3-49030567-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 5 ACMG points: 5P and 0B. PVS1_Moderate PM2 PP5

The NM_198880.3(QRICH1):c.2216G>A(p.Trp739Ter) variant causes a stop gained change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

• Frequency: Genomes: not found (cov: 32)
• Consequence: QRICH1 NM_198880.3 stop_gained
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:1 U:1
• Conservation: PhyloP100: 7.48

Genes affected

QRICH1 (HGNC:24713): (glutamine rich 1) Enables DNA binding activity. Involved in several processes, including PERK-mediated unfolded protein response; intrinsic apoptotic signaling pathway in response to endoplasmic reticulum stress; and positive regulation of transcription, DNA-templated. Located in nucleoplasm. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Uncertain_significance. Variant got 5 ACMG points.

• PVS1: Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant is located in the 3'-most exon, not predicted to undergo nonsense mediated mRNA decay. Fraction of 0.0493 CDS is truncated, and there are 3 pathogenic variants in the truncated region.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 3-49030567-C-T is Pathogenic according to our data. Variant chr3-49030567-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 1329931.We mark this variant Likely_pathogenic, oryginal submissions are: {Uncertain_significance=1, Pathogenic=1}. Variant chr3-49030567-C-T is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
QRICH1	NM_198880.3	c.2216G>A	p.Trp739Ter	stop_gained	10/10	ENST00000395443.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
QRICH1	ENST00000395443.7	c.2216G>A	p.Trp739Ter	stop_gained	10/10	1	NM_198880.3	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Pathogenic:1 Uncertain:1

Revision: criteria provided, conflicting classifications

Submissions by phenotype

Ververi-Brady syndrome Pathogenic:1 Uncertain:1

Uncertain significance, criteria provided, single submitter	clinical testing	Victorian Clinical Genetics Services, Murdoch Childrens Research Institute	May 21, 2020	A heterozygous nonsense variant, NM_017730.3(QRICH1):c.2216G>A, has been identified in exon 11 of 11 of the QRICH1 gene. This nonsense variant is predicted to create a change of a tryptophan to a stop at amino acid position 739 of the protein; NP_060200.2(QRICH1):p.(Trp739*), resulting in loss of protein function through truncation, including part of the uncharacterised DUF3504 domain. The variant is absent in population databases (gnomAD). This variant has not been previously reported in clinical cases and no pathogenic variants have been reported downstream (ClinVar, Decipher). Analysis of parental samples indicated that this variant is de novo. Based on the information available at the time of curation, this variant has been classified as a VUS with POTENTIAL CLINICAL RELEVANCE. -
Pathogenic, criteria provided, single submitter	research	Institute of Human Genetics, University of Leipzig Medical Center	Dec 21, 2021	- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.57	D
BayesDel_noAF	Pathogenic	0.59
Cadd	Pathogenic	41
Dann	Uncertain	0.99
Eigen	Pathogenic	0.83
Eigen_PC	Pathogenic	0.69
FATHMM_MKL	Uncertain	0.95	D
MutationTaster	Benign	1.0	D;D;D
Vest4		0.37
GERP RS		4.4
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7

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: chr3-49068000;