chr8-144318305-TAGG-T

Variant names:

Variant summary

Our verdict is Likely pathogenic. The variant received 9 ACMG points: 9P and 0B. PM4_SupportingPP5_Very_Strong

The NM_012079.6(DGAT1):c.629_631delCCT(p.Ser210del) variant causes a disruptive inframe deletion change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000117 in 1,612,540 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Likely pathogenic (★★). Synonymous variant affecting the same amino acid position (i.e. S210S) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000092 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00012 ( 0 hom. )

Consequence

DGAT1
NM_012079.6 disruptive_inframe_deletion

Scores

Not classified

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:6U:2

Conservation

PhyloP100: 7.74

Publications

2 publications found

Variant links:

Genes affected

DGAT1 (HGNC:2843): (diacylglycerol O-acyltransferase 1) This gene encodes an multipass transmembrane protein that functions as a key metabolic enzyme. The encoded protein catalyzes the conversion of diacylglycerol and fatty acyl CoA to triacylglycerol. This enzyme can also transfer acyl CoA to retinol. Activity of this protein may be associated with obesity and other metabolic diseases. [provided by RefSeq, Jul 2013]

DGAT1 Gene-Disease associations (from GenCC):

congenital diarrhea 7 with exudative enteropathy
Inheritance: AR Classification: STRONG, MODERATE, SUPPORTIVE, LIMITED Submitted by: G2P, Labcorp Genetics (formerly Invitae), Orphanet, PanelApp Australia, Ambry Genetics

DGAT1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_pathogenic. The variant received 9 ACMG points.

PM4

Nonframeshift variant in NON repetitive region in NM_012079.6. Strenght limited to Supporting due to length of the change: 1aa.

PP5

Variant 8-144318305-TAGG-T is Pathogenic according to our data. Variant chr8-144318305-TAGG-T is described in ClinVar as [Likely_pathogenic]. Clinvar id is 548013.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DGAT1	NM_012079.6 link	c.629_631delCCT	p.Ser210del	disruptive_inframe_deletion	Exon 7 of 17	ENST00000528718.6	NP_036211.2	O75907

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DGAT1	ENST00000528718.6 link	c.629_631delCCT	p.Ser210del	disruptive_inframe_deletion	Exon 7 of 17	1	NM_012079.6	ENSP00000482264.1		O75907

Frequencies

GnomAD3 genomes

AF:

0.0000921

AC:

AN:

152014

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000194

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000177

Gnomad OTH

AF:

0.000478

GnomAD2 exomes

AF:

0.0000521

AC:

AN:

249596

AF XY:

0.0000517

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.000100

Gnomad EAS exome

AF:

0.0000545

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000890

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000120

AC:

175

AN:

1460526

Hom.:

AF XY:

0.000122

AC XY:

AN XY:

726578

show subpopulations

African (AFR)

AF:

0.0000299

AC:

AN:

33476

American (AMR)

AF:

0.00

AC:

AN:

44708

Ashkenazi Jewish (ASJ)

AF:

0.0000383

AC:

AN:

26104

East Asian (EAS)

AF:

0.00

AC:

AN:

39692

South Asian (SAS)

AF:

0.0000116

AC:

AN:

86236

European-Finnish (FIN)

AF:

0.0000382

AC:

AN:

52318

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.000150

AC:

167

AN:

1111854

Other (OTH)

AF:

0.0000497

AC:

AN:

60370

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.473

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0000921

AC:

AN:

152014

Hom.:

Cov.:

AF XY:

0.0000539

AC XY:

AN XY:

74246

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41378

American (AMR)

AF:

0.00

AC:

AN:

15274

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.000194

AC:

AN:

5166

South Asian (SAS)

AF:

0.00

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10592

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.000177

AC:

AN:

67986

Other (OTH)

AF:

0.000478

AC:

AN:

2090

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.496

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000253

Hom.:

Bravo

AF:

0.000113

EpiCase

AF:

0.0000545

EpiControl

AF:

0.0000593

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:6Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Congenital diarrhea 7 with exudative enteropathy

Pathogenic:4Uncertain:1

Jun 08, 2024

Fulgent Genetics, Fulgent Genetics

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Sep 07, 2021

Revvity Omics, Revvity

Significance:Likely pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Nov 15, 2017

Mayo Clinic Laboratories, Mayo Clinic

Significance:Uncertain significance

Review Status:flagged submission

Collection Method:clinical testing

- -

Nov 30, 2022

OMIM

Significance:Pathogenic

Review Status:no assertion criteria provided

Collection Method:literature only

- -

Jul 30, 2020

Genetics and Molecular Pathology, SA Pathology

Significance:Likely pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

not provided

Pathogenic:2

Apr 25, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant, c.629_631del, results in the deletion of 1 amino acid(s) of the DGAT1 protein (p.Ser210del), but otherwise preserves the integrity of the reading frame. This variant is present in population databases (rs782577883, gnomAD 0.01%). This variant has been observed in individual(s) with protein-losing enteropathy (PMID: 29604290, 31778854, 33607125). It has also been observed to segregate with disease in related individuals. ClinVar contains an entry for this variant (Variation ID: 548013). Studies have shown that this variant alters DGAT1 gene expression (PMID: 29604290). For these reasons, this variant has been classified as Pathogenic. -

Dec 09, 2021

GeneDx

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Published functional studies demonstrate a damaging effect with reduced DGAT1 protein levels observed in cells transfected with DGAT1 gene with this variant (van Rijn et al., 2018); In-frame deletion of 1 amino acids in a non-repeat region; In silico analysis, which includes protein predictors and evolutionary conservation, supports a deleterious effect; This variant is associated with the following publications: (PMID: 31778854, 33144682, 33607125, 29604290) -

See cases

Uncertain:1

Jun 24, 2020

Laboratorio de Genetica e Diagnostico Molecular, Hospital Israelita Albert Einstein

Significance:Uncertain significance

Review Status:flagged submission

Collection Method:clinical testing

ACMG classification criteria: PM2, PM4, PP3 -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

PhyloP100

7.7

Mutation Taster

=3/97

disease causing

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.040

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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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