Genetic Variant PPARGC1B:p.Ser76Asn (chr5-149820581-G-A) – ACMG Classification: Likely_benign (-6 pts)

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4_ModerateBS2

The NM_133263.4(PPARGC1B):c.227G>A(p.Ser76Asn) variant causes a missense change. The variant allele was found at a frequency of 0.0000552 in 1,612,878 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000092 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000051 ( 0 hom. )

Consequence

PPARGC1B
NM_133263.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.44

Variant links:

Genes affected

PPARGC1B (HGNC:30022): (PPARG coactivator 1 beta) The protein encoded by this gene stimulates the activity of several transcription factors and nuclear receptors, including estrogen receptor alpha, nuclear respiratory factor 1, and glucocorticoid receptor. The encoded protein may be involved in fat oxidation, non-oxidative glucose metabolism, and the regulation of energy expenditure. This protein is downregulated in prediabetic and type 2 diabetes mellitus patients. Certain allelic variations in this gene increase the risk of the development of obesity. Three transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Mar 2010]

PPARGC1B links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -6 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.15225771).

BS2

High AC in GnomAd4 at 14 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PPARGC1B	NM_133263.4 link	c.227G>A	p.Ser76Asn	missense_variant	Exon 2 of 12	ENST00000309241.10	NP_573570.3	Q86YN6-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
PPARGC1B	ENST00000309241.10 link	c.227G>A	p.Ser76Asn	missense_variant	Exon 2 of 12	1	NM_133263.4	ENSP00000312649.5	Q86YN6-1
PPARGC1B	ENST00000394320.7 link	c.227G>A	p.Ser76Asn	missense_variant	Exon 2 of 11	1		ENSP00000377855.3	Q86YN6-3
PPARGC1B	ENST00000360453.8 link	c.227G>A	p.Ser76Asn	missense_variant	Exon 2 of 11	1		ENSP00000353638.4	Q86YN6-5
PPARGC1B	ENST00000403750.5 link	c.152G>A	p.Ser51Asn	missense_variant	Exon 2 of 11	2		ENSP00000384403.1	Q86YN6-6

Frequencies

GnomAD3 genomes

AF:

0.0000920

AC:

AN:

152116

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00110

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:

0.000191

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000400

AC:

AN:

249928

Hom.:

AF XY:

0.0000592

AC XY:

AN XY:

135198

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000289

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:

0.0000794

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000513

AC:

AN:

1460762

Hom.:

Cov.:

AF XY:

0.0000578

AC XY:

AN XY:

726740

show subpopulations

Gnomad4 AFR exome

AF:

0.00

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:

0.0000639

Gnomad4 OTH exome

AF:

0.0000663

GnomAD4 genome

AF:

0.0000920

AC:

AN:

152116

Hom.:

Cov.:

AF XY:

0.0000673

AC XY:

AN XY:

74314

show subpopulations

Gnomad4 AFR

AF:

0.00

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:

0.000191

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000686

Hom.:

Bravo

AF:

0.0000642

ExAC

AF:

0.0000247

AC:

EpiCase

AF:

0.000218

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Dec 15, 2022

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.227G>A (p.S76N) alteration is located in exon 2 (coding exon 2) of the PPARGC1B gene. This alteration results from a G to A substitution at nucleotide position 227, causing the serine (S) at amino acid position 76 to be replaced by an asparagine (N). 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

0.15

BayesDel_addAF

Benign

-0.39

BayesDel_noAF

Benign

-0.60

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.19

.;.;T;.

Eigen

Uncertain

0.22

Eigen_PC

Uncertain

0.26

FATHMM_MKL

Uncertain

0.96

LIST_S2

Benign

0.61

T;T;T;T

M_CAP

Benign

0.016

MetaRNN

Benign

0.15

T;T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Uncertain

2.0

M;M;M;.

PrimateAI

Benign

0.41

PROVEAN

Benign

-1.5

N;N;N;N

REVEL

Benign

0.078

Sift

Benign

0.11

T;T;T;T

Sift4G

Uncertain

0.017

D;D;D;D

Polyphen

0.012

B;P;D;.

Vest4

0.20

MVP

0.32

MPC

0.16

ClinPred

0.41

GERP RS

4.8

Varity_R

0.14

gMVP

0.30

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