Genetic Variant NM_003482.4:c.8047-7delT (chr12-49039623-CA-C) – ACMG Classification: Likely_benign (-6 pts)

Variant summary

Our verdict is Likely benign. The variant received -6 ACMG points: 0P and 6B. BP6_ModerateBS2

The NM_003482.4(KMT2D):c.8047-7delT variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000369 in 1,599,036 control chromosomes in the GnomAD database, with no homozygous occurrence. 1/1 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Benign (★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000039 ( 0 hom. )

Consequence

KMT2D
NM_003482.4 splice_region, intron

Scores

Not classified

Clinical Significance

Benign criteria provided, single submitter B:1

Conservation

PhyloP100: 1.08

Publications

1 publications found

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 Gene-Disease associations (from GenCC):

choanal atresia-athelia-hypothyroidism-delayed puberty-short stature syndrome
Inheritance: AD Classification: DEFINITIVE, MODERATE Submitted by: Illumina, G2P
Kabuki syndrome 1
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P, Ambry Genetics, Laboratory for Molecular Medicine, ClinGen
branchial arch abnormalities, choanal atresia, athelia, hearing loss, and hypothyroidism syndrome
Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
Kabuki syndrome
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

KMT2D links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -6 ACMG points.

BP6

Variant 12-49039623-CA-C is Benign according to our data. Variant chr12-49039623-CA-C is described in ClinVar as Benign. ClinVar VariationId is 2086095.Status of the report is criteria_provided_single_submitter, 1 stars.

BS2

High AC in GnomAdExome4 at 57 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_003482.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	KMT2D	NM_003482.4	MANE Select	c.8047-7delT		splice_region intron	N/A	NP_003473.3	O14686-1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
KMT2D	ENST00000301067.12	TSL:5 MANE Select	c.8047-7delT	splice_region intron	N/A	ENSP00000301067.7	O14686-1
KMT2D	ENST00000683543.2		c.8047-7delT	splice_region intron	N/A	ENSP00000506726.1	A0A804HHR9
KMT2D	ENST00000685166.1		c.8056-7delT	splice_region intron	N/A	ENSP00000509386.1	O14686-3

Frequencies

GnomAD3 genomes

AF:

0.0000132

AC:

AN:

151712

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

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:

0.0000295

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000107

AC:

AN:

224184

AF XY:

0.0000898

show subpopulations

Gnomad AFR exome

AF:

0.0000709

Gnomad AMR exome

AF:

0.000129

Gnomad ASJ exome

AF:

0.000110

Gnomad EAS exome

AF:

0.0000609

Gnomad FIN exome

AF:

0.000246

Gnomad NFE exome

AF:

0.000125

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000394

AC:

AN:

1447324

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

719904

show subpopulations

African (AFR)

AF:

0.0000610

AC:

AN:

32778

American (AMR)

AF:

0.0000708

AC:

AN:

42354

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25742

East Asian (EAS)

AF:

0.00

AC:

AN:

39570

South Asian (SAS)

AF:

0.00

AC:

AN:

85274

European-Finnish (FIN)

AF:

0.000105

AC:

AN:

47622

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5706

European-Non Finnish (NFE)

AF:

0.0000406

AC:

AN:

1108356

Other (OTH)

AF:

0.0000334

AC:

AN:

59922

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.414

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0000132

AC:

AN:

151712

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74070

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41306

American (AMR)

AF:

0.00

AC:

AN:

15260

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5182

South Asian (SAS)

AF:

0.00

AC:

AN:

4818

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10482

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000295

AC:

AN:

67884

Other (OTH)

AF:

0.00

AC:

AN:

2088

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.450

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.0000227

ClinVar

ClinVar submissions

Significance:Benign

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

Kabuki syndrome (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

PhyloP100

1.1

Mutation Taster

=100/0

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over