11-74703395-G-C

Variant names:

• chr11-74703395-G-C
• rs146734849
• NM_001278473.3:c.856C>G

Variant summary

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

The NM_001278473.3(CHRDL2):​c.856C>G​(p.Arg286Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 13/22 in silico tools predict 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. R286C) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: CHRDL2 NM_001278473.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.51
• Publications: 0 publications found

Genes affected

CHRDL2 (HGNC:24168): (chordin like 2) This gene encodes a member of the chordin family of proteins. Chordin family members are secreted proteins that share a cysteine-rich pro-collagen repeat domain and associate with members of the transforming growth factor beta superfamily. In vitro assays demonstrate a direct interaction between the encoded protein and human activin A. This gene is expressed in many tissues including osteoblasts, where it is differentially expressed during differentiation. In addition, its expression is upregulated in human osteoarthritic joint cartilage, suggesting a role in adult cartilage regeneration. [provided by RefSeq, Jan 2015]

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=0.36942196).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001278473.3. 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
	CHRDL2	NM_001278473.3	MANE Select	c.856C>G	p.Arg286Gly	missense	Exon 8 of 11	NP_001265402.1	Q6WN34-1
	CHRDL2	NM_015424.6		c.856C>G	p.Arg286Gly	missense	Exon 8 of 12	NP_056239.3
	CHRDL2	NM_001304390.2		c.796C>G	p.Arg266Gly	missense	Exon 7 of 11	NP_001291319.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CHRDL2	ENST00000376332.8	TSL:1 MANE Select	c.856C>G	p.Arg286Gly	missense	Exon 8 of 11	ENSP00000365510.3	Q6WN34-1
	CHRDL2	ENST00000263671.9	TSL:1	c.856C>G	p.Arg286Gly	missense	Exon 8 of 12	ENSP00000263671.5	Q6WN34-2
	CHRDL2	ENST00000528789.1	TSL:1	c.752-428C>G		intron	N/A	ENSP00000431380.1	Q6WN33

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.17
BayesDel_addAF	Benign	-0.021	T
BayesDel_noAF	Benign	-0.27
CADD	Benign	20
DANN	Uncertain	0.99
DEOGEN2	Benign	0.077	T
Eigen	Benign	-0.13
Eigen_PC	Benign	0.015
FATHMM_MKL	Uncertain	0.86	D
LIST_S2	Benign	0.85	T
M_CAP	Benign	0.056	D
MetaRNN	Benign	0.37	T
MetaSVM	Benign	-0.85	T
MutationAssessor	Benign	1.8	L
PhyloP100		1.5
PrimateAI	Benign	0.22	T
PROVEAN	Uncertain	-2.4	N
REVEL	Uncertain	0.32
Sift	Benign	0.28	T
Sift4G	Benign	0.33	T
Polyphen		0.12	B
Vest4		0.43
MutPred		0.53		Loss of stability (P = 0.194)
MVP		0.80
MPC		0.38
ClinPred		0.49	T
GERP RS		3.8
Varity_R		0.21
gMVP		0.53
Mutation Taster		=93/7	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: rs146734849; hg19: chr11-74414440;