rs140948465

Variant summary

Our verdict is Uncertain significance. Variant got 5 ACMG points: 5P and 0B. PM2PM5PP3

The NM_001371596.2(MFSD8):​c.881C>T​(p.Thr294Ile) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000808 in 1,609,022 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic 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. T294K) has been classified as Likely pathogenic.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)
Exomes 𝑓: 0.0000082 ( 0 hom. )

Consequence

MFSD8
NM_001371596.2 missense

Scores

4
12
3

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 8.51
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]

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 5 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
PM5
Other missense variant is known to change same aminoacid residue: Variant chr4-127930800-G-T is described in Lovd as [Likely_pathogenic].
PP3
MetaRNN computational evidence supports a deleterious effect, 0.769

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
MFSD8NM_001371596.2 linkuse as main transcriptc.881C>T p.Thr294Ile missense_variant 9/12 ENST00000641686.2 NP_001358525.1

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
MFSD8ENST00000641686.2 linkuse as main transcriptc.881C>T p.Thr294Ile missense_variant 9/12 NM_001371596.2 ENSP00000493218 P1Q8NHS3-1

Frequencies

GnomAD3 genomes
AF:
0.00000659
AC:
1
AN:
151716
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:
0.00
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.00
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.00000401
AC:
1
AN:
249426
Hom.:
0
AF XY:
0.00
AC XY:
0
AN XY:
134718
show subpopulations
Gnomad AFR exome
AF:
0.0000618
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000823
AC:
12
AN:
1457306
Hom.:
0
Cov.:
31
AF XY:
0.00000966
AC XY:
7
AN XY:
724654
show subpopulations
Gnomad4 AFR exome
AF:
0.0000300
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00000991
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
AF:
0.00000659
AC:
1
AN:
151716
Hom.:
0
Cov.:
33
AF XY:
0.00
AC XY:
0
AN XY:
74048
show subpopulations
Gnomad4 AFR
AF:
0.0000242
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
Bravo
AF:
0.0000113
ESP6500AA
AF:
0.000227
AC:
1
ESP6500EA
AF:
0.00
AC:
0
ExAC
AF:
0.00000824
AC:
1

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Uncertain
0.37
BayesDel_addAF
Uncertain
0.076
D
BayesDel_noAF
Uncertain
0.050
CADD
Pathogenic
28
DANN
Uncertain
1.0
DEOGEN2
Uncertain
0.46
T;T;.;.;.;.;.;.;.;.;.;.;.;.
Eigen
Uncertain
0.61
Eigen_PC
Uncertain
0.52
FATHMM_MKL
Pathogenic
0.99
D
LIST_S2
Pathogenic
0.97
.;.;D;D;D;.;D;D;D;D;D;D;D;D
M_CAP
Benign
0.040
D
MetaRNN
Pathogenic
0.77
D;D;D;D;D;D;D;D;D;D;D;D;D;D
MetaSVM
Benign
-0.37
T
MutationAssessor
Uncertain
2.9
M;M;.;.;.;.;.;.;.;.;.;.;.;.
MutationTaster
Benign
1.0
D;D;D
PrimateAI
Uncertain
0.57
T
PROVEAN
Pathogenic
-4.7
.;D;.;.;.;.;.;.;.;.;.;.;.;.
REVEL
Uncertain
0.44
Sift
Uncertain
0.0010
.;D;.;.;.;.;.;.;.;.;.;.;.;.
Sift4G
Uncertain
0.0050
.;D;.;.;.;.;.;.;.;.;.;.;.;.
Polyphen
1.0
D;D;.;.;.;.;.;.;.;.;.;.;.;.
Vest4
0.85
MVP
0.81
MPC
0.48
ClinPred
0.99
D
GERP RS
4.7
Varity_R
0.71
gMVP
0.76

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.

Other links and lift over

dbSNP: rs140948465; hg19: chr4-128851955; API