9-134803007-G-C

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_000093.5(COL5A1):​c.3114+12G>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000149 in 1,580,232 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.00015 ( 0 hom., cov: 33)
Exomes 𝑓: 0.00015 ( 0 hom. )

Consequence

COL5A1
NM_000093.5 intron

Scores

2

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:6

Conservation

PhyloP100: -0.474
Variant links:
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]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -20 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.77).
BP6
Variant 9-134803007-G-C is Benign according to our data. Variant chr9-134803007-G-C is described in ClinVar as [Likely_benign]. Clinvar id is 136878.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr9-134803007-G-C is described in Lovd as [Likely_benign].
BS1
Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.000151 (23/152178) while in subpopulation NFE AF= 0.000323 (22/68034). AF 95% confidence interval is 0.000218. There are 0 homozygotes in gnomad4. There are 11 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.
BS2
High AC in GnomAd4 at 23 AD gene.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
COL5A1NM_000093.5 linkc.3114+12G>C intron_variant Intron 39 of 65 ENST00000371817.8 NP_000084.3 P20908-1A0A024R8E5B2ZZ86Q59EE7
COL5A1NM_001278074.1 linkc.3114+12G>C intron_variant Intron 39 of 65 NP_001265003.1 B2ZZ86Q59EE7
COL5A1XM_017014266.3 linkc.3114+12G>C intron_variant Intron 39 of 64 XP_016869755.1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
COL5A1ENST00000371817.8 linkc.3114+12G>C intron_variant Intron 39 of 65 1 NM_000093.5 ENSP00000360882.3 P20908-1
COL5A1ENST00000371820.4 linkc.3114+12G>C intron_variant Intron 39 of 65 2 ENSP00000360885.4 P20908-2H7BY82

Frequencies

GnomAD3 genomes
AF:
0.000151
AC:
23
AN:
152178
Hom.:
0
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.0000241
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
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:
0.000323
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.000132
AC:
26
AN:
197082
Hom.:
0
AF XY:
0.000161
AC XY:
17
AN XY:
105858
show subpopulations
Gnomad AFR exome
AF:
0.000166
Gnomad AMR exome
AF:
0.00
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:
0.000284
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.000148
AC:
212
AN:
1428054
Hom.:
0
Cov.:
29
AF XY:
0.000155
AC XY:
110
AN XY:
708184
show subpopulations
Gnomad4 AFR exome
AF:
0.000121
Gnomad4 AMR exome
AF:
0.0000252
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.000188
Gnomad4 OTH exome
AF:
0.0000338
GnomAD4 genome
AF:
0.000151
AC:
23
AN:
152178
Hom.:
0
Cov.:
33
AF XY:
0.000148
AC XY:
11
AN XY:
74346
show subpopulations
Gnomad4 AFR
AF:
0.0000241
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.000323
Gnomad4 OTH
AF:
0.00
Alfa
AF:
0.000323
Hom.:
0
Bravo
AF:
0.000151

ClinVar

Significance: Benign/Likely benign
Submissions summary: Benign:6
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not specified Benign:3
-
PreventionGenetics, part of Exact Sciences
Significance: Likely benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Mar 01, 2014
GeneDx
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

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. -

Jan 22, 2024
Women's Health and Genetics/Laboratory Corporation of America, LabCorp
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

Variant summary: COL5A1 c.3114+12G>C alters a non-conserved nucleotide located at a position not widely known to affect splicing. Consensus agreement among computation tools predict no significant impact on normal splicing. However, these predictions have yet to be confirmed by functional studies. The variant allele was found at a frequency of 0.00013 in 197082 control chromosomes, predominantly at a frequency of 0.00028 within the Non-Finnish European subpopulation in the gnomAD database. The observed variant frequency within Non-Finnish European control individuals in the gnomAD database is approximately 9 fold of the estimated maximal expected allele frequency for a pathogenic variant in COL5A1 causing Ehlers-Danlos Syndrome phenotype (3.1e-05), strongly suggesting that the variant is a benign polymorphism found primarily in populations of Non-Finnish European origin. To our knowledge, no occurrence of c.3114+12G>C in individuals affected with Ehlers-Danlos Syndrome and no experimental evidence demonstrating its impact on protein function have been reported. ClinVar contains an entry for this variant (Variation ID: 136878). Based on the evidence outlined above, the variant was classified as benign. -

Ehlers-Danlos syndrome, classic type, 1 Benign:2
Jan 06, 2025
Labcorp Genetics (formerly Invitae), Labcorp
Significance: Likely benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Mar 15, 2022
Genome-Nilou Lab
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Fibromuscular dysplasia, multifocal Benign:1
Mar 15, 2022
Genome-Nilou Lab
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.77
CADD
Benign
7.6
DANN
Benign
0.61

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

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

Other links and lift over

dbSNP: rs528913410; hg19: chr9-137694853; API