dbSNP rs1057519283: KMT2B:p.Arg564Gly (chr19-35721037-C-G) – 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_014727.3(KMT2B):c.1690C>G(p.Arg564Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000662 in 150,970 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 17/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R564Q) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 27)

Consequence

KMT2B
NM_014727.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.0960

Publications

2 publications found

Variant links:

Genes affected

KMT2B (HGNC:15840): (lysine methyltransferase 2B) This gene encodes a protein which contains multiple domains including a CXXC zinc finger, three PHD zinc fingers, two FY-rich domains, and a SET (suppressor of variegation, enhancer of zeste, and trithorax) domain. The SET domain is a conserved C-terminal domain that characterizes proteins of the MLL (mixed-lineage leukemia) family. This gene is ubiquitously expressed in adult tissues. It is also amplified in solid tumor cell lines, and may be involved in human cancer. Two alternatively spliced transcript variants encoding distinct isoforms have been reported for this gene, however, the full length nature of the shorter transcript is not known. [provided by RefSeq, Jul 2008]

KMT2B Gene-Disease associations (from GenCC):

complex neurodevelopmental disorder with motor features
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
dystonia 28, childhood-onset
Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Ambry Genetics, Orphanet, Genomics England PanelApp, Labcorp Genetics (formerly Invitae)
intellectual developmental disorder, autosomal dominant 68
Inheritance: Unknown Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae)

KMT2B links:

Genome browser will be placed here

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=0.10745278).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KMT2B	NM_014727.3 link	c.1690C>G	p.Arg564Gly	missense_variant	Exon 3 of 37	ENST00000420124.4	NP_055542.1	Q9UMN6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KMT2B	ENST00000420124.4 link	c.1690C>G	p.Arg564Gly	missense_variant	Exon 3 of 37	1	NM_014727.3	ENSP00000398837.2		Q9UMN6

Frequencies

GnomAD3 genomes

AF:

0.00000662

AC:

AN:

150970

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000244

Gnomad AMI

AF:

0.00

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

GnomAD4 exome

Cov.:

GnomAD4 genome

AF:

0.00000662

AC:

AN:

150970

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

73560

show subpopulations

African (AFR)

AF:

0.0000244

AC:

AN:

40950

American (AMR)

AF:

0.00

AC:

AN:

15178

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3466

East Asian (EAS)

AF:

0.00

AC:

AN:

5082

South Asian (SAS)

AF:

0.00

AC:

AN:

4752

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10436

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

67800

Other (OTH)

AF:

0.00

AC:

AN:

2078

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<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.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.15

BayesDel_addAF

Benign

0.0080

BayesDel_noAF

Benign

-0.23

CADD

Benign

(source)

DANN

Benign

0.93

DEOGEN2

Benign

0.038

Eigen

Benign

-0.68

Eigen_PC

Benign

-0.61

FATHMM_MKL

Benign

0.18

LIST_S2

Benign

0.58

M_CAP

Benign

0.073

MetaRNN

Benign

0.11

MetaSVM

Benign

-0.69

MutationAssessor

Benign

0.34

PhyloP100

-0.096

PrimateAI

Benign

0.44

PROVEAN

Benign

-1.5

REVEL

Benign

0.24

Sift

Uncertain

0.0010

Sift4G

Benign

0.098

Polyphen

0.0

Vest4

0.35

MutPred

0.13

Gain of sheet (P = 0.1208);

MVP

0.35

ClinPred

0.14

GERP RS

2.4

Varity_R

0.16

gMVP

0.22

Mutation Taster

=88/12

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over