dbSNP rs145386484: MARCHF4:p.Trp13Cys (chr2-216370222-C-A) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_020814.3(MARCHF4):c.39G>T(p.Trp13Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000187 in 1,606,738 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another nucleotide change resulting in the same amino acid substitution has been previously reported as Likely benign in ClinVar.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

MARCHF4
NM_020814.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -2.38

Publications

1 publications found

Variant links:

Genes affected

MARCHF4 (HGNC:29269): (membrane associated ring-CH-type finger 4) MARCH4 is a member of the MARCH family of membrane-bound E3 ubiquitin ligases (EC 6.3.2.19). MARCH enzymes add ubiquitin (see MIM 191339) to target lysines in substrate proteins, thereby signaling their vesicular transport between membrane compartments. MARCH4 reduces surface accumulation of several membrane glycoproteins by directing them to the endosomal compartment (Bartee et al., 2004 [PubMed 14722266]).[supplied by OMIM, Apr 2010]

MARCHF4 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.036571175).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MARCHF4	NM_020814.3 link	c.39G>T	p.Trp13Cys	missense_variant	Exon 1 of 4	ENST00000273067.5	NP_065865.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MARCHF4	ENST00000273067.5 link	c.39G>T	p.Trp13Cys	missense_variant	Exon 1 of 4	1	NM_020814.3	ENSP00000273067.3		Q9P2E8

Frequencies

GnomAD3 genomes

AF:

0.00000658

AC:

AN:

152080

Hom.:

Cov.:

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1454658

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

722586

show subpopulations

African (AFR)

AF:

0.0000600

AC:

AN:

33336

American (AMR)

AF:

0.00

AC:

AN:

44346

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25938

East Asian (EAS)

AF:

0.00

AC:

AN:

39498

South Asian (SAS)

AF:

0.00

AC:

AN:

85696

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52870

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5738

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1107216

Other (OTH)

AF:

0.00

AC:

AN:

60020

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.00000658

AC:

AN:

152080

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74276

show subpopulations

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.0000241

AC:

AN:

41408

American (AMR)

AF:

0.00

AC:

AN:

15276

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5190

South Asian (SAS)

AF:

0.00

AC:

AN:

4820

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10604

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

67996

Other (OTH)

AF:

0.00

AC:

AN:

2088

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.375

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.21

BayesDel_addAF

Benign

-0.31

BayesDel_noAF

Benign

-0.68

CADD

Benign

4.9

(source)

DANN

Benign

0.75

DEOGEN2

Benign

0.026

Eigen

Benign

-0.84

Eigen_PC

Benign

-0.77

FATHMM_MKL

Benign

0.085

LIST_S2

Benign

0.56

M_CAP

Benign

0.0063

MetaRNN

Benign

0.037

MetaSVM

Benign

-1.0

MutationAssessor

Benign

-0.55

PhyloP100

-2.4

PrimateAI

Benign

0.38

PROVEAN

Benign

-0.040

REVEL

Benign

0.038

Sift

Benign

0.35

Sift4G

Uncertain

0.047

Polyphen

0.0

Vest4

0.23

MutPred

0.53

Loss of helix (P = 0.0558);

MVP

0.18

MPC

0.84

ClinPred

0.13

GERP RS

-0.19

Varity_R

0.075

gMVP

0.45

Mutation Taster

=88/12

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over