rs587778472

chr12-49038661-C-Achr12-49038661-C-Gchr12-49038661-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2 PP2 PP3

The NM_003482.4(KMT2D):c.8695G>T(p.Gly2899Cys) 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. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G2899R) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: KMT2D NM_003482.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.83

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 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant where missense usually causes diseases, KMT2D
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.775

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
KMT2D	NM_003482.4	c.8695G>T	p.Gly2899Cys	missense_variant	35/55	ENST00000301067.12

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
KMT2D	ENST00000301067.12	c.8695G>T	p.Gly2899Cys	missense_variant	35/55	5	NM_003482.4	A2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.15
BayesDel_addAF	Uncertain	0.082	D
BayesDel_noAF	Benign	-0.12
Cadd	Benign	23
Dann	Benign	0.95
DEOGEN2	Benign	0.22	T
Eigen	Uncertain	0.39
Eigen_PC	Uncertain	0.36
FATHMM_MKL	Uncertain	0.82	D
LIST_S2	Benign	0.75	T
M_CAP	Pathogenic	0.70	D
MetaRNN	Pathogenic	0.77	D
MetaSVM	Uncertain	0.21	D
MutationAssessor	Benign	0.90	L
MutationTaster	Benign	0.67	D
PrimateAI	Uncertain	0.68	T
PROVEAN	Uncertain	-3.1	D
REVEL	Uncertain	0.32
Sift	Uncertain	0.0050	D
Polyphen		1.0	D
Vest4		0.64
MutPred		0.24		Loss of relative solvent accessibility (P = 0.008);
MVP		0.53
MPC		0.66
ClinPred		0.91	D
GERP RS		5.3
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.2
Varity_R		0.28
gMVP		0.50

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: chr12-49432444;