rs35206248

Variant names:

• chr4-530476-G-C
• rs35206248
• NM_001127178.3:c.2302G>C

Your query was ambiguous. Multiple possible variants found:

• chr4-530476-G-C
• chr4-530476-G-A

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2 PP3

The NM_001127178.3(PIGG):​c.2302G>C​(p.Gly768Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000397 in 1,613,646 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: 𝑓 0.000013 (0 hom., cov: 33)
  • Exomes 𝑓: 0.000042 (0 hom.)
• Consequence: PIGG NM_001127178.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 8.92
• Publications: 1 publications found

Genes affected

PIGG (HGNC:25985): (phosphatidylinositol glycan anchor biosynthesis class G (EMM blood group)) This gene encodes an enzyme involved in glycosylphosphatidylinositol-anchor biosynthesis. The encoded protein, which is localized to the endoplasmic reticulum, is involved in transferring ethanoloamine phosphate to mannose 2 of glycosylphosphatidylinositol species H7 to form species H8. Allelic variants of this gene have been associated with intellectual disability, hypotonia, and early-onset seizures. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Sep 2016]

PIGG Gene-Disease associations (from GenCC):

• intellectual disability, autosomal recessive 53

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics

ACMG classification

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.821

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001127178.3. 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
	PIGG	NM_001127178.3	MANE Select	c.2302G>C	p.Gly768Arg	missense	Exon 11 of 13	NP_001120650.1	Q5H8A4-1
	PIGG	NM_017733.5		c.2278G>C	p.Gly760Arg	missense	Exon 11 of 13	NP_060203.3
	PIGG	NM_001289051.2		c.2035G>C	p.Gly679Arg	missense	Exon 11 of 13	NP_001275980.1	E7EWV1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PIGG	ENST00000453061.7	TSL:1 MANE Select	c.2302G>C	p.Gly768Arg	missense	Exon 11 of 13	ENSP00000415203.2	Q5H8A4-1
	PIGG	ENST00000383028.8	TSL:1	c.1903G>C	p.Gly635Arg	missense	Exon 9 of 11	ENSP00000372494.4	Q5H8A4-3
	PIGG	ENST00000310340.9	TSL:2	c.2278G>C	p.Gly760Arg	missense	Exon 11 of 13	ENSP00000311750.5	Q5H8A4-2

Frequencies

GnomAD3 genomes AF: 0.0000132 AC: 2 AN: 152074 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.00

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: 0.0000294

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000517 AC: 13 AN: 251388 AF XY: 0.0000442

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 FIN exome AF: 0.00

Gnomad NFE exome AF: 0.000114

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000424 AC: 62 AN: 1461572 Hom.: 0 Cov.: 30 AF XY: 0.0000440 AC XY: 32 AN XY: 727116

African (AFR) AF: 0.00 AC: 0 AN: 33478

American (AMR) AF: 0.00 AC: 0 AN: 44720

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26134

East Asian (EAS) AF: 0.00 AC: 0 AN: 39698

South Asian (SAS) AF: 0.0000116 AC: 1 AN: 86246

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

Middle Eastern (MID) AF: 0.000173 AC: 1 AN: 5766

European-Non Finnish (NFE) AF: 0.0000504 AC: 56 AN: 1111724

Other (OTH) AF: 0.0000662 AC: 4 AN: 60386

GnomAD4 genome AF: 0.0000132 AC: 2 AN: 152074 Hom.: 0 Cov.: 33 AF XY: 0.0000135 AC XY: 1 AN XY: 74254

African (AFR) AF: 0.00 AC: 0 AN: 41392

American (AMR) AF: 0.00 AC: 0 AN: 15272

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5190

South Asian (SAS) AF: 0.00 AC: 0 AN: 4820

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10586

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000294 AC: 2 AN: 68026

Other (OTH) AF: 0.00 AC: 0 AN: 2088

Alfa AF: 0.000113 Hom.: 0

Bravo AF: 0.0000378

ExAC AF: 0.0000494 AC: 6

EpiCase AF: 0.000327

EpiControl AF: 0.000237

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	Intellectual disability, autosomal recessive 53 (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.92
BayesDel_addAF	Uncertain	0.081	D
BayesDel_noAF	Uncertain	0.090
CADD	Pathogenic	28
DANN	Pathogenic	1.0
DEOGEN2	Benign	0.12	T
Eigen	Pathogenic	0.77
Eigen_PC	Pathogenic	0.77
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.96	D
M_CAP	Benign	0.030	D
MetaRNN	Pathogenic	0.82	D
MetaSVM	Benign	-1.1	T
MutationAssessor	Uncertain	2.8	M
PhyloP100		8.9
PrimateAI	Uncertain	0.74	T
PROVEAN	Uncertain	-4.0	D
REVEL	Uncertain	0.47
Sift	Uncertain	0.0080	D
Sift4G	Uncertain	0.0090	D
Polyphen		1.0	D
Vest4		0.98
MVP		0.46
MPC		0.76
ClinPred		0.89	D
GERP RS		5.6
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.60
gMVP		0.91
Mutation Taster		=32/68	disease causing

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.070		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: rs35206248; hg19: chr4-524265; COSMIC: COSV108104763; COSMIC: COSV108104763;