3-69739635-T-C

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 0P and 5B. BP4_StrongBS1_Supporting

The NM_001354604.2(MITF):c.38T>C(p.Val13Ala) variant causes a missense change. The variant allele was found at a frequency of 0.0000152 in 1,583,580 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000014 ( 0 hom. )

Consequence

MITF
NM_001354604.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.89

Publications

1 publications found

Variant links:

Genes affected

MITF (HGNC:7105): (melanocyte inducing transcription factor) The protein encoded by this gene is a transcription factor that contains both basic helix-loop-helix and leucine zipper structural features. The encoded protein regulates melanocyte development and is responsible for pigment cell-specific transcription of the melanogenesis enzyme genes. Heterozygous mutations in the this gene cause auditory-pigmentary syndromes, such as Waardenburg syndrome type 2 and Tietz syndrome. [provided by RefSeq, Aug 2017]

MITF Gene-Disease associations (from GenCC):

Tietz syndrome
Inheritance: AD Classification: DEFINITIVE, MODERATE, SUPPORTIVE Submitted by: G2P, Ambry Genetics, Orphanet
Waardenburg syndrome type 2
Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: ClinGen, Orphanet
Waardenburg syndrome type 2A
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: G2P, Ambry Genetics, Labcorp Genetics (formerly Invitae)
melanoma, cutaneous malignant, susceptibility to, 8
Inheritance: AD Classification: STRONG, MODERATE, LIMITED Submitted by: Ambry Genetics, G2P, Labcorp Genetics (formerly Invitae)
coloboma, osteopetrosis, microphthalmia, macrocephaly, albinism, and deafness
Inheritance: AR Classification: STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae)
renal cell carcinoma
Inheritance: AD Classification: MODERATE Submitted by: Genomics England PanelApp
Waardenburg syndrome
Inheritance: AR Classification: MODERATE Submitted by: Ambry Genetics
Waardenburg-Shah syndrome
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

MITF links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -5 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.024799585).

BS1

Variant frequency is greater than expected in population eas. GnomAd4 allele frequency = 0.0000263 (4/152094) while in subpopulation EAS AF = 0.000775 (4/5160). AF 95% confidence interval is 0.000265. There are 0 homozygotes in GnomAd4. There are 3 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001354604.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
MITF	NM_001354604.2	MANE Select	c.38T>C	p.Val13Ala	missense	Exon 1 of 10	NP_001341533.1	O75030-1
MITF	NM_001354605.2		c.38T>C	p.Val13Ala	missense	Exon 1 of 10	NP_001341534.1
MITF	NM_198159.3		c.38T>C	p.Val13Ala	missense	Exon 1 of 10	NP_937802.1	O75030-2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
MITF	ENST00000352241.9	TSL:1 MANE Select	c.38T>C	p.Val13Ala	missense	Exon 1 of 10	ENSP00000295600.8	O75030-1
MITF	ENST00000956046.1		c.38T>C	p.Val13Ala	missense	Exon 1 of 11	ENSP00000626105.1
MITF	ENST00000956043.1		c.38T>C	p.Val13Ala	missense	Exon 1 of 11	ENSP00000626102.1

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

152094

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:

0.000775

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

GnomAD2 exomes

AF:

0.000119

AC:

AN:

201592

AF XY:

0.000111

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00155

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000140

AC:

AN:

1431486

Hom.:

Cov.:

AF XY:

0.0000169

AC XY:

AN XY:

708378

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33154

American (AMR)

AF:

0.00

AC:

AN:

40530

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25576

East Asian (EAS)

AF:

0.000489

AC:

AN:

38862

South Asian (SAS)

AF:

0.00

AC:

AN:

81792

European-Finnish (FIN)

AF:

0.00

AC:

AN:

51158

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5738

European-Non Finnish (NFE)

AF:

9.13e-7

AC:

AN:

1095324

Other (OTH)

AF:

0.00

AC:

AN:

59352

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.498

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:

0.0000263

AC:

AN:

152094

Hom.:

Cov.:

AF XY:

0.0000404

AC XY:

AN XY:

74296

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41432

American (AMR)

AF:

0.00

AC:

AN:

15276

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.000775

AC:

AN:

5160

South Asian (SAS)

AF:

0.00

AC:

AN:

4820

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10612

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68002

Other (OTH)

AF:

0.00

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.488

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:

0.0000529

ExAC

AF:

0.0000584

AC:

ClinVar

ClinVar submissions

Significance:Uncertain significance

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

Tietz syndrome;C1860339:Waardenburg syndrome type 2A;C3152204:Melanoma, cutaneous malignant, susceptibility to, 8;C4310625:Coloboma, osteopetrosis, microphthalmia, macrocephaly, albinism, and deafness (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.36

BayesDel_addAF

Benign

-0.27

BayesDel_noAF

Benign

-0.19

CADD

Uncertain

(source)

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.54

Eigen

Benign

0.038

Eigen_PC

Benign

0.13

FATHMM_MKL

Benign

0.72

LIST_S2

Benign

0.74

M_CAP

Benign

0.039

MetaRNN

Benign

0.025

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.9

PhyloP100

4.9

PrimateAI

Uncertain

0.76

PROVEAN

Benign

-0.88

REVEL

Benign

0.15

Sift

Uncertain

0.0050

Sift4G

Uncertain

0.0080

Polyphen

0.53

Vest4

0.43

MutPred

0.32

Loss of sheet (P = 0.0817)

MVP

0.49

MPC

0.38

ClinPred

0.085

GERP RS

5.3

PromoterAI

-0.011

Neutral

(source)

Varity_R

0.27

gMVP

0.88

Mutation Taster

=65/35

polymorphism

(source)

Splicing

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