8-47962049-A-G

Position:

chr8-47962049-A-G

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBA1

The NM_182746.3(MCM4):c.236-4A>G variant causes a splice region, splice polypyrimidine tract, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00336 in 1,613,306 control chromosomes in the GnomAD database, including 283 homozygotes. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.0048 ( 45 hom., cov: 33)

Exomes 𝑓: 0.0032 ( 238 hom. )

Consequence

MCM4
NM_182746.3 splice_region, splice_polypyrimidine_tract, intron

Scores

Splicing: ADA: 0.003199

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:2

Conservation

PhyloP100: -0.240

Variant links:

Genes affected

MCM4 (HGNC:6947): (minichromosome maintenance complex component 4) 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 MCM proteins is a key component of the pre-replication complex (pre_RC) and may be involved in the formation of replication forks and in the recruitment of other DNA replication related proteins. The MCM complex consisting of this protein and MCM2, 6 and 7 proteins possesses DNA helicase activity, and may act as a DNA unwinding enzyme. The phosphorylation of this protein by CDC2 kinase reduces the DNA helicase activity and chromatin binding of the MCM complex. This gene is mapped to a region on the chromosome 8 head-to-head next to the PRKDC/DNA-PK, a DNA-activated protein kinase involved in the repair of DNA double-strand breaks. Alternatively spliced transcript variants encoding the same protein have been reported. [provided by RefSeq, Jul 2008]

MCM4 links:

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -20 ACMG points.

BP4

This place is a probable branch point but likely benign (scored 3 / 10). Computational evidence support a benign effect (BayesDel_noAF=-0.76).

BP6

Variant 8-47962049-A-G is Benign according to our data. Variant chr8-47962049-A-G is described in ClinVar as [Benign]. Clinvar id is 363215.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BA1

GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.118 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MCM4	NM_182746.3 linkuse as main transcript	c.236-4A>G		splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant		ENST00000649973.1	NP_877423.1
MCM4	NM_005914.4 linkuse as main transcript	c.236-4A>G		splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant			NP_005905.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MCM4	ENST00000649973.1 linkuse as main transcript	c.236-4A>G		splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant			NM_182746.3	ENSP00000496964	P1

Frequencies

GnomAD3 genomes

AF:

0.00478

AC:

727

AN:

152172

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000531

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000523

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.125

Gnomad SAS

AF:

0.00703

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000103

Gnomad OTH

AF:

0.00334

GnomAD3 exomes

AF:

0.00994

AC:

2486

AN:

249976

Hom.:

151

AF XY:

0.00920

AC XY:

1245

AN XY:

135392

show subpopulations

Gnomad AFR exome

AF:

0.000568

Gnomad AMR exome

AF:

0.000291

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.128

Gnomad SAS exome

AF:

0.00257

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000971

Gnomad OTH exome

AF:

0.00428

GnomAD4 exome

AF:

0.00321

AC:

4696

AN:

1461016

Hom.:

238

Cov.:

AF XY:

0.00323

AC XY:

2344

AN XY:

726800

show subpopulations

Gnomad4 AFR exome

AF:

0.000209

Gnomad4 AMR exome

AF:

0.000292

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0976

Gnomad4 SAS exome

AF:

0.00279

Gnomad4 FIN exome

AF:

0.0000187

Gnomad4 NFE exome

AF:

0.000111

Gnomad4 OTH exome

AF:

0.00714

GnomAD4 genome

AF:

0.00477

AC:

727

AN:

152290

Hom.:

Cov.:

AF XY:

0.00537

AC XY:

400

AN XY:

74482

show subpopulations

Gnomad4 AFR

AF:

0.000529

Gnomad4 AMR

AF:

0.000523

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.126

Gnomad4 SAS

AF:

0.00683

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000103

Gnomad4 OTH

AF:

0.00331

Alfa

AF:

0.000821

Hom.:

Bravo

AF:

0.00542

Asia WGS

AF:

0.0400

AC:

137

AN:

3478

EpiCase

AF:

0.000109

EpiControl

AF:

0.000119

ClinVar

Significance: Benign

Submissions summary: Benign:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:1

Benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 31, 2024

- -

Primary immunodeficiency with natural-killer cell deficiency and adrenal insufficiency

Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.76

CADD

Benign

4.4

DANN

Benign

0.80

BranchPoint Hunter

3.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.0

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.0032

dbscSNV1_RF

Benign

0.28

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