Variant 2-24021655-T-C details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_001346880.2(MFSD2B):c.689T>C(p.Leu230Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000156 in 1,612,706 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000092 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00016 ( 1 hom. )

Consequence

MFSD2B
NM_001346880.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.896

Variant links:

Genes affected

MFSD2B (HGNC:37207): (MFSD2 lysolipid transporter B, sphingolipid) Enables sphingolipid transporter activity. Involved in lipid transport. Is integral component of plasma membrane. [provided by Alliance of Genome Resources, Apr 2022]

MFSD2B links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.91

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
MFSD2B	NM_001346880.2 linkuse as main transcript	c.689T>C	p.Leu230Pro	missense_variant	7/14	ENST00000338315.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris
MFSD2B	ENST00000338315.6 linkuse as main transcript	c.689T>C	p.Leu230Pro	missense_variant	7/14	5	NM_001346880.2	P2
MFSD2B	ENST00000469562.1 linkuse as main transcript	n.125T>C		non_coding_transcript_exon_variant	2/8	1
MFSD2B	ENST00000669179.1 linkuse as main transcript	c.773T>C	p.Leu258Pro	missense_variant	8/15			A2
MFSD2B	ENST00000406420.7 linkuse as main transcript	c.689T>C	p.Leu230Pro	missense_variant	7/13	5		A2

Frequencies

GnomAD3 genomes

AF:

0.0000920

AC:

AN:

152228

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

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:

0.000191

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000568

AC:

AN:

246678

Hom.:

AF XY:

0.0000523

AC XY:

AN XY:

133888

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000292

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:

0.000116

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000163

AC:

238

AN:

1460478

Hom.:

Cov.:

AF XY:

0.000158

AC XY:

115

AN XY:

726358

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000449

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:

0.000194

Gnomad4 OTH exome

AF:

0.000331

GnomAD4 genome

AF:

0.0000920

AC:

AN:

152228

Hom.:

Cov.:

AF XY:

0.0000941

AC XY:

AN XY:

74366

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.0000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000191

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000987

Hom.:

Bravo

AF:

0.0000945

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.00

AC:

ExAC

AF:

0.0000496

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 03, 2022

The c.689T>C (p.L230P) alteration is located in exon 7 (coding exon 7) of the MFSD2B gene. This alteration results from a T to C substitution at nucleotide position 689, causing the leucine (L) at amino acid position 230 to be replaced by a proline (P). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.36

BayesDel_addAF

Uncertain

0.014

BayesDel_noAF

Uncertain

0.010

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.35

.;T

Eigen

Uncertain

0.28

Eigen_PC

Uncertain

0.23

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Benign

0.67

T;T

M_CAP

Uncertain

0.28

MetaRNN

Pathogenic

0.91

D;D

MetaSVM

Uncertain

0.32

MutationAssessor

Benign

1.8

.;L

MutationTaster

Benign

1.0

D;D

PrimateAI

Uncertain

0.53

PROVEAN

Benign

-2.3

N;N

REVEL

Pathogenic

0.72

Sift

Benign

0.088

T;D

Sift4G

Uncertain

0.038

D;D

Polyphen

0.99

.;D

Vest4

0.81

MVP

0.86

MPC

0.47

ClinPred

0.26

GERP RS

4.7

Varity_R

0.70

gMVP

0.81

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.050

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over