Variant X-101349664-C-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_000061.3(BTK):c.*221G>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 0.00115 in 421,263 control chromosomes in the GnomAD database, including 6 homozygotes. There are 120 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

Frequency

Genomes: 𝑓 0.0032 ( 4 hom., 91 hem., cov: 22)

Exomes 𝑓: 0.00043 ( 2 hom. 29 hem. )

Consequence

BTK
NM_000061.3 3_prime_UTR

Scores

Clinical Significance

Benign criteria provided, single submitter B:2

Conservation

PhyloP100: -0.190

Variant links:

Genes affected

BTK (HGNC:1133): (Bruton tyrosine kinase) The protein encoded by this gene plays a crucial role in B-cell development. Mutations in this gene cause X-linked agammaglobulinemia type 1, which is an immunodeficiency characterized by the failure to produce mature B lymphocytes, and associated with a failure of Ig heavy chain rearrangement. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Dec 2013]

BTK 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=-0.86).

BP6

Variant X-101349664-C-A is Benign according to our data. Variant chrX-101349664-C-A is described in ClinVar as [Benign]. Clinvar id is 912392.Status of the report is criteria_provided_single_submitter, 1 stars.

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00316 (352/111390) while in subpopulation AFR AF= 0.0112 (344/30618). AF 95% confidence interval is 0.0103. There are 4 homozygotes in gnomad4. There are 91 alleles in male gnomad4 subpopulation. Median coverage is 22. This position pass quality control queck.

BS2

High Homozygotes in GnomAd4 at 4 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	Effect	#exon/exons	MANE	Protein
BTK	NM_000061.3 linkuse as main transcript	c.*221G>T	3_prime_UTR_variant	19/19	ENST00000308731.8	NP_000052.1
BTK	NM_001287344.2 linkuse as main transcript	c.*221G>T	3_prime_UTR_variant	19/19		NP_001274273.1
BTK	NM_001287345.2 linkuse as main transcript	c.*221G>T	3_prime_UTR_variant	17/17		NP_001274274.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
BTK	ENST00000308731.8 linkuse as main transcript	c.*221G>T		3_prime_UTR_variant	19/19	1	NM_000061.3	ENSP00000308176	P3	Q06187-1

Frequencies

GnomAD3 genomes

AF:

0.00316

AC:

352

AN:

111336

Hom.:

Cov.:

AF XY:

0.00271

AC XY:

AN XY:

33528

show subpopulations

Gnomad AFR

AF:

0.0113

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000578

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000378

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.000670

GnomAD4 exome

AF:

0.000426

AC:

132

AN:

309873

Hom.:

Cov.:

AF XY:

0.000302

AC XY:

AN XY:

95871

show subpopulations

Gnomad4 AFR exome

AF:

0.0119

Gnomad4 AMR exome

AF:

0.000702

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:

0.00000532

Gnomad4 OTH exome

AF:

0.000212

GnomAD4 genome

AF:

0.00316

AC:

352

AN:

111390

Hom.:

Cov.:

AF XY:

0.00271

AC XY:

AN XY:

33592

show subpopulations

Gnomad4 AFR

AF:

0.0112

Gnomad4 AMR

AF:

0.000578

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000380

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.000662

Alfa

AF:

0.00108

Hom.:

Bravo

AF:

0.00359

ClinVar

Significance: Benign

Submissions summary: Benign:2

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

X-linked agammaglobulinemia with growth hormone deficiency

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. -

X-linked agammaglobulinemia

Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 2018

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.86

CADD

Benign

1.4

DANN

Benign

0.74

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.0

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