rs766938558

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 0P and 3B. BP4_ModerateBS1_Supporting

The NM_001354604.2(MITF):​c.881-9C>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000105 in 1,611,250 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 0.000059 ( 0 hom., cov: 32)
Exomes 𝑓: 0.00011 ( 0 hom. )

Consequence

MITF
NM_001354604.2 intron

Scores

2
Splicing: ADA: 0.009588
2

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:5

Conservation

PhyloP100: 1.96

Publications

0 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, Orphanet, Ambry Genetics
  • Waardenburg syndrome type 2
    Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, ClinGen
  • Waardenburg syndrome type 2A
    Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), PanelApp Australia, G2P, Ambry Genetics
  • 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: PanelApp Australia, Labcorp Genetics (formerly Invitae), G2P
  • 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

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -3 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.21).
BS1
Variant frequency is greater than expected in population nfe. GnomAdExome4 allele frequency = 0.00011 (160/1459090) while in subpopulation NFE AF = 0.000136 (151/1109760). AF 95% confidence interval is 0.000118. There are 0 homozygotes in GnomAdExome4. There are 81 alleles in the male GnomAdExome4 subpopulation. Median coverage is 30. 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

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
MITF
NM_001354604.2
MANE Select
c.881-9C>G
intron
N/ANP_001341533.1
MITF
NM_000248.4
MANE Plus Clinical
c.560-9C>G
intron
N/ANP_000239.1
MITF
NM_001354605.2
c.878-9C>G
intron
N/ANP_001341534.1

Ensembl Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
MITF
ENST00000352241.9
TSL:1 MANE Select
c.881-9C>G
intron
N/AENSP00000295600.8
MITF
ENST00000394351.9
TSL:1 MANE Plus Clinical
c.560-9C>G
intron
N/AENSP00000377880.3
MITF
ENST00000314557.10
TSL:1
c.560-27C>G
intron
N/AENSP00000324246.6

Frequencies

GnomAD3 genomes
AF:
0.0000591
AC:
9
AN:
152160
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.0000241
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:
0.000118
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.0000599
AC:
15
AN:
250444
AF XY:
0.0000591
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.000133
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.000110
AC:
160
AN:
1459090
Hom.:
0
Cov.:
30
AF XY:
0.000112
AC XY:
81
AN XY:
726030
show subpopulations
African (AFR)
AF:
0.0000299
AC:
1
AN:
33412
American (AMR)
AF:
0.00
AC:
0
AN:
44684
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26112
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39560
South Asian (SAS)
AF:
0.00
AC:
0
AN:
86180
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53358
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5760
European-Non Finnish (NFE)
AF:
0.000136
AC:
151
AN:
1109760
Other (OTH)
AF:
0.000133
AC:
8
AN:
60264
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.455
Heterozygous variant carriers
0
6
12
18
24
30
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
10
20
30
40
50
<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:
0.0000591
AC:
9
AN:
152160
Hom.:
0
Cov.:
32
AF XY:
0.0000135
AC XY:
1
AN XY:
74328
show subpopulations
African (AFR)
AF:
0.0000241
AC:
1
AN:
41438
American (AMR)
AF:
0.00
AC:
0
AN:
15276
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3470
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5198
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4828
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10606
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
316
European-Non Finnish (NFE)
AF:
0.000118
AC:
8
AN:
68028
Other (OTH)
AF:
0.00
AC:
0
AN:
2088
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.519
Heterozygous variant carriers
0
1
1
2
2
3
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance
Alfa
AF:
0.0000434
Hom.:
0
Bravo
AF:
0.0000718
EpiCase
AF:
0.000164
EpiControl
AF:
0.000119

ClinVar

ClinVar submissions as Germline
Significance:Uncertain significance
Revision:criteria provided, multiple submitters, no conflicts
View on ClinVar
Pathogenic
VUS
Benign
Condition
-
1
-
Hereditary cancer-predisposing syndrome (1)
-
1
-
not provided (1)
-
1
-
not specified (1)
-
1
-
Tietz syndrome;C1860339:Waardenburg syndrome type 2A;C3152204:Melanoma, cutaneous malignant, susceptibility to, 8 (1)
-
1
-
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
BayesDel_noAF
Benign
-0.21
CADD
Pathogenic
28
DANN
Benign
0.70
PhyloP100
2.0
Mutation Taster
=92/8
polymorphism

Splicing

Name
Calibrated prediction
Score
Prediction
dbscSNV1_ADA
Benign
0.0096
dbscSNV1_RF
Benign
0.16
SpliceAI score (max)
0.74
Details are displayed if max score is > 0.2
DS_AG_spliceai
0.74
Position offset: 1
DS_AL_spliceai
0.46
Position offset: 9

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

Other links and lift over

dbSNP: rs766938558; hg19: chr3-70000954; API