chr9-37422752-T-G

Variant names:

• chr9-37422752-T-G
• rs1554746097
• NM_012203.2:c.2T>G

Variant summary

Our verdict is Uncertain significance. Variant got 5 ACMG points: 5P and 0B. PVS1_Supporting PM2 PP5_Moderate

The NM_012203.2(GRHPR):​c.2T>G​(p.Met1?) variant causes a start lost change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000028 in 1,431,034 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 Likely pathogenic (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000028 (0 hom.)
• Consequence: GRHPR NM_012203.2 start_lost
• Clinical Significance: Likely pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: 3.11

Genes affected

GRHPR (HGNC:4570): (glyoxylate and hydroxypyruvate reductase) This gene encodes an enzyme with hydroxypyruvate reductase, glyoxylate reductase, and D-glycerate dehydrogenase enzymatic activities. The enzyme has widespread tissue expression and has a role in metabolism. Type II hyperoxaluria is caused by mutations in this gene. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 5 ACMG points.

• PVS1: Start lost variant, no pathogenic variants between lost start and next in-frame start position. Next in-frame start position is after 7 codons. Genomic position: 37422769. Lost 0.019 part of the original CDS.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 9-37422752-T-G is Pathogenic according to our data. Variant chr9-37422752-T-G is described in ClinVar as [Likely_pathogenic]. Clinvar id is 551406.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
GRHPR	NM_012203.2	c.2T>G	p.Met1?	start_lost	Exon 1 of 9	ENST00000318158.11	NP_036335.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
GRHPR	ENST00000318158.11	c.2T>G	p.Met1?	start_lost	Exon 1 of 9	1	NM_012203.2	ENSP00000313432.6

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000280 AC: 4 AN: 1431034 Hom.: 0 Cov.: 31 AF XY: 0.00000564 AC XY: 4 AN XY: 709488

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: 0.00000364

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:1

Revision: criteria provided, single submitter

Submissions by phenotype

Primary hyperoxaluria, type II Pathogenic:1

Apr 06, 2017

Counsyl

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.60	D
BayesDel_noAF	Pathogenic	0.14
CADD	Benign	21
DANN	Benign	0.96
DEOGEN2	Benign	0.015	T;T
Eigen	Benign	-0.099
Eigen_PC	Benign	-0.092
FATHMM_MKL	Uncertain	0.95	D
LIST_S2	Uncertain	0.90	D;D
M_CAP	Pathogenic	0.97	D
MetaRNN	Pathogenic	0.99	D;D
MetaSVM	Uncertain	-0.21	T
PROVEAN	Benign	-1.0	N;.
REVEL	Uncertain	0.57
Sift	Uncertain	0.0020	D;.
Sift4G	Uncertain	0.0020	D;D
Polyphen		0.36	B;.
Vest4		0.84
MutPred		0.97		Gain of methylation at M1 (P = 0.0335);Gain of methylation at M1 (P = 0.0335);
MVP		0.89
ClinPred		0.96	D
GERP RS		4.8
Varity_R		0.97
gMVP		0.62

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.080		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

Other links and lift over

dbSNP: rs1554746097; hg19: chr9-37422749;