chr3-189215340-G-C

Position:

• chr3-189215340-G-C

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_198485.4(TPRG1):​c.259G>C​(p.Glu87Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,459,572 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: TPRG1 NM_198485.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.192

Genes affected

TPRG1 (HGNC:24759): (tumor protein p63 regulated 1) Predicted to be active in cytoplasm. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.0657126).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TPRG1	NM_198485.4	c.259G>C	p.Glu87Gln	missense_variant	3/6	ENST00000345063.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TPRG1	ENST00000345063.8	c.259G>C	p.Glu87Gln	missense_variant	3/6	1	NM_198485.4	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.85e-7 AC: 1 AN: 1459572 Hom.: 0 Cov.: 30 AF XY: 0.00 AC XY: 0 AN XY: 726018

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: 9.00e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

May 11, 2022

The c.259G>C (p.E87Q) alteration is located in exon 3 (coding exon 2) of the TPRG1 gene. This alteration results from a G to C substitution at nucleotide position 259, causing the glutamic acid (E) at amino acid position 87 to be replaced by a glutamine (Q). 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	0.081
BayesDel_addAF	Benign	-0.23	T
BayesDel_noAF	Benign	-0.56
CADD	Benign	8.3
DANN	Benign	0.85
DEOGEN2	Benign	0.018	T;T;T;T
Eigen	Benign	-0.62
Eigen_PC	Benign	-0.67
FATHMM_MKL	Benign	0.031	N
LIST_S2	Benign	0.63	.;T;T;T
M_CAP	Benign	0.0018	T
MetaRNN	Benign	0.066	T;T;T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.55	N;.;N;.
MutationTaster	Benign	1.0	N;N
PrimateAI	Benign	0.27	T
PROVEAN	Benign	-0.87	N;N;N;N
REVEL	Benign	0.047
Sift	Benign	0.44	T;T;T;T
Sift4G	Benign	0.39	T;T;T;T
Polyphen		0.0020	B;.;B;.
Vest4		0.17
MutPred		0.19		Loss of sheet (P = 0.0817);Loss of sheet (P = 0.0817);Loss of sheet (P = 0.0817);Loss of sheet (P = 0.0817);
MVP		0.030
MPC		0.030
ClinPred		0.054	T
GERP RS		-0.22
Varity_R		0.050
gMVP		0.33

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.090		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: chr3-188933129;