522);.;.;.;
MVP
0.94
MPC
1.8
ClinPred
0.98
D
GERP RS
3.6
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.7
Varity_R
0.71
gMVP
0.76

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr4-1808017; API