rs147307031

Variant names:

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 1P and 13B. PP2BP4_StrongBP6BS1BS2

The NM_000141.5(FGFR2):c.23T>G(p.Ile8Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000181 in 1,614,216 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00099 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000096 ( 2 hom. )

Consequence

FGFR2
NM_000141.5 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:9O:1

Conservation

PhyloP100: 2.88

Variant links:

Genes affected

FGFR2 (HGNC:3689): (fibroblast growth factor receptor 2) The protein encoded by this gene is a member of the fibroblast growth factor receptor family, where amino acid sequence is highly conserved between members and throughout evolution. FGFR family members differ from one another in their ligand affinities and tissue distribution. A full-length representative protein consists 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 is a high-affinity receptor for acidic, basic and/or keratinocyte growth factor, depending on the isoform. Mutations in this gene are associated with Crouzon syndrome, Pfeiffer syndrome, Craniosynostosis, Apert syndrome, Jackson-Weiss syndrome, Beare-Stevenson cutis gyrata syndrome, Saethre-Chotzen syndrome, and syndromic craniosynostosis. Multiple alternatively spliced transcript variants encoding different isoforms have been noted for this gene. [provided by RefSeq, Jan 2009]

FGFR2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -12 ACMG points.

PP2

Missense variant in the FGFR2 gene, where missense mutations are typically associated with disease (based on misZ statistic). The gene has 114 curated pathogenic missense variants (we use a threshold of 10). The gene has 24 curated benign missense variants. Gene score misZ: 2.402 (below the threshold of 3.09). Trascript score misZ: 4.4365 (above the threshold of 3.09). GenCC associations: The gene is linked to Pfeiffer syndrome type 3, Antley-Bixler syndrome, Pfeiffer syndrome type 2, Saethre-Chotzen syndrome, Beare-Stevenson cutis gyrata syndrome, Crouzon syndrome, Jackson-Weiss syndrome, Pfeiffer syndrome type 1, LADD syndrome 1, Pfeiffer syndrome, bent bone dysplasia syndrome 1, Antley-Bixler syndrome without genital anomalies or disordered steroidogenesis, familial scaphocephaly syndrome, McGillivray type, Apert syndrome, LADD syndrome.

BP4

Computational evidence support a benign effect (MetaRNN=0.011899501).

BP6

Variant 10-121593795-A-C is Benign according to our data. Variant chr10-121593795-A-C is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 134388.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=1, Benign=7, Uncertain_significance=1, not_provided=1}. Variant chr10-121593795-A-C is described in Lovd as [Likely_benign].

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.000991 (151/152336) while in subpopulation AFR AF= 0.00358 (149/41582). AF 95% confidence interval is 0.00311. There are 0 homozygotes in gnomad4. There are 73 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.

BS2

High Homozygotes in GnomAdExome4 at 2 Mitochondrial gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FGFR2	NM_000141.5 link	c.23T>G	p.Ile8Ser	missense_variant	Exon 2 of 18	ENST00000358487.10	NP_000132.3	P21802-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
FGFR2	ENST00000358487.10 link	c.23T>G	p.Ile8Ser	missense_variant	Exon 2 of 18	1	NM_000141.5	ENSP00000351276.6	P21802-1
FGFR2	ENST00000457416.7 link	c.23T>G	p.Ile8Ser	missense_variant	Exon 2 of 18	1		ENSP00000410294.2	P21802-3
FGFR2	ENST00000369056.5 link	c.23T>G	p.Ile8Ser	missense_variant	Exon 1 of 17	1		ENSP00000358052.1	P21802-17
FGFR2	ENST00000369058.7 link	c.23T>G	p.Ile8Ser	missense_variant	Exon 2 of 17	1		ENSP00000358054.3	A0A5S6RJB7
FGFR2	ENST00000613048.4 link	c.23T>G	p.Ile8Ser	missense_variant	Exon 2 of 17	5		ENSP00000484154.1	D2CGD1
FGFR2	ENST00000369061.8 link	c.23T>G	p.Ile8Ser	missense_variant	Exon 1 of 15	1		ENSP00000358057.4	P21802-23
FGFR2	ENST00000369059.5 link	c.23T>G	p.Ile8Ser	missense_variant	Exon 2 of 16	5		ENSP00000358055.1	E7EVR7
FGFR2	ENST00000360144.7 link	c.23T>G	p.Ile8Ser	missense_variant	Exon 2 of 17	2		ENSP00000353262.3	P21802-22
FGFR2	ENST00000604236.5 link	n.23T>G		non_coding_transcript_exon_variant	Exon 2 of 17	1		ENSP00000474109.1	S4R3B2

Frequencies

GnomAD3 genomes

AF:

0.000985

AC:

150

AN:

152218

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00357

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

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

GnomAD3 exomes

AF:

0.000199

AC:

AN:

251442

Hom.:

AF XY:

0.000147

AC XY:

AN XY:

135910

show subpopulations

Gnomad AFR exome

AF:

0.00259

Gnomad AMR exome

AF:

0.000202

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000879

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000965

AC:

141

AN:

1461880

Hom.:

Cov.:

AF XY:

0.0000784

AC XY:

AN XY:

727242

show subpopulations

Gnomad4 AFR exome

AF:

0.00358

Gnomad4 AMR exome

AF:

0.000224

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:

0.00000270

Gnomad4 OTH exome

AF:

0.000116

GnomAD4 genome

AF:

0.000991

AC:

151

AN:

152336

Hom.:

Cov.:

AF XY:

0.000980

AC XY:

AN XY:

74488

show subpopulations

Gnomad4 AFR

AF:

0.00358

Gnomad4 AMR

AF:

0.0000654

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

Alfa

AF:

0.000186

Hom.:

Bravo

AF:

0.00110

ESP6500AA

AF:

0.00272

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000231

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:9Other:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Benign:2

Feb 24, 2020

GeneDx

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant is associated with the following publications: (PMID: 25425289) -

Mar 25, 2018

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.23T>G; p.Ile8Ser variant (rs147307031) has been reported in a patient with craniosynostosis; however, this patient also harbored another pathogenic variant, and the authors classified the p.Ile8Ser variant as â€œnot pathogenicâ€ (Goos 2015). This variant was also detected in a cohort of healthy individuals (Bodian 2014), is listed in the genome Aggregation Database (gnomAD) with an African population frequency of 0.3% (identified on 63 out of 24,026 chromosomes, including one homozygote) and is classified as benign in ClinVar (variant ID: 134388). The isoleucine at position 8 is weakly conserved, considering 12 species, and computational analyses of the effects of the p.Ile8Ser variant on protein structure and function make conflicting predictions (SIFT: damaging, PolyPhen-2: benign ). Based on the available information, the p.Ile8Ser variant is likely to be benign. -

not specified

Benign:1Other:1

Sep 19, 2013

ITMI

Significance: not provided

Review Status: no classification provided

Collection Method: reference population

- -

Jul 01, 2015

Eurofins Ntd Llc (ga)

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Isolated Coronal Synostosis

Uncertain:1

Jan 13, 2018

Illumina Laboratory Services, Illumina

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -

FGFR2-related craniosynostosis

Benign:1

Dec 12, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

FGFR2-related disorder

Benign:1

Oct 16, 2019

PreventionGenetics, part of Exact Sciences

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Crouzon syndrome

Benign:1

Jan 13, 2018

Illumina Laboratory Services, Illumina

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Beare-Stevenson cutis gyrata syndrome

Benign:1

Jan 13, 2018

Illumina Laboratory Services, Illumina

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Craniosynostosis syndrome

Benign:1

Jan 13, 2018

Illumina Laboratory Services, Illumina

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Saethre-Chotzen syndrome

Benign:1

Jan 13, 2018

Illumina Laboratory Services, Illumina

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.17

BayesDel_addAF

Benign

-0.25

BayesDel_noAF

Benign

-0.14

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.63

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

Eigen

Benign

-0.21

Eigen_PC

Benign

-0.024

FATHMM_MKL

Uncertain

0.90

LIST_S2

Uncertain

0.95

D;D;D;D;T;D;T;D;D;D;D;D;D;D;D;D

M_CAP

Benign

0.047

MetaRNN

Benign

0.012

T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T

MetaSVM

Benign

-0.35

MutationAssessor

Benign

0.0

N;N;.;N;N;N;.;N;.;N;N;N;N;.;N;.

PrimateAI

Benign

0.40

PROVEAN

Benign

-1.6

N;N;.;N;N;N;N;N;N;N;N;N;N;N;N;.

REVEL

Uncertain

0.35

Sift

Uncertain

0.0010

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

Sift4G

Uncertain

0.018

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

Polyphen

0.0040, 0.023, 0.13, 0.019, 0.0090

.;B;.;B;B;.;.;.;.;.;B;B;.;.;.;.

Vest4

0.47

MVP

0.68

MPC

0.33

ClinPred

0.037

GERP RS

5.3

Varity_R

0.31

gMVP

0.54

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

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

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over