17-46923195-G-T

Variant names:

• chr17-46923195-G-T
• rs1174104260
• NM_004287.5:c.3G>T

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM2 PP3_Strong

The NM_001363851.2(GOSR2):​c.-463G>T variant causes a 5 prime UTR premature start codon gain change. The variant allele was found at a frequency of 0.000000717 in 1,394,166 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 Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 7.2e-7 (0 hom.)
• Consequence: GOSR2 NM_001363851.2 5_prime_UTR_premature_start_codon_gain
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.51

Genes affected

GOSR2 (HGNC:4431): (golgi SNAP receptor complex member 2) This gene encodes a trafficking membrane protein which transports proteins among the medial- and trans-Golgi compartments. Due to its chromosomal location and trafficking function, this gene may be involved in familial essential hypertension. [provided by RefSeq, Mar 2016]

ENSG00000262633 (HGNC:):

LRRC37A2 (HGNC:32404): (leucine rich repeat containing 37 member A2) Predicted to be integral component of membrane. [provided by Alliance of Genome Resources, Apr 2022]

GOSR2-DT (HGNC:55346): (GOSR2 divergent transcript)

ACMG classification

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.976

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
GOSR2	NM_004287.5	c.3G>T	p.Met1?	start_lost	Exon 1 of 6	ENST00000640051.2	NP_004278.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
GOSR2	ENST00000640051.2	c.3G>T	p.Met1?	start_lost	Exon 1 of 6	1	NM_004287.5	ENSP00000492751.1
ENSG00000262633	ENST00000571841.1	n.3G>T		non_coding_transcript_exon_variant	Exon 1 of 10	5		ENSP00000461460.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 7.17e-7 AC: 1 AN: 1394166 Hom.: 0 Cov.: 30 AF XY: 0.00000145 AC XY: 1 AN XY: 687936

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: 9.31e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Progressive myoclonic epilepsy Uncertain:1

Aug 22, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant is not present in population databases (gnomAD no frequency). This sequence change affects the initiator methionine of the GOSR2 mRNA. The next in-frame methionine is located at codon 19. Disruption of the initiator codon has been observed in individual(s) with clinical features of GOSR2-related conditions (PMID: 29855340). In at least one individual the data is consistent with being in trans (on the opposite chromosome) from a pathogenic variant. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.63	D
BayesDel_noAF	Pathogenic	0.30
CADD	Benign	23
DANN	Uncertain	1.0
DEOGEN2	Benign	0.24	.;.;.;.;.;.;T;.;.;.;.;.;.;.
Eigen	Uncertain	0.28
Eigen_PC	Uncertain	0.32
FATHMM_MKL	Uncertain	0.81	D
LIST_S2	Uncertain	0.90	D;D;D;D;D;D;D;D;D;D;D;D;D;D
M_CAP	Pathogenic	0.65	D
MetaRNN	Pathogenic	0.98	D;D;D;D;D;D;D;D;D;D;D;D;D;D
MetaSVM	Uncertain	-0.27	T
PROVEAN	Uncertain	-3.4	.;.;.;D;D;.;.;.;.;.;.;.;.;.
REVEL	Uncertain	0.55
Sift	Pathogenic	0.0	.;.;.;D;D;.;.;.;.;.;.;.;.;.
Sift4G	Pathogenic	0.0	.;.;.;D;D;D;.;.;.;.;D;.;.;.
Polyphen		0.89, 0.32	.;.;.;P;.;.;B;.;.;.;.;.;.;.
Vest4		0.78, 0.78, 0.79, 0.77
MutPred		0.83		Gain of catalytic residue at M1 (P = 0.0328);Gain of catalytic residue at M1 (P = 0.0328);Gain of catalytic residue at M1 (P = 0.0328);Gain of catalytic residue at M1 (P = 0.0328);Gain of catalytic residue at M1 (P = 0.0328);Gain of catalytic residue at M1 (P = 0.0328);Gain of catalytic residue at M1 (P = 0.0328);Gain of catalytic residue at M1 (P = 0.0328);Gain of catalytic residue at M1 (P = 0.0328);Gain of catalytic residue at M1 (P = 0.0328);Gain of catalytic residue at M1 (P = 0.0328);Gain of catalytic residue at M1 (P = 0.0328);Gain of catalytic residue at M1 (P = 0.0328);Gain of catalytic residue at M1 (P = 0.0328);
MVP		0.82
ClinPred		1.0	D
GERP RS		5.0
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.95
gMVP		0.44

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		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: rs1174104260; hg19: chr17-45000561;