rs2837545

Variant names:

• chr21-40273557-A-C
• rs2837545
• NM_001389.5:c.2356+2540T>G

Your query was ambiguous. Multiple possible variants found:

• chr21-40273557-A-C
• chr21-40273557-A-G

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_001389.5(DSCAM):​c.2356+2540T>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.335 in 151,952 control chromosomes in the GnomAD database, including 8,751 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 0.33 (8751 hom., cov: 32)
• Consequence: DSCAM NM_001389.5 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.92
• Publications: 3 publications found

Genes affected

DSCAM (HGNC:3039): (DS cell adhesion molecule) This gene is a member of the immunoglobulin superfamily of cell adhesion molecules (Ig-CAMs), and is involved in human central and peripheral nervous system development. This gene is a candidate for Down syndrome and congenital heart disease (DSCHD). A gene encoding a similar Ig-CAM protein is located on chromosome 11. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene. [provided by RefSeq, Oct 2012]

DSCAM Gene-Disease associations (from GenCC):

• autism spectrum disorder

  Inheritance: AD Classification: MODERATE Submitted by: Ambry Genetics

ACMG classification

Our verdict: Benign. The variant received -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-1.01).
• BA1: GnomAd4 highest subpopulation (SAS) allele frequency at 95% confidence interval = 0.365 is higher than 0.05.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001389.5. 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
	DSCAM	NM_001389.5	MANE Select	c.2356+2540T>G		intron	N/A	NP_001380.2
	DSCAM	NM_001271534.3		c.2356+2540T>G		intron	N/A	NP_001258463.1
	DSCAM	NR_073202.3		n.2853+2540T>G		intron	N/A

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DSCAM	ENST00000400454.6	TSL:1 MANE Select	c.2356+2540T>G		intron	N/A	ENSP00000383303.1	O60469-1
	DSCAM	ENST00000404019.2	TSL:1	c.1612+2540T>G		intron	N/A	ENSP00000385342.2	Q8WY19
	DSCAM	ENST00000617870.4	TSL:5	c.1861+2540T>G		intron	N/A	ENSP00000478698.1	A0A087WUI7

Frequencies

GnomAD3 genomes AF: 0.335 AC: 50789 AN: 151832 Hom.: 8739 Cov.: 32

Gnomad AFR AF: 0.289

Gnomad AMI AF: 0.391

Gnomad AMR AF: 0.314

Gnomad ASJ AF: 0.323

Gnomad EAS AF: 0.153

Gnomad SAS AF: 0.371

Gnomad FIN AF: 0.392

Gnomad MID AF: 0.280

Gnomad NFE AF: 0.369

Gnomad OTH AF: 0.344

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.335 AC: 50843 AN: 151952 Hom.: 8751 Cov.: 32 AF XY: 0.337 AC XY: 25033 AN XY: 74240

African (AFR) AF: 0.289 AC: 11955 AN: 41424

American (AMR) AF: 0.315 AC: 4805 AN: 15266

Ashkenazi Jewish (ASJ) AF: 0.323 AC: 1121 AN: 3470

East Asian (EAS) AF: 0.153 AC: 790 AN: 5160

South Asian (SAS) AF: 0.372 AC: 1788 AN: 4812

European-Finnish (FIN) AF: 0.392 AC: 4136 AN: 10558

Middle Eastern (MID) AF: 0.272 AC: 80 AN: 294

European-Non Finnish (NFE) AF: 0.369 AC: 25085 AN: 67948

Other (OTH) AF: 0.345 AC: 727 AN: 2110

Alfa AF: 0.351 Hom.: 15677

Bravo AF: 0.323

Asia WGS AF: 0.245 AC: 852 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-1.0
CADD	Benign	0.042
DANN	Benign	0.41
PhyloP100		-1.9
Mutation Taster		=100/0	polymorphism (auto)

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: rs2837545; hg19: chr21-41645484; COSMIC: COSV68034954;