rs111033554

Positions:

• chr6-116120326-T-A
• chr6-116120326-T-C

Variant summary

Our verdict is Pathogenic. Variant got 10 ACMG points: 10P and 0B. PM1 PM2 PM5 PP3_Strong

The NM_000493.4(COL10A1):​c.1790A>T​(p.Tyr597Phe) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. Y597H) has been classified as Likely pathogenic.

• Frequency: Genomes: not found (cov: 32)
• Consequence: COL10A1 NM_000493.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 6.17

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 Pathogenic. Variant got 10 ACMG points.

• PM1: In a region_of_interest Nonhelical region (NC1) (size 160) in uniprot entity COAA1_HUMAN there are 9 pathogenic changes around while only 1 benign (90%) in NM_000493.4
• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chrnull-null-null-null is described in UniProt as null.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.964

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
COL10A1	NM_000493.4	c.1790A>T	p.Tyr597Phe	missense_variant	3/3	ENST00000651968.1	NP_000484.2
NT5DC1	NM_152729.3	c.529+2381T>A		intron_variant		ENST00000319550.9	NP_689942.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
COL10A1	ENST00000651968.1	c.1790A>T	p.Tyr597Phe	missense_variant	3/3		NM_000493.4	ENSP00000498802.1
NT5DC1	ENST00000319550.9	c.529+2381T>A		intron_variant		1	NM_152729.3	ENSP00000326858.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 36

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Blueprint Genetics

Dec 02, 2019

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.21
BayesDel_addAF	Pathogenic	0.32	D
BayesDel_noAF	Pathogenic	0.22
CADD	Uncertain	24
DANN	Benign	0.96
DEOGEN2	Pathogenic	0.83	D;D
Eigen	Pathogenic	0.74
Eigen_PC	Uncertain	0.63
FATHMM_MKL	Pathogenic	0.97	D
LIST_S2	Uncertain	0.96	D;.
M_CAP	Pathogenic	0.57	D
MetaRNN	Pathogenic	0.96	D;D
MetaSVM	Pathogenic	1.3	D
MutationAssessor	Pathogenic	4.2	H;H
PrimateAI	Uncertain	0.63	T
PROVEAN	Benign	-2.0	N;N
REVEL	Pathogenic	0.78
Sift	Benign	0.14	T;T
Sift4G	Pathogenic	0.0	D;D
Polyphen		1.0	D;D
Vest4		0.49
MutPred		0.93		Loss of catalytic residue at I596 (P = 0.0588);Loss of catalytic residue at I596 (P = 0.0588);
MVP		0.96
MPC		0.050
ClinPred		0.93	D
GERP RS		4.7
Varity_R		0.82
gMVP		0.53

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

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr6-116441489;