12-49042791-G-T

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 3P and 1B. PM2 PP2 BP4

The NM_003482.4(KMT2D):c.5732C>A(p.Thr1911Asn) variant causes a missense change. The variant allele was found at a frequency of 0.00000205 in 1,461,636 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as not provided (no stars). Synonymous variant affecting the same amino acid position (i.e. T1911T) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: KMT2D NM_003482.4 missense
• Clinical Significance: not provided no classification provided O:1
• Conservation: PhyloP100: 3.76

Genes affected

KMT2D (HGNC:7133): (lysine methyltransferase 2D) The protein encoded by this gene is a histone methyltransferase that methylates the Lys-4 position of histone H3. The encoded protein is part of a large protein complex called ASCOM, which has been shown to be a transcriptional regulator of the beta-globin and estrogen receptor genes. Mutations in this gene have been shown to be a cause of Kabuki syndrome. [provided by RefSeq, Oct 2010]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant where missense usually causes diseases, KMT2D
• BP4: Computational evidence support a benign effect (MetaRNN=0.41927376).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
KMT2D	NM_003482.4	c.5732C>A	p.Thr1911Asn	missense_variant	27/55	ENST00000301067.12

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
KMT2D	ENST00000301067.12	c.5732C>A	p.Thr1911Asn	missense_variant	27/55	5	NM_003482.4	A2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.00000401 AC: 1 AN: 249238 Hom.: 0 AF XY: 0.00000740 AC XY: 1 AN XY: 135218

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000885

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000205 AC: 3 AN: 1461636 Hom.: 0 Cov.: 33 AF XY: 0.00000275 AC XY: 2 AN XY: 727114

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: 0.00000270

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ExAC AF: 0.00000826 AC: 1

EpiCase AF: 0.00

EpiControl AF: 0.0000593

ClinVar

Significance: not provided

Submissions summary: Other:1

Revision: no classification provided

Submissions by phenotype

not specified Other:1

not provided, no classification provided

reference population

ITMI

Sep 19, 2013

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.11
BayesDel_addAF	Benign	-0.026	T
BayesDel_noAF	Benign	-0.28
Cadd	Benign	21
Dann	Benign	0.85
DEOGEN2	Benign	0.037	T
Eigen	Benign	0.14
Eigen_PC	Uncertain	0.29
FATHMM_MKL	Uncertain	0.93	D
LIST_S2	Benign	0.75	T
M_CAP	Uncertain	0.11	D
MetaRNN	Benign	0.42	T
MetaSVM	Benign	-0.85	T
MutationAssessor	Benign	1.4	L
MutationTaster	Benign	0.99	N
PrimateAI	Uncertain	0.53	T
PROVEAN	Benign	-0.38	N
REVEL	Uncertain	0.35
Sift	Benign	0.15	T
Polyphen		0.83	P
Vest4		0.64
MutPred		0.16		Loss of phosphorylation at T1911 (P = 0.0398);
MVP		0.35
MPC		1.5
ClinPred		0.42	T
GERP RS		4.6
Varity_R		0.045
gMVP		0.11

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

Other links and lift over

dbSNP: rs587778460; hg19: chr12-49436574;