rs577303074

Variant summary

Our verdict is Benign. The variant received -14 ACMG points: 0P and 14B. BP4_StrongBP6_ModerateBS1BS2

The NM_003482.4(KMT2D):​c.13796C>T​(p.Ala4599Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000672 in 1,606,778 control chromosomes in the GnomAD database, with no homozygous occurrence. 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 (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A4599T) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000092 ( 0 hom., cov: 32)
Exomes 𝑓: 0.000065 ( 0 hom. )

Consequence

KMT2D
NM_003482.4 missense

Scores

1
17

Clinical Significance

Likely benign criteria provided, single submitter B:2O:1

Conservation

PhyloP100: 0.985

Publications

3 publications found
Variant links:
Genes affected
KMT2D (HGNC:7133): (lysine methyltransferase 2D) The protein encoded by this gene is a histone methyltransferase that methylates the Lys-4 position of histone H3. The encoded protein is part of a large protein complex called ASCOM, which has been shown to be a transcriptional regulator of the beta-globin and estrogen receptor genes. Mutations in this gene have been shown to be a cause of Kabuki syndrome. [provided by RefSeq, Oct 2010]
KMT2D Gene-Disease associations (from GenCC):
  • choanal atresia-athelia-hypothyroidism-delayed puberty-short stature syndrome
    Inheritance: AD Classification: DEFINITIVE, MODERATE Submitted by: Illumina, G2P
  • Kabuki syndrome 1
    Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: G2P, Laboratory for Molecular Medicine, ClinGen, Labcorp Genetics (formerly Invitae), Ambry Genetics
  • branchial arch abnormalities, choanal atresia, athelia, hearing loss, and hypothyroidism syndrome
    Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
  • Kabuki syndrome
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -14 ACMG points.

BP4
Computational evidence support a benign effect (MetaRNN=0.035268664).
BP6
Variant 12-49030644-G-A is Benign according to our data. Variant chr12-49030644-G-A is described in ClinVar as Likely_benign. ClinVar VariationId is 134724.Status of the report is criteria_provided_single_submitter, 1 stars.
BS1
Variant frequency is greater than expected in population sas. GnomAd4 allele frequency = 0.0000919 (14/152326) while in subpopulation SAS AF = 0.00124 (6/4828). AF 95% confidence interval is 0.000541. There are 0 homozygotes in GnomAd4. There are 9 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.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
KMT2DNM_003482.4 linkc.13796C>T p.Ala4599Val missense_variant Exon 42 of 55 ENST00000301067.12 NP_003473.3 O14686-1Q59FG6Q6PIA1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
KMT2DENST00000301067.12 linkc.13796C>T p.Ala4599Val missense_variant Exon 42 of 55 5 NM_003482.4 ENSP00000301067.7 O14686-1

Frequencies

GnomAD3 genomes
AF:
0.0000920
AC:
14
AN:
152208
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.000121
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00124
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000441
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.000173
AC:
42
AN:
242810
AF XY:
0.000181
show subpopulations
Gnomad AFR exome
AF:
0.0000658
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.000113
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000546
Gnomad OTH exome
AF:
0.000341
GnomAD4 exome
AF:
0.0000646
AC:
94
AN:
1454452
Hom.:
0
Cov.:
33
AF XY:
0.0000774
AC XY:
56
AN XY:
723152
show subpopulations
African (AFR)
AF:
0.0000605
AC:
2
AN:
33066
American (AMR)
AF:
0.00
AC:
0
AN:
43498
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
25774
East Asian (EAS)
AF:
0.0000253
AC:
1
AN:
39570
South Asian (SAS)
AF:
0.000771
AC:
66
AN:
85620
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
52782
Middle Eastern (MID)
AF:
0.000175
AC:
1
AN:
5712
European-Non Finnish (NFE)
AF:
0.0000153
AC:
17
AN:
1108404
Other (OTH)
AF:
0.000117
AC:
7
AN:
60026
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.491
Heterozygous variant carriers
0
5
10
15
20
25
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
4
8
12
16
20
<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:
14
AN:
152326
Hom.:
0
Cov.:
32
AF XY:
0.000121
AC XY:
9
AN XY:
74486
show subpopulations
African (AFR)
AF:
0.000120
AC:
5
AN:
41568
American (AMR)
AF:
0.00
AC:
0
AN:
15306
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3468
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5188
South Asian (SAS)
AF:
0.00124
AC:
6
AN:
4828
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10620
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
294
European-Non Finnish (NFE)
AF:
0.0000441
AC:
3
AN:
68028
Other (OTH)
AF:
0.00
AC:
0
AN:
2116
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.507
Heterozygous variant carriers
0
1
2
2
3
4
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Variant carriers
0
2
4
6
8
10
<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:
0.0000366
Hom.:
0
Bravo
AF:
0.0000529
ExAC
AF:
0.000190
AC:
23
Asia WGS
AF:
0.000289
AC:
1
AN:
3478
EpiCase
AF:
0.0000545
EpiControl
AF:
0.0000594

ClinVar

Significance: Likely benign
Submissions summary: Benign:2Other:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Kabuki syndrome Benign:1
Jan 20, 2025
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Likely benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

KMT2D-related disorder Benign:1
Nov 01, 2022
PreventionGenetics, part of Exact Sciences
Significance:Likely benign
Review Status:no assertion criteria provided
Collection Method:clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

not specified Other:1
Sep 19, 2013
ITMI
Significance:not provided
Review Status:no classification provided
Collection Method:reference population

- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.069
BayesDel_addAF
Benign
-0.46
T
BayesDel_noAF
Benign
-0.49
CADD
Benign
15
DANN
Benign
0.75
DEOGEN2
Benign
0.056
T
Eigen
Benign
-0.91
Eigen_PC
Benign
-0.83
FATHMM_MKL
Benign
0.39
N
LIST_S2
Benign
0.68
T
M_CAP
Uncertain
0.27
D
MetaRNN
Benign
0.035
T
MetaSVM
Benign
-0.77
T
MutationAssessor
Benign
-0.28
N
PhyloP100
0.98
PrimateAI
Benign
0.40
T
PROVEAN
Benign
-1.4
N
REVEL
Benign
0.24
Sift
Benign
0.15
T
Polyphen
0.0020
B
Vest4
0.13
MVP
0.19
MPC
0.15
ClinPred
0.010
T
GERP RS
2.4
PromoterAI
0.0017
Neutral
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.8
Varity_R
0.036
gMVP
0.067
Mutation Taster
=78/22
polymorphism

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

Other links and lift over

dbSNP: rs577303074; hg19: chr12-49424427; COSMIC: COSV56447231; COSMIC: COSV56447231; API