rs121918495

chr10-121517382-T-Achr10-121517382-T-Cchr10-121517382-T-G

Variant summary

Our verdict is Likely pathogenic. Variant got 9 ACMG points: 9P and 0B. PM1 PM2 PM5 PP2 PP3_Moderate

The NM_000141.5(FGFR2):c.1021A>T(p.Thr341Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. 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. T341P) has been classified as Pathogenic.

• Frequency: Genomes: not found (cov: 32)
• Consequence: FGFR2 NM_000141.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 7.96

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 Likely_pathogenic. Variant got 9 ACMG points.

• PM1: In a hotspot region, there are 7 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 6 uncertain in NM_000141.5
• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr10-121517382-T-G is described in ClinVar as [Pathogenic]. Clinvar id is 13274.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• PP2: Missense variant where missense usually causes diseases, FGFR2
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.9

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
FGFR2	NM_000141.5	c.1021A>T	p.Thr341Ser	missense_variant	8/18	ENST00000358487.10
FGFR2	NM_022970.4	c.1087+1300A>T		intron_variant		ENST00000457416.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
FGFR2	ENST00000358487.10	c.1021A>T	p.Thr341Ser	missense_variant	8/18	1	NM_000141.5	A2
FGFR2	ENST00000457416.7	c.1087+1300A>T		intron_variant		1	NM_022970.4	P4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.57
BayesDel_addAF	Pathogenic	0.38	D
BayesDel_noAF	Pathogenic	0.30
Cadd	Pathogenic	27
Dann	Uncertain	0.99
Eigen	Uncertain	0.45
Eigen_PC	Uncertain	0.56
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Benign	0.83	T;T;T;T;T;T;T;T
M_CAP	Pathogenic	0.40	D
MetaRNN	Pathogenic	0.90	D;D;D;D;D;D;D;D
MetaSVM	Pathogenic	0.97	D
MutationTaster	Benign	1.0	D;D;D;D;D;D;D;D;D;D;D
PROVEAN	Uncertain	-2.5	N;.;N;.;N;N;.;D
REVEL	Pathogenic	0.81
Sift	Uncertain	0.0060	D;.;D;.;D;D;.;D
Sift4G	Benign	0.086	T;T;D;T;T;D;D;.
Polyphen		0.31	B;.;.;.;B;.;.;.
Vest4		0.88
MutPred		0.70		.;.;Gain of sheet (P = 0.039);.;.;Gain of sheet (P = 0.039);.;.;
MVP		0.90
ClinPred		0.75	D
GERP RS		5.9
Varity_R		0.56

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		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: chr10-123276896;