Genetic Variant MCM3AP:p.Leu1950Val (chr21-46235363-G-C) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2BP4

The NM_003906.5(MCM3AP):c.5848C>G(p.Leu1950Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 13/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Synonymous variant affecting the same amino acid position (i.e. L1950L) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 33)

Consequence

MCM3AP
NM_003906.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.34

Publications

0 publications found

Variant links:

Genes affected

MCM3AP (HGNC:6946): (minichromosome maintenance complex component 3 associated protein) The minichromosome maintenance protein 3 (MCM3) is one of the MCM proteins essential for the initiation of DNA replication. The protein encoded by this gene is a MCM3 binding protein. It was reported to have phosphorylation-dependent DNA-primase activity, which was up-regulated in antigen immunization induced germinal center. This protein was demonstrated to be an acetyltransferase that acetylates MCM3 and plays a role in DNA replication. The mutagenesis of a nuclear localization signal of MCM3 affects the binding of this protein with MCM3, suggesting that this protein may also facilitate MCM3 nuclear localization. This gene is expressed in the brain or in neuronal tissue. An allelic variant encoding amino acid Lys at 915, instead of conserved Glu, has been identified in patients with mild intellectual disability. [provided by RefSeq, Jan 2014]

MCM3AP links:

MCM3AP-AS1 (HGNC:16417): (MCM3AP antisense RNA 1)

MCM3AP-AS1 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.39628917).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_003906.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
MCM3AP	NM_003906.5	MANE Select	c.5848C>G	p.Leu1950Val	missense	Exon 28 of 28	NP_003897.2
MCM3AP-AS1	NR_002776.4		n.37-5471G>C		intron	N/A
MCM3AP-AS1	NR_110565.1		n.237+4836G>C		intron	N/A

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
MCM3AP	ENST00000291688.6	TSL:1 MANE Select	c.5848C>G	p.Leu1950Val	missense	Exon 28 of 28	ENSP00000291688.1	O60318-1
MCM3AP-AS1	ENST00000420074.1	TSL:1	n.1857G>C		non_coding_transcript_exon	Exon 2 of 2
MCM3AP	ENST00000467026.5	TSL:1	n.2441C>G		non_coding_transcript_exon	Exon 13 of 13

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

Cov.:

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000756

ClinVar

ClinVar submissions

Significance:Uncertain significance

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.15

BayesDel_addAF

Benign

-0.10

BayesDel_noAF

Benign

-0.38

CADD

Benign

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.26

Eigen

Uncertain

0.29

Eigen_PC

Uncertain

0.23

FATHMM_MKL

Uncertain

0.93

LIST_S2

Benign

0.79

M_CAP

Benign

0.017

MetaRNN

Benign

0.40

MetaSVM

Benign

-1.1

MutationAssessor

Uncertain

2.7

PhyloP100

2.3

PrimateAI

Benign

0.39

PROVEAN

Benign

-1.3

REVEL

Benign

0.12

Sift

Pathogenic

0.0

Sift4G

Uncertain

0.015

Polyphen

1.0

Vest4

0.42

MutPred

0.29

Gain of MoRF binding (P = 0.073)

MVP

0.36

MPC

0.19

ClinPred

0.91

GERP RS

4.0

Varity_R

0.33

gMVP

0.46

Mutation Taster

=91/9

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

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over