rs143978938

chr10-121593784-C-Gchr10-121593784-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 3P and 2B. PM2 PP2 BP4_Moderate

The NM_000141.5(FGFR2):c.34G>C(p.Val12Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000274 in 1,461,888 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign 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. V12M) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000027 (0 hom.)
• Consequence: FGFR2 NM_000141.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.757

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant where missense usually causes diseases, FGFR2
• BP4: Computational evidence support a benign effect (MetaRNN=0.11731312).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
FGFR2	NM_022970.4	c.34G>C	p.Val12Leu	missense_variant	2/18	ENST00000457416.7
FGFR2	NM_000141.5	c.34G>C	p.Val12Leu	missense_variant	2/18	ENST00000358487.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
FGFR2	ENST00000457416.7	c.34G>C	p.Val12Leu	missense_variant	2/18	1	NM_022970.4	P4
FGFR2	ENST00000358487.10	c.34G>C	p.Val12Leu	missense_variant	2/18	1	NM_000141.5	A2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000274 AC: 4 AN: 1461888 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 727244

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: 0.0000331

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.080
BayesDel_addAF	Benign	-0.0047	T
BayesDel_noAF	Benign	-0.24
Cadd	Benign	14
Dann	Benign	0.87
Eigen	Benign	-0.61
Eigen_PC	Benign	-0.52
FATHMM_MKL	Benign	0.49	N
LIST_S2	Benign	0.84	T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T
M_CAP	Benign	0.021	T
MetaRNN	Benign	0.12	T;T;T;T;T;T;T;T;T;T;T;T;T;T;T;T
MetaSVM	Benign	-0.89	T
MutationAssessor	Benign	0.55	N;N;.;N;N;N;.;N;.;N;N;N;N;.;N;.
MutationTaster	Benign	1.0	N;N;N;N;N;N;N;N;N;N;N;N
PrimateAI	Benign	0.35	T
PROVEAN	Benign	0.25	N;N;.;N;N;N;N;N;N;N;N;N;N;N;N;.
REVEL	Uncertain	0.30
Sift	Benign	1.0	T;T;.;T;T;T;T;T;T;T;T;T;T;T;T;.
Sift4G	Benign	0.71	T;T;T;T;T;T;T;T;T;T;T;T;T;.;T;T
Polyphen		0.0	.;B;.;B;B;.;.;.;.;.;B;B;.;.;.;.
Vest4		0.14
MutPred		0.47		Loss of catalytic residue at V12 (P = 0.064);Loss of catalytic residue at V12 (P = 0.064);Loss of catalytic residue at V12 (P = 0.064);Loss of catalytic residue at V12 (P = 0.064);Loss of catalytic residue at V12 (P = 0.064);Loss of catalytic residue at V12 (P = 0.064);Loss of catalytic residue at V12 (P = 0.064);Loss of catalytic residue at V12 (P = 0.064);Loss of catalytic residue at V12 (P = 0.064);Loss of catalytic residue at V12 (P = 0.064);Loss of catalytic residue at V12 (P = 0.064);Loss of catalytic residue at V12 (P = 0.064);Loss of catalytic residue at V12 (P = 0.064);Loss of catalytic residue at V12 (P = 0.064);Loss of catalytic residue at V12 (P = 0.064);Loss of catalytic residue at V12 (P = 0.064);
MVP		0.65
MPC		0.22
ClinPred		0.038	T
GERP RS		0.59
Varity_R		0.050
gMVP		0.38

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: chr10-123353298;