chr11-118436526-G-C

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 1P and 4B. PP2BS2

The NM_001197104.2(KMT2A):c.14G>C(p.Cys5Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000634 in 1,262,236 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000063 ( 0 hom. )

Consequence

KMT2A
NM_001197104.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 1.81

Variant links:

Genes affected

KMT2A (HGNC:7132): (lysine methyltransferase 2A) This gene encodes a transcriptional coactivator that plays an essential role in regulating gene expression during early development and hematopoiesis. The encoded protein contains multiple conserved functional domains. One of these domains, the SET domain, is responsible for its histone H3 lysine 4 (H3K4) methyltransferase activity which mediates chromatin modifications associated with epigenetic transcriptional activation. This protein is processed by the enzyme Taspase 1 into two fragments, MLL-C and MLL-N. These fragments reassociate and further assemble into different multiprotein complexes that regulate the transcription of specific target genes, including many of the HOX genes. Multiple chromosomal translocations involving this gene are the cause of certain acute lymphoid leukemias and acute myeloid leukemias. Alternate splicing results in multiple transcript variants.[provided by RefSeq, Oct 2010]

KMT2A links:

ENSG00000285827 (HGNC:):

ENSG00000285827 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -3 ACMG points.

PP2

Missense variant in the KMT2A gene, where missense mutations are typically associated with disease (based on misZ statistic). The gene has 45 curated pathogenic missense variants (we use a threshold of 10). The gene has 124 curated benign missense variants. Gene score misZ: 6.2276 (above the threshold of 3.09). Trascript score misZ: 8.7715 (above the threshold of 3.09). GenCC associations: The gene is linked to Wiedemann-Steiner syndrome.

BS2

High AC in GnomAdExome4 at 7 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KMT2A	NM_001197104.2 link	c.14G>C	p.Cys5Ser	missense_variant	Exon 1 of 36	ENST00000534358.8	NP_001184033.1	Q03164-3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KMT2A	ENST00000534358.8 link	c.14G>C	p.Cys5Ser	missense_variant	Exon 1 of 36	1	NM_001197104.2	ENSP00000436786.2		Q03164-3
ENSG00000285827	ENST00000648261.1 link	c.-798-32249G>C		intron_variant	Intron 1 of 6			ENSP00000498126.1		A0A3B3ITZ1

Frequencies

GnomAD3 genomes

AF:

0.00000660

AC:

AN:

151594

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000630

AC:

AN:

1110642

Hom.:

Cov.:

AF XY:

0.00000567

AC XY:

AN XY:

529374

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000648

Gnomad4 OTH exome

AF:

0.0000231

GnomAD4 genome

AF:

0.00000660

AC:

AN:

151594

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74052

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Uncertain:2

May 06, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces cysteine, which is neutral and slightly polar, with serine, which is neutral and polar, at codon 5 of the KMT2A protein (p.Cys5Ser). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Tolerated"; PolyPhen-2: "Not Available"; Align-GVGD: "Class C0"). ClinVar contains an entry for this variant (Variation ID: 1312973). This variant has not been reported in the literature in individuals affected with KMT2A-related conditions. This variant is not present in population databases (gnomAD no frequency). -

Jul 07, 2020

GeneDx

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Not observed in large population cohorts (Lek et al., 2016); In silico analysis supports that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.16

BayesDel_addAF

Pathogenic

0.32

BayesDel_noAF

Pathogenic

0.22

CADD

Uncertain

DANN

Benign

0.93

DEOGEN2

Benign

0.24

.;T;.;.

Eigen

Uncertain

0.22

Eigen_PC

Uncertain

0.22

FATHMM_MKL

Benign

0.70

LIST_S2

Benign

0.68

T;T;T;T

M_CAP

Pathogenic

0.97

MetaRNN

Uncertain

0.43

T;T;T;T

MetaSVM

Uncertain

0.057

MutationAssessor

Benign

0.90

L;L;.;L

PrimateAI

Pathogenic

0.93

PROVEAN

Benign

-1.9

N;N;N;.

REVEL

Uncertain

0.48

Sift

Pathogenic

0.0

D;D;D;.

Sift4G

Benign

0.17

T;T;T;.

Polyphen

0.82

.;P;P;.

Vest4

0.21

MutPred

0.30

Gain of phosphorylation at C5 (P = 0.0131);Gain of phosphorylation at C5 (P = 0.0131);Gain of phosphorylation at C5 (P = 0.0131);Gain of phosphorylation at C5 (P = 0.0131);

MVP

0.89

MPC

0.98

ClinPred

0.81

GERP RS

3.6

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.9

Varity_R

0.92

gMVP

0.51

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over