rs137854487

chr2-215375685-A-Cchr2-215375685-A-G

Variant summary

Our verdict is Pathogenic. Variant got 10 ACMG points: 10P and 0B. PM2 PM5 PP2 PP3_Strong PP5

The NM_212482.4(FN1):c.5921T>G(p.Leu1974Arg) 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 (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. L1974P) has been classified as Pathogenic.

• Frequency: Genomes: not found (cov: 32)
• Consequence: FN1 NM_212482.4 missense
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 9.09

Genes affected

FN1 (HGNC:3778): (fibronectin 1) This gene encodes fibronectin, a glycoprotein present in a soluble dimeric form in plasma, and in a dimeric or multimeric form at the cell surface and in extracellular matrix. The encoded preproprotein is proteolytically processed to generate the mature protein. Fibronectin is involved in cell adhesion and migration processes including embryogenesis, wound healing, blood coagulation, host defense, and metastasis. The gene has three regions subject to alternative splicing, with the potential to produce 20 different transcript variants, at least one of which encodes an isoform that undergoes proteolytic processing. The full-length nature of some variants has not been determined. [provided by RefSeq, Jan 2016]

ACMG classification

Verdict is Pathogenic. Variant got 10 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr2-215375685-A-G is described in ClinVar as [Pathogenic]. Clinvar id is 192245.Status of the report is no_assertion_criteria_provided, 0 stars.
• PP2: Missense variant where missense usually causes diseases, FN1
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.975
• PP5: Variant 2-215375685-A-C is Pathogenic according to our data. Variant chr2-215375685-A-C is described in ClinVar as [Pathogenic]. Clinvar id is 16324.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
FN1	NM_212482.4	c.5921T>G	p.Leu1974Arg	missense_variant	37/46	ENST00000354785.11

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
FN1	ENST00000354785.11	c.5921T>G	p.Leu1974Arg	missense_variant	37/46	1	NM_212482.4	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

Glomerulopathy with fibronectin deposits 2 Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

Feb 19, 2008

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.95
BayesDel_addAF	Pathogenic	0.34	D
BayesDel_noAF	Pathogenic	0.25
Cadd	Pathogenic	27
Dann	Uncertain	1.0
Eigen	Pathogenic	0.72
Eigen_PC	Pathogenic	0.74
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.93	D;D;D;D;D;D;D;D;D;D;D;D
M_CAP	Uncertain	0.097	D
MetaRNN	Pathogenic	0.98	D;D;D;D;D;D;D;D;D;D;D;D
MetaSVM	Uncertain	-0.28	T
MutationTaster	Benign	0.049	A;A;A;A;A;A;A;A;A;A;A;A;A
PrimateAI	Uncertain	0.63	T
PROVEAN	Uncertain	-4.0	D;D;D;D;D;D;D;D;D;D;D;D
REVEL	Pathogenic	0.74
Sift	Pathogenic	0.0	D;D;D;D;D;D;D;D;D;D;D;D
Sift4G	Uncertain	0.0020	D;D;D;D;D;D;D;D;D;D;D;D
Polyphen		0.97	D;D;D;D;P;D;.;D;D;P;.;.
Vest4		0.97
MutPred		0.83		.;.;Loss of stability (P = 0.0514);.;.;Loss of stability (P = 0.0514);Loss of stability (P = 0.0514);.;.;.;.;.;
MVP		0.82
MPC		1.1
ClinPred		1.0	D
GERP RS		5.7
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		2.8
Varity_R		0.96
gMVP		0.94

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

LitVar

Other links and lift over

dbSNP: rs137854487; hg19: chr2-216240408;