rs769714352

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 0P and 1B. BP4

The NM_032485.6(MCM8):c.206T>G(p.Leu69Trp) variant causes a missense change. The variant allele was found at a frequency of 0.0000143 in 1,613,956 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000089 ( 0 hom. )

Consequence

MCM8
NM_032485.6 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 6.26

Publications

0 publications found

Variant links:

Genes affected

MCM8 (HGNC:16147): (minichromosome maintenance 8 homologous recombination repair factor) The protein encoded by this gene is one of the highly conserved mini-chromosome maintenance proteins (MCM) that are essential for the initiation of eukaryotic genome replication. The hexameric protein complex formed by the mini-chromosome maintenance proteins is a key component of the pre-replication complex and may be involved in the formation of replication forks and in the recruitment of other DNA replication related proteins. This protein contains the central domain that is conserved among the mini-chromosome maintenance proteins. The encoded protein may interact with other mini-chromosome maintenance proteins and play a role in DNA replication. This gene may be associated with length of reproductive lifespan and menopause. Alternatively spliced transcript variants encoding distinct isoforms have been described. [provided by RefSeq, Jul 2013]

MCM8 Gene-Disease associations (from GenCC):

premature ovarian failure 10
Inheritance: AR, AD Classification: STRONG, MODERATE, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics
colorectal cancer
Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

MCM8 links:

ENSG00000286235 (HGNC:):

ENSG00000286235 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

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

BP4

Computational evidence support a benign effect (MetaRNN=0.31733176).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MCM8	NM_032485.6 link	c.206T>G	p.Leu69Trp	missense_variant	Exon 3 of 19	ENST00000610722.4	NP_115874.3	Q9UJA3-1B4DN82

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MCM8	ENST00000610722.4 link	c.206T>G	p.Leu69Trp	missense_variant	Exon 3 of 19	1	NM_032485.6	ENSP00000478141.1		Q9UJA3-1
ENSG00000286235	ENST00000652720.1 link	c.206T>G	p.Leu69Trp	missense_variant	Exon 3 of 24			ENSP00000498784.1		A0A494C100

Frequencies

GnomAD3 genomes

AF:

0.0000657

AC:

AN:

152182

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000241

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

GnomAD2 exomes

AF:

0.0000239

AC:

AN:

251326

AF XY:

0.0000221

show subpopulations

Gnomad AFR exome

AF:

0.000308

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.00000889

AC:

AN:

1461774

Hom.:

Cov.:

AF XY:

0.0000110

AC XY:

AN XY:

727180

show subpopulations

African (AFR)

AF:

0.000329

AC:

AN:

33478

American (AMR)

AF:

0.00

AC:

AN:

44722

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26130

East Asian (EAS)

AF:

0.00

AC:

AN:

39664

South Asian (SAS)

AF:

0.00

AC:

AN:

86244

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53410

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1111970

Other (OTH)

AF:

0.0000166

AC:

AN:

60390

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.467

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.0000657

AC:

AN:

152182

Hom.:

Cov.:

AF XY:

0.0000673

AC XY:

AN XY:

74344

show subpopulations

African (AFR)

AF:

0.000241

AC:

AN:

41444

American (AMR)

AF:

0.00

AC:

AN:

15288

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5196

South Asian (SAS)

AF:

0.00

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10614

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68024

Other (OTH)

AF:

0.00

AC:

AN:

2090

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.500

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.000132

Hom.:

Bravo

AF:

0.000117

ExAC

AF:

0.0000247

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

May 07, 2025

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.206T>G (p.L69W) alteration is located in exon 3 (coding exon 2) of the MCM8 gene. This alteration results from a T to G substitution at nucleotide position 206, causing the leucine (L) at amino acid position 69 to be replaced by a tryptophan (W). 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

0.24

BayesDel_addAF

Benign

-0.14

BayesDel_noAF

Benign

-0.13

CADD

Uncertain

(source)

DANN

Benign

0.96

DEOGEN2

Benign

0.060

.;T;.;T;.

Eigen

Pathogenic

0.69

Eigen_PC

Pathogenic

0.68

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.88

D;D;D;.;D

M_CAP

Benign

0.032

MetaRNN

Benign

0.32

T;T;T;T;T

MetaSVM

Benign

-0.70

MutationAssessor

Uncertain

2.5

M;M;M;M;M

PhyloP100

6.3

PrimateAI

Uncertain

0.57

PROVEAN

Uncertain

-2.5

N;N;N;.;N

REVEL

Benign

0.23

Sift

Uncertain

0.0050

D;D;D;.;D

Sift4G

Benign

0.18

T;T;T;T;T

Polyphen

1.0

D;D;.;D;D

Vest4

0.52

MVP

0.76

MPC

0.75

ClinPred

0.30

GERP RS

6.1

Varity_R

0.19

gMVP

0.68

Mutation Taster

=37/63

disease causing

(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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rs769714352

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over