Variant chr8-138594191-C-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_152888.3(COL22A1):c.4441G>T(p.Ala1481Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000141 in 1,417,572 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

COL22A1
NM_152888.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.09

Variant links:

Genes affected

COL22A1 (HGNC:22989): (collagen type XXII alpha 1 chain) This gene encodes member of the collagen family which is thought to contribute to the stabilization of myotendinous junctions and strengthen skeletal muscle attachments during contractile activity. It belongs to the fibril-associated collagens with interrupted triple helix (FACIT) subset of the collagen superfamily, which associate with collagen fibers through their C-terminal collagenous domains and mediate protein-protein interactions through their N-terminal noncollagenous domains. The encoded protein is deposited in the basement membrane zone of the myotendinous junction which is present only at the tissue junctions of muscles, tendons, the heart, articular cartilage, and skin. A knockdown of the orthologous zebrafish gene induces a muscular dystrophy by disruption of the myotendinous junction. [provided by RefSeq, May 2017]

COL22A1 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.35361093).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
COL22A1	NM_152888.3 link	c.4441G>T	p.Ala1481Ser	missense_variant	63/65	ENST00000303045.11	NP_690848.1	Q8NFW1-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
COL22A1	ENST00000303045.11 link	c.4441G>T	p.Ala1481Ser	missense_variant	63/65	1	NM_152888.3	ENSP00000303153.6		Q8NFW1-1
COL22A1	ENST00000341807.8 link	n.2126G>T		non_coding_transcript_exon_variant	37/39	1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000486

AC:

AN:

205768

Hom.:

AF XY:

0.00

AC XY:

AN XY:

112918

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.000119

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000141

AC:

AN:

1417572

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

705180

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.0000407

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000171

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 10, 2024

The c.4441G>T (p.A1481S) alteration is located in exon 63 (coding exon 62) of the COL22A1 gene. This alteration results from a G to T substitution at nucleotide position 4441, causing the alanine (A) at amino acid position 1481 to be replaced by a serine (S). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.079

BayesDel_addAF

Uncertain

0.074

BayesDel_noAF

Benign

-0.13

CADD

Benign

DANN

Uncertain

0.98

DEOGEN2

Benign

0.0027

T;.

Eigen

Uncertain

0.47

Eigen_PC

Uncertain

0.46

FATHMM_MKL

Uncertain

0.95

LIST_S2

Benign

0.69

T;T

M_CAP

Benign

0.064

MetaRNN

Benign

0.35

T;T

MetaSVM

Uncertain

0.47

MutationAssessor

Benign

1.6

L;.

PrimateAI

Benign

0.43

PROVEAN

Benign

-0.70

N;.

REVEL

Uncertain

0.31

Sift

Benign

0.13

T;.

Sift4G

Benign

0.066

T;T

Polyphen

1.0

D;.

Vest4

0.34

MutPred

0.23

Gain of phosphorylation at A1481 (P = 0.0458);.;

MVP

0.58

MPC

0.077

ClinPred

0.41

GERP RS

5.9

Varity_R

0.089

gMVP

0.13

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over