Variant X-155258858-T-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 0P and 14B. BP4_StrongBP6_ModerateBS1BS2

The NM_171998.4(RAB39B):c.*1945A>T variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00714 in 112,436 control chromosomes in the GnomAD database, including 7 homozygotes. There are 205 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

Frequency

Genomes: 𝑓 0.0071 ( 7 hom., 205 hem., cov: 23)

Exomes 𝑓: 0.0 ( 0 hom. 0 hem. )

Failed GnomAD Quality Control

Consequence

RAB39B
NM_171998.4 3_prime_UTR

Scores

Clinical Significance

Benign criteria provided, single submitter B:1

Conservation

PhyloP100: 3.50

Variant links:

Genes affected

RAB39B (HGNC:16499): (RAB39B, member RAS oncogene family) This gene encodes a member of the Rab family of proteins. Rab proteins are small GTPases that are involved in vesicular trafficking. Mutations in this gene are associated with X-linked cognitive disability. [provided by RefSeq, Aug 2013]

RAB39B links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -14 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.85).

BP6

Variant X-155258858-T-A is Benign according to our data. Variant chrX-155258858-T-A is described in ClinVar as [Benign]. Clinvar id is 368129.Status of the report is criteria_provided_single_submitter, 1 stars.

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00714 (803/112436) while in subpopulation AFR AF= 0.0244 (755/30951). AF 95% confidence interval is 0.023. There are 7 homozygotes in gnomad4. There are 205 alleles in male gnomad4 subpopulation. Median coverage is 23. This position pass quality control queck.

BS2

High Homozygotes in GnomAd4 at 7 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
RAB39B	NM_171998.4 linkuse as main transcript	c.*1945A>T		3_prime_UTR_variant	2/2	ENST00000369454.4	NP_741995.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
RAB39B	ENST00000369454.4 linkuse as main transcript	c.*1945A>T		3_prime_UTR_variant	2/2	1	NM_171998.4	ENSP00000358466	P1

Frequencies

GnomAD3 genomes

AF:

0.00710

AC:

798

AN:

112382

Hom.:

Cov.:

AF XY:

0.00585

AC XY:

202

AN XY:

34528

show subpopulations

Gnomad AFR

AF:

0.0243

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00245

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:

0.000169

Gnomad OTH

AF:

0.00859

GnomAD4 exome

Data not reliable, filtered out with message: AC0

AF:

0.00

AC:

AN:

Hom.:

Cov.:

AC XY:

AN XY:

Gnomad4 NFE exome

AF:

0.00

GnomAD4 genome

AF:

0.00714

AC:

803

AN:

112436

Hom.:

Cov.:

AF XY:

0.00593

AC XY:

205

AN XY:

34592

show subpopulations

Gnomad4 AFR

AF:

0.0244

Gnomad4 AMR

AF:

0.00244

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000169

Gnomad4 OTH

AF:

0.00849

Alfa

AF:

0.00605

Hom.:

Bravo

AF:

0.00881

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Intellectual disability, X-linked 72

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

-0.85

CADD

Benign

4.4

DANN

Benign

0.47

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