X-32463465-T-C

Variant names:

• chrX-32463465-T-C
• NM_004006.3:c.3406A>G

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_004006.3(DMD):​c.3406A>G​(p.Thr1136Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000914 in 1,094,594 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. 13/18 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. T1136S) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 23)
  • Exomes 𝑓: 9.1e-7 (0 hom. 0 hem.)
• Consequence: DMD NM_004006.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.140

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.08323157).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DMD	NM_004006.3	c.3406A>G	p.Thr1136Ala	missense_variant	Exon 25 of 79	ENST00000357033.9	NP_003997.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DMD	ENST00000357033.9	c.3406A>G	p.Thr1136Ala	missense_variant	Exon 25 of 79	1	NM_004006.3	ENSP00000354923.3

Frequencies

GnomAD3 genomes Cov.: 23

GnomAD4 exome AF: 9.14e-7 AC: 1 AN: 1094594 Hom.: 0 Cov.: 29 AF XY: 0.00 AC XY: 0 AN XY: 360410

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000119

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 23

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.064
BayesDel_addAF	Benign	-0.51	T
BayesDel_noAF	Benign	-0.97
CADD	Benign	0.043
DANN	Benign	0.49
DEOGEN2	Benign	0.23	.;T;.;.
FATHMM_MKL	Benign	0.038	N
LIST_S2	Benign	0.23	T;.;T;T
M_CAP	Benign	0.028	D
MetaRNN	Benign	0.083	T;T;T;T
MetaSVM	Benign	-0.94	T
PrimateAI	Benign	0.28	T
PROVEAN	Benign	-0.76	.;N;.;N
REVEL	Benign	0.072
Sift	Benign	0.87	.;T;.;T
Sift4G	Benign	1.0	T;T;T;T
Polyphen		0.0	.;B;.;.
Vest4		0.035
MutPred		0.33		.;.;Loss of ubiquitination at K1132 (P = 0.1016);Loss of ubiquitination at K1132 (P = 0.1016);
MVP		0.29
MPC		0.016
ClinPred		0.028	T
GERP RS		-0.42
gMVP		0.072

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

No publications associated with this variant yet.

Other links and lift over

hg19: chrX-32481582; COSMIC: COSV63739040;