10-27504350-C-T

Position:

chr10-27504350-C-T

Variant summary

Our verdict is Benign. Variant got -16 ACMG points: 0P and 16B. BP4_StrongBP6_Very_StrongBS2

The NM_021252.5(RAB18):c.-20C>T variant causes a 5 prime UTR premature start codon gain change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00088 in 1,568,688 control chromosomes in the GnomAD database, including 4 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0041 ( 3 hom., cov: 32)

Exomes 𝑓: 0.00054 ( 1 hom. )

Consequence

RAB18
NM_021252.5 5_prime_UTR_premature_start_codon_gain

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:2

Conservation

PhyloP100: -0.592

Variant links:

Genes affected

RAB18 (HGNC:14244): (RAB18, member RAS oncogene family) The protein encoded by this gene is a member of a family of Ras-related small GTPases that regulate membrane trafficking in organelles and transport vesicles. Knockdown studies is zebrafish suggest that this protein may have a role in eye and brain development. Mutations in this gene are associated with Warburg micro syndrome type 3. Alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Jan 2012]

RAB18 links:

RAB18 (HGNC:):

RAB18 links:

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -16 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.62).

BP6

Variant 10-27504350-C-T is Benign according to our data. Variant chr10-27504350-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 299813.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS2

High Homozygotes in GnomAd4 at 3 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
RAB18	NM_021252.5 linkuse as main transcript	c.-20C>T		5_prime_UTR_premature_start_codon_gain_variant	1/7	ENST00000356940.11	NP_067075.1	Q9NP72-1
RAB18	NM_021252.5 linkuse as main transcript	c.-20C>T		5_prime_UTR_variant	1/7	ENST00000356940.11	NP_067075.1	Q9NP72-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
RAB18	ENST00000356940 linkuse as main transcript	c.-20C>T		5_prime_UTR_premature_start_codon_gain_variant	1/7	1	NM_021252.5	ENSP00000349415.7		Q9NP72-1
RAB18	ENST00000356940 linkuse as main transcript	c.-20C>T		5_prime_UTR_variant	1/7	1	NM_021252.5	ENSP00000349415.7		Q9NP72-1

Frequencies

GnomAD3 genomes

AF:

0.00407

AC:

620

AN:

152206

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0138

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00209

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000162

Gnomad OTH

AF:

0.00239

GnomAD3 exomes

AF:

0.00124

AC:

227

AN:

182456

Hom.:

AF XY:

0.00100

AC XY:

AN XY:

96698

show subpopulations

Gnomad AFR exome

AF:

0.0160

Gnomad AMR exome

AF:

0.000651

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000124

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000233

Gnomad OTH exome

AF:

0.00185

GnomAD4 exome

AF:

0.000536

AC:

759

AN:

1416364

Hom.:

Cov.:

AF XY:

0.000507

AC XY:

355

AN XY:

699992

show subpopulations

Gnomad4 AFR exome

AF:

0.0157

Gnomad4 AMR exome

AF:

0.000920

Gnomad4 ASJ exome

AF:

0.0000396

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000186

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000881

Gnomad4 OTH exome

AF:

0.00134

GnomAD4 genome

AF:

0.00408

AC:

621

AN:

152324

Hom.:

Cov.:

AF XY:

0.00385

AC XY:

287

AN XY:

74490

show subpopulations

Gnomad4 AFR

AF:

0.0138

Gnomad4 AMR

AF:

0.00209

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000162

Gnomad4 OTH

AF:

0.00237

Alfa

AF:

0.00168

Hom.:

Bravo

AF:

0.00483

Asia WGS

AF:

0.00144

AC:

AN:

3478

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

GeneDx

Sep 11, 2017

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

Warburg micro syndrome 3

Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.62

CADD

Benign

DANN

Benign

0.89

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

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