NM_005159.5:c.623G>A

Variant names:

• chr15-34792275-C-T
• rs142839840
• NM_005159.5:c.623G>A

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM1 BS2

The NM_005159.5(ACTC1):​c.623G>A​(p.Arg208His) variant causes a missense change. The variant allele was found at a frequency of 0.00000752 in 1,461,886 control chromosomes in the GnomAD database, with no homozygous occurrence. 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. R208S) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000075 (0 hom.)
• Consequence: ACTC1 NM_005159.5 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:9 O:1
• Conservation: PhyloP100: 6.16
• Publications: 4 publications found

Genes affected

ACTC1 (HGNC:143): (actin alpha cardiac muscle 1) Actins are highly conserved proteins that are involved in various types of cell motility. Polymerization of globular actin (G-actin) leads to a structural filament (F-actin) in the form of a two-stranded helix. Each actin can bind to four others. The protein encoded by this gene belongs to the actin family which is comprised of three main groups of actin isoforms, alpha, beta, and gamma. The alpha actins are found in muscle tissues and are a major constituent of the contractile apparatus. Defects in this gene have been associated with idiopathic dilated cardiomyopathy (IDC) and familial hypertrophic cardiomyopathy (FHC). [provided by RefSeq, Jul 2008]

GJD2-DT (HGNC:55560): (GJD2 divergent transcript)

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM1: In a hotspot region, there are 3 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 6 uncertain in NM_005159.5
• BS2: High AC in GnomAdExome4 at 11 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_005159.5. 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
	ACTC1	NM_005159.5	MANE Select	c.623G>A	p.Arg208His	missense	Exon 5 of 7	NP_005150.1	P68032
	ACTC1	NM_001406482.1		c.623G>A	p.Arg208His	missense	Exon 4 of 6	NP_001393411.1	P68032
	ACTC1	NM_001406483.1		c.623G>A	p.Arg208His	missense	Exon 5 of 7	NP_001393412.1	P68032

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ACTC1	ENST00000290378.6	TSL:1 MANE Select	c.623G>A	p.Arg208His	missense	Exon 5 of 7	ENSP00000290378.4	P68032
	ACTC1	ENST00000713613.1		c.734G>A	p.Arg245His	missense	Exon 6 of 8	ENSP00000518909.1	A0AAQ5BGG2
	ACTC1	ENST00000868408.1		c.629G>A	p.Arg210His	missense	Exon 5 of 7	ENSP00000538467.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.0000398 AC: 10 AN: 251470 AF XY: 0.0000368

Gnomad AFR exome AF: 0.0000615

Gnomad AMR exome AF: 0.000116

Gnomad ASJ exome AF: 0.0000992

Gnomad EAS exome AF: 0.0000544

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000176

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000752 AC: 11 AN: 1461886 Hom.: 0 Cov.: 32 AF XY: 0.00000688 AC XY: 5 AN XY: 727246

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.000112 AC: 5 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.0000383 AC: 1 AN: 26136

East Asian (EAS) AF: 0.0000252 AC: 1 AN: 39700

South Asian (SAS) AF: 0.0000232 AC: 2 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53416

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00000180 AC: 2 AN: 1112008

Other (OTH) AF: 0.00 AC: 0 AN: 60396

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.0000113

ESP6500AA AF: 0.000227 AC: 1

ESP6500EA AF: 0.000233 AC: 2

ExAC AF: 0.0000412 AC: 5

EpiCase AF: 0.0000545

EpiControl AF: 0.00

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	3	-	not provided (3)
-	1	-	ACTC1-related disorder (1)
-	1	-	Cardiomyopathy (1)
-	1	-	Cardiovascular phenotype (1)
-	1	-	Hypertrophic cardiomyopathy (1)
-	1	-	Hypertrophic cardiomyopathy 11;C2748552:Atrial septal defect 5;C3150681:Dilated cardiomyopathy 1R (1)
-	1	-	not specified (1)
-	-	-	Left ventricular noncompaction 1;C2677506:Hypertrophic cardiomyopathy 11;C2748552:Atrial septal defect 5;C3150681:Dilated cardiomyopathy 1R (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.87
CardioboostCm	Uncertain	0.68
BayesDel_addAF	Benign	0.0082	T
BayesDel_noAF	Uncertain	0.0
CADD	Pathogenic	32
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.94	D
Eigen	Uncertain	0.25
Eigen_PC	Uncertain	0.37
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.94	D
M_CAP	Pathogenic	0.33	D
MetaRNN	Uncertain	0.62	D
MetaSVM	Uncertain	0.61	D
MutationAssessor	Benign	2.0	M
PhyloP100		6.2
PrimateAI	Pathogenic	0.90	D
PROVEAN	Uncertain	-3.7	D
REVEL	Uncertain	0.61
Sift4G	Benign	0.064	T
Polyphen		0.0	B
Vest4		0.39
MVP		0.89
MPC		3.3
ClinPred		0.60	D
GERP RS		4.9
Varity_R		0.90
gMVP		0.94
Mutation Taster		=45/55	disease causing

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: rs142839840; hg19: chr15-35084476; COSMIC: COSV51758597; COSMIC: COSV51758597;