rs72551364

Variant names:

• chr3-12433900-C-T
• rs72551364
• NM_138711.6:c.1183C>T

Variant summary

Our verdict is Pathogenic. The variant received 11 ACMG points: 11P and 0B. PM2 PM5 PP2 PP3_Strong PP5_Moderate

The NM_138711.6(PPARG):​c.1183C>T​(p.Arg395Cys) variant causes a missense, splice region change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,782 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 1/1 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Pathogenic (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R395H) has been classified as Pathogenic.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: PPARG NM_138711.6 missense, splice_region
• Clinical Significance: Pathogenic criteria provided, single submitter P:2
• Conservation: PhyloP100: 7.86
• Publications: 30 publications found

Genes affected

PPARG (HGNC:9236): (peroxisome proliferator activated receptor gamma) This gene encodes a member of the peroxisome proliferator-activated receptor (PPAR) subfamily of nuclear receptors. PPARs form heterodimers with retinoid X receptors (RXRs) and these heterodimers regulate transcription of various genes. Three subtypes of PPARs are known: PPAR-alpha, PPAR-delta, and PPAR-gamma. The protein encoded by this gene is PPAR-gamma and is a regulator of adipocyte differentiation. Additionally, PPAR-gamma has been implicated in the pathology of numerous diseases including obesity, diabetes, atherosclerosis and cancer. Alternatively spliced transcript variants that encode different isoforms have been described. [provided by RefSeq, Jul 2008]

PPARG Gene-Disease associations (from GenCC):

• PPARG-related familial partial lipodystrophy

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Genomics England PanelApp, Ambry Genetics, Orphanet, Labcorp Genetics (formerly Invitae)
• lipodystrophy

  Inheritance: SD Classification: DEFINITIVE Submitted by: ClinGen
• Berardinelli-Seip congenital lipodystrophy

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Pathogenic. The variant received 11 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr3-12433901-G-A is described in ClinVar as Pathogenic. ClinVar VariationId is 1686091.Status of the report is criteria_provided_single_submitter, 1 stars.
• PP2: Missense variant in the PPARG gene, where missense mutations are typically associated with disease (based on misZ statistic). The gene has 16 curated pathogenic missense variants (we use a threshold of 10). The gene has 5 curated benign missense variants. Gene score misZ: 2.1192 (below the threshold of 3.09). Trascript score misZ: 3.0978 (above the threshold of 3.09). GenCC associations: The gene is linked to PPARG-related familial partial lipodystrophy, Berardinelli-Seip congenital lipodystrophy.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.985
• PP5: Variant 3-12433900-C-T is Pathogenic according to our data. Variant chr3-12433900-C-T is described in ClinVar as Pathogenic. ClinVar VariationId is 8142.Status of the report is criteria_provided_single_submitter, 1 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_138711.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PPARG	NM_138711.6	MANE Select	c.1183C>T	p.Arg395Cys	missense splice_region	Exon 8 of 8	NP_619725.3	E9PFV2
	PPARG	NM_015869.5		c.1273C>T	p.Arg425Cys	missense splice_region	Exon 7 of 7	NP_056953.2
	PPARG	NM_001354666.3		c.1183C>T	p.Arg395Cys	missense splice_region	Exon 8 of 8	NP_001341595.2	E9PFV2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PPARG	ENST00000651735.1	MANE Select	c.1183C>T	p.Arg395Cys	missense splice_region	Exon 8 of 8	ENSP00000498313.1	E9PFV2
	PPARG	ENST00000287820.10	TSL:1	c.1273C>T	p.Arg425Cys	missense splice_region	Exon 7 of 7	ENSP00000287820.6	P37231-1
	PPARG	ENST00000397010.7	TSL:1	c.1183C>T	p.Arg395Cys	missense splice_region	Exon 8 of 8	ENSP00000380205.3	E9PFV2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461782 Hom.: 0 Cov.: 31 AF XY: 0.00000275 AC XY: 2 AN XY: 727186

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86236

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53420

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5694

European-Non Finnish (NFE) AF: 0.00000180 AC: 2 AN: 1112004

Other (OTH) AF: 0.00 AC: 0 AN: 60388

GnomAD4 genome Cov.: 32

Alfa AF: 0.0000326 Hom.: 0

ClinVar

ClinVar submissions

Significance: Pathogenic

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
1	-	-	not provided (1)
1	-	-	PPARG-related familial partial lipodystrophy (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.36	D
BayesDel_noAF	Pathogenic	0.28
CADD	Pathogenic	33
DANN	Pathogenic	1.0
DEOGEN2	Uncertain	0.79	D
Eigen	Pathogenic	0.81
Eigen_PC	Pathogenic	0.80
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.96	D
M_CAP	Uncertain	0.21	D
MetaRNN	Pathogenic	0.99	D
MetaSVM	Uncertain	0.26	D
MutationAssessor	Uncertain	2.9	M
PhyloP100		7.9
PrimateAI	Pathogenic	0.89	D
PROVEAN	Pathogenic	-5.9	D
REVEL	Pathogenic	0.79
Sift	Uncertain	0.017	D
Sift4G	Pathogenic	0.0	D
Polyphen		0.86	P
Vest4		0.81
MutPred		0.97		Gain of catalytic residue at P426 (P = 0.2467)
MVP		0.94
MPC		2.1
ClinPred		0.99	D
GERP RS		5.7
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.91
gMVP		0.89
Mutation Taster		=0/100	disease causing (ClinVar)

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

Other links and lift over

dbSNP: rs72551364; hg19: chr3-12475399;