rs387906677

Variant names:

• chr10-121515232-A-C
• rs387906677
• NM_022970.4:c.1175T>G

Your query was ambiguous. Multiple possible variants found:

• chr10-121515232-A-C
• chr10-121515232-A-T

Variant summary

Our verdict is Pathogenic. The variant received 10 ACMG points: 10P and 0B. PS3 PM2 PP2 PP3 PP5_Moderate

The NM_000141.5(FGFR2):​c.1172T>G​(p.Met391Arg) 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. Variant has been reported in ClinVar as Pathogenic (★). ClinVar reports functional evidence for this variant: "SCV000582486: Functional studies of the M391R substitution determined it results in reduction of plasma membrane levels of FGFR2, thus diminishing receptor responsiveness to extracellular fibroblast growth factors (Merrill et al., 2012). Further studies of M391R revealed enhanced nuclear FGFR2 activity, with direct interaction with ribosomal RNA, ultimately promoting proliferation and reducing osteoblast differentiation in osteoprogenitor cells (Neben et al., 2014).". Another variant affecting the same amino acid position, but resulting in a different missense (i.e. M391I) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 31)
• Consequence: FGFR2 NM_000141.5 missense
• Clinical Significance: Pathogenic criteria provided, single submitter P:2
• Conservation: PhyloP100: 9.23
• Publications: 28 publications found

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: ClinGen, Genomics England PanelApp, G2P, Orphanet
• Beare-Stevenson cutis gyrata syndrome

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Genomics England PanelApp, Orphanet, ClinGen, G2P
• bent bone dysplasia syndrome 1

  Inheritance: AD Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), Ambry Genetics, ClinGen
• Crouzon syndrome

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Genomics England PanelApp, ClinGen, Ambry Genetics, G2P
• Jackson-Weiss syndrome

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Genomics England PanelApp, Orphanet, G2P
• LADD syndrome 1

  Inheritance: AD Classification: DEFINITIVE, STRONG, MODERATE Submitted by: G2P, Ambry Genetics, Labcorp Genetics (formerly Invitae)
• Pfeiffer syndrome

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Genomics England PanelApp, Labcorp Genetics (formerly Invitae), ClinGen, G2P, Ambry Genetics
• Antley-Bixler syndrome without genital anomalies or disordered steroidogenesis

  Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp, G2P
• familial scaphocephaly syndrome, McGillivray type

  Inheritance: AD Classification: STRONG, SUPPORTIVE Submitted by: Genomics England PanelApp, Orphanet
• Saethre-Chotzen syndrome

  Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp
• Antley-Bixler syndrome

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• LADD syndrome

  Inheritance: AD Classification: SUPPORTIVE, LIMITED Submitted by: Orphanet, ClinGen
• 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

ACMG classification

Our verdict: Pathogenic. The variant received 10 ACMG points.

• PS3: PS3 evidence extracted from ClinVar submissions: SCV000582486: Functional studies of the M391R substitution determined it results in reduction of plasma membrane levels of FGFR2, thus diminishing receptor responsiveness to extracellular fibroblast growth factors (Merrill et al., 2012). Further studies of M391R revealed enhanced nuclear FGFR2 activity, with direct interaction with ribosomal RNA, ultimately promoting proliferation and reducing osteoblast differentiation in osteoprogenitor cells (Neben et al., 2014).
• PM2: Very rare variant in population databases, with high coverage
• 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 bent bone dysplasia syndrome 1, Crouzon syndrome, Beare-Stevenson cutis gyrata syndrome, Antley-Bixler syndrome without genital anomalies or disordered steroidogenesis, Apert syndrome, familial scaphocephaly syndrome, McGillivray type, Pfeiffer syndrome, Jackson-Weiss syndrome, Saethre-Chotzen syndrome, LADD syndrome, Antley-Bixler syndrome, LADD syndrome 1, Pfeiffer syndrome type 2, Pfeiffer syndrome type 3, Pfeiffer syndrome type 1.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.836
• PP5: Variant 10-121515232-A-C is Pathogenic according to our data. Variant chr10-121515232-A-C is described in ClinVar as Pathogenic. ClinVar VariationId is 29855.Status of the report is criteria_provided_single_submitter, 1 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000141.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FGFR2	NM_022970.4	MANE Plus Clinical	c.1175T>G	p.Met392Arg	missense	Exon 9 of 18	NP_075259.4	P21802-3
	FGFR2	NM_000141.5	MANE Select	c.1172T>G	p.Met391Arg	missense	Exon 9 of 18	NP_000132.3	P21802-1
	FGFR2	NM_001441087.1		c.1175T>G	p.Met392Arg	missense	Exon 9 of 18	NP_001428016.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FGFR2	ENST00000457416.7	TSL:1 MANE Plus Clinical	c.1175T>G	p.Met392Arg	missense	Exon 9 of 18	ENSP00000410294.2	P21802-3
	FGFR2	ENST00000358487.10	TSL:1 MANE Select	c.1172T>G	p.Met391Arg	missense	Exon 9 of 18	ENSP00000351276.6	P21802-1
	FGFR2	ENST00000369056.5	TSL:1	c.1175T>G	p.Met392Arg	missense	Exon 8 of 17	ENSP00000358052.1	P21802-17

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 31

Alfa AF: 0.00 Hom.: 0

ClinVar

ClinVar submissions

Significance: Pathogenic

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
1	-	-	Bent bone dysplasia syndrome 1 (1)
1	-	-	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.99
BayesDel_addAF	Pathogenic	0.43	D
BayesDel_noAF	Pathogenic	0.38
CADD	Pathogenic	30
DANN	Uncertain	0.98
DEOGEN2	Pathogenic	0.81	D
Eigen	Uncertain	0.59
Eigen_PC	Uncertain	0.66
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Pathogenic	0.97	D
M_CAP	Uncertain	0.15	D
MetaRNN	Pathogenic	0.84	D
MetaSVM	Uncertain	0.31	D
MutationAssessor	Uncertain	2.7	M
PhyloP100		9.2
PrimateAI	Uncertain	0.79	T
PROVEAN	Uncertain	-2.5	N
REVEL	Pathogenic	0.82
Sift	Uncertain	0.0080	D
Sift4G	Benign	0.10	T
Polyphen		0.96	D
Vest4		0.92
MutPred		0.69		Gain of MoRF binding (P = 0.0141)
MVP		0.92
MPC		2.2
ClinPred		0.96	D
GERP RS		5.8
PromoterAI		-0.011	Neutral
Varity_R		0.89
gMVP		0.93
Mutation Taster		=0/100	disease causing (ClinVar)

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.21		Details are displayed if max score is > 0.2
DS_AG_spliceai		0.21		Position offset: -1

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs387906677; hg19: chr10-123274746; COSMIC: COSV60651291;