6-107868215-T-C

Position:

• chr6-107868215-T-C

Variant summary

Our verdict is Benign. Variant got -9 ACMG points: 0P and 9B. BP4_Strong BS1_Supporting BS2

The NM_007214.5(SEC63):​c.*3489A>G variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000924 in 65,998 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: 𝑓 0.00092 (0 hom., cov: 31)
  • Failed GnomAD Quality Control
• Consequence: SEC63 NM_007214.5 3_prime_UTR
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.0440

Genes affected

SEC63 (HGNC:21082): (SEC63 homolog, protein translocation regulator) The Sec61 complex is the central component of the protein translocation apparatus of the endoplasmic reticulum (ER) membrane. The protein encoded by this gene and SEC62 protein are found to be associated with ribosome-free SEC61 complex. It is speculated that Sec61-Sec62-Sec63 may perform post-translational protein translocation into the ER. The Sec61-Sec62-Sec63 complex might also perform the backward transport of ER proteins that are subject to the ubiquitin-proteasome-dependent degradation pathway. The encoded protein is an integral membrane protein located in the rough ER. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Benign. Variant got -9 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.84).
• BS1: Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.000924 (61/65998) while in subpopulation NFE AF= 0.000975 (33/33860). AF 95% confidence interval is 0.000713. There are 0 homozygotes in gnomad4. There are 38 alleles in male gnomad4 subpopulation. Median coverage is 31. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting
• BS2: High AC in GnomAd4 at 61 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SEC63	NM_007214.5	c.*3489A>G		3_prime_UTR_variant	21/21	ENST00000369002.9
SEC63	XM_047418130.1	c.*3489A>G		3_prime_UTR_variant	21/21
SEC63	XM_047418131.1	c.*3489A>G		3_prime_UTR_variant	20/20

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SEC63	ENST00000369002.9	c.*3489A>G		3_prime_UTR_variant	21/21	1	NM_007214.5	P1

Frequencies

GnomAD3 genomes AF: 0.000924 AC: 61 AN: 65998 Hom.: 0 Cov.: 31

Gnomad AFR AF: 0.000392

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000395

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00501

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000975

Gnomad OTH AF: 0.00138

GnomAD4 exome Data not reliable, filtered out with message: AC0;AS_VQSR AC: 0 AN: 0 Hom.: 0 Cov.: 0 AC XY: 0 AN XY: 0

GnomAD4 genome AF: 0.000924 AC: 61 AN: 65998 Hom.: 0 Cov.: 31 AF XY: 0.00124 AC XY: 38 AN XY: 30740

Gnomad4 AFR AF: 0.000392

Gnomad4 AMR AF: 0.000395

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00501

Gnomad4 NFE AF: 0.000975

Gnomad4 OTH AF: 0.00138

Alfa AF: 0.000327 Hom.: 0

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Polycystic liver disease 2 Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Apr 27, 2017

This variant was observed as part of a predisposition screen in an ostensibly healthy population. A literature search was performed for the gene, cDNA change, and amino acid change (where applicable). No publications were found based on this search. Allele frequency data from public databases did not allow this variant to be ruled in or out of causing disease. Therefore, this variant is classified as a variant of unknown significance. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.84
CADD	Benign	1.3
DANN	Benign	0.59

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

Other links and lift over

dbSNP: rs1027018659; hg19: chr6-108189419;