2-25742105-T-A

Position:

• chr2-25742105-T-A

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_018263.6(ASXL2):​c.4232A>T​(p.Lys1411Ile) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. K1411R) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: ASXL2 NM_018263.6 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.94

Genes affected

ASXL2 (HGNC:23805): (ASXL transcriptional regulator 2) This gene encodes a member of a family of epigenetic regulators that bind various histone-modifying enzymes and are involved in the assembly of transcription factors at specific genomic loci. Naturally occurring mutations in this gene are associated with cancer in several tissue types (breast, bladder, pancreas, ovary, prostate, and blood). This gene plays an important role in neurodevelopment, cardiac function, adipogenesis, and osteoclastogenesis. [provided by RefSeq, Feb 2017]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ASXL2	NM_018263.6	c.4232A>T	p.Lys1411Ile	missense_variant	13/13	ENST00000435504.9
ASXL2	NM_001369346.1	c.4058A>T	p.Lys1353Ile	missense_variant	11/11
ASXL2	NM_001369347.1	c.3452A>T	p.Lys1151Ile	missense_variant	10/10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ASXL2	ENST00000435504.9	c.4232A>T	p.Lys1411Ile	missense_variant	13/13	5	NM_018263.6	P4
ASXL2	ENST00000336112.9	c.4229A>T	p.Lys1410Ile	missense_variant	12/12	1		A2
ASXL2	ENST00000404843.5	c.2681A>T	p.Lys894Ile	missense_variant	10/10	1		A2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

Apr 06, 2023

Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.97
BayesDel_addAF	Pathogenic	0.26	D
BayesDel_noAF	Pathogenic	0.14
CADD	Pathogenic	27
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.62	D;T;.
Eigen	Pathogenic	0.79
Eigen_PC	Pathogenic	0.79
FATHMM_MKL	Uncertain	0.95	D
LIST_S2	Uncertain	0.92	D;D;D
M_CAP	Uncertain	0.18	D
MetaRNN	Uncertain	0.63	D;D;D
MetaSVM	Pathogenic	0.80	D
MutationAssessor	Uncertain	2.2	M;.;.
MutationTaster	Benign	0.77	D;D;D;D
PrimateAI	Pathogenic	0.82	D
PROVEAN	Pathogenic	-5.5	D;D;D
REVEL	Uncertain	0.40
Sift	Pathogenic	0.0	D;D;D
Sift4G	Uncertain	0.0030	D;D;D
Polyphen		1.0	D;.;D
Vest4		0.64
MutPred		0.41		Loss of methylation at K1411 (P = 0.0018);.;.;
MVP		0.65
MPC		0.79
ClinPred		0.99	D
GERP RS		6.2
Varity_R		0.79
gMVP		0.68

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: chr2-25964974;