chr7-128851482-C-CA

Variant names:

• chr7-128851482-C-CA
• rs1554400700
• NM_001458.5:c.5697dupA

Variant summary

Our verdict is Pathogenic. The variant received 12 ACMG points: 12P and 0B. PVS1 PM2 PP5_Moderate

The NM_001458.5(FLNC):​c.5697dupA​(p.Ser1900IlefsTer8) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Pathogenic (★). Synonymous variant affecting the same amino acid position (i.e. S1900S) has been classified as Likely benign. Variant results in nonsense mediated mRNA decay.

• Frequency: Genomes: not found (cov: 33)
• Consequence: FLNC NM_001458.5 frameshift
• Clinical Significance: Pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: -7.28
• Publications: 0 publications found

Genes affected

FLNC (HGNC:3756): (filamin C) This gene encodes one of three related filamin genes, specifically gamma filamin. These filamin proteins crosslink actin filaments into orthogonal networks in cortical cytoplasm and participate in the anchoring of membrane proteins for the actin cytoskeleton. Three functional domains exist in filamin: an N-terminal filamentous actin-binding domain, a C-terminal self-association domain, and a membrane glycoprotein-binding domain. Mutations in this gene are a cause of cardiopathy. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, May 2022]

FLNC-AS1 (HGNC:53474): (FLNC antisense RNA 1)

ACMG classification

Our verdict: Pathogenic. The variant received 12 ACMG points.

• PVS1: Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 7-128851482-C-CA is Pathogenic according to our data. Variant chr7-128851482-C-CA is described in ClinVar as Pathogenic. ClinVar VariationId is 539446.Status of the report is criteria_provided_single_submitter, 1 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001458.5. 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
	FLNC	NM_001458.5	MANE Select	c.5697dupA	p.Ser1900IlefsTer8	frameshift	Exon 35 of 48	NP_001449.3	Q14315-1
	FLNC	NM_001127487.2		c.5598dupA	p.Ser1867IlefsTer8	frameshift	Exon 34 of 47	NP_001120959.1	Q14315-2
	FLNC-AS1	NR_149055.1		n.233dupT		non_coding_transcript_exon	Exon 3 of 4

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FLNC	ENST00000325888.13	TSL:1 MANE Select	c.5697dupA	p.Ser1900IlefsTer8	frameshift	Exon 35 of 48	ENSP00000327145.8	Q14315-1
	FLNC	ENST00000346177.6	TSL:1	c.5598dupA	p.Ser1867IlefsTer8	frameshift	Exon 34 of 47	ENSP00000344002.6	Q14315-2
	FLNC	ENST00000950263.1		c.5595dupA	p.Ser1866IlefsTer8	frameshift	Exon 34 of 47	ENSP00000620322.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 34

GnomAD4 genome Cov.: 33

ClinVar

ClinVar submissions

Significance: Pathogenic

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
1	-	-	Myofibrillar myopathy 5;C3279722:Distal myopathy with posterior leg and anterior hand involvement;C4310749:Hypertrophic cardiomyopathy 26;CN239310:Dilated Cardiomyopathy, Dominant (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		-7.3
Mutation Taster		=0/200	disease causing (ClinVar)

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.040		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: rs1554400700; hg19: chr7-128491536;