chr10-121478936-C-T

Variant names:

• chr10-121478936-C-T
• rs185617859
• NM_022970.4:c.*921G>A

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP4_Strong BS1_Supporting BS2

The NM_000141.5(FGFR2):​c.*921G>A variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000261 in 233,386 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: 𝑓 0.00028 (0 hom., cov: 33)
  • Exomes 𝑓: 0.00022 (0 hom.)
• Consequence: FGFR2 NM_000141.5 3_prime_UTR
• Clinical Significance: Uncertain significance criteria provided, single submitter U:5
• Conservation: PhyloP100: -0.463
• Publications: 0 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: Benign. The variant received -9 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.85).
• BS1: Variant frequency is greater than expected in population eas. GnomAd4 allele frequency = 0.000282 (43/152286) while in subpopulation EAS AF = 0.000772 (4/5180). AF 95% confidence interval is 0.000367. There are 0 homozygotes in GnomAd4. There are 21 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting
• BS2: High AC in GnomAd4 at 43 AD gene.

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.*921G>A		3_prime_UTR	Exon 18 of 18	NP_075259.4	P21802-3
	FGFR2	NM_000141.5	MANE Select	c.*921G>A		3_prime_UTR	Exon 18 of 18	NP_000132.3	P21802-1
	FGFR2	NM_001441087.1		c.*921G>A		3_prime_UTR	Exon 18 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.*921G>A		3_prime_UTR	Exon 18 of 18	ENSP00000410294.2	P21802-3
	FGFR2	ENST00000358487.10	TSL:1 MANE Select	c.*921G>A		3_prime_UTR	Exon 18 of 18	ENSP00000351276.6	P21802-1
	FGFR2	ENST00000613048.4	TSL:5	c.*921G>A		3_prime_UTR	Exon 17 of 17	ENSP00000484154.1	D2CGD1

Frequencies

GnomAD3 genomes AF: 0.000283 AC: 43 AN: 152168 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.0000965

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0000655

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.000770

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000500

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.000222 AC: 18 AN: 81100 Hom.: 0 Cov.: 0 AF XY: 0.000268 AC XY: 10 AN XY: 37332

African (AFR) AF: 0.00 AC: 0 AN: 3876

American (AMR) AF: 0.00 AC: 0 AN: 2492

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 5110

East Asian (EAS) AF: 0.0000880 AC: 1 AN: 11358

South Asian (SAS) AF: 0.00 AC: 0 AN: 700

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 484

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 488

European-Non Finnish (NFE) AF: 0.000321 AC: 16 AN: 49852

Other (OTH) AF: 0.000148 AC: 1 AN: 6740

GnomAD4 genome AF: 0.000282 AC: 43 AN: 152286 Hom.: 0 Cov.: 33 AF XY: 0.000282 AC XY: 21 AN XY: 74468

African (AFR) AF: 0.0000962 AC: 4 AN: 41566

American (AMR) AF: 0.0000654 AC: 1 AN: 15292

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.000772 AC: 4 AN: 5180

South Asian (SAS) AF: 0.00 AC: 0 AN: 4822

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10598

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.000500 AC: 34 AN: 68036

Other (OTH) AF: 0.00 AC: 0 AN: 2114

Alfa AF: 0.000212 Hom.: 0

Bravo AF: 0.000204

Asia WGS AF: 0.000289 AC: 1 AN: 3478

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	Beare-Stevenson cutis gyrata syndrome (1)
-	1	-	Craniosynostosis syndrome (1)
-	1	-	Crouzon syndrome (1)
-	1	-	Isolated Coronal Synostosis (1)
-	1	-	Saethre-Chotzen syndrome (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.85
CADD	Benign	0.92
DANN	Benign	0.57
PhyloP100		-0.46

Splicing

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

Other links and lift over

dbSNP: rs185617859; hg19: chr10-123238450;