rs55776396

Variant summary

Our verdict is Benign. The variant received -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BS1BS2

The NM_003482.4(KMT2D):​c.15978T>G​(p.Leu5326Leu) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0286 in 1,613,796 control chromosomes in the GnomAD database, including 800 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.025 ( 78 hom., cov: 32)
Exomes 𝑓: 0.029 ( 722 hom. )

Consequence

KMT2D
NM_003482.4 synonymous

Scores

2

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:8

Conservation

PhyloP100: -1.10

Publications

10 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 -21 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.57).
BP6
Variant 12-49024652-A-C is Benign according to our data. Variant chr12-49024652-A-C is described in ClinVar as Benign. ClinVar VariationId is 94189.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
BP7
Synonymous conserved (PhyloP=-1.1 with no splicing effect.
BS1
Variant frequency is greater than expected in population nfe. GnomAd4 allele frequency = 0.0251 (3822/152224) while in subpopulation NFE AF = 0.036 (2451/68016). AF 95% confidence interval is 0.0348. There are 78 homozygotes in GnomAd4. There are 1874 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.
BS2
High AC in GnomAd4 at 3822 AD gene.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
KMT2DNM_003482.4 linkc.15978T>G p.Leu5326Leu synonymous_variant Exon 51 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.15978T>G p.Leu5326Leu synonymous_variant Exon 51 of 55 5 NM_003482.4 ENSP00000301067.7 O14686-1

Frequencies

GnomAD3 genomes
AF:
0.0251
AC:
3824
AN:
152106
Hom.:
78
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.00471
Gnomad AMI
AF:
0.0241
Gnomad AMR
AF:
0.0214
Gnomad ASJ
AF:
0.0239
Gnomad EAS
AF:
0.000385
Gnomad SAS
AF:
0.0228
Gnomad FIN
AF:
0.0545
Gnomad MID
AF:
0.0285
Gnomad NFE
AF:
0.0360
Gnomad OTH
AF:
0.0234
GnomAD2 exomes
AF:
0.0269
AC:
6691
AN:
249048
AF XY:
0.0273
show subpopulations
Gnomad AFR exome
AF:
0.00407
Gnomad AMR exome
AF:
0.0172
Gnomad ASJ exome
AF:
0.0212
Gnomad EAS exome
AF:
0.000167
Gnomad FIN exome
AF:
0.0482
Gnomad NFE exome
AF:
0.0336
Gnomad OTH exome
AF:
0.0304
GnomAD4 exome
AF:
0.0290
AC:
42322
AN:
1461572
Hom.:
722
Cov.:
31
AF XY:
0.0289
AC XY:
21009
AN XY:
727064
show subpopulations
African (AFR)
AF:
0.00400
AC:
134
AN:
33478
American (AMR)
AF:
0.0175
AC:
780
AN:
44696
Ashkenazi Jewish (ASJ)
AF:
0.0223
AC:
582
AN:
26132
East Asian (EAS)
AF:
0.000151
AC:
6
AN:
39698
South Asian (SAS)
AF:
0.0262
AC:
2262
AN:
86236
European-Finnish (FIN)
AF:
0.0466
AC:
2489
AN:
53392
Middle Eastern (MID)
AF:
0.0271
AC:
156
AN:
5766
European-Non Finnish (NFE)
AF:
0.0308
AC:
34254
AN:
1111804
Other (OTH)
AF:
0.0275
AC:
1659
AN:
60370
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.484
Heterozygous variant carriers
0
2256
4511
6767
9022
11278
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Exome Hom
Variant carriers
0
1196
2392
3588
4784
5980
<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:
0.0251
AC:
3822
AN:
152224
Hom.:
78
Cov.:
32
AF XY:
0.0252
AC XY:
1874
AN XY:
74442
show subpopulations
African (AFR)
AF:
0.00470
AC:
195
AN:
41530
American (AMR)
AF:
0.0213
AC:
326
AN:
15288
Ashkenazi Jewish (ASJ)
AF:
0.0239
AC:
83
AN:
3468
East Asian (EAS)
AF:
0.000386
AC:
2
AN:
5178
South Asian (SAS)
AF:
0.0228
AC:
110
AN:
4822
European-Finnish (FIN)
AF:
0.0545
AC:
578
AN:
10602
Middle Eastern (MID)
AF:
0.0204
AC:
6
AN:
294
European-Non Finnish (NFE)
AF:
0.0360
AC:
2451
AN:
68016
Other (OTH)
AF:
0.0232
AC:
49
AN:
2114
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.504
Heterozygous variant carriers
0
187
374
560
747
934
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Genome Hom
Variant carriers
0
48
96
144
192
240
<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:
0.0316
Hom.:
53
Bravo
AF:
0.0205
Asia WGS
AF:
0.0120
AC:
42
AN:
3478
EpiCase
AF:
0.0332
EpiControl
AF:
0.0334

ClinVar

Significance: Benign
Submissions summary: Benign:8
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not specified Benign:5
-
PreventionGenetics, part of Exact Sciences
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Feb 08, 2013
Genetic Services Laboratory, University of Chicago
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Nov 20, 2017
GeneDx
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

Jul 06, 2012
Eurofins Ntd Llc (ga)
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

-
Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+
Significance:Benign
Review Status:no assertion criteria provided
Collection Method:clinical testing

- -

not provided Benign:2
-
Laboratory of Diagnostic Genome Analysis, Leiden University Medical Center (LUMC)
Significance:Likely benign
Review Status:no assertion criteria provided
Collection Method:clinical testing

- -

-
Breakthrough Genomics, Breakthrough Genomics
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:not provided

- -

Kabuki syndrome Benign:1
Feb 03, 2025
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.57
CADD
Benign
6.2
DANN
Benign
0.73
PhyloP100
-1.1
PromoterAI
0.017
Neutral
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.7
Mutation Taster
=100/0
polymorphism (auto)

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: rs55776396; hg19: chr12-49418435; COSMIC: COSV56410067; API