rs868985556

Positions:

• chr11-118478083-C-G
• chr11-118478083-C-T

Variant summary

Our verdict is Likely pathogenic. Variant got 7 ACMG points: 7P and 0B. PM1 PM2 PP2 PP3_Moderate

The NM_001197104.2(KMT2A):​c.3451C>G​(p.Arg1151Gly) 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 pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 31)
• Consequence: KMT2A NM_001197104.2 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.45

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]

ACMG classification

Verdict is Likely_pathogenic. Variant got 7 ACMG points.

• PM1: In a mutagenesis_site Impairs DNA-binding. (size 0) in uniprot entity KMT2A_HUMAN
• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in gene, where missense usually causes diseases (based on misZ statistic), KMT2A. . Gene score misZ 6.2276 (greater than the threshold 3.09). Trascript score misZ 8.7715 (greater than threshold 3.09). GenCC has associacion of gene with Wiedemann-Steiner syndrome.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.848

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
KMT2A	NM_001197104.2	c.3451C>G	p.Arg1151Gly	missense_variant	5/36	ENST00000534358.8	NP_001184033.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
KMT2A	ENST00000534358.8	c.3451C>G	p.Arg1151Gly	missense_variant	5/36	1	NM_001197104.2	ENSP00000436786	P4

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 31

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.40	D
BayesDel_noAF	Pathogenic	0.34
CADD	Uncertain	25
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.68	.;.;D;.;.;.
Eigen	Pathogenic	0.70
Eigen_PC	Uncertain	0.64
FATHMM_MKL	Pathogenic	0.97	D
LIST_S2	Pathogenic	0.98	D;D;D;D;D;D
M_CAP	Pathogenic	0.37	D
MetaRNN	Pathogenic	0.85	D;D;D;D;D;D
MetaSVM	Uncertain	0.73	D
MutationAssessor	Uncertain	2.6	.;M;M;.;M;.
MutationTaster	Benign	1.0	D;D;D
PrimateAI	Pathogenic	0.87	D
PROVEAN	Uncertain	-3.8	.;D;D;D;.;.
REVEL	Pathogenic	0.77
Sift	Pathogenic	0.0	.;D;D;D;.;.
Sift4G	Uncertain	0.010	.;D;D;T;.;.
Polyphen		1.0	.;.;D;.;.;.
Vest4		0.77, 0.69
MutPred		0.49		.;Loss of MoRF binding (P = 0.0345);Loss of MoRF binding (P = 0.0345);.;Loss of MoRF binding (P = 0.0345);.;
MVP		0.94
MPC		2.1
ClinPred		0.99	D
GERP RS		5.1
Varity_R		0.78
gMVP		0.89

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr11-118348798;