16-29813826-G-T

Variant names:

• chr16-29813826-G-T
• NM_145239.3:c.772G>T

Variant summary

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

The NM_145239.3(PRRT2):​c.772G>T​(p.Gly258Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,296 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: PRRT2 NM_145239.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.52

Genes affected

PRRT2 (HGNC:30500): (proline rich transmembrane protein 2) This gene encodes a transmembrane protein containing a proline-rich domain in its N-terminal half. Studies in mice suggest that it is predominantly expressed in brain and spinal cord in embryonic and postnatal stages. Mutations in this gene are associated with episodic kinesigenic dyskinesia-1. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jan 2012]

ENSG00000280893 (HGNC:):

MVP-DT (HGNC:56029): (MVP divergent transcript)

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
PRRT2	NM_145239.3	c.772G>T	p.Gly258Trp	missense_variant	Exon 2 of 4	ENST00000358758.12	NP_660282.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PRRT2	ENST00000358758.12	c.772G>T	p.Gly258Trp	missense_variant	Exon 2 of 4	1	NM_145239.3	ENSP00000351608.7
ENSG00000280893	ENST00000609618.2	n.772G>T		non_coding_transcript_exon_variant	Exon 2 of 6	5		ENSP00000476774.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461296 Hom.: 0 Cov.: 35 AF XY: 0.00 AC XY: 0 AN XY: 726978

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: 0.00000180

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.46
BayesDel_addAF	Uncertain	0.039	T
BayesDel_noAF	Benign	-0.18
CADD	Pathogenic	29
DANN	Uncertain	0.99
DEOGEN2	Benign	0.020	T;.;.;.;T;T;T
Eigen	Uncertain	0.45
Eigen_PC	Uncertain	0.41
FATHMM_MKL	Uncertain	0.84	D
LIST_S2	Benign	0.75	.;.;T;T;.;.;T
M_CAP	Uncertain	0.12	D
MetaRNN	Uncertain	0.46	T;T;T;T;T;T;T
MetaSVM	Benign	-0.29	T
MutationAssessor	Benign	1.0	L;L;L;L;L;L;L
PrimateAI	Uncertain	0.61	T
PROVEAN	Benign	-0.57	N;.;N;N;.;.;.
REVEL	Uncertain	0.32
Sift	Uncertain	0.0010	D;.;D;D;.;.;.
Sift4G	Uncertain	0.0060	D;.;D;D;.;D;.
Polyphen		1.0	D;D;D;D;D;D;D
Vest4		0.54
MutPred		0.56		Loss of disorder (P = 0.039);Loss of disorder (P = 0.039);Loss of disorder (P = 0.039);Loss of disorder (P = 0.039);Loss of disorder (P = 0.039);Loss of disorder (P = 0.039);Loss of disorder (P = 0.039);
MVP		0.77
MPC		0.95
ClinPred		0.94	D
GERP RS		3.7
Varity_R		0.11
gMVP		0.63

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: chr16-29825147;