rs397517858

Variant names:

• chr1-77918218-A-C
• rs397517858
• NM_144573.4:c.392A>C

Your query was ambiguous. Multiple possible variants found:

• chr1-77918218-A-C
• chr1-77918218-A-G

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2 PM5

The NM_144573.4(NEXN):​c.392A>C​(p.Gln131Pro) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. Q131E) has been classified as Pathogenic.

• Frequency: Genomes: not found (cov: 32)
• Consequence: NEXN NM_144573.4 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 8.03
• Publications: 2 publications found

Genes affected

NEXN (HGNC:29557): (nexilin F-actin binding protein) This gene encodes a filamentous actin-binding protein that may function in cell adhesion and migration. Mutations in this gene have been associated with dilated cardiomyopathy, also known as CMD1CC. Alternatively spliced transcript variants have been described.[provided by RefSeq, Feb 2010]

NEXN Gene-Disease associations (from GenCC):

• dilated cardiomyopathy

  Inheritance: AD Classification: MODERATE Submitted by: ClinGen
• familial isolated dilated cardiomyopathy

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• dilated cardiomyopathy 1CC

  Inheritance: AD Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae)
• hypertrophic cardiomyopathy

  Inheritance: AD Classification: LIMITED Submitted by: ClinGen
• hypertrophic cardiomyopathy 20

  Inheritance: AD Classification: LIMITED Submitted by: PanelApp Australia, Labcorp Genetics (formerly Invitae)

ACMG classification

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr1-77918217-C-G is described in ClinVar as Pathogenic. ClinVar VariationId is 30993.Status of the report is no_assertion_criteria_provided, 0 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_144573.4. 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
	NEXN	NM_144573.4	MANE Select	c.392A>C	p.Gln131Pro	missense	Exon 5 of 13	NP_653174.3
	NEXN	NM_001172309.2		c.200A>C	p.Gln67Pro	missense	Exon 4 of 12	NP_001165780.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NEXN	ENST00000334785.12	TSL:1 MANE Select	c.392A>C	p.Gln131Pro	missense	Exon 5 of 13	ENSP00000333938.7
	NEXN	ENST00000342754.5	TSL:1	c.89A>C	p.Gln30Pro	missense	Exon 1 of 10	ENSP00000343928.5
	NEXN	ENST00000401035.7	TSL:1	c.200A>C	p.Gln67Pro	missense	Exon 4 of 9	ENSP00000383814.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

ClinVar

ClinVar submissions as Germline

Significance: Uncertain significance

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	1	-	Cardiovascular phenotype (1)
-	1	-	Dilated cardiomyopathy 1CC;C3151267:Hypertrophic cardiomyopathy 20 (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.97
BayesDel_addAF	Pathogenic	0.35	D
BayesDel_noAF	Pathogenic	0.27
CADD	Pathogenic	26
DANN	Uncertain	1.0
DEOGEN2	Benign	0.20	T
Eigen	Pathogenic	0.83
Eigen_PC	Pathogenic	0.81
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Pathogenic	0.97	D
M_CAP	Uncertain	0.097	D
MetaRNN	Uncertain	0.62	D
MetaSVM	Uncertain	0.010	D
MutationAssessor	Uncertain	2.6	M
PhyloP100		8.0
PrimateAI	Uncertain	0.68	T
PROVEAN	Uncertain	-4.0	D
REVEL	Uncertain	0.44
Sift	Uncertain	0.0020	D
Sift4G	Uncertain	0.011	D
Polyphen		1.0	D
Vest4		0.70
MutPred		0.26		Loss of helix (P = 0.0237)
MVP		0.94
MPC		0.22
ClinPred		0.97	D
GERP RS		5.8
PromoterAI		0.070	Neutral
Varity_R		0.63
gMVP		0.54
Mutation Taster		=54/46	polymorphism

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

Other links and lift over

dbSNP: rs397517858; hg19: chr1-78383903;