rs73664144

chr9-134796356-C-Achr9-134796356-C-Gchr9-134796356-C-T

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_Strong BP6_Very_Strong BS1 BS2

The NM_000093.5(COL5A1):c.2800-18C>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00162 in 1,613,640 control chromosomes in the GnomAD database, including 48 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

• Frequency:
  • Genomes: 𝑓 0.0086 (29 hom., cov: 33)
  • Exomes 𝑓: 0.00090 (19 hom.)
• Consequence: COL5A1 NM_000093.5 intron
• Clinical Significance: Benign criteria provided, multiple submitters, no conflicts B:7
• 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 -20 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.86).
• BP6: Variant 9-134796356-C-A is Benign according to our data. Variant chr9-134796356-C-A is described in ClinVar as [Benign]. Clinvar id is 136874.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BS1: Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00859 (1309/152300) while in subpopulation AFR AF= 0.0294 (1222/41548). AF 95% confidence interval is 0.028. There are 29 homozygotes in gnomad4. There are 615 alleles in male gnomad4 subpopulation. This position pass quality control queck.
• BS2: High AC in GnomAd at 1308 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
COL5A1	NM_000093.5	c.2800-18C>A		intron_variant		ENST00000371817.8
COL5A1	NM_001278074.1	c.2800-18C>A		intron_variant
COL5A1	XM_017014266.3	c.2800-18C>A		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
COL5A1	ENST00000371817.8	c.2800-18C>A		intron_variant		1	NM_000093.5	P4
COL5A1	ENST00000371820.4	c.2800-18C>A		intron_variant		2		A2

Frequencies

GnomAD3 genomes AF: 0.00859 AC: 1308 AN: 152182 Hom.: 28 Cov.: 33

Gnomad AFR AF: 0.0295

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00373

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000118

Gnomad OTH AF: 0.0105

GnomAD3 exomes AF: 0.00240 AC: 604 AN: 251438 Hom.: 10 AF XY: 0.00167 AC XY: 227 AN XY: 135912

Gnomad AFR exome AF: 0.0327

Gnomad AMR exome AF: 0.00147

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.000123

Gnomad OTH exome AF: 0.00130

GnomAD4 exome AF: 0.000897 AC: 1311 AN: 1461340 Hom.: 19 Cov.: 32 AF XY: 0.000721 AC XY: 524 AN XY: 727044

Gnomad4 AFR exome AF: 0.0320

Gnomad4 AMR exome AF: 0.00152

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000116

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000540

Gnomad4 OTH exome AF: 0.00177

GnomAD4 genome AF: 0.00859 AC: 1309 AN: 152300 Hom.: 29 Cov.: 33 AF XY: 0.00826 AC XY: 615 AN XY: 74476

Gnomad4 AFR AF: 0.0294

Gnomad4 AMR AF: 0.00372

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000118

Gnomad4 OTH AF: 0.0104

Alfa AF: 0.000358 Hom.: 0

Bravo AF: 0.00975

Asia WGS AF: 0.00231 AC: 8 AN: 3478

ClinVar

Significance: Benign

Submissions summary: Benign:7

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not specified Benign:3

Benign, criteria provided, single submitter	clinical testing	PreventionGenetics, part of Exact Sciences	-	- -
Benign, criteria provided, single submitter	clinical testing	Women's Health and Genetics/Laboratory Corporation of America, LabCorp	Jul 21, 2023	- -
Benign, criteria provided, single submitter	clinical testing	GeneDx	Mar 26, 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, classic type, 1 Benign:2

Benign, criteria provided, single submitter	clinical testing	Genome-Nilou Lab	Mar 15, 2022	- -
Benign, criteria provided, single submitter	clinical testing	Invitae	Jan 29, 2024	- -

Fibromuscular dysplasia, multifocal Benign:1

Benign, criteria provided, single submitter

clinical testing

Genome-Nilou Lab

Mar 15, 2022

- -

not provided Benign:1

Benign, criteria provided, single submitter

clinical testing

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Dec 30, 2020

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.86
Cadd	Benign	1.1
Dann	Benign	0.50

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: rs73664144; hg19: chr9-137688202;