Genetic Variant ASXL1:p.Val1297Leu (chr20-32436601-G-C) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_015338.6(ASXL1):c.3889G>C(p.Val1297Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign 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. V1297I) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 32)

Consequence

ASXL1
NM_015338.6 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.866

Publications

0 publications found

Variant links:

Genes affected

ASXL1 (HGNC:18318): (ASXL transcriptional regulator 1) This gene is similar to the Drosophila additional sex combs gene, which encodes a chromatin-binding protein required for normal determination of segment identity in the developing embryo. The protein is a member of the Polycomb group of proteins, which are necessary for the maintenance of stable repression of homeotic and other loci. The protein is thought to disrupt chromatin in localized areas, enhancing transcription of certain genes while repressing the transcription of other genes. The protein encoded by this gene functions as a ligand-dependent co-activator for retinoic acid receptor in cooperation with nuclear receptor coactivator 1. Mutations in this gene are associated with myelodysplastic syndromes and chronic myelomonocytic leukemia. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Sep 2009]

ASXL1 Gene-Disease associations (from GenCC):

Bohring-Opitz syndrome
Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: PanelApp Australia, Labcorp Genetics (formerly Invitae), Illumina, ClinGen, Laboratory for Molecular Medicine, G2P, Orphanet

ASXL1 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.06023687).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_015338.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ASXL1	NM_015338.6	MANE Select	c.3889G>C	p.Val1297Leu	missense	Exon 13 of 13	NP_056153.2
	ASXL1	NM_001363734.1		c.3706G>C	p.Val1236Leu	missense	Exon 12 of 12	NP_001350663.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
ASXL1	ENST00000375687.10	TSL:5 MANE Select	c.3889G>C	p.Val1297Leu	missense	Exon 13 of 13	ENSP00000364839.4
ASXL1	ENST00000306058.9	TSL:1	c.3874G>C	p.Val1292Leu	missense	Exon 12 of 12	ENSP00000305119.5
ASXL1	ENST00000646985.1		c.3706G>C	p.Val1236Leu	missense	Exon 12 of 12	ENSP00000495053.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

Cov.:

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.29

BayesDel_noAF

Benign

-0.66

CADD

Benign

(source)

DANN

Benign

0.97

DEOGEN2

Benign

0.082

Eigen

Benign

-0.74

Eigen_PC

Benign

-0.74

FATHMM_MKL

Benign

0.44

LIST_S2

Benign

0.82

M_CAP

Benign

0.0050

MetaRNN

Benign

0.060

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.7

PhyloP100

0.87

PrimateAI

Benign

0.28

PROVEAN

Benign

-0.87

REVEL

Benign

0.014

Sift

Benign

0.050

Sift4G

Benign

0.36

Polyphen

0.17

Vest4

0.074

MutPred

0.10

Loss of MoRF binding (P = 0.0914)

MVP

0.21

MPC

0.064

ClinPred

0.064

GERP RS

2.4

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.022

gMVP

0.19

Mutation Taster

=96/4

polymorphism

(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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over