rs128621190

Variant names:

• chrX-101370051-A-T
• rs128621190
• NM_000061.3:c.338T>A

Variant summary

Our verdict is Pathogenic. The variant received 10 ACMG points: 10P and 0B. PM1 PM2 PP2 PP3_Strong PP5

The NM_000061.3(BTK):​c.338T>A​(p.Val113Asp) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V113I) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 22)
• Consequence: BTK NM_000061.3 missense
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 8.28
• Publications: 5 publications found

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: Labcorp Genetics (formerly Invitae), ClinGen
• short stature due to isolated growth hormone deficiency with X-linked hypogammaglobulinemia

  Inheritance: XL Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Pathogenic. The variant received 10 ACMG points.

• PM1: In a hotspot region, there are 3 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 6 uncertain in NM_000061.3
• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 90 curated pathogenic missense variants (we use a threshold of 10). The gene has 26 curated benign missense variants. Gene score misZ: 4.0394 (above the threshold of 3.09). Trascript score misZ: NaN (below the threshold of 3.09). GenCC associations: The gene is linked to Bruton-type agammaglobulinemia, short stature due to isolated growth hormone deficiency with X-linked hypogammaglobulinemia, isolated growth hormone deficiency type III.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.945
• PP5: Variant X-101370051-A-T is Pathogenic according to our data. Variant chrX-101370051-A-T is described in ClinVar as Pathogenic. ClinVar VariationId is 11356.Status of the report is no_assertion_criteria_provided, 0 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

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	BTK	NM_000061.3	MANE Select	c.338T>A	p.Val113Asp	missense	Exon 5 of 19	NP_000052.1	Q06187-1
	BTK	NM_001287344.2		c.440T>A	p.Val147Asp	missense	Exon 5 of 19	NP_001274273.1	Q06187-2
	BTK	NM_001287345.2		c.338T>A	p.Val113Asp	missense	Exon 6 of 17	NP_001274274.1	Q5JY90

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	BTK	ENST00000308731.8	TSL:1 MANE Select	c.338T>A	p.Val113Asp	missense	Exon 5 of 19	ENSP00000308176.8	Q06187-1
	BTK	ENST00000621635.4	TSL:1	c.440T>A	p.Val147Asp	missense	Exon 5 of 19	ENSP00000483570.1	Q06187-2
	BTK	ENST00000944957.1		c.338T>A	p.Val113Asp	missense	Exon 5 of 19	ENSP00000615016.1

Frequencies

GnomAD3 genomes Cov.: 22

GnomAD4 exome Cov.: 29

GnomAD4 genome Cov.: 22

ClinVar

ClinVar submissions

Significance: Pathogenic

Revision: no assertion criteria provided

Pathogenic	VUS	Benign	Condition
1	-	-	X-linked agammaglobulinemia (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.66	D
BayesDel_noAF	Pathogenic	0.70
CADD	Pathogenic	28
DANN	Uncertain	0.99
DEOGEN2	Pathogenic	0.84	D
FATHMM_MKL	Pathogenic	1.0	D
LIST_S2	Uncertain	0.95	D
M_CAP	Pathogenic	0.85	D
MetaRNN	Pathogenic	0.95	D
MetaSVM	Pathogenic	1.0	D
MutationAssessor	Uncertain	2.9	M
PhyloP100		8.3
PrimateAI	Pathogenic	0.84	D
PROVEAN	Pathogenic	-6.1	D
REVEL	Pathogenic	0.97
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0	D
Polyphen		1.0	D
Vest4		0.91
MutPred		0.74		Loss of catalytic residue at V113 (P = 0.0045)
MVP		1.0
MPC		3.1
ClinPred		1.0	D
GERP RS		5.0
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.99
gMVP		1.0
Mutation Taster		=6/94	disease causing (ClinVar)

Splicing

Name	Calibrated prediction	Score	Prediction
Splicevardb		2.0
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

Other links and lift over

dbSNP: rs128621190; hg19: chrX-100625039;