dbSNP rs368666457: SIL1:p.Leu328Leu (chr5-138951216-G-A) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_ModerateBP6BP7

The NM_022464.5(SIL1):c.984C>T(p.Leu328Leu) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000277 in 1,608,820 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 Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00026 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00028 ( 0 hom. )

Consequence

SIL1
NM_022464.5 synonymous

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:3

Conservation

PhyloP100: 0.330

Variant links:

Genes affected

SIL1 (HGNC:24624): (SIL1 nucleotide exchange factor) This gene encodes a resident endoplasmic reticulum (ER), N-linked glycoprotein with an N-terminal ER targeting sequence, 2 putative N-glycosylation sites, and a C-terminal ER retention signal. This protein functions as a nucleotide exchange factor for another unfolded protein response protein. Mutations in this gene have been associated with Marinesco-Sjogren syndrome. Alternate transcriptional splice variants have been characterized. [provided by RefSeq, Jul 2008]

SIL1 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.42).

BP6

Variant 5-138951216-G-A is Benign according to our data. Variant chr5-138951216-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 199168.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=2, Benign=1, Uncertain_significance=1}.

BP7

Synonymous conserved (PhyloP=0.33 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SIL1	NM_022464.5 link	c.984C>T	p.Leu328Leu	synonymous_variant	Exon 9 of 10	ENST00000394817.7	NP_071909.1	Q9H173A0A0S2Z6B4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
SIL1	ENST00000394817.7 link	c.984C>T	p.Leu328Leu	synonymous_variant	Exon 9 of 10	1	NM_022464.5	ENSP00000378294.2	Q9H173
SIL1	ENST00000509534.5 link	c.1005C>T	p.Leu335Leu	synonymous_variant	Exon 10 of 11	5		ENSP00000426858.1	D6REA1
SIL1	ENST00000265195.9 link	c.984C>T	p.Leu328Leu	synonymous_variant	Exon 10 of 11	5		ENSP00000265195.5	Q9H173
SIL1	ENST00000515008.1 link	n.319C>T		non_coding_transcript_exon_variant	Exon 3 of 4	3

Frequencies

GnomAD3 genomes

AF:

0.000263

AC:

AN:

152212

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000724

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

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:

0.000485

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.000273

AC:

AN:

238252

Hom.:

AF XY:

0.000310

AC XY:

AN XY:

129050

show subpopulations

Gnomad AFR exome

AF:

0.0000671

Gnomad AMR exome

AF:

0.000148

Gnomad ASJ exome

AF:

0.000102

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000311

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000438

Gnomad OTH exome

AF:

0.000343

GnomAD4 exome

AF:

0.000279

AC:

406

AN:

1456608

Hom.:

Cov.:

AF XY:

0.000298

AC XY:

216

AN XY:

723954

show subpopulations

Gnomad4 AFR exome

AF:

0.0000300

Gnomad4 AMR exome

AF:

0.000158

Gnomad4 ASJ exome

AF:

0.0000384

Gnomad4 EAS exome

AF:

0.0000253

Gnomad4 SAS exome

AF:

0.000518

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000296

Gnomad4 OTH exome

AF:

0.000282

GnomAD4 genome

AF:

0.000263

AC:

AN:

152212

Hom.:

Cov.:

AF XY:

0.000242

AC XY:

AN XY:

74344

show subpopulations

Gnomad4 AFR

AF:

0.0000724

Gnomad4 AMR

AF:

0.000131

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000485

Gnomad4 OTH

AF:

0.000478

Alfa

AF:

0.000444

Hom.:

Bravo

AF:

0.000295

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:3

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:1Benign:1

Nov 23, 2014

Eurofins Ntd Llc (ga)

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Oct 16, 2018

GeneDx

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

not specified

Benign:1

Dec 05, 2019

Athena Diagnostics

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Marinesco-Sjögren syndrome

Benign:1

Nov 05, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.42

CADD

Benign

9.9

DANN

Benign

0.40

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