DSCAM p.Arg1796Arg

Variant names:

• chr21-40042668-C-C
• NM_001389.5:c.

Your query was ambiguous. Multiple possible variants found:

• chr21-40042669--
• chr21-40042669-T-A
• chr21-40042669-T-G
• chr21-40042669-T-C
• chr21-40042671-G-T
• chr21-40042669-TCG-CCT

Variant summary

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

The NM_001389.5(DSCAM):​c. variant causes a exon region change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 0)
• Consequence: DSCAM NM_001389.5 exon_region
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.122
• Publications: 0 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: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

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.		exon_region	Exon 32 of 33	NP_001380.2
	DSCAM	NM_001271534.3		c.		exon_region	Exon 32 of 33	NP_001258463.1
	DSCAM	NR_073202.3		n.		exon_region	Exon 32 of 33

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DSCAM	ENST00000400454.6	TSL:1 MANE Select	c.		exon_region	Exon 32 of 33	ENSP00000383303.1	O60469-1
	DSCAM	ENST00000404019.2	TSL:1	c.		exon_region	Exon 28 of 29	ENSP00000385342.2	Q8WY19
	DSCAM	ENST00000617870.4	TSL:5	c.		exon_region	Exon 29 of 30	ENSP00000478698.1	A0A087WUI7

Frequencies

GnomAD3 genomes Cov.: 0

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 0

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		-0.12

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

hg19: chr21-41414595;