7-7373317-C-A

Variant names:

• chr7-7373317-C-A
• rs773423270
• NM_001037763.3:c.2589G>T

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001037763.3(COL28A1):​c.2589G>T​(p.Leu863Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,886 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/22 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 nucleotide change resulting in the same amino acid substitution has been previously reported as Uncertain significance in ClinVar.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: COL28A1 NM_001037763.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.616
• Publications: 0 publications found

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

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.19981298).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001037763.3. 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
	COL28A1	NM_001037763.3	MANE Select	c.2589G>T	p.Leu863Phe	missense	Exon 32 of 35	NP_001032852.2	Q2UY09-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	COL28A1	ENST00000399429.8	TSL:1 MANE Select	c.2589G>T	p.Leu863Phe	missense	Exon 32 of 35	ENSP00000382356.3	Q2UY09-1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.00000401 AC: 1 AN: 249576 AF XY: 0.00000739

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS 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: 0.00000137 AC: 2 AN: 1461886 Hom.: 0 Cov.: 32 AF XY: 0.00000138 AC XY: 1 AN XY: 727246

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.0000232 AC: 2 AN: 86256

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53420

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1112006

Other (OTH) AF: 0.00 AC: 0 AN: 60396

GnomAD4 genome Cov.: 32

ExAC AF: 0.00000827 AC: 1

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.083
BayesDel_addAF	Benign	-0.17	T
BayesDel_noAF	Benign	-0.38
CADD	Benign	22
DANN	Uncertain	1.0
DEOGEN2	Benign	0.062	T
Eigen	Benign	-0.16
Eigen_PC	Benign	-0.19
FATHMM_MKL	Benign	0.23	N
LIST_S2	Benign	0.74	T
M_CAP	Benign	0.016	T
MetaRNN	Benign	0.20	T
MetaSVM	Benign	-0.59	T
MutationAssessor	Benign	1.8	L
PhyloP100		0.62
PrimateAI	Benign	0.25	T
PROVEAN	Benign	-0.99	N
REVEL	Uncertain	0.31
Sift	Benign	0.051	T
Sift4G	Uncertain	0.052	T
Polyphen		0.85	P
Vest4		0.27
MutPred		0.53		Gain of methylation at K862 (P = 0.0342)
MVP		0.47
MPC		0.082
ClinPred		0.55	D
GERP RS		2.4
Varity_R		0.13
gMVP		0.26
Mutation Taster		=85/15	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: rs773423270; hg19: chr7-7412948;