rs228406

Variant names:

• chrX-32485077-T-A
• rs228406
• NM_004006.3:c.2645A>T

Your query was ambiguous. Multiple possible variants found:

• chrX-32485077-T-A
• chrX-32485077-T-C
• chrX-32485077-T-G

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_004006.3(DMD):​c.2645A>T​(p.Asp882Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000166 in 1,207,876 control chromosomes in the GnomAD database, with no homozygous occurrence. There are no hemizygote samples in GnomAD. In-silico tool predicts a benign outcome for this variant. 14/19 in silico tools predict a benign outcome for this variant. 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. D882G) has been classified as Benign.

• Frequency:
  • Genomes: 𝑓 0.0000091 (0 hom., 0 hem., cov: 23)
  • Exomes 𝑓: 9.1e-7 (0 hom. 0 hem.)
• Consequence: DMD NM_004006.3 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:4
• Conservation: PhyloP100: 0.937
• Publications: 44 publications found

Genes affected

DMD (HGNC:2928): (dystrophin) This gene spans a genomic range of greater than 2 Mb and encodes a large protein containing an N-terminal actin-binding domain and multiple spectrin repeats. The encoded protein forms a component of the dystrophin-glycoprotein complex (DGC), which bridges the inner cytoskeleton and the extracellular matrix. Deletions, duplications, and point mutations at this gene locus may cause Duchenne muscular dystrophy (DMD), Becker muscular dystrophy (BMD), or cardiomyopathy. Alternative promoter usage and alternative splicing result in numerous distinct transcript variants and protein isoforms for this gene. [provided by RefSeq, Dec 2016]

DMD Gene-Disease associations (from GenCC):

• Becker muscular dystrophy

  Inheritance: XL Classification: DEFINITIVE, SUPPORTIVE Submitted by: Ambry Genetics, Orphanet
• dilated cardiomyopathy 3B

  Inheritance: XL Classification: DEFINITIVE Submitted by: Ambry Genetics
• Duchenne and Becker muscular dystrophy

  Inheritance: XL Classification: DEFINITIVE Submitted by: Myriad Women’s Health
• Duchenne muscular dystrophy

  Inheritance: XL Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), G2P, Orphanet
• progressive muscular dystrophy

  Inheritance: XL Classification: DEFINITIVE Submitted by: ClinGen
• familial isolated dilated cardiomyopathy

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• non-syndromic X-linked intellectual disability

  Inheritance: XL Classification: SUPPORTIVE Submitted by: Orphanet
• symptomatic form of muscular dystrophy of Duchenne and Becker in female carriers

  Inheritance: XL Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.15747008).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_004006.3. 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
	DMD	NM_004006.3	MANE Select	c.2645A>T	p.Asp882Val	missense	Exon 21 of 79	NP_003997.2
	DMD	NM_004009.3		c.2633A>T	p.Asp878Val	missense	Exon 21 of 79	NP_004000.1
	DMD	NM_000109.4		c.2621A>T	p.Asp874Val	missense	Exon 21 of 79	NP_000100.3

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DMD	ENST00000357033.9	TSL:1 MANE Select	c.2645A>T	p.Asp882Val	missense	Exon 21 of 79	ENSP00000354923.3
	DMD	ENST00000378677.6	TSL:5	c.2633A>T	p.Asp878Val	missense	Exon 21 of 79	ENSP00000367948.2
	DMD	ENST00000420596.5	TSL:5	c.94-119878A>T		intron	N/A	ENSP00000399897.1

Frequencies

GnomAD3 genomes AF: 0.00000907 AC: 1 AN: 110246 Hom.: 0 Cov.: 23

Gnomad AFR AF: 0.0000330

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

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: 0.00

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 9.11e-7 AC: 1 AN: 1097630 Hom.: 0 Cov.: 39 AF XY: 0.00 AC XY: 0 AN XY: 363066

African (AFR) AF: 0.0000379 AC: 1 AN: 26384

American (AMR) AF: 0.00 AC: 0 AN: 35203

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 19374

East Asian (EAS) AF: 0.00 AC: 0 AN: 30187

South Asian (SAS) AF: 0.00 AC: 0 AN: 54132

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 40516

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 4133

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 841630

Other (OTH) AF: 0.00 AC: 0 AN: 46071

GnomAD4 genome AF: 0.00000907 AC: 1 AN: 110246 Hom.: 0 Cov.: 23 AF XY: 0.00 AC XY: 0 AN XY: 32472

African (AFR) AF: 0.0000330 AC: 1 AN: 30290

American (AMR) AF: 0.00 AC: 0 AN: 10290

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 2629

East Asian (EAS) AF: 0.00 AC: 0 AN: 3482

South Asian (SAS) AF: 0.00 AC: 0 AN: 2574

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 5783

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 239

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 52814

Other (OTH) AF: 0.00 AC: 0 AN: 1482

Alfa AF: 0.00 Hom.: 102412

ClinVar

ClinVar submissions as Germline

Significance: Uncertain significance

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	1	-	Cardiovascular phenotype (1)
-	1	-	Duchenne muscular dystrophy (1)
-	1	-	Duchenne muscular dystrophy;C0878544:Cardiomyopathy;C0917713:Becker muscular dystrophy;na:Dystrophin deficiency (1)
-	1	-	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.069
BayesDel_addAF	Benign	-0.42	T
BayesDel_noAF	Benign	-0.83
CADD	Benign	14
DANN	Benign	0.95
DEOGEN2	Benign	0.22	T
FATHMM_MKL	Benign	0.50	N
LIST_S2	Benign	0.054	T
M_CAP	Benign	0.018	T
MetaRNN	Benign	0.16	T
MetaSVM	Benign	-1.0	T
PhyloP100		0.94
PrimateAI	Benign	0.30	T
PROVEAN	Benign	-0.55	N
REVEL	Benign	0.030
Sift	Benign	0.15	T
Sift4G	Uncertain	0.048	D
Polyphen		0.0	B
Vest4		0.12
MutPred		0.46		Loss of disorder (P = 0.0179)
MVP		0.24
MPC		0.016
ClinPred		0.068	T
GERP RS		3.1
gMVP		0.21
Mutation Taster		=98/2	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: rs228406; hg19: chrX-32503194;