NM_000088.4:c.4181A>G

Variant names:

Variant summary

Our verdict is Benign. Variant got -11 ACMG points: 3P and 14B. PM1PP2BP4_ModerateBP6_Very_StrongBS2

The NM_000088.4(COL1A1):c.4181A>G(p.Asn1394Ser) variant causes a missense change. The variant allele was found at a frequency of 0.00101 in 1,614,082 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 0.00087 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0010 ( 1 hom. )

Consequence

COL1A1
NM_000088.4 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:12

Conservation

PhyloP100: 6.22

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:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -11 ACMG points.

PM1

In a propeptide C-terminal propeptide (size 245) in uniprot entity CO1A1_HUMAN there are 65 pathogenic changes around while only 15 benign (81%) in NM_000088.4

PP2

Missense variant in the COL1A1 gene, where missense mutations are typically associated with disease (based on misZ statistic). The gene has 368 curated pathogenic missense variants (we use a threshold of 10). The gene has 98 curated benign missense variants. Gene score misZ: 3.5319 (above the threshold of 3.09). Trascript score misZ: 5.7733 (above the threshold of 3.09). GenCC associations: The gene is linked to Caffey disease, Ehlers-Danlos/osteogenesis imperfecta syndrome, combined osteogenesis imperfecta and Ehlers-Danlos syndrome 1, Ehlers-Danlos syndrome, arthrochalasia type, osteogenesis imperfecta type 3, Ehlers-Danlos syndrome, classic type, 1, high bone mass osteogenesis imperfecta, osteogenesis imperfecta type 4, Ehlers-Danlos syndrome, classic type, osteogenesis imperfecta type 2, osteogenesis imperfecta type 1.

BP4

Computational evidence support a benign effect (MetaRNN=0.16910905).

BP6

Variant 17-50185845-T-C is Benign according to our data. Variant chr17-50185845-T-C is described in ClinVar as [Likely_benign]. Clinvar id is 379751.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr17-50185845-T-C is described in Lovd as [Likely_benign].

BS2

High AC in GnomAd4 at 132 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
COL1A1	NM_000088.4 link	c.4181A>G	p.Asn1394Ser	missense_variant	Exon 50 of 51	ENST00000225964.10	NP_000079.2	P02452
COL1A1	XM_011524341.2 link	c.3983A>G	p.Asn1328Ser	missense_variant	Exon 47 of 48		XP_011522643.1
COL1A1	XM_005257058.5 link	c.3911A>G	p.Asn1304Ser	missense_variant	Exon 48 of 49		XP_005257115.2
COL1A1	XM_005257059.5 link	c.3263A>G	p.Asn1088Ser	missense_variant	Exon 37 of 38		XP_005257116.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
COL1A1	ENST00000225964.10 link	c.4181A>G	p.Asn1394Ser	missense_variant	Exon 50 of 51	1	NM_000088.4	ENSP00000225964.6		P02452
COL1A1	ENST00000510710.3 link	n.1146A>G		splice_region_variant, non_coding_transcript_exon_variant	Exon 2 of 2	2

Frequencies

GnomAD3 genomes

AF:

0.000868

AC:

132

AN:

152096

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000266

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000196

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00132

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00151

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.000768

AC:

193

AN:

251148

Hom.:

AF XY:

0.000788

AC XY:

107

AN XY:

135868

show subpopulations

Gnomad AFR exome

AF:

0.0000616

Gnomad AMR exome

AF:

0.0000578

Gnomad ASJ exome

AF:

0.000199

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000327

Gnomad FIN exome

AF:

0.00125

Gnomad NFE exome

AF:

0.00135

Gnomad OTH exome

AF:

0.00114

GnomAD4 exome

AF:

0.00102

AC:

1491

AN:

1461868

Hom.:

Cov.:

AF XY:

0.000993

AC XY:

722

AN XY:

727236

show subpopulations

Gnomad4 AFR exome

AF:

0.000209

Gnomad4 AMR exome

AF:

0.000134

Gnomad4 ASJ exome

AF:

0.000191

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00150

Gnomad4 NFE exome

AF:

0.00121

Gnomad4 OTH exome

AF:

0.000828

GnomAD4 genome

AF:

0.000867

AC:

132

AN:

152214

Hom.:

Cov.:

AF XY:

0.000846

AC XY:

AN XY:

74438

show subpopulations

Gnomad4 AFR

AF:

0.000265

Gnomad4 AMR

AF:

0.000196

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00132

Gnomad4 NFE

AF:

0.00151

Gnomad4 OTH

AF:

0.000473

Alfa

AF:

0.00143

Hom.:

Bravo

AF:

0.000733

TwinsUK

AF:

0.00108

AC:

ALSPAC

AF:

0.00130

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.00256

AC:

ExAC

AF:

0.000881

AC:

107

Asia WGS

AF:

0.000289

AC:

AN:

3478

EpiCase

AF:

0.00147

EpiControl

AF:

0.00130

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:12

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:4

Breakthrough Genomics, Breakthrough Genomics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: not provided

- -

Jan 18, 2021

GeneDx

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant is associated with the following publications: (PMID: 25146735, 23692737, 24618965, 25834947) -

Dec 01, 2023

CeGaT Center for Human Genetics Tuebingen

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

COL1A1: BP4, BS1 -

May 21, 2024

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Osteogenesis imperfecta

Benign:2

Apr 27, 2017

Illumina Laboratory Services, Illumina

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). Publications were found based on this search. The evidence from the literature, in combination with allele frequency data from public databases where available, was sufficient to rule this variant out of causing disease. Therefore, this variant is classified as benign. -

Aug 11, 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

Benign:1

Dec 24, 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, arthrochalasia type

Benign:1

Apr 27, 2017

Illumina Laboratory Services, Illumina

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Infantile cortical hyperostosis

Benign:1

Apr 27, 2017

Illumina Laboratory Services, Illumina

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases allowed determination this variant is unlikely to cause disease. Therefore, this variant is classified as likely benign. -

Cardiovascular phenotype

Benign:1

Mar 21, 2019

Ambry Genetics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This alteration is classified as likely 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. -

Connective tissue disorder

Benign:1

Nov 01, 2016

Center for Human Genetics, Inc, Center for Human Genetics, Inc

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Osteogenesis imperfecta type I

Benign:1

Jan 23, 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

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.26

BayesDel_noAF

Benign

-0.19

CADD

Uncertain

DANN

Uncertain

0.99

Eigen

Benign

0.10

Eigen_PC

Benign

0.17

FATHMM_MKL

Uncertain

0.87

M_CAP

Uncertain

0.11

MetaRNN

Benign

0.17

MetaSVM

Uncertain

-0.15

PrimateAI

Uncertain

0.48

PROVEAN

Uncertain

-4.2

REVEL

Uncertain

0.39

Sift

Uncertain

0.0020

Sift4G

Uncertain

0.029

Vest4

0.77

MVP

0.84

MPC

0.44

ClinPred

0.10

GERP RS

4.3

gMVP

0.82

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