rs1057519825

Positions:

• chrX-101356176-C-A
• chrX-101356176-C-G
• chrX-101356176-C-T

Variant summary

Our verdict is Pathogenic. Variant got 11 ACMG points: 11P and 0B. PM1 PM2 PM5 PP2 PP3_Strong

The NM_000061.3(BTK):​c.1442G>T​(p.Cys481Phe) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. C481S) has been classified as Likely pathogenic.

• Frequency: Genomes: not found (cov: 22)
• Consequence: BTK NM_000061.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 6.17

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]

ACMG classification

Verdict is Pathogenic. Variant got 11 ACMG points.

• PM1: In a domain Protein kinase (size 253) in uniprot entity BTK_HUMAN there are 107 pathogenic changes around while only 6 benign (95%) in NM_000061.3
• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chrX-101356176-C-G is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 376203.We mark this variant Likely_pathogenic, oryginal submissions are: {Uncertain_significance=2, Pathogenic=1}.
• PP2: Missense variant in gene, where missense usually causes diseases (based on misZ statistic), BTK. . Gene score misZ 4.0394 (greater than the threshold 3.09). GenCC has associacion of gene with short stature due to isolated growth hormone deficiency with X-linked hypogammaglobulinemia, Bruton-type agammaglobulinemia, isolated growth hormone deficiency type III.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.958

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
BTK	NM_000061.3	c.1442G>T	p.Cys481Phe	missense_variant	15/19	ENST00000308731.8
BTK	NM_001287344.2	c.1544G>T	p.Cys515Phe	missense_variant	15/19
BTK	NM_001287345.2	c.1039-1482G>T		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
BTK	ENST00000308731.8	c.1442G>T	p.Cys481Phe	missense_variant	15/19	1	NM_000061.3	P3

Frequencies

GnomAD3 genomes Cov.: 22

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 22

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.98
BayesDel_addAF	Pathogenic	0.54	D
BayesDel_noAF	Pathogenic	0.54
CADD	Pathogenic	29
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.78	D;.;D
FATHMM_MKL	Pathogenic	0.97	D
LIST_S2	Uncertain	0.96	D;D;D
M_CAP	Pathogenic	0.87	D
MetaRNN	Pathogenic	0.96	D;D;D
MetaSVM	Uncertain	0.69	D
MutationAssessor	Uncertain	2.5	.;.;M
MutationTaster	Benign	1.0	D;D
PrimateAI	Uncertain	0.79	T
PROVEAN	Pathogenic	-8.8	.;.;D
REVEL	Pathogenic	0.86
Sift	Uncertain	0.0010	.;.;D
Sift4G	Pathogenic	0.0010	D;D;D
Polyphen		1.0	.;.;D
Vest4		0.83
MutPred		0.70		Loss of catalytic residue at L482 (P = 0.0165);.;Loss of catalytic residue at L482 (P = 0.0165);
MVP		1.0
MPC		3.2
ClinPred		1.0	D
GERP RS		5.6
Varity_R		1.0
gMVP		0.99

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

No publications associated with this variant yet.

Other links and lift over

hg19: chrX-100611164; COSMIC: COSV58122516; COSMIC: COSV58122516;