8-112224868-G-C

Variant names:

• chr8-112224868-G-C
• rs747534256
• NM_198123.2:c.11027C>G

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2 BP4

The NM_198123.2(CSMD3):​c.11027C>G​(p.Ala3676Gly) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts 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. A3676V) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: CSMD3 NM_198123.2 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 8.10
• Publications: 0 publications found

Genes affected

CSMD3 (HGNC:19291): (CUB and Sushi multiple domains 3) Predicted to be involved in regulation of dendrite development. Predicted to be located in plasma membrane. [provided by Alliance of Genome Resources, Apr 2022]

CSMD3 Gene-Disease associations (from GenCC):

• complex neurodevelopmental disorder

  Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

ACMG classification

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.39826244).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_198123.2. 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
	CSMD3	NM_198123.2	MANE Select	c.11027C>G	p.Ala3676Gly	missense	Exon 71 of 71	NP_937756.1	Q7Z407-1
	CSMD3	NM_198124.2		c.10907C>G	p.Ala3636Gly	missense	Exon 72 of 72	NP_937757.1	Q7Z407-2
	CSMD3	NM_052900.3		c.10520C>G	p.Ala3507Gly	missense	Exon 69 of 69	NP_443132.3

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CSMD3	ENST00000297405.10	TSL:1 MANE Select	c.11027C>G	p.Ala3676Gly	missense	Exon 71 of 71	ENSP00000297405.5	Q7Z407-1
	CSMD3	ENST00000343508.7	TSL:1	c.10907C>G	p.Ala3636Gly	missense	Exon 72 of 72	ENSP00000345799.3	Q7Z407-2
	CSMD3	ENST00000455883.2	TSL:1	c.10520C>G	p.Ala3507Gly	missense	Exon 69 of 69	ENSP00000412263.2	Q7Z407-3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.50
BayesDel_addAF	Benign	-0.028	T
BayesDel_noAF	Benign	-0.28
CADD	Pathogenic	26
DANN	Uncertain	1.0
DEOGEN2	Benign	0.046	T
Eigen	Uncertain	0.66
Eigen_PC	Pathogenic	0.72
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.97	D
M_CAP	Benign	0.0041	T
MetaRNN	Benign	0.40	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.34	N
PhyloP100		8.1
PrimateAI	Uncertain	0.79	T
PROVEAN	Benign	-2.2	N
REVEL	Benign	0.18
Sift	Uncertain	0.012	D
Sift4G	Uncertain	0.0060	D
Polyphen		0.93	P
Vest4		0.39
MutPred		0.13		Loss of stability (P = 0.0658)
MVP		0.24
MPC		0.34
ClinPred		0.88	D
GERP RS		5.8
Varity_R		0.20
gMVP		0.55
Mutation Taster		=46/54	disease causing

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: rs747534256; hg19: chr8-113237097;