1-186313690-A-G

Position:

chr1-186313690-A-G

Variant summary

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

The NM_005807.6(PRG4):c.4127A>G(p.Tyr1376Cys) variant causes a missense change. The variant allele was found at a frequency of 0.0000132 in 1,596,012 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000013 ( 0 hom. )

Consequence

PRG4
NM_005807.6 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 6.71

Variant links:

Genes affected

PRG4 (HGNC:9364): (proteoglycan 4) The protein encoded by this gene is a large proteoglycan that is synthesized by chondrocytes located at the surface of articular cartilage and by some synovial lining cells. This protein contains both chondroitin sulfate and keratan sulfate glycosaminoglycans. It functions as a boundary lubricant at the cartilage surface and contributes to the elastic absorption and energy dissipation of synovial fluid. Mutations in this gene result in camptodactyly-arthropathy-coxa vara-pericarditis syndrome. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Dec 2014]

PRG4 links:

TPR (HGNC:12017): (translocated promoter region, nuclear basket protein) This gene encodes a large coiled-coil protein that forms intranuclear filaments attached to the inner surface of nuclear pore complexes (NPCs). The protein directly interacts with several components of the NPC. It is required for the nuclear export of mRNAs and some proteins. Oncogenic fusions of the 5' end of this gene with several different kinase genes occur in some neoplasias. [provided by RefSeq, Jul 2008]

TPR links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

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/exons	MANE	Protein	UniProt
PRG4	NM_005807.6 linkuse as main transcript	c.4127A>G	p.Tyr1376Cys	missense_variant	13/13	ENST00000445192.7	NP_005798.3
TPR	NM_003292.3 linkuse as main transcript	c.*281T>C		3_prime_UTR_variant	51/51	ENST00000367478.9	NP_003283.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PRG4	ENST00000445192.7 linkuse as main transcript	c.4127A>G	p.Tyr1376Cys	missense_variant	13/13	5	NM_005807.6	ENSP00000399679	P2	Q92954-1
TPR	ENST00000367478.9 linkuse as main transcript	c.*281T>C		3_prime_UTR_variant	51/51	1	NM_003292.3	ENSP00000356448	P1	P12270-1

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152192

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000241

AC:

AN:

249154

Hom.:

AF XY:

0.0000222

AC XY:

AN XY:

134864

show subpopulations

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 SAS exome

AF:

0.000163

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000897

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000132

AC:

AN:

1443702

Hom.:

Cov.:

AF XY:

0.0000181

AC XY:

AN XY:

719412

show subpopulations

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:

0.000128

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000548

Gnomad4 OTH exome

AF:

0.0000335

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152310

Hom.:

Cov.:

AF XY:

0.0000268

AC XY:

AN XY:

74488

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000665

Hom.:

Bravo

AF:

0.0000189

ExAC

AF:

0.0000330

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Oct 26, 2021

The c.4127A>G (p.Y1376C) alteration is located in exon 13 (coding exon 12) of the PRG4 gene. This alteration results from a A to G substitution at nucleotide position 4127, causing the tyrosine (Y) at amino acid position 1376 to be replaced by a cysteine (C). 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

Pathogenic

0.71

BayesDel_addAF

Uncertain

0.10

BayesDel_noAF

Pathogenic

0.17

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.59

.;D;.;.

Eigen

Pathogenic

0.76

Eigen_PC

Pathogenic

0.76

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.91

D;D;D;D

M_CAP

Benign

0.029

MetaRNN

Uncertain

0.70

D;D;D;D

MetaSVM

Benign

-0.50

MutationAssessor

Uncertain

2.5

.;M;.;.

MutationTaster

Benign

1.0

D;D;D;D;D

PrimateAI

Uncertain

0.60

PROVEAN

Pathogenic

-8.3

.;D;D;D

REVEL

Uncertain

0.53

Sift

Uncertain

0.0010

.;D;D;D

Sift4G

Pathogenic

0.0010

D;D;D;D

Polyphen

1.0

.;D;D;D

Vest4

0.71

MVP

0.43

MPC

0.041

ClinPred

0.52

GERP RS

6.0

Varity_R

0.11

gMVP

0.86

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

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over