12-57755601-C-G

Variant names:

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_138396.6(MARCHF9):c.73C>G(p.Arg25Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000446 in 1,355,750 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00040 ( 0 hom., cov: 29)

Exomes 𝑓: 0.00045 ( 1 hom. )

Consequence

MARCHF9
NM_138396.6 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.07

Variant links:

Genes affected

MARCHF9 (HGNC:25139): (membrane associated ring-CH-type finger 9) MARCH9 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. MARCH9 induces internalization of several membrane glycoproteins and directs them to the endosomal compartment (Bartee et al., 2004 [PubMed 14722266]; Hoer et al., 2007 [PubMed 17174307]).[supplied by OMIM, Apr 2010]

MARCHF9 links:

CDK4 (HGNC:1773): (cyclin dependent kinase 4) The protein encoded by this gene is a member of the Ser/Thr protein kinase family. This protein is highly similar to the gene products of S. cerevisiae cdc28 and S. pombe cdc2. It is a catalytic subunit of the protein kinase complex that is important for cell cycle G1 phase progression. The activity of this kinase is restricted to the G1-S phase, which is controlled by the regulatory subunits D-type cyclins and CDK inhibitor p16(INK4a). This kinase was shown to be responsible for the phosphorylation of retinoblastoma gene product (Rb). Mutations in this gene as well as in its related proteins including D-type cyclins, p16(INK4a) and Rb were all found to be associated with tumorigenesis of a variety of cancers. Multiple polyadenylation sites of this gene have been reported. [provided by RefSeq, Jul 2008]

CDK4 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.020781755).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MARCHF9	NM_138396.6 link	c.73C>G	p.Arg25Gly	missense_variant	Exon 1 of 4	ENST00000266643.6	NP_612405.2
MARCHF9	XM_047429894.1 link	c.73C>G	p.Arg25Gly	missense_variant	Exon 1 of 3		XP_047285850.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
MARCHF9	ENST00000266643.6 link	c.73C>G	p.Arg25Gly	missense_variant	Exon 1 of 4	1	NM_138396.6	ENSP00000266643.5	Q86YJ5-1
CDK4	ENST00000552862.1 link	c.-20+331G>C		intron_variant	Intron 1 of 2	3		ENSP00000446763.1	F8W1L8
MARCHF9	ENST00000552279.1 link	n.-127C>G		upstream_gene_variant		2

Frequencies

GnomAD3 genomes

AF:

0.000398

AC:

AN:

150604

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000728

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000592

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000625

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000670

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000922

AC:

AN:

21702

Hom.:

AF XY:

0.000976

AC XY:

AN XY:

13324

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00151

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00172

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000902

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000452

AC:

545

AN:

1205046

Hom.:

Cov.:

AF XY:

0.000466

AC XY:

275

AN XY:

590382

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000647

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00108

Gnomad4 FIN exome

AF:

0.0000326

Gnomad4 NFE exome

AF:

0.000467

Gnomad4 OTH exome

AF:

0.000372

GnomAD4 genome

AF:

0.000398

AC:

AN:

150704

Hom.:

Cov.:

AF XY:

0.000381

AC XY:

AN XY:

73524

show subpopulations

Gnomad4 AFR

AF:

0.0000726

Gnomad4 AMR

AF:

0.000591

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000626

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000670

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000253

Hom.:

Bravo

AF:

0.000355

ExAC

AF:

0.0000274

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jul 06, 2021

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.73C>G (p.R25G) alteration is located in exon 1 (coding exon 1) of the MARCH9 gene. This alteration results from a C to G substitution at nucleotide position 73, causing the arginine (R) at amino acid position 25 to be replaced by a glycine (G). 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

Benign

0.066

BayesDel_addAF

Benign

-0.59

BayesDel_noAF

Benign

-0.65

CADD

Benign

DANN

Benign

0.76

DEOGEN2

Benign

0.019

Eigen

Benign

-1.1

Eigen_PC

Benign

-1.1

FATHMM_MKL

Benign

0.17

LIST_S2

Benign

0.51

M_CAP

Benign

0.025

MetaRNN

Benign

0.021

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.90

PrimateAI

Pathogenic

0.85

PROVEAN

Benign

-0.81

REVEL

Benign

0.055

Sift

Benign

0.17

Sift4G

Benign

0.54

Polyphen

0.0010

Vest4

0.18

MutPred

0.28

Gain of catalytic residue at G21 (P = 0.0033);

MVP

0.18

MPC

1.5

ClinPred

0.015

GERP RS

1.3

Varity_R

0.096

gMVP

0.24

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

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