dbSNP rs200106242: KMT2D:p.Pro647Ser (chr12-49051744-G-A) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 4P and 2B. PM2PM5BP4_Moderate

The NM_003482.4(KMT2D):c.1939C>T(p.Pro647Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000663 in 150,848 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 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. P647Q) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 28)

Consequence

KMT2D
NM_003482.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.801

Variant links:

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]

KMT2D links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PM5

Other missense variant is known to change same aminoacid residue: Variant chr12-49051743-G-T is described in Lovd as [Pathogenic].

BP4

Computational evidence support a benign effect (MetaRNN=0.11534637).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KMT2D	NM_003482.4 link	c.1939C>T	p.Pro647Ser	missense_variant	Exon 11 of 55	ENST00000301067.12	NP_003473.3	O14686-1Q59FG6Q6PIA1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
KMT2D	ENST00000301067.12 link	c.1939C>T	p.Pro647Ser	missense_variant	Exon 11 of 55	5	NM_003482.4	ENSP00000301067.7	O14686-1
KMT2D	ENST00000683543.2 link	c.1939C>T	p.Pro647Ser	missense_variant	Exon 11 of 56			ENSP00000506726.1	A0A804HHR9
KMT2D	ENST00000685166.1 link	c.1939C>T	p.Pro647Ser	missense_variant	Exon 10 of 54			ENSP00000509386.1	O14686-3
KMT2D	ENST00000692637.1 link	c.1939C>T	p.Pro647Ser	missense_variant	Exon 10 of 54			ENSP00000509666.1	A0A8I5KSG1

Frequencies

GnomAD3 genomes

AF:

0.00000663

AC:

AN:

150848

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000245

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

Cov.:

GnomAD4 genome

AF:

0.00000663

AC:

AN:

150848

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

73606

show subpopulations

Gnomad4 AFR

AF:

0.0000245

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.17

BayesDel_addAF

Benign

-0.0093

BayesDel_noAF

Benign

-0.25

CADD

Benign

DANN

Benign

0.69

DEOGEN2

Benign

0.050

Eigen

Benign

-0.98

Eigen_PC

Benign

-0.99

FATHMM_MKL

Benign

0.28

LIST_S2

Benign

0.73

M_CAP

Pathogenic

0.32

MetaRNN

Benign

0.12

MetaSVM

Benign

-0.89

MutationAssessor

Benign

0.55

PrimateAI

Uncertain

0.54

PROVEAN

Benign

-1.0

REVEL

Benign

0.21

Sift

Uncertain

0.0060

Polyphen

0.011

Vest4

0.28

MutPred

0.31

Gain of phosphorylation at P647 (P = 3e-04);

MVP

0.53

MPC

0.19

ClinPred

0.052

GERP RS

0.61

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

2.2

Varity_R

0.041

gMVP

0.32

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

LitVar

Other links and lift over