rs41316673

Variant names:

Variant summary

Our verdict is Benign. Variant got -17 ACMG points: 0P and 17B. BP4_StrongBP6_Very_StrongBP7BS2

The NM_000088.4(COL1A1):c.2115C>T(p.Asn705Asn) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000166 in 1,587,696 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 Likely benign (★★).

Frequency

Genomes: 𝑓 0.00027 ( 1 hom., cov: 33)

Exomes 𝑓: 0.00016 ( 0 hom. )

Consequence

COL1A1
NM_000088.4 synonymous

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:5

Conservation

PhyloP100: -1.52

Variant links:

Genes affected

COL1A1 (HGNC:2197): (collagen type I alpha 1 chain) This gene encodes the pro-alpha1 chains of type I collagen whose triple helix comprises two alpha1 chains and one alpha2 chain. Type I is a fibril-forming collagen found in most connective tissues and is abundant in bone, cornea, dermis and tendon. Mutations in this gene are associated with osteogenesis imperfecta types I-IV, Ehlers-Danlos syndrome type VIIA, Ehlers-Danlos syndrome Classical type, Caffey Disease and idiopathic osteoporosis. Reciprocal translocations between chromosomes 17 and 22, where this gene and the gene for platelet-derived growth factor beta are located, are associated with a particular type of skin tumor called dermatofibrosarcoma protuberans, resulting from unregulated expression of the growth factor. Two transcripts, resulting from the use of alternate polyadenylation signals, have been identified for this gene. [provided by R. Dalgleish, Feb 2008]

COL1A1 links:

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -17 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.74).

BP6

Variant 17-50191800-G-A is Benign according to our data. Variant chr17-50191800-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 456743.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr17-50191800-G-A is described in Lovd as [Likely_benign]. Variant chr17-50191800-G-A is described in Lovd as [Benign].

BP7

Synonymous conserved (PhyloP=-1.52 with no splicing effect.

BS2

High AC in GnomAd4 at 41 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
COL1A1	NM_000088.4 link	c.2115C>T	p.Asn705Asn	synonymous_variant	Exon 31 of 51	ENST00000225964.10	NP_000079.2	P02452
COL1A1	XM_011524341.2 link	c.1917C>T	p.Asn639Asn	synonymous_variant	Exon 28 of 48		XP_011522643.1
COL1A1	XM_005257058.5 link	c.2115C>T	p.Asn705Asn	synonymous_variant	Exon 31 of 49		XP_005257115.2
COL1A1	XM_005257059.5 link	c.1197C>T	p.Asn399Asn	synonymous_variant	Exon 18 of 38		XP_005257116.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
COL1A1	ENST00000225964.10 link	c.2115C>T	p.Asn705Asn	synonymous_variant	Exon 31 of 51	1	NM_000088.4	ENSP00000225964.6	P02452
COL1A1	ENST00000476387.1 link	n.464C>T		non_coding_transcript_exon_variant	Exon 7 of 9	2
COL1A1	ENST00000504289.1 link	n.*66C>T		downstream_gene_variant		2

Frequencies

GnomAD3 genomes

AF:

0.000276

AC:

AN:

152132

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000338

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00131

Gnomad ASJ

AF:

0.000288

Gnomad EAS

AF:

0.000579

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000588

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000652

AC:

136

AN:

208682

Hom.:

AF XY:

0.000507

AC XY:

AN XY:

112316

show subpopulations

Gnomad AFR exome

AF:

0.000156

Gnomad AMR exome

AF:

0.00391

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000622

Gnomad SAS exome

AF:

0.0000375

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000996

Gnomad OTH exome

AF:

0.000752

GnomAD4 exome

AF:

0.000155

AC:

223

AN:

1435446

Hom.:

Cov.:

AF XY:

0.000141

AC XY:

100

AN XY:

711628

show subpopulations

Gnomad4 AFR exome

AF:

0.000121

Gnomad4 AMR exome

AF:

0.00341

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000542

Gnomad4 SAS exome

AF:

0.0000121

Gnomad4 FIN exome

AF:

0.0000195

Gnomad4 NFE exome

AF:

0.0000419

Gnomad4 OTH exome

AF:

0.000168

GnomAD4 genome

AF:

0.000269

AC:

AN:

152250

Hom.:

Cov.:

AF XY:

0.000201

AC XY:

AN XY:

74456

show subpopulations

Gnomad4 AFR

AF:

0.000313

Gnomad4 AMR

AF:

0.00131

Gnomad4 ASJ

AF:

0.000288

Gnomad4 EAS

AF:

0.000580

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000588

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000164

Hom.:

Bravo

AF:

0.000332

Asia WGS

AF:

0.000577

AC:

AN:

3478

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:5

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:2

Feb 23, 2023

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Jan 07, 2021

GeneDx

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Osteogenesis imperfecta

Benign:1

Feb 23, 2022

Genome Diagnostics Laboratory, The Hospital for Sick Children

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Cardiovascular phenotype

Benign:1

Jan 18, 2022

Ambry Genetics

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This alteration is classified as benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Osteogenesis imperfecta type I

Benign:1

Jan 29, 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

-0.74

CADD

Benign

0.25

DANN

Benign

0.76

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.

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