chr20-32436601-G-A

Variant names:

Variant summary

Our verdict is Benign. The variant received -17 ACMG points: 0P and 17B. BP4_StrongBP6_Very_StrongBS1BS2_Supporting

The NM_015338.6(ASXL1):c.3889G>A(p.Val1297Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000165 in 1,614,208 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.00056 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00012 ( 1 hom. )

Consequence

ASXL1
NM_015338.6 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:5O:1

Conservation

PhyloP100: 0.866

Publications

7 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:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -17 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.006172359).

BP6

Variant 20-32436601-G-A is Benign according to our data. Variant chr20-32436601-G-A is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 133597.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population afr. GnomAdExome4 allele frequency = 0.000125 (182/1461850) while in subpopulation AFR AF = 0.00227 (76/33480). AF 95% confidence interval is 0.00186. There are 1 homozygotes in GnomAdExome4. There are 86 alleles in the male GnomAdExome4 subpopulation. Median coverage is 41. This position passed quality control check.

BS2

High AC in GnomAd4 at 85 AD gene. Variant has AC lower than other variant known as pathogenic in the gene, so the strength is limited to Supporting.

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>A	p.Val1297Ile	missense	Exon 13 of 13	NP_056153.2
	ASXL1	NM_001363734.1		c.3706G>A	p.Val1236Ile	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>A	p.Val1297Ile	missense	Exon 13 of 13	ENSP00000364839.4
ASXL1	ENST00000306058.9	TSL:1	c.3874G>A	p.Val1292Ile	missense	Exon 12 of 12	ENSP00000305119.5
ASXL1	ENST00000646985.1		c.3706G>A	p.Val1236Ile	missense	Exon 12 of 12	ENSP00000495053.1

Frequencies

GnomAD3 genomes

AF:

0.000558

AC:

AN:

152240

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00174

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.0000882

Gnomad OTH

AF:

0.00144

GnomAD2 exomes

AF:

0.000215

AC:

AN:

251482

AF XY:

0.000199

show subpopulations

Gnomad AFR exome

AF:

0.00148

Gnomad AMR exome

AF:

0.000549

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000879

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000124

AC:

182

AN:

1461850

Hom.:

Cov.:

AF XY:

0.000118

AC XY:

AN XY:

727232

show subpopulations

African (AFR)

AF:

0.00227

AC:

AN:

33480

American (AMR)

AF:

0.000492

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.0000116

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53378

Middle Eastern (MID)

AF:

0.000347

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000531

AC:

AN:

1112012

Other (OTH)

AF:

0.000364

AC:

AN:

60394

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.488

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.000558

AC:

AN:

152358

Hom.:

Cov.:

AF XY:

0.000537

AC XY:

AN XY:

74502

show subpopulations

African (AFR)

AF:

0.00176

AC:

AN:

41586

American (AMR)

AF:

0.000131

AC:

AN:

15310

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5188

South Asian (SAS)

AF:

0.00

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10622

Middle Eastern (MID)

AF:

0.00340

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000882

AC:

AN:

68034

Other (OTH)

AF:

0.00142

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.504

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000334

Hom.:

Bravo

AF:

0.000631

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.00

AC:

ESP6500AA

AF:

0.000908

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000181

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

EpiCase

AF:

0.00

EpiControl

AF:

0.000119

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:5Other:1

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:4

Breakthrough Genomics, Breakthrough Genomics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:not provided

May 01, 2025

CeGaT Center for Human Genetics Tuebingen

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

ASXL1: BP4, BS2

Jan 28, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Oct 11, 2019

GeneDx

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Bohring-Opitz syndrome

Benign:1

Dec 05, 2021

Genome-Nilou Lab

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

not specified

Other:1

Sep 19, 2013

ITMI

Significance:not provided

Review Status:no classification provided

Collection Method:reference population

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.089

BayesDel_addAF

Benign

-0.64

BayesDel_noAF

Benign

-0.72

CADD

Benign

(source)

DANN

Benign

0.97

DEOGEN2

Benign

0.057

Eigen

Benign

-0.62

Eigen_PC

Benign

-0.65

FATHMM_MKL

Benign

0.28

LIST_S2

Benign

0.81

M_CAP

Benign

0.0057

MetaRNN

Benign

0.0062

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.7

PhyloP100

0.87

PrimateAI

Benign

0.27

PROVEAN

Benign

-0.61

REVEL

Benign

0.022

Sift

Uncertain

0.023

Sift4G

Benign

0.22

Polyphen

0.50

Vest4

0.032

MVP

0.31

MPC

0.050

ClinPred

0.0092

GERP RS

2.4

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.013

gMVP

0.11

Mutation Taster

=95/5

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over