7-7373351-A-G

Position:

• chr7-7373351-A-G

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM2 PP3_Strong

The NM_001037763.3(COL28A1):​c.2555T>C​(p.Leu852Ser) 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. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: COL28A1 NM_001037763.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.36

Genes affected

COL28A1 (HGNC:22442): (collagen type XXVIII alpha 1 chain) COL28A1 belongs to a class of collagens containing von Willebrand factor (VWF; MIM 613160) type A (VWFA) domains (Veit et al., 2006 [PubMed 16330543]).[supplied by OMIM, Nov 2010]

LOC107986764 (HGNC:):

ACMG classification

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.962

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
COL28A1	NM_001037763.3	c.2555T>C	p.Leu852Ser	missense_variant	32/35	ENST00000399429.8	NP_001032852.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
COL28A1	ENST00000399429.8	c.2555T>C	p.Leu852Ser	missense_variant	32/35	1	NM_001037763.3	ENSP00000382356.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Aug 28, 2024

The c.2555T>C (p.L852S) alteration is located in exon 32 (coding exon 31) of the COL28A1 gene. This alteration results from a T to C substitution at nucleotide position 2555, causing the leucine (L) at amino acid position 852 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	Pathogenic	0.92
BayesDel_addAF	Pathogenic	0.41	D
BayesDel_noAF	Pathogenic	0.35
CADD	Pathogenic	27
DANN	Uncertain	1.0
DEOGEN2	Benign	0.25	T
Eigen	Uncertain	0.65
Eigen_PC	Uncertain	0.48
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Benign	0.64	T
M_CAP	Uncertain	0.11	D
MetaRNN	Pathogenic	0.96	D
MetaSVM	Uncertain	0.37	D
MutationAssessor	Pathogenic	3.6	H
PrimateAI	Uncertain	0.54	T
PROVEAN	Uncertain	-2.7	D
REVEL	Uncertain	0.63
Sift	Uncertain	0.0020	D
Sift4G	Pathogenic	0.0010	D
Polyphen		1.0	D
Vest4		0.75
MutPred		0.80		Gain of disorder (P = 0.0057);
MVP		0.65
MPC		0.26
ClinPred		0.99	D
GERP RS		4.4
Varity_R		0.77
gMVP		0.77

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: chr7-7412982;