chr11-118509150-T-A

Variant names:

• chr11-118509150-T-A
• rs146191865
• NM_001197104.2:c.10850T>A

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001197104.2(KMT2A):​c.10850T>A​(p.Leu3617His) 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. 13/22 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. L3617P) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: KMT2A NM_001197104.2 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.29
• Publications: 0 publications found

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 Gene-Disease associations (from GenCC):

• Wiedemann-Steiner syndrome

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Orphanet, Illumina, Labcorp Genetics (formerly Invitae), ClinGen

ACMG classification

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=0.2177881).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001197104.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	KMT2A	NM_001197104.2	MANE Select	c.10850T>A	p.Leu3617His	missense	Exon 29 of 36	NP_001184033.1
	KMT2A	NM_001412597.1		c.10940T>A	p.Leu3647His	missense	Exon 30 of 37	NP_001399526.1
	KMT2A	NM_005933.4		c.10841T>A	p.Leu3614His	missense	Exon 29 of 36	NP_005924.2

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	KMT2A	ENST00000534358.8	TSL:1 MANE Select	c.10850T>A	p.Leu3617His	missense	Exon 29 of 36	ENSP00000436786.2
	KMT2A	ENST00000389506.10	TSL:1	c.10841T>A	p.Leu3614His	missense	Exon 29 of 36	ENSP00000374157.5
	KMT2A	ENST00000531904.7	TSL:2	c.10949T>A	p.Leu3650His	missense	Exon 30 of 37	ENSP00000432391.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.11
BayesDel_addAF	Uncertain	0.079	D
BayesDel_noAF	Benign	-0.12
CADD	Benign	21
DANN	Benign	0.90
DEOGEN2	Benign	0.15	T
Eigen	Benign	-0.11
Eigen_PC	Benign	-0.065
FATHMM_MKL	Uncertain	0.95	D
LIST_S2	Benign	0.76	T
M_CAP	Uncertain	0.14	D
MetaRNN	Benign	0.22	T
MetaSVM	Benign	-0.62	T
MutationAssessor	Benign	0.69	N
PhyloP100		2.3
PrimateAI	Benign	0.42	T
PROVEAN	Benign	-1.4	N
REVEL	Uncertain	0.35
Sift	Pathogenic	0.0	D
Sift4G	Uncertain	0.016	D
Polyphen		0.97	D
Vest4		0.64
MutPred		0.27		Loss of loop (P = 0.0203)
MVP		0.64
MPC		1.0
ClinPred		0.54	D
GERP RS		2.3
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.16
gMVP		0.45
Mutation Taster		=90/10	polymorphism

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

Other links and lift over

dbSNP: rs146191865; hg19: chr11-118379865;