7-152823427-C-T

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 1P and 6B. PP2BP4_ModerateBS2

The NM_020445.6(ACTR3B):c.770C>T(p.Thr257Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000818 in 1,614,070 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000092 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000081 ( 1 hom. )

Consequence

ACTR3B
NM_020445.6 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.96

Variant links:

Genes affected

ACTR3B (HGNC:17256): (actin related protein 3B) This gene encodes a member of the actin-related proteins (ARP), which form multiprotein complexes and share 35-55% amino acid identity with conventional actin. The protein encoded by this gene may have a regulatory role in the actin cytoskeleton and induce cell-shape change and motility. Pseudogenes of this gene are located on chromosomes 2, 4, 10, 16, 22 and Y. Alternative splicing results in multiple transcript variants and protein isoforms. [provided by RefSeq, Jul 2012]

ACTR3B links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -5 ACMG points.

PP2

Missense variant where missense usually causes diseases, ACTR3B

BP4

Computational evidence support a benign effect (MetaRNN=0.17585877).

BS2

High AC in GnomAd at 14 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ACTR3B	NM_020445.6 linkuse as main transcript	c.770C>T	p.Thr257Met	missense_variant	8/12	ENST00000256001.13

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ACTR3B	ENST00000256001.13 linkuse as main transcript	c.770C>T	p.Thr257Met	missense_variant	8/12	1	NM_020445.6	P1	Q9P1U1-1
ACTR3B	ENST00000377776.7 linkuse as main transcript	c.770C>T	p.Thr257Met	missense_variant	8/10	1			Q9P1U1-3
ACTR3B	ENST00000397282.2 linkuse as main transcript	c.506C>T	p.Thr169Met	missense_variant	7/11	2			Q9P1U1-2
ACTR3B	ENST00000479402.1 linkuse as main transcript	n.4238C>T		non_coding_transcript_exon_variant	4/8	2

Frequencies

GnomAD3 genomes

AF:

0.0000920

AC:

AN:

152188

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000121

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000103

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.000103

AC:

AN:

251468

Hom.:

AF XY:

0.000125

AC XY:

AN XY:

135900

show subpopulations

Gnomad AFR exome

AF:

0.000185

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.0000992

Gnomad EAS exome

AF:

0.0000544

Gnomad SAS exome

AF:

0.000294

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000967

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000807

AC:

118

AN:

1461882

Hom.:

Cov.:

AF XY:

0.0000825

AC XY:

AN XY:

727242

show subpopulations

Gnomad4 AFR exome

AF:

0.0000896

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.0000383

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000232

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000746

Gnomad4 OTH exome

AF:

0.0000993

GnomAD4 genome

AF:

0.0000920

AC:

AN:

152188

Hom.:

Cov.:

AF XY:

0.0000807

AC XY:

AN XY:

74340

show subpopulations

Gnomad4 AFR

AF:

0.000121

Gnomad4 AMR

AF:

0.0000655

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000103

Gnomad4 OTH

AF:

0.000478

Alfa

AF:

0.000260

Hom.:

Bravo

AF:

0.000140

ExAC

AF:

0.000148

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 28, 2022

The c.770C>T (p.T257M) alteration is located in exon 8 (coding exon 8) of the ACTR3B gene. This alteration results from a C to T substitution at nucleotide position 770, causing the threonine (T) at amino acid position 257 to be replaced by a methionine (M). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.35

BayesDel_noAF

Benign

-0.45

Cadd

Uncertain

Dann

Uncertain

1.0

Eigen

Benign

-0.079

Eigen_PC

Benign

-0.022

FATHMM_MKL

Uncertain

0.88

LIST_S2

Uncertain

0.96

D;D;D

M_CAP

Benign

0.0069

MetaRNN

Benign

0.18

T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Uncertain

2.1

M;M;.

MutationTaster

Benign

0.90

D;D;D;D

PrimateAI

Uncertain

0.67

PROVEAN

Benign

-1.2

N;N;N

REVEL

Benign

0.069

Sift

Benign

0.069

T;T;T

Sift4G

Benign

0.082

T;T;T

Polyphen

0.12

B;B;.

Vest4

0.69

MVP

0.17

MPC

0.99

ClinPred

0.040

GERP RS

3.9

Varity_R

0.090

gMVP

0.54

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over