chr12-49026649-C-A

Variant names:

• chr12-49026649-C-A
• NM_003482.4:c.15317G>T

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM1 PM2 PP3_Moderate

The NM_003482.4(KMT2D):​c.15317G>T​(p.Arg5106Leu) variant causes a missense change. The variant allele was found at a frequency of 0.00000137 in 1,461,676 control chromosomes in the GnomAD database, with no homozygous occurrence. 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: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: KMT2D NM_003482.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 6.17

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 Likely_pathogenic. Variant got 6 ACMG points.

• PM1: In a zinc_finger_region PHD-type 7 (size 47) in uniprot entity KMT2D_HUMAN there are 7 pathogenic changes around while only 2 benign (78%) in NM_003482.4
• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.853

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KMT2D	NM_003482.4	c.15317G>T	p.Arg5106Leu	missense_variant	Exon 49 of 55	ENST00000301067.12	NP_003473.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KMT2D	ENST00000301067.12	c.15317G>T	p.Arg5106Leu	missense_variant	Exon 49 of 55	5	NM_003482.4	ENSP00000301067.7

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461676 Hom.: 0 Cov.: 33 AF XY: 0.00000138 AC XY: 1 AN XY: 727124

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: 0.00000180

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.96
BayesDel_addAF	Pathogenic	0.23	D
BayesDel_noAF	Uncertain	0.090
CADD	Uncertain	23
DANN	Uncertain	0.98
DEOGEN2	Benign	0.27	T
Eigen	Uncertain	0.61
Eigen_PC	Uncertain	0.62
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Uncertain	0.96	D
M_CAP	Uncertain	0.18	D
MetaRNN	Pathogenic	0.85	D
MetaSVM	Uncertain	-0.12	T
MutationAssessor	Benign	1.3	L
PrimateAI	Pathogenic	0.80	T
PROVEAN	Pathogenic	-6.5	D
REVEL	Uncertain	0.54
Sift	Benign	0.052	T
Polyphen		1.0	D
Vest4		0.80
MutPred		0.52		Loss of catalytic residue at R5106 (P = 0.0482);
MVP		0.74
MPC		1.2
ClinPred		0.98	D
GERP RS		4.8
Varity_R		0.57
gMVP		0.96

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: chr12-49420432;