rs147212187

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.1938C>G​(p.Pro646Pro) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000985 in 136,058 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.00098 ( 3 hom., cov: 28)
Exomes 𝑓: 0.0010 ( 30 hom. )
Failed GnomAD Quality Control

Consequence

KMT2D
NM_003482.4 synonymous

Scores

2

Clinical Significance

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

Conservation

PhyloP100: -2.00

Publications

4 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=-0.88).
BP6
Variant 12-49051745-G-C is Benign according to our data. Variant chr12-49051745-G-C is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 158747.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
BP7
Synonymous conserved (PhyloP=-2 with no splicing effect.
BS1
Variant frequency is greater than expected in population eas. GnomAd4 allele frequency = 0.000985 (134/136058) while in subpopulation EAS AF = 0.0247 (110/4446). AF 95% confidence interval is 0.021. There are 3 homozygotes in GnomAd4. There are 63 alleles in the male GnomAd4 subpopulation. Median coverage is 28. This position passed quality control check.
BS2
High AC in GnomAd4 at 134 AD gene.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
KMT2DNM_003482.4 linkc.1938C>G p.Pro646Pro synonymous_variant Exon 11 of 55 ENST00000301067.12 NP_003473.3

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
KMT2DENST00000301067.12 linkc.1938C>G p.Pro646Pro synonymous_variant Exon 11 of 55 5 NM_003482.4 ENSP00000301067.7
KMT2DENST00000683543.2 linkc.1938C>G p.Pro646Pro synonymous_variant Exon 11 of 56 ENSP00000506726.1
KMT2DENST00000685166.1 linkc.1938C>G p.Pro646Pro synonymous_variant Exon 10 of 54 ENSP00000509386.1
KMT2DENST00000692637.1 linkc.1938C>G p.Pro646Pro synonymous_variant Exon 10 of 54 ENSP00000509666.1

Frequencies

GnomAD3 genomes
AF:
0.000993
AC:
135
AN:
135952
Hom.:
3
Cov.:
28
show subpopulations
Gnomad AFR
AF:
0.000334
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.0249
Gnomad SAS
AF:
0.00144
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000793
Gnomad OTH
AF:
0.000537
GnomAD2 exomes
AF:
0.00186
AC:
457
AN:
246138
AF XY:
0.00168
show subpopulations
Gnomad AFR exome
AF:
0.000260
Gnomad AMR exome
AF:
0.000117
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.0236
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000808
Gnomad OTH exome
AF:
0.000838
GnomAD4 exome
Data not reliable, filtered out with message: AS_VQSR
AF:
0.000998
AC:
1410
AN:
1413366
Hom.:
30
Cov.:
35
AF XY:
0.000938
AC XY:
660
AN XY:
703816
show subpopulations
African (AFR)
AF:
0.000123
AC:
4
AN:
32468
American (AMR)
AF:
0.0000904
AC:
4
AN:
44252
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
25372
East Asian (EAS)
AF:
0.0318
AC:
1234
AN:
38808
South Asian (SAS)
AF:
0.000258
AC:
22
AN:
85302
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
52726
Middle Eastern (MID)
AF:
0.000177
AC:
1
AN:
5646
European-Non Finnish (NFE)
AF:
0.0000392
AC:
42
AN:
1070514
Other (OTH)
AF:
0.00177
AC:
103
AN:
58278
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.644
Heterozygous variant carriers
0
76
152
227
303
379
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Exome Hom
Variant carriers
0
20
40
60
80
100
<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:
0.000985
AC:
134
AN:
136058
Hom.:
3
Cov.:
28
AF XY:
0.000952
AC XY:
63
AN XY:
66168
show subpopulations
African (AFR)
AF:
0.000333
AC:
12
AN:
36060
American (AMR)
AF:
0.00
AC:
0
AN:
13404
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3292
East Asian (EAS)
AF:
0.0247
AC:
110
AN:
4446
South Asian (SAS)
AF:
0.00145
AC:
6
AN:
4150
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
8788
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
204
European-Non Finnish (NFE)
AF:
0.0000793
AC:
5
AN:
63018
Other (OTH)
AF:
0.000532
AC:
1
AN:
1880
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.590
Heterozygous variant carriers
0
6
12
17
23
29
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Genome Hom
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:
0.000222
Hom.:
0
Bravo
AF:
0.000926
EpiCase
AF:
0.0000547
EpiControl
AF:
0.00

ClinVar

Significance: Benign/Likely benign
Submissions summary: Benign:5
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not specified Benign:2
Jun 26, 2015
Eurofins Ntd Llc (ga)
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Mar 11, 2013
Genetic Services Laboratory, University of Chicago
Significance:Likely benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Kabuki syndrome Benign:1
Jan 29, 2025
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Kabuki syndrome 1 Benign:1
Aug 13, 2021
Fulgent Genetics, Fulgent Genetics
Significance:Likely benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

not provided Benign:1
Nov 14, 2018
GeneDx
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
-0.88
CADD
Benign
1.1
DANN
Benign
0.34
PhyloP100
-2.0
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.5
Mutation Taster
=100/0
polymorphism

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.020
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: rs147212187; hg19: chr12-49445528; API