rs2243370

Positions:

• chr6-116121824-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The NM_000493.4(COL10A1):​c.292G>A​(p.Gly98Arg) 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 pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another nucleotide change resulting in same amino acid change has been previously reported as Likely benignin UniProt.

• Frequency: Genomes: not found (cov: 32)
• Consequence: COL10A1 NM_000493.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 7.71

Genes affected

COL10A1 (HGNC:2185): (collagen type X alpha 1 chain) This gene encodes the alpha chain of type X collagen, a short chain collagen expressed by hypertrophic chondrocytes during endochondral ossification. Unlike type VIII collagen, the other short chain collagen, type X collagen is a homotrimer. Mutations in this gene are associated with Schmid type metaphyseal chondrodysplasia (SMCD) and Japanese type spondylometaphyseal dysplasia (SMD). [provided by RefSeq, Jul 2008]

NT5DC1 (HGNC:21556): (5'-nucleotidase domain containing 1) While the exact function of the protein encoded by this gene is not known, it belongs to the 5'(3')-deoxyribonucleotidase family. [provided by RefSeq, May 2010]

ACMG classification

Verdict is Uncertain_significance. Variant got 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.866

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
COL10A1	NM_000493.4	c.292G>A	p.Gly98Arg	missense_variant	3/3	ENST00000651968.1	NP_000484.2
NT5DC1	NM_152729.3	c.529+3879C>T		intron_variant		ENST00000319550.9	NP_689942.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
COL10A1	ENST00000651968.1	c.292G>A	p.Gly98Arg	missense_variant	3/3		NM_000493.4	ENSP00000498802.1
NT5DC1	ENST00000319550.9	c.529+3879C>T		intron_variant		1	NM_152729.3	ENSP00000326858.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 36

GnomAD4 genome Cov.: 32

Alfa AF: 0.0000466 Hom.: 0

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.90
BayesDel_addAF	Pathogenic	0.60	D
BayesDel_noAF	Pathogenic	0.62
CADD	Uncertain	25
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.84	D;D;.
Eigen	Pathogenic	0.84
Eigen_PC	Pathogenic	0.79
FATHMM_MKL	Uncertain	0.97	D
LIST_S2	Pathogenic	0.98	D;.;D
M_CAP	Uncertain	0.20	D
MetaRNN	Pathogenic	0.87	D;D;D
MetaSVM	Uncertain	0.79	D
MutationAssessor	Pathogenic	3.6	H;H;.
PrimateAI	Pathogenic	0.89	D
PROVEAN	Pathogenic	-6.8	D;D;D
REVEL	Pathogenic	0.78
Sift	Pathogenic	0.0	D;D;D
Sift4G	Pathogenic	0.0	D;D;.
Polyphen		1.0	D;D;.
Vest4		0.98
MutPred		0.36		Gain of solvent accessibility (P = 1e-04);Gain of solvent accessibility (P = 1e-04);Gain of solvent accessibility (P = 1e-04);
MVP		0.99
MPC		0.0078
ClinPred		1.0	D
GERP RS		5.5
Varity_R		0.91
gMVP		0.62

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		Details are displayed if max score is > 0.2

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

Publications

LitVar

Other links and lift over

dbSNP: rs2243370; hg19: chr6-116442987;