Genetic Variant KANSL1:p.Asp744His (chr17-46039189-C-G) – ACMG Classification: Benign (-20 pts)

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_015443.4(KANSL1):c.2230G>C(p.Asp744His) variant causes a missense change. The variant allele was found at a frequency of 0.0000834 in 1,595,080 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★). Synonymous variant affecting the same amino acid position (i.e. D744D) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000092 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000082 ( 0 hom. )

Consequence

KANSL1
NM_015443.4 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: 4.18

Publications

2 publications found

Variant links:

Genes affected

KANSL1 (HGNC:24565): (KAT8 regulatory NSL complex subunit 1) This gene encodes a nuclear protein that is a subunit of two protein complexes involved with histone acetylation, the MLL1 complex and the NSL1 complex. The encoded protein has been implicated in a variety of cellular processes including enhancer regulation, cell proliferation, and mitosis. Mutations in this gene are associated with Koolen-de Vries Syndrome. [provided by RefSeq, May 2022]

KANSL1 Gene-Disease associations (from GenCC):

Koolen-de Vries syndrome
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, G2P, Labcorp Genetics (formerly Invitae), ClinGen
Koolen-de Vries syndrome due to a point mutation
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

KANSL1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.022640526).

BP6

Variant 17-46039189-C-G is Benign according to our data. Variant chr17-46039189-C-G is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 238624.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population eas. GnomAd4 allele frequency = 0.0000919 (14/152322) while in subpopulation EAS AF = 0.00116 (6/5178). AF 95% confidence interval is 0.000505. There are 0 homozygotes in GnomAd4. There are 5 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High AC in GnomAd4 at 14 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_015443.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
KANSL1	NM_015443.4	MANE Select	c.2230G>C	p.Asp744His	missense	Exon 9 of 15	NP_056258.1
KANSL1	NM_001193466.2		c.2230G>C	p.Asp744His	missense	Exon 9 of 15	NP_001180395.1
KANSL1	NM_001379198.1		c.2230G>C	p.Asp744His	missense	Exon 10 of 16	NP_001366127.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
KANSL1	ENST00000432791.7	TSL:1 MANE Select	c.2230G>C	p.Asp744His	missense	Exon 9 of 15	ENSP00000387393.3
KANSL1	ENST00000262419.10	TSL:1	c.2230G>C	p.Asp744His	missense	Exon 9 of 15	ENSP00000262419.6
KANSL1	ENST00000572218.5	TSL:1	n.6447G>C		non_coding_transcript_exon	Exon 2 of 8

Frequencies

GnomAD3 genomes

AF:

0.0000920

AC:

AN:

152204

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00116

Gnomad SAS

AF:

0.000621

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000735

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000196

AC:

AN:

234240

AF XY:

0.000165

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00193

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000830

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000825

AC:

119

AN:

1442758

Hom.:

Cov.:

AF XY:

0.0000822

AC XY:

AN XY:

717374

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

32220

American (AMR)

AF:

0.00

AC:

AN:

38552

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25296

East Asian (EAS)

AF:

0.00153

AC:

AN:

39312

South Asian (SAS)

AF:

0.000179

AC:

AN:

83680

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53288

Middle Eastern (MID)

AF:

0.000184

AC:

AN:

5442

European-Non Finnish (NFE)

AF:

0.0000317

AC:

AN:

1105472

Other (OTH)

AF:

0.000134

AC:

AN:

59496

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.493

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome 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

GnomAD4 genome

AF:

0.0000919

AC:

AN:

152322

Hom.:

Cov.:

AF XY:

0.0000671

AC XY:

AN XY:

74484

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41580

American (AMR)

AF:

0.00

AC:

AN:

15306

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00116

AC:

AN:

5178

South Asian (SAS)

AF:

0.000622

AC:

AN:

4824

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10616

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000735

AC:

AN:

68026

Other (OTH)

AF:

0.00

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.496

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:

0.0000609

Hom.:

Bravo

AF:

0.000106

ExAC

AF:

0.000198

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

EpiCase

AF:

0.0000547

EpiControl

AF:

0.00

ClinVar

ClinVar submissions as Germline

Significance:Benign/Likely benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

Koolen-de Vries syndrome (2)

not provided (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.29

BayesDel_addAF

Benign

-0.26

BayesDel_noAF

Benign

-0.16

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

Eigen

Uncertain

0.60

Eigen_PC

Uncertain

0.66

FATHMM_MKL

Uncertain

0.95

LIST_S2

Benign

0.84

M_CAP

Benign

0.016

MetaRNN

Benign

0.023

MetaSVM

Benign

-1.1

PhyloP100

4.2

PrimateAI

Uncertain

0.61

PROVEAN

Benign

-1.7

REVEL

Benign

0.17

Sift

Uncertain

0.0060

Sift4G

Uncertain

0.046

Vest4

0.42

MVP

0.29

MPC

1.4

ClinPred

0.072

GERP RS

5.9

PromoterAI

0.0067

Neutral

(source)

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

gMVP

0.33

Mutation Taster

=76/24

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

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over