Genetic Variant KMT2D:p.Ala3146Thr (chr12-49037920-C-T) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_003482.4(KMT2D):c.9436G>A(p.Ala3146Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. 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 Uncertain significance (★). Synonymous variant affecting the same amino acid position (i.e. A3146A) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

KMT2D
NM_003482.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.51

Publications

0 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

KMT2D links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.08521402).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_003482.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	KMT2D	NM_003482.4	MANE Select	c.9436G>A	p.Ala3146Thr	missense	Exon 35 of 55	NP_003473.3

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
KMT2D	ENST00000301067.12	TSL:5 MANE Select	c.9436G>A	p.Ala3146Thr	missense	Exon 35 of 55	ENSP00000301067.7
KMT2D	ENST00000683543.2		c.9436G>A	p.Ala3146Thr	missense	Exon 35 of 56	ENSP00000506726.1
KMT2D	ENST00000685166.1		c.9445G>A	p.Ala3149Thr	missense	Exon 34 of 54	ENSP00000509386.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

Data not reliable, filtered out with message: AC0

AF:

0.00

AC:

AN:

1452080

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

721540

African (AFR)

AF:

0.00

AC:

AN:

33318

American (AMR)

AF:

0.00

AC:

AN:

43364

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25906

East Asian (EAS)

AF:

0.00

AC:

AN:

39304

South Asian (SAS)

AF:

0.00

AC:

AN:

84618

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52000

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5762

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1107744

Other (OTH)

AF:

0.00

AC:

AN:

60064

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

ClinVar

ClinVar submissions as Germline

Significance:Uncertain significance

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

Kabuki syndrome (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.068

BayesDel_addAF

Benign

-0.064

BayesDel_noAF

Benign

-0.33

CADD

Benign

(source)

DANN

Benign

0.90

DEOGEN2

Benign

0.041

Eigen

Benign

-0.30

Eigen_PC

Benign

-0.14

FATHMM_MKL

Uncertain

0.95

LIST_S2

Benign

0.75

M_CAP

Uncertain

0.13

MetaRNN

Benign

0.085

MetaSVM

Benign

-0.67

MutationAssessor

Benign

0.69

PhyloP100

1.5

PrimateAI

Benign

0.33

PROVEAN

Benign

-0.52

REVEL

Benign

0.25

Sift

Uncertain

0.0030

Polyphen

0.041

Vest4

0.15

MutPred

0.17

Gain of relative solvent accessibility (P = 0.0023)

MVP

0.14

MPC

0.24

ClinPred

0.18

GERP RS

3.6

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

2.2

Varity_R

0.056

gMVP

0.099

Mutation Taster

=88/12

polymorphism

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over