rs76506918

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 2P and 3B. PM2BP4_ModerateBP6

The NM_001371596.2(MFSD8):​c.961G>A​(p.Val321Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000267 in 1,613,492 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 17/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Synonymous variant affecting the same amino acid position (i.e. V321V) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000053 ( 0 hom., cov: 33)
Exomes 𝑓: 0.000024 ( 0 hom. )

Consequence

MFSD8
NM_001371596.2 missense

Scores

18

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:3B:1

Conservation

PhyloP100: 0.776

Publications

2 publications found
Variant links:
Genes affected
MFSD8 (HGNC:28486): (major facilitator superfamily domain containing 8) This gene encodes a ubiquitous integral membrane protein that contains a transporter domain and a major facilitator superfamily (MFS) domain. Other members of the major facilitator superfamily transport small solutes through chemiosmotic ion gradients. The substrate transported by this protein is unknown. The protein likely localizes to lysosomal membranes. Mutations in this gene are correlated with a variant form of late infantile-onset neuronal ceroid lipofuscinoses (vLINCL). [provided by RefSeq, Oct 2008]
MFSD8 Gene-Disease associations (from GenCC):
  • neuronal ceroid lipofuscinosis
    Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
  • neuronal ceroid lipofuscinosis 7
    Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: G2P, Orphanet, Genomics England PanelApp, Labcorp Genetics (formerly Invitae)
  • macular dystrophy with central cone involvement
    Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -1 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.13317865).
BP6
Variant 4-127930720-C-T is Benign according to our data. Variant chr4-127930720-C-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 533369.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001371596.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
MFSD8
NM_001371596.2
MANE Select
c.961G>Ap.Val321Ile
missense
Exon 9 of 12NP_001358525.1Q8NHS3-1
MFSD8
NM_001371591.2
c.961G>Ap.Val321Ile
missense
Exon 9 of 12NP_001358520.1
MFSD8
NM_001371592.2
c.967G>Ap.Val323Ile
missense
Exon 9 of 12NP_001358521.1

Ensembl Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
MFSD8
ENST00000641686.2
MANE Select
c.961G>Ap.Val321Ile
missense
Exon 9 of 12ENSP00000493218.2Q8NHS3-1
MFSD8
ENST00000296468.8
TSL:1
c.961G>Ap.Val321Ile
missense
Exon 10 of 13ENSP00000296468.3Q8NHS3-1
MFSD8
ENST00000945724.1
c.949G>Ap.Val317Ile
missense
Exon 9 of 12ENSP00000615783.1

Frequencies

GnomAD3 genomes
AF:
0.0000526
AC:
8
AN:
152016
Hom.:
0
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.0000242
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.000207
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.0000882
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.0000318
AC:
8
AN:
251282
AF XY:
0.0000368
show subpopulations
Gnomad AFR exome
AF:
0.0000615
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.0000544
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000440
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000240
AC:
35
AN:
1461358
Hom.:
0
Cov.:
31
AF XY:
0.0000179
AC XY:
13
AN XY:
726962
show subpopulations
African (AFR)
AF:
0.0000299
AC:
1
AN:
33466
American (AMR)
AF:
0.00
AC:
0
AN:
44700
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26118
East Asian (EAS)
AF:
0.0000253
AC:
1
AN:
39586
South Asian (SAS)
AF:
0.0000116
AC:
1
AN:
86176
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53402
Middle Eastern (MID)
AF:
0.000174
AC:
1
AN:
5762
European-Non Finnish (NFE)
AF:
0.0000270
AC:
30
AN:
1111778
Other (OTH)
AF:
0.0000166
AC:
1
AN:
60370
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.428
Heterozygous variant carriers
0
3
6
8
11
14
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
2
4
6
8
10
<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:
0.0000526
AC:
8
AN:
152134
Hom.:
0
Cov.:
33
AF XY:
0.0000941
AC XY:
7
AN XY:
74396
show subpopulations
African (AFR)
AF:
0.0000241
AC:
1
AN:
41506
American (AMR)
AF:
0.00
AC:
0
AN:
15268
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3464
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5186
South Asian (SAS)
AF:
0.000207
AC:
1
AN:
4822
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10568
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
294
European-Non Finnish (NFE)
AF:
0.0000882
AC:
6
AN:
68002
Other (OTH)
AF:
0.00
AC:
0
AN:
2112
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.494
Heterozygous variant carriers
0
1
2
2
3
4
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Variant carriers
0
2
4
6
8
10
<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:
0.000120
Hom.:
0
Bravo
AF:
0.0000227
ESP6500AA
AF:
0.00
AC:
0
ESP6500EA
AF:
0.000233
AC:
2
ExAC
AF:
0.0000412
AC:
5
EpiCase
AF:
0.000109
EpiControl
AF:
0.00

ClinVar

ClinVar submissions
Significance:Conflicting classifications of pathogenicity
Revision:criteria provided, conflicting classifications
View on ClinVar
Pathogenic
VUS
Benign
Condition
-
-
1
Inborn genetic diseases (1)
-
1
-
Late-infantile neuronal ceroid lipofuscinosis (1)
-
1
-
Neuronal ceroid lipofuscinosis 7 (1)
-
1
-
not provided (1)

Computational scores

Source: dbNSFP v4.9

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.076
BayesDel_addAF
Benign
-0.27
T
BayesDel_noAF
Benign
-0.44
CADD
Benign
11
DANN
Benign
0.53
DEOGEN2
Benign
0.062
T
Eigen
Benign
-0.59
Eigen_PC
Benign
-0.59
FATHMM_MKL
Benign
0.69
D
LIST_S2
Benign
0.80
T
M_CAP
Benign
0.031
D
MetaRNN
Benign
0.13
T
MetaSVM
Benign
-0.80
T
MutationAssessor
Benign
0.39
N
PhyloP100
0.78
PrimateAI
Benign
0.34
T
PROVEAN
Benign
-0.12
N
REVEL
Benign
0.14
Sift
Benign
0.28
T
Sift4G
Benign
0.47
T
Polyphen
0.35
B
Vest4
0.19
MVP
0.68
MPC
0.081
ClinPred
0.026
T
GERP RS
2.4
Varity_R
0.014
gMVP
0.58
Mutation Taster
=92/8
polymorphism

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

Other links and lift over

dbSNP: rs76506918; hg19: chr4-128851875; COSMIC: COSV99614051; COSMIC: COSV99614051; API