Genetic Variant NM_000141.5:c.1849T>C (chr10-121496546-A-G) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_000141.5(FGFR2):c.1849T>C(p.Leu617Leu) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,870 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: not found (cov: 31)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

FGFR2
NM_000141.5 synonymous

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.425

Publications

0 publications found

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 Gene-Disease associations (from GenCC):

Apert syndrome
Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, ClinGen, PanelApp Australia, G2P, Genomics England PanelApp
Beare-Stevenson cutis gyrata syndrome
Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, ClinGen, G2P, Genomics England PanelApp
Crouzon syndrome
Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Ambry Genetics, ClinGen, PanelApp Australia, Genomics England PanelApp, G2P
Jackson-Weiss syndrome
Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Genomics England PanelApp, G2P
LADD syndrome 1
Inheritance: AD Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), G2P, Ambry Genetics
Pfeiffer syndrome
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: ClinGen, PanelApp Australia, Labcorp Genetics (formerly Invitae), Ambry Genetics, Genomics England PanelApp, G2P
Antley-Bixler syndrome without genital anomalies or disordered steroidogenesis
Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp, G2P
bent bone dysplasia syndrome 1
Inheritance: AD Classification: STRONG, MODERATE, SUPPORTIVE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), Orphanet
familial scaphocephaly syndrome, McGillivray type
Inheritance: AD Classification: STRONG, SUPPORTIVE Submitted by: Orphanet, Genomics England PanelApp
Saethre-Chotzen syndrome
Inheritance: AD Classification: STRONG Submitted by: PanelApp Australia, Genomics England PanelApp
Antley-Bixler syndrome
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
LADD syndrome
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
Pfeiffer syndrome type 1
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
Pfeiffer syndrome type 2
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
Pfeiffer syndrome type 3
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

FGFR2 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.55).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FGFR2	NM_000141.5 link	c.1849T>C	p.Leu617Leu	synonymous_variant	Exon 13 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.1849T>C	p.Leu617Leu	synonymous_variant	Exon 13 of 18	1	NM_000141.5	ENSP00000351276.6	P21802-1
FGFR2	ENST00000457416.7 link	c.1852T>C	p.Leu618Leu	synonymous_variant	Exon 13 of 18	1		ENSP00000410294.2	P21802-3
FGFR2	ENST00000369056.5 link	c.1852T>C	p.Leu618Leu	synonymous_variant	Exon 12 of 17	1		ENSP00000358052.1	P21802-17
FGFR2	ENST00000369058.7 link	c.1852T>C	p.Leu618Leu	synonymous_variant	Exon 13 of 17	1		ENSP00000358054.3	A0A5S6RJB7
FGFR2	ENST00000613048.4 link	c.1582T>C	p.Leu528Leu	synonymous_variant	Exon 12 of 17	5		ENSP00000484154.1	D2CGD1
FGFR2	ENST00000369061.8 link	c.1513T>C	p.Leu505Leu	synonymous_variant	Exon 10 of 15	1		ENSP00000358057.4	P21802-23
FGFR2	ENST00000369059.5 link	c.1507T>C	p.Leu503Leu	synonymous_variant	Exon 11 of 16	5		ENSP00000358055.1	E7EVR7
FGFR2	ENST00000360144.7 link	c.1585T>C	p.Leu529Leu	synonymous_variant	Exon 12 of 17	2		ENSP00000353262.3	P21802-22
FGFR2	ENST00000478859.5 link	c.1165T>C	p.Leu389Leu	synonymous_variant	Exon 12 of 17	1		ENSP00000474011.1	S4R381
FGFR2	ENST00000429361.5 link	c.625T>C	p.Leu209Leu	synonymous_variant	Exon 5 of 9	5		ENSP00000404219.1	H7C265
FGFR2	ENST00000604236.5 link	n.*896T>C		non_coding_transcript_exon_variant	Exon 12 of 17	1		ENSP00000474109.1	S4R3B2
FGFR2	ENST00000604236.5 link	n.*896T>C		3_prime_UTR_variant	Exon 12 of 17	1		ENSP00000474109.1	S4R3B2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1461870

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

727238

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33478

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.0000252

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53418

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5756

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1112006

Other (OTH)

AF:

0.00

AC:

AN:

60394

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.500

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.55

CADD

Benign

4.3

(source)

DANN

Benign

0.76

PhyloP100

0.42

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over