Genetic Variant DGAT2:p.Ser26Phe (chr11-75769068-C-T) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_032564.5(DGAT2):c.77C>T(p.Ser26Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000135 in 1,582,548 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.000072 ( 1 hom., cov: 32)

Exomes 𝑓: 0.00014 ( 0 hom. )

Consequence

DGAT2
NM_032564.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.483

Variant links:

Genes affected

DGAT2 (HGNC:16940): (diacylglycerol O-acyltransferase 2) This gene encodes one of two enzymes which catalyzes the final reaction in the synthesis of triglycerides in which diacylglycerol is covalently bound to long chain fatty acyl-CoAs. The encoded protein catalyzes this reaction at low concentrations of magnesium chloride while the other enzyme has high activity at high concentrations of magnesium chloride. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Dec 2011]

DGAT2 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.07259631).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DGAT2	NM_032564.5 link	c.77C>T	p.Ser26Phe	missense_variant	Exon 1 of 8	ENST00000228027.12	NP_115953.2	Q96PD7-1
DGAT2	NM_001253891.2 link	c.77C>T	p.Ser26Phe	missense_variant	Exon 1 of 7		NP_001240820.1	Q96PD7-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DGAT2	ENST00000228027.12 link	c.77C>T	p.Ser26Phe	missense_variant	Exon 1 of 8	1	NM_032564.5	ENSP00000228027.6		Q96PD7-1

Frequencies

GnomAD3 genomes

AF:

0.0000722

AC:

AN:

152252

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000482

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000132

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000371

AC:

AN:

215836

Hom.:

AF XY:

0.0000418

AC XY:

AN XY:

119756

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000805

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000141

AC:

202

AN:

1430296

Hom.:

Cov.:

AF XY:

0.000128

AC XY:

AN XY:

711106

show subpopulations

Gnomad4 AFR exome

AF:

0.0000649

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000177

Gnomad4 OTH exome

AF:

0.0000844

GnomAD4 genome

AF:

0.0000722

AC:

AN:

152252

Hom.:

Cov.:

AF XY:

0.0000538

AC XY:

AN XY:

74382

show subpopulations

Gnomad4 AFR

AF:

0.0000482

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000132

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000568

Hom.:

Bravo

AF:

0.0000378

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000117

AC:

ExAC

AF:

0.0000331

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jan 17, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.77C>T (p.S26F) alteration is located in exon 1 (coding exon 1) of the DGAT2 gene. This alteration results from a C to T substitution at nucleotide position 77, causing the serine (S) at amino acid position 26 to be replaced by a phenylalanine (F). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.46

BayesDel_noAF

Benign

-0.70

CADD

Benign

DANN

Benign

0.75

DEOGEN2

Benign

0.074

T;.;.

Eigen

Benign

-0.93

Eigen_PC

Benign

-0.96

FATHMM_MKL

Benign

0.18

LIST_S2

Benign

0.52

T;T;T

M_CAP

Benign

0.0067

MetaRNN

Benign

0.073

T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.34

N;N;.

PrimateAI

Uncertain

0.59

PROVEAN

Benign

-0.10

N;N;.

REVEL

Benign

0.052

Sift

Benign

0.037

D;T;.

Sift4G

Benign

0.13

T;T;T

Polyphen

0.0

B;B;.

Vest4

0.13

MVP

0.39

MPC

1.4

ClinPred

0.044

GERP RS

1.2

Varity_R

0.045

gMVP

0.34

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