1-33959818-C-T

Variant names:

• chr1-33959818-C-T
• rs1325251
• NM_001281956.2:c.518-23864G>A

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BP4_Strong

The NM_001281956.2(CSMD2):​c.518-23864G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00301 in 152,302 control chromosomes in the GnomAD database, including 1 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 0.0030 (1 hom., cov: 33)
• Consequence: CSMD2 NM_001281956.2 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.09
• Publications: 1 publications found

Genes affected

CSMD2 (HGNC:19290): (CUB and Sushi multiple domains 2) The protein encoded by this gene is thought to be involved in the control of complement cascade of the immune system. Defects in this gene have been associated with schizophrenia. This gene may act as a tumor suppressor for colorectal cancer. [provided by RefSeq, Jan 2020]

ACMG classification

Our verdict: Likely_benign. The variant received -4 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.8).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001281956.2. 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
	CSMD2	NM_001281956.2	MANE Select	c.518-23864G>A		intron	N/A	NP_001268885.1
	CSMD2	NM_052896.5		c.398-23864G>A		intron	N/A	NP_443128.2

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CSMD2	ENST00000373381.9	TSL:1 MANE Select	c.518-23864G>A		intron	N/A	ENSP00000362479.4
	CSMD2	ENST00000373388.7	TSL:1	c.398-23864G>A		intron	N/A	ENSP00000362486.3
	CSMD2	ENST00000619121.4	TSL:5	c.398-23864G>A		intron	N/A	ENSP00000483463.1

Frequencies

GnomAD3 genomes AF: 0.00301 AC: 458 AN: 152184 Hom.: 1 Cov.: 33

Gnomad AFR AF: 0.000941

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00209

Gnomad ASJ AF: 0.00115

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000415

Gnomad FIN AF: 0.000471

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00547

Gnomad OTH AF: 0.00191

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

GnomAD4 genome AF: 0.00301 AC: 458 AN: 152302 Hom.: 1 Cov.: 33 AF XY: 0.00255 AC XY: 190 AN XY: 74478

African (AFR) AF: 0.000938 AC: 39 AN: 41584

American (AMR) AF: 0.00209 AC: 32 AN: 15298

Ashkenazi Jewish (ASJ) AF: 0.00115 AC: 4 AN: 3468

East Asian (EAS) AF: 0.00 AC: 0 AN: 5182

South Asian (SAS) AF: 0.000415 AC: 2 AN: 4816

European-Finnish (FIN) AF: 0.000471 AC: 5 AN: 10618

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

European-Non Finnish (NFE) AF: 0.00547 AC: 372 AN: 68018

Other (OTH) AF: 0.00189 AC: 4 AN: 2112

Alfa AF: 0.00375 Hom.: 0

Bravo AF: 0.00334

Asia WGS AF: 0.000577 AC: 2 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.80
CADD	Benign	7.9
DANN	Benign	0.60
PhyloP100		1.1

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: rs1325251; hg19: chr1-34425419;