rs138078016

Variant names:

Variant summary

Our verdict is Benign. The variant received -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BS1BS2

The NM_000088.4(COL1A1):c.612C>T(p.Pro204Pro) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000802 in 1,614,056 control chromosomes in the GnomAD database, including 11 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.0044 ( 5 hom., cov: 32)

Exomes 𝑓: 0.00043 ( 6 hom. )

Consequence

COL1A1
NM_000088.4 synonymous

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:8

Conservation

PhyloP100: 0.509

Publications

0 publications found

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 Gene-Disease associations (from GenCC):

Caffey disease
Inheritance: AD Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE Submitted by: Ambry Genetics, Orphanet, Labcorp Genetics (formerly Invitae), G2P, ClinGen
combined osteogenesis imperfecta and Ehlers-Danlos syndrome 1
Inheritance: AD Classification: DEFINITIVE, MODERATE Submitted by: Ambry Genetics, ClinGen
Ehlers-Danlos syndrome
Inheritance: AD Classification: DEFINITIVE Submitted by: G2P
Ehlers-Danlos syndrome, arthrochalasia type
Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, PanelApp Australia, G2P, Genomics England PanelApp, Labcorp Genetics (formerly Invitae), ClinGen
osteogenesis imperfecta type 1
Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, ClinGen
osteogenesis imperfecta type 2
Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, ClinGen
osteogenesis imperfecta type 3
Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: ClinGen, Labcorp Genetics (formerly Invitae), Orphanet
osteogenesis imperfecta type 4
Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: G2P, Orphanet, ClinGen
Ehlers-Danlos syndrome, classic type, 1
Inheritance: AD Classification: MODERATE Submitted by: ClinGen
Ehlers-Danlos syndrome, classic type
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
Ehlers-Danlos/osteogenesis imperfecta syndrome
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
high bone mass osteogenesis imperfecta
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

COL1A1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -21 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.48).

BP6

Variant 17-50197979-G-A is Benign according to our data. Variant chr17-50197979-G-A is described in ClinVar as [Benign]. Clinvar id is 35926.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=0.509 with no splicing effect.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00436 (664/152182) while in subpopulation AFR AF = 0.0155 (643/41512). AF 95% confidence interval is 0.0145. There are 5 homozygotes in GnomAd4. There are 317 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High AC in GnomAd4 at 664 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
COL1A1	NM_000088.4 link	c.612C>T	p.Pro204Pro	synonymous_variant	Exon 8 of 51	ENST00000225964.10	NP_000079.2	P02452
COL1A1	XM_011524341.2 link	c.612C>T	p.Pro204Pro	synonymous_variant	Exon 8 of 48		XP_011522643.1
COL1A1	XM_005257058.5 link	c.612C>T	p.Pro204Pro	synonymous_variant	Exon 8 of 49		XP_005257115.2
COL1A1	XM_005257059.5 link	c.612C>T	p.Pro204Pro	synonymous_variant	Exon 8 of 38		XP_005257116.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
COL1A1	ENST00000225964.10 link	c.612C>T	p.Pro204Pro	synonymous_variant	Exon 8 of 51	1	NM_000088.4	ENSP00000225964.6		P02452
COL1A1	ENST00000495677.1 link	n.339C>T		non_coding_transcript_exon_variant	Exon 3 of 8	3

Frequencies

GnomAD3 genomes

AF:

0.00436

AC:

663

AN:

152064

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0155

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000916

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00287

GnomAD2 exomes

AF:

0.00115

AC:

289

AN:

250818

AF XY:

0.000839

show subpopulations

Gnomad AFR exome

AF:

0.0156

Gnomad AMR exome

AF:

0.000810

Gnomad ASJ exome

AF:

0.0000994

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000353

Gnomad OTH exome

AF:

0.000490

GnomAD4 exome

AF:

0.000431

AC:

630

AN:

1461874

Hom.:

Cov.:

AF XY:

0.000360

AC XY:

262

AN XY:

727246

show subpopulations

African (AFR)

AF:

0.0151

AC:

505

AN:

33480

American (AMR)

AF:

0.000805

AC:

AN:

44722

Ashkenazi Jewish (ASJ)

AF:

0.000115

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.000116

AC:

AN:

86256

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53418

Middle Eastern (MID)

AF:

0.000173

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000126

AC:

AN:

1112002

Other (OTH)

AF:

0.00101

AC:

AN:

60392

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.470

Heterozygous variant carriers

107

142

178

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.00436

AC:

664

AN:

152182

Hom.:

Cov.:

AF XY:

0.00426

AC XY:

317

AN XY:

74402

show subpopulations

African (AFR)

AF:

0.0155

AC:

643

AN:

41512

American (AMR)

AF:

0.000915

AC:

AN:

15298

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5168

South Asian (SAS)

AF:

0.00

AC:

AN:

4810

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10598

Middle Eastern (MID)

AF:

0.00340

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68008

Other (OTH)

AF:

0.00284

AC:

AN:

2110

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.499

Heterozygous variant carriers

117

146

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00219

Hom.:

Bravo

AF:

0.00496

Asia WGS

AF:

0.000866

AC:

AN:

3478

ClinVar

Significance: Benign

Submissions summary: Benign:8

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:3

Clinical Genetics, Academic Medical Center

Significance:Benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Dec 06, 2024

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

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Aug 28, 2017

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. -

not provided

Benign:2

Oct 18, 2023

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Genome Diagnostics Laboratory, University Medical Center Utrecht

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Osteogenesis imperfecta

Benign:1

Mar 10, 2022

Genome Diagnostics Laboratory, The Hospital for Sick Children

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Cardiovascular phenotype

Benign:1

Aug 10, 2019

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 24, 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

-0.48

CADD

Benign

(source)

DANN

Benign

0.80

PhyloP100

0.51

Mutation Taster

=100/0

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.050

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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rs138078016

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over