chr11-118436670-C-G

Variant names:

• chr11-118436670-C-G
• rs9332747
• NM_001197104.2:c.158C>G

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.158C>G​(p.Ala53Gly) 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. 14/22 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. A53V) 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: -0.0170
• 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

ENSG00000285827 (HGNC:):

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=0.15041724).

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.158C>G	p.Ala53Gly	missense	Exon 1 of 36	NP_001184033.1
	KMT2A	NM_001412597.1		c.158C>G	p.Ala53Gly	missense	Exon 1 of 37	NP_001399526.1
	KMT2A	NM_005933.4		c.158C>G	p.Ala53Gly	missense	Exon 1 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.158C>G	p.Ala53Gly	missense	Exon 1 of 36	ENSP00000436786.2
	KMT2A	ENST00000389506.10	TSL:1	c.158C>G	p.Ala53Gly	missense	Exon 1 of 36	ENSP00000374157.5
	ENSG00000285827	ENST00000648261.1		c.-798-32105C>G		intron	N/A	ENSP00000498126.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 29

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.094
BayesDel_addAF	Benign	-0.14	T
BayesDel_noAF	Benign	-0.44
CADD	Benign	20
DANN	Benign	0.91
DEOGEN2	Benign	0.091	T
Eigen	Benign	-0.53
Eigen_PC	Benign	-0.40
FATHMM_MKL	Benign	0.17	N
LIST_S2	Benign	0.52	T
M_CAP	Pathogenic	0.83	D
MetaRNN	Benign	0.15	T
MetaSVM	Benign	-0.76	T
MutationAssessor	Benign	0.34	N
PhyloP100		-0.017
PrimateAI	Pathogenic	0.87	D
PROVEAN	Benign	-0.25	N
REVEL	Benign	0.19
Sift	Pathogenic	0.0	D
Sift4G	Benign	0.16	T
Polyphen		0.0010	B
Vest4		0.057
MutPred		0.14		Gain of catalytic residue at A53 (P = 0.0569)
MVP		0.38
MPC		0.80
ClinPred		0.12	T
GERP RS		1.3
PromoterAI		0.048	Neutral
Varity_R		0.18
gMVP		0.23
Mutation Taster		=85/15	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: rs9332747; hg19: chr11-118307385;