4-23812781-G-A

Variant names:

• chr4-23812781-G-A
• NM_013261.5:c.1985C>T

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_013261.5(PPARGC1A):​c.1985C>T​(p.Ala662Val) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 31)
• Consequence: PPARGC1A NM_013261.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 9.60

Genes affected

PPARGC1A (HGNC:9237): (PPARG coactivator 1 alpha) The protein encoded by this gene is a transcriptional coactivator that regulates the genes involved in energy metabolism. This protein interacts with PPARgamma, which permits the interaction of this protein with multiple transcription factors. This protein can interact with, and regulate the activities of, cAMP response element binding protein (CREB) and nuclear respiratory factors (NRFs). It provides a direct link between external physiological stimuli and the regulation of mitochondrial biogenesis, and is a major factor that regulates muscle fiber type determination. This protein may be also involved in controlling blood pressure, regulating cellular cholesterol homoeostasis, and the development of obesity. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PPARGC1A	NM_013261.5	c.1985C>T	p.Ala662Val	missense_variant	Exon 10 of 13	ENST00000264867.7	NP_037393.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PPARGC1A	ENST00000264867.7	c.1985C>T	p.Ala662Val	missense_variant	Exon 10 of 13	1	NM_013261.5	ENSP00000264867.2

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 31

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Aug 02, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1985C>T (p.A662V) alteration is located in exon 10 (coding exon 10) of the PPARGC1A gene. This alteration results from a C to T substitution at nucleotide position 1985, causing the alanine (A) at amino acid position 662 to be replaced by a valine (V). 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	0.25
BayesDel_addAF	Uncertain	0.019	T
BayesDel_noAF	Benign	-0.21
CADD	Uncertain	26
DANN	Uncertain	0.99
DEOGEN2	Benign	0.38	T;.
Eigen	Pathogenic	0.80
Eigen_PC	Pathogenic	0.79
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.93	D;D
M_CAP	Benign	0.018	T
MetaRNN	Uncertain	0.68	D;D
MetaSVM	Benign	-0.99	T
MutationAssessor	Uncertain	2.1	M;.
PrimateAI	Uncertain	0.74	T
PROVEAN	Benign	-1.4	N;.
REVEL	Benign	0.21
Sift	Benign	0.16	T;.
Sift4G	Benign	0.51	T;T
Polyphen		0.99	D;.
Vest4		0.72
MutPred		0.25		Gain of methylation at K663 (P = 0.0373);.;
MVP		0.50
MPC		0.22
ClinPred		0.93	D
GERP RS		5.3
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.26
gMVP		0.44

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		Details are displayed if max score is > 0.2

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

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr4-23814404; COSMIC: COSV53527859; COSMIC: COSV53527859;