rs200595318

chr9-134728821-G-Achr9-134728821-G-C

Variant summary

Our verdict is Benign. Variant got -9 ACMG points: 0P and 9B. BP4_Strong BP6 BS2

The NM_000093.5(COL5A1):c.924+14G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00039 in 1,613,822 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

• Frequency:
  • Genomes: 𝑓 0.00037 (0 hom., cov: 33)
  • Exomes 𝑓: 0.00039 (1 hom.)
• Consequence: COL5A1 NM_000093.5 intron
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1 B:5
• Conservation: PhyloP100: -1.17

Genes affected

COL5A1 (HGNC:2209): (collagen type V alpha 1 chain) This gene encodes an alpha chain for one of the low abundance fibrillar collagens. Fibrillar collagen molecules are trimers that can be composed of one or more types of alpha chains. Type V collagen is found in tissues containing type I collagen and appears to regulate the assembly of heterotypic fibers composed of both type I and type V collagen. This gene product is closely related to type XI collagen and it is possible that the collagen chains of types V and XI constitute a single collagen type with tissue-specific chain combinations. The encoded procollagen protein occurs commonly as the heterotrimer pro-alpha1(V)-pro-alpha1(V)-pro-alpha2(V). Mutations in this gene are associated with Ehlers-Danlos syndrome, types I and II. Alternative splicing of this gene results in multiple transcript variants. [provided by RefSeq, May 2013]

ACMG classification

Verdict is Benign. Variant got -9 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.9).
• BP6: Variant 9-134728821-G-A is Benign according to our data. Variant chr9-134728821-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 136925.We mark this variant Likely_benign, oryginal submissions are: {Benign=3, Uncertain_significance=1, Likely_benign=2}.
• BS2: High AC in GnomAd at 57 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
COL5A1	NM_000093.5	c.924+14G>A		intron_variant		ENST00000371817.8
COL5A1	NM_001278074.1	c.924+14G>A		intron_variant
COL5A1	XM_017014266.3	c.924+14G>A		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
COL5A1	ENST00000371817.8	c.924+14G>A		intron_variant		1	NM_000093.5	P4
COL5A1	ENST00000371820.4	c.924+14G>A		intron_variant		2		A2

Frequencies

GnomAD3 genomes AF: 0.000374 AC: 57 AN: 152206 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.000145

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000785

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.000470

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000500

Gnomad OTH AF: 0.00

GnomAD3 exomes AF: 0.000361 AC: 90 AN: 249336 Hom.: 1 AF XY: 0.000341 AC XY: 46 AN XY: 134952

Gnomad AFR exome AF: 0.0000618

Gnomad AMR exome AF: 0.000202

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.000604

Gnomad NFE exome AF: 0.000607

Gnomad OTH exome AF: 0.000163

GnomAD4 exome AF: 0.000392 AC: 573 AN: 1461616 Hom.: 1 Cov.: 34 AF XY: 0.000403 AC XY: 293 AN XY: 727096

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.000246

Gnomad4 ASJ exome AF: 0.0000765

Gnomad4 EAS exome AF: 0.0000252

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.000507

Gnomad4 NFE exome AF: 0.000465

Gnomad4 OTH exome AF: 0.000248

GnomAD4 genome AF: 0.000374 AC: 57 AN: 152206 Hom.: 0 Cov.: 33 AF XY: 0.000498 AC XY: 37 AN XY: 74354

Gnomad4 AFR AF: 0.000145

Gnomad4 AMR AF: 0.000785

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.000470

Gnomad4 NFE AF: 0.000500

Gnomad4 OTH AF: 0.00

Alfa AF: 0.000215 Hom.: 0

Bravo AF: 0.000257

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1 Benign:5

Revision: criteria provided, conflicting classifications

Submissions by phenotype

not specified Benign:3

Benign, criteria provided, single submitter	clinical testing	Women's Health and Genetics/Laboratory Corporation of America, LabCorp	Jul 21, 2023	- -
Likely benign, criteria provided, single submitter	clinical testing	PreventionGenetics, part of Exact Sciences	-	- -
Benign, criteria provided, single submitter	clinical testing	GeneDx	Jun 09, 2014	This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

Ehlers-Danlos syndrome type 7A Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jun 14, 2016

- -

Ehlers-Danlos syndrome, classic type Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as likely benign is not then subjected to further curation. The score for this variant resulted in a classification of likely benign for this disease. -

Ehlers-Danlos syndrome, classic type, 1 Benign:1

Benign, criteria provided, single submitter

clinical testing

Invitae

Jan 12, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.90
Cadd	Benign	0.79
Dann	Benign	0.31

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

LitVar

Other links and lift over

dbSNP: rs200595318; hg19: chr9-137620667;