rs754060706

Variant summary

Our verdict is Benign. The variant received -7 ACMG points: 0P and 7B. BP4_ModerateBP6BS2

The NM_003482.4(KMT2D):​c.7366C>T​(p.Arg2456Cys) variant causes a missense change. The variant allele was found at a frequency of 0.0000179 in 1,563,524 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 Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R2456H) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000079 ( 0 hom., cov: 32)
Exomes 𝑓: 0.000011 ( 0 hom. )

Consequence

KMT2D
NM_003482.4 missense

Scores

6
8
4

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:1

Conservation

PhyloP100: 4.41

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 -7 ACMG points.

BP4
Computational evidence support a benign effect (MetaRNN=0.17305553).
BP6
Variant 12-49040404-G-A is Benign according to our data. Variant chr12-49040404-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 547444.
BS2
High AC in GnomAd4 at 12 AD gene.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
KMT2DNM_003482.4 linkc.7366C>T p.Arg2456Cys missense_variant Exon 32 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.7366C>T p.Arg2456Cys missense_variant Exon 32 of 55 5 NM_003482.4 ENSP00000301067.7 O14686-1

Frequencies

GnomAD3 genomes
AF:
0.0000788
AC:
12
AN:
152194
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.0000483
Gnomad AMI
AF:
0.0110
Gnomad AMR
AF:
0.00
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.00
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.00000962
AC:
2
AN:
207828
AF XY:
0.00000897
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000104
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000113
AC:
16
AN:
1411330
Hom.:
0
Cov.:
35
AF XY:
0.0000100
AC XY:
7
AN XY:
696580
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
31930
American (AMR)
AF:
0.0000259
AC:
1
AN:
38554
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
22488
East Asian (EAS)
AF:
0.0000255
AC:
1
AN:
39220
South Asian (SAS)
AF:
0.0000384
AC:
3
AN:
78152
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
51458
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5516
European-Non Finnish (NFE)
AF:
0.0000101
AC:
11
AN:
1085914
Other (OTH)
AF:
0.00
AC:
0
AN:
58098
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.528
Heterozygous variant carriers
0
2
4
5
7
9
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome 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
GnomAD4 genome
AF:
0.0000788
AC:
12
AN:
152194
Hom.:
0
Cov.:
32
AF XY:
0.0000807
AC XY:
6
AN XY:
74344
show subpopulations
African (AFR)
AF:
0.0000483
AC:
2
AN:
41448
American (AMR)
AF:
0.00
AC:
0
AN:
15284
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3472
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5188
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4828
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10624
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
316
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
68032
Other (OTH)
AF:
0.00
AC:
0
AN:
2090
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.479
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:
0.00
Hom.:
0
Bravo
AF:
0.0000982
ExAC
AF:
0.00000828
AC:
1

ClinVar

Significance: Conflicting classifications of pathogenicity
Submissions summary: Uncertain:1Benign:1
Revision: criteria provided, conflicting classifications
LINK: link

Submissions by phenotype

Kabuki syndrome 1 Uncertain:1
Nov 01, 2016
Center for Human Genetics, Inc, Center for Human Genetics, Inc
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Kabuki syndrome Benign:1
Aug 27, 2022
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Likely benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
0.62
BayesDel_addAF
Uncertain
0.13
D
BayesDel_noAF
Uncertain
-0.050
CADD
Uncertain
25
DANN
Uncertain
0.98
DEOGEN2
Benign
0.23
T
Eigen
Pathogenic
0.69
Eigen_PC
Pathogenic
0.69
FATHMM_MKL
Uncertain
0.94
D
LIST_S2
Uncertain
0.94
D
M_CAP
Pathogenic
0.71
D
MetaRNN
Benign
0.17
T
MetaSVM
Uncertain
0.37
D
MutationAssessor
Benign
1.1
L
PhyloP100
4.4
PrimateAI
Pathogenic
0.81
D
PROVEAN
Uncertain
-4.4
D
REVEL
Uncertain
0.54
Sift
Pathogenic
0.0
D
Polyphen
1.0
D
Vest4
0.57
MutPred
0.21
Gain of glycosylation at S2459 (P = 0.0696);
MVP
0.54
MPC
0.76
ClinPred
0.93
D
GERP RS
5.2
RBP_binding_hub_radar
0.92
RBP_regulation_power_radar
3.4
Varity_R
0.33
gMVP
0.14
Mutation Taster
=76/24
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: rs754060706; hg19: chr12-49434187; COSMIC: COSV56430524; COSMIC: COSV56430524; API