6-52272306-C-T

Variant names:

• chr6-52272306-C-T
• rs754057696
• NM_002388.6:c.1822G>A

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_002388.6(MCM3):​c.1822G>A​(p.Ala608Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000173 in 1,613,892 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 33)
  • Exomes 𝑓: 0.000018 (0 hom.)
• Consequence: MCM3 NM_002388.6 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.39
• Publications: 2 publications found

Genes affected

MCM3 (HGNC:6945): (minichromosome maintenance complex component 3) The protein encoded by this gene is one of the highly conserved mini-chromosome maintenance proteins (MCM) that are involved in 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. This protein is a subunit of the protein complex that consists of MCM2-7. It has been shown to interact directly with MCM5/CDC46. This protein also interacts with and is acetylated by MCM3AP, a chromatin-associated acetyltransferase. The acetylation of this protein inhibits the initiation of DNA replication and cell cycle progression. Several transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Oct 2018]

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002388.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MCM3	NM_002388.6	MANE Select	c.1822G>A	p.Ala608Thr	missense	Exon 12 of 17	NP_002379.4
	MCM3	NM_001366369.2		c.1822G>A	p.Ala608Thr	missense	Exon 12 of 18	NP_001353298.1	A0A0S2Z492
	MCM3	NM_001366370.2		c.1873G>A	p.Ala625Thr	missense	Exon 12 of 17	NP_001353299.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MCM3	ENST00000596288.7	TSL:1 MANE Select	c.1822G>A	p.Ala608Thr	missense	Exon 12 of 17	ENSP00000472940.2	P25205-1
	MCM3	ENST00000616552.4	TSL:1	c.1957G>A	p.Ala653Thr	missense	Exon 12 of 17	ENSP00000480987.1	P25205-2
	MCM3	ENST00000229854.12	TSL:1	c.1852G>A	p.Ala618Thr	missense	Exon 11 of 16	ENSP00000229854.6	A0A499FHX9

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152230 Hom.: 0 Cov.: 33

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

GnomAD2 exomes AF: 0.0000120 AC: 3 AN: 251000 AF XY: 0.00000737

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000289

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000176

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000185 AC: 27 AN: 1461662 Hom.: 0 Cov.: 31 AF XY: 0.0000234 AC XY: 17 AN XY: 727128

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.0000224 AC: 1 AN: 44708

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26122

East Asian (EAS) AF: 0.00 AC: 0 AN: 39696

South Asian (SAS) AF: 0.0000116 AC: 1 AN: 86236

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53368

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5756

European-Non Finnish (NFE) AF: 0.0000216 AC: 24 AN: 1111910

Other (OTH) AF: 0.0000166 AC: 1 AN: 60386

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152230 Hom.: 0 Cov.: 33 AF XY: 0.0000134 AC XY: 1 AN XY: 74384

African (AFR) AF: 0.0000241 AC: 1 AN: 41456

American (AMR) AF: 0.00 AC: 0 AN: 15278

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5208

South Asian (SAS) AF: 0.00 AC: 0 AN: 4834

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10620

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68042

Other (OTH) AF: 0.00 AC: 0 AN: 2094

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000756

ExAC AF: 0.00000824 AC: 1

EpiCase AF: 0.0000546

EpiControl AF: 0.0000593

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.50
BayesDel_addAF	Uncertain	0.076	D
BayesDel_noAF	Uncertain	-0.050
CADD	Pathogenic	29
DANN	Uncertain	1.0
DEOGEN2	Benign	0.17	T
Eigen	Uncertain	0.51
Eigen_PC	Uncertain	0.53
FATHMM_MKL	Uncertain	0.94	D
LIST_S2	Uncertain	0.96	D
M_CAP	Benign	0.026	D
MetaRNN	Uncertain	0.56	D
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	1.8	L
PhyloP100		7.4
PrimateAI	Uncertain	0.65	T
PROVEAN	Uncertain	-3.0	D
REVEL	Benign	0.20
Sift	Benign	0.13	T
Sift4G	Benign	0.43	T
Polyphen		1.0	D
Vest4		0.79
MutPred		0.30		Gain of phosphorylation at A608 (P = 0.0078)
MVP		0.75
MPC		0.44
ClinPred		0.95	D
GERP RS		5.3
RBP_binding_hub_radar		0.92
RBP_regulation_power_radar		2.0
Varity_R		0.41
gMVP		0.38
Mutation Taster		=36/64	disease causing

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

Other links and lift over

dbSNP: rs754057696; hg19: chr6-52137104; COSMIC: COSV57719382; COSMIC: COSV57719382;