3-127599359-G-T
Variant summary
Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong
The NM_004526.4(MCM2):c.48G>T(p.Gln16His) 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. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).
Frequency
Genomes: not found (cov: 33)
Consequence
MCM2
NM_004526.4 missense
NM_004526.4 missense
Scores
19
Clinical Significance
Conservation
PhyloP100: 0.0360
Genes affected
MCM2 (HGNC:6944): (minichromosome maintenance complex component 2) 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 forms a complex with MCM4, 6, and 7, and has been shown to regulate the helicase activity of the complex. This protein is phosphorylated, and thus regulated by, protein kinases CDC2 and CDC7. Multiple alternatively spliced transcript variants have been found, but the full-length nature of some variants has not been defined. [provided by RefSeq, Oct 2012]
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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=0.058360904).
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
MCM2 | NM_004526.4 | c.48G>T | p.Gln16His | missense_variant | 2/16 | ENST00000265056.12 | |
MCM2 | XM_024453531.2 | c.21G>T | p.Gln7His | missense_variant | 2/16 | ||
MCM2 | NR_073375.2 | n.104G>T | non_coding_transcript_exon_variant | 2/16 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
MCM2 | ENST00000265056.12 | c.48G>T | p.Gln16His | missense_variant | 2/16 | 1 | NM_004526.4 | P1 | |
MCM2 | ENST00000480910.1 | c.21G>T | p.Gln7His | missense_variant | 2/3 | 2 | |||
MCM2 | ENST00000472731.1 | c.21G>T | p.Gln7His | missense_variant | 1/2 | 2 | |||
MCM2 | ENST00000474964.5 | c.48G>T | p.Gln16His | missense_variant, NMD_transcript_variant | 2/16 | 2 |
Frequencies
GnomAD3 genomes ? Cov.: 33
GnomAD3 genomes
?
Cov.:
33
GnomAD4 exome Cov.: 30
GnomAD4 exome
Cov.:
30
GnomAD4 genome ? Cov.: 33
GnomAD4 genome
?
Cov.:
33
Alfa
AF:
Hom.:
Bravo
AF:
ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
not provided Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Apr 17, 2021 | In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated, but these predictions have not been confirmed by published functional studies and their clinical significance is uncertain. This variant has not been reported in the literature in individuals with MCM2-related conditions. This variant is not present in population databases (ExAC no frequency). This sequence change replaces glutamine with histidine at codon 16 of the MCM2 protein (p.Gln16His). The glutamine residue is weakly conserved and there is a small physicochemical difference between glutamine and histidine. - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
BayesDel_addAF
Benign
T
BayesDel_noAF
Benign
Cadd
Benign
Dann
Benign
DEOGEN2
Benign
T;.;T
Eigen
Benign
Eigen_PC
Benign
FATHMM_MKL
Benign
N
LIST_S2
Benign
T;T;T
M_CAP
Benign
T
MetaRNN
Benign
T;T;T
MetaSVM
Benign
T
MutationAssessor
Benign
N;.;.
MutationTaster
Benign
N
PrimateAI
Benign
T
PROVEAN
Benign
N;N;N
REVEL
Benign
Sift
Benign
T;T;T
Sift4G
Benign
T;T;T
Polyphen
B;.;.
Vest4
MutPred
Gain of catalytic residue at Q16 (P = 0.0526);.;.;
MVP
MPC
ClinPred
T
GERP RS
RBP_binding_hub_radar
RBP_regulation_power_radar
Varity_R
gMVP
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at