NM_003076.5:c.423A>G

Variant names:

• chr12-50086770-A-G
• rs2307083
• NM_003076.5:c.423A>G

Variant summary

Our verdict is Benign. The variant received -13 ACMG points: 0P and 13B. BP4_Strong BP7 BS1 BS2

The NM_003076.5(SMARCD1):​c.423A>G​(p.Val141Val) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000128 in 1,614,128 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: 𝑓 0.00012 (0 hom., cov: 32)
  • Exomes 𝑓: 0.00013 (2 hom.)
• Consequence: SMARCD1 NM_003076.5 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.164
• Publications: 2 publications found

Genes affected

SMARCD1 (HGNC:11106): (SWI/SNF related, matrix associated, actin dependent regulator of chromatin, subfamily d, member 1) The protein encoded by this gene is a member of the SWI/SNF family of proteins, whose members display helicase and ATPase activities and which are thought to regulate transcription of certain genes by altering the chromatin structure around those genes. The encoded protein is part of the large ATP-dependent chromatin remodeling complex SNF/SWI and has sequence similarity to the yeast Swp73 protein. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

SMARCD1 Gene-Disease associations (from GenCC):

• Coffin-Siris syndrome 11

  Inheritance: AD Classification: STRONG, MODERATE Submitted by: G2P, Labcorp Genetics (formerly Invitae), Ambry Genetics
• Coffin-Siris syndrome

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Benign. The variant received -13 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.54).
• BP7: Synonymous conserved (PhyloP=0.164 with no splicing effect.
• BS1: Variant frequency is greater than expected in population eas. GnomAd4 allele frequency = 0.000125 (19/152266) while in subpopulation EAS AF = 0.00366 (19/5188). AF 95% confidence interval is 0.0024. There are 0 homozygotes in GnomAd4. There are 12 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.
• BS2: High AC in GnomAd4 at 19 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_003076.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SMARCD1	NM_003076.5	MANE Select	c.423A>G	p.Val141Val	synonymous	Exon 4 of 13	NP_003067.3
	SMARCD1	NM_139071.3		c.423A>G	p.Val141Val	synonymous	Exon 4 of 12	NP_620710.2

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SMARCD1	ENST00000394963.9	TSL:1 MANE Select	c.423A>G	p.Val141Val	synonymous	Exon 4 of 13	ENSP00000378414.4
	SMARCD1	ENST00000381513.8	TSL:1	c.423A>G	p.Val141Val	synonymous	Exon 4 of 12	ENSP00000370924.4
	SMARCD1	ENST00000547247.5	TSL:1	n.451A>G		non_coding_transcript_exon	Exon 4 of 6

Frequencies

GnomAD3 genomes AF: 0.000125 AC: 19 AN: 152148 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00365

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

GnomAD2 exomes AF: 0.000461 AC: 116 AN: 251458 AF XY: 0.000478

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00620

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.000163

GnomAD4 exome AF: 0.000128 AC: 187 AN: 1461862 Hom.: 2 Cov.: 32 AF XY: 0.000139 AC XY: 101 AN XY: 727230

African (AFR) AF: 0.00 AC: 0 AN: 33478

American (AMR) AF: 0.0000224 AC: 1 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00436 AC: 173 AN: 39700

South Asian (SAS) AF: 0.0000116 AC: 1 AN: 86256

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53420

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

European-Non Finnish (NFE) AF: 0.00000180 AC: 2 AN: 1111984

Other (OTH) AF: 0.000166 AC: 10 AN: 60396

GnomAD4 genome AF: 0.000125 AC: 19 AN: 152266 Hom.: 0 Cov.: 32 AF XY: 0.000161 AC XY: 12 AN XY: 74450

African (AFR) AF: 0.00 AC: 0 AN: 41536

American (AMR) AF: 0.00 AC: 0 AN: 15304

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3468

East Asian (EAS) AF: 0.00366 AC: 19 AN: 5188

South Asian (SAS) AF: 0.00 AC: 0 AN: 4816

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10610

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68024

Other (OTH) AF: 0.00 AC: 0 AN: 2114

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.000227

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.54
CADD	Benign	6.5
DANN	Benign	0.73
PhyloP100		0.16
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Mutation Taster		=89/11	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: rs2307083; hg19: chr12-50480553;