Variant summary

Our verdict is Pathogenic. The variant received 12 ACMG points: 12P and 0B. PVS1PM2PP5_Moderate

The NM_000061.3(BTK):c.389delA(p.Asn130ThrfsTer2) variant causes a frameshift, splice region change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. 1/1 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Pathogenic (★). Synonymous variant affecting the same amino acid position (i.e. N130N) has been classified as Uncertain significance. Variant results in nonsense mediated mRNA decay.

Frequency

Genomes: not found (cov: 23)

Exomes 𝑓: 0.0 ( 0 hom. 0 hem. )

Failed GnomAD Quality Control

Consequence

BTK
NM_000061.3 frameshift, splice_region

Scores

Not classified

Clinical Significance

Pathogenic criteria provided, single submitter P:2

Conservation

PhyloP100: 2.63

Publications

0 publications found

Variant links:

COSMIC-nc: COSV58120468

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 Gene-Disease associations (from GenCC):

Bruton-type agammaglobulinemia
Inheritance: XL Classification: DEFINITIVE, SUPPORTIVE Submitted by: Myriad Women’s Health, Orphanet, ClinGen
isolated growth hormone deficiency type III
Inheritance: XL Classification: STRONG, NO_KNOWN Submitted by: ClinGen, Labcorp Genetics (formerly Invitae)
short stature due to isolated growth hormone deficiency with X-linked hypogammaglobulinemia
Inheritance: XL Classification: SUPPORTIVE Submitted by: Orphanet

BTK links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Pathogenic. The variant received 12 ACMG points.

PVS1

Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.

PM2

Very rare variant in population databases, with high coverage;

PP5

Variant X-101369999-GT-G is Pathogenic according to our data. Variant chrX-101369999-GT-G is described in ClinVar as Pathogenic. ClinVar VariationId is 11357.Status of the report is criteria_provided_single_submitter, 1 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000061.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
BTK	NM_000061.3	MANE Select	c.389delA	p.Asn130ThrfsTer2	frameshift splice_region	Exon 5 of 19	NP_000052.1
BTK	NM_001287344.2		c.491delA	p.Asn164ThrfsTer2	frameshift splice_region	Exon 5 of 19	NP_001274273.1
BTK	NM_001287345.2		c.389delA	p.Asn130ThrfsTer2	frameshift splice_region	Exon 6 of 17	NP_001274274.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
BTK	ENST00000308731.8	TSL:1 MANE Select	c.389delA	p.Asn130ThrfsTer2	frameshift splice_region	Exon 5 of 19	ENSP00000308176.8
BTK	ENST00000621635.4	TSL:1	c.491delA	p.Asn164ThrfsTer2	frameshift splice_region	Exon 5 of 19	ENSP00000483570.1
BTK	ENST00000695614.1		c.389delA	p.Asn130ThrfsTer2	frameshift splice_region	Exon 5 of 19	ENSP00000512053.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

Data not reliable, filtered out with message: AC0

AF:

0.00

AC:

AN:

1093038

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

358838

African (AFR)

AF:

0.00

AC:

AN:

26302

American (AMR)

AF:

0.00

AC:

AN:

35172

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

19323

East Asian (EAS)

AF:

0.00

AC:

AN:

30134

South Asian (SAS)

AF:

0.00

AC:

AN:

53871

European-Finnish (FIN)

AF:

0.00

AC:

AN:

40378

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4122

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

837816

Other (OTH)

AF:

0.00

AC:

AN:

45920

GnomAD4 genome

Cov.:

ClinVar

ClinVar submissions as Germline

Significance:Pathogenic

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

X-linked agammaglobulinemia (1)

X-linked agammaglobulinemia with growth hormone deficiency (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

PhyloP100

2.6

Mutation Taster

=0/200

disease causing (ClinVar)

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

rs864321664

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

ClinVar

ClinVar submissions as Germline

Computational scores

Splicing

Publications

Other links and lift over