rs550497696

Variant names:

Variant summary

Our verdict is Benign. Variant got -13 ACMG points: 0P and 13B. BP4_StrongBP6BS1BS2

The NM_000093.5(COL5A1):c.3474+7C>T variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000368 in 1,601,344 control chromosomes in the GnomAD database, including 4 homozygotes. In-silico tool predicts a benign outcome for this variant. 2/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00035 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00037 ( 4 hom. )

Consequence

COL5A1
NM_000093.5 splice_region, intron

Scores

Splicing: ADA: 0.00004487

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:9

Conservation

PhyloP100: -0.332

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]

COL5A1 links:

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -13 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.81).

BP6

Variant 9-134809297-C-T is Benign according to our data. Variant chr9-134809297-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 136879.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=3, Benign=4, Uncertain_significance=1}. Variant chr9-134809297-C-T is described in Lovd as [Likely_benign].

BS1

Variant frequency is greater than expected in population sas. gnomad4 allele frequency = 0.000354 (54/152342) while in subpopulation SAS AF= 0.00311 (15/4828). AF 95% confidence interval is 0.00191. There are 0 homozygotes in gnomad4. There are 33 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.

BS2

High AC in GnomAd4 at 54 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	Effect	Exon rank	MANE	Protein	UniProt
COL5A1	NM_000093.5 link	c.3474+7C>T	splice_region_variant, intron_variant	Intron 43 of 65	ENST00000371817.8	NP_000084.3	P20908-1A0A024R8E5B2ZZ86Q59EE7
COL5A1	NM_001278074.1 link	c.3474+7C>T	splice_region_variant, intron_variant	Intron 43 of 65		NP_001265003.1	B2ZZ86Q59EE7
COL5A1	XM_017014266.3 link	c.3474+7C>T	splice_region_variant, intron_variant	Intron 43 of 64		XP_016869755.1

Ensembl

Gene	Transcript	HGVSc	Effect	Exon rank	TSL	MANE	Protein	UniProt
COL5A1	ENST00000371817.8 link	c.3474+7C>T	splice_region_variant, intron_variant	Intron 43 of 65	1	NM_000093.5	ENSP00000360882.3	P20908-1
COL5A1	ENST00000371820.4 link	c.3474+7C>T	splice_region_variant, intron_variant	Intron 43 of 65	2		ENSP00000360885.4	P20908-2H7BY82
COL5A1	ENST00000463925.1 link	n.330+7C>T	splice_region_variant, intron_variant	Intron 1 of 1	3

Frequencies

GnomAD3 genomes

AF:

0.000355

AC:

AN:

152224

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00137

Gnomad ASJ

AF:

0.000288

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00310

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000206

Gnomad OTH

AF:

0.000955

GnomAD3 exomes

AF:

0.000579

AC:

134

AN:

231464

Hom.:

AF XY:

0.000693

AC XY:

AN XY:

125542

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00114

Gnomad ASJ exome

AF:

0.000517

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00266

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000117

Gnomad OTH exome

AF:

0.000520

GnomAD4 exome

AF:

0.000369

AC:

535

AN:

1449002

Hom.:

Cov.:

AF XY:

0.000501

AC XY:

361

AN XY:

720306

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00109

Gnomad4 ASJ exome

AF:

0.000270

Gnomad4 EAS exome

AF:

0.0000253

Gnomad4 SAS exome

AF:

0.00360

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000119

Gnomad4 OTH exome

AF:

0.000535

GnomAD4 genome

AF:

0.000354

AC:

AN:

152342

Hom.:

Cov.:

AF XY:

0.000443

AC XY:

AN XY:

74496

show subpopulations

Gnomad4 AFR

AF:

0.0000240

Gnomad4 AMR

AF:

0.00137

Gnomad4 ASJ

AF:

0.000288

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00311

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000206

Gnomad4 OTH

AF:

0.000945

Alfa

AF:

0.000383

Hom.:

Bravo

AF:

0.000393

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:9

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:1Benign:3

Genome Diagnostics Laboratory, University Medical Center Utrecht

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Feb 01, 2025

CeGaT Center for Human Genetics Tuebingen

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

COL5A1: BS1 -

Apr 29, 2020

Mayo Clinic Laboratories, Mayo Clinic

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center

Significance: Likely benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

not specified

Benign:3

Jul 23, 2013

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. -

Oct 14, 2015

Eurofins Ntd Llc (ga)

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Oct 06, 2024

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Ehlers-Danlos syndrome

Benign:1

Mar 26, 2021

Genome Diagnostics Laboratory, The Hospital for Sick Children

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Ehlers-Danlos syndrome, classic type

Benign:1

Jan 12, 2018

Illumina Laboratory Services, Illumina

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

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 benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Ehlers-Danlos syndrome, classic type, 1

Benign:1

Jan 25, 2025

Labcorp Genetics (formerly Invitae), Labcorp

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

-0.81

CADD

Benign

3.9

DANN

Benign

0.42

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.000045

dbscSNV1_RF

Benign

0.0020

SpliceAI score (max)

0.27

Details are displayed if max score is > 0.2

DS_DG_spliceai

0.27

Position offset: -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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over