8-66890892-C-G

Variant names:

• chr8-66890892-C-G
• rs112645348
• NM_173518.5:c.1101C>G

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2 BP4_Strong BP7

The NM_173518.5(MCMDC2):​c.1101C>G​(p.Val367Val) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000434 in 1,611,590 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. V367V) has been classified as Benign.

• Frequency:
  • Genomes: 𝑓 0.000033 (0 hom., cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: MCMDC2 NM_173518.5 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.0510
• Publications: 0 publications found

Genes affected

MCMDC2 (HGNC:26368): (minichromosome maintenance domain containing 2) Predicted to enable ATP binding activity and DNA binding activity. Predicted to be involved in double-strand break repair via break-induced replication. Predicted to act upstream of or within gamete generation and meiosis I cell cycle process. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Our verdict: Likely_benign. The variant received -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.73).
• BP7: Synonymous conserved (PhyloP=-0.051 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_173518.5. 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
	MCMDC2	NM_173518.5	MANE Select	c.1101C>G	p.Val367Val	synonymous	Exon 10 of 15	NP_775789.3
	MCMDC2	NM_001136160.2		c.1101C>G	p.Val367Val	synonymous	Exon 10 of 14	NP_001129632.1	B4DXX4
	MCMDC2	NM_001136161.2		c.1101C>G	p.Val367Val	synonymous	Exon 10 of 13	NP_001129633.1	Q4G0Z9-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MCMDC2	ENST00000422365.7	TSL:2 MANE Select	c.1101C>G	p.Val367Val	synonymous	Exon 10 of 15	ENSP00000413632.2	Q4G0Z9-1
	MCMDC2	ENST00000396592.7	TSL:1	c.1101C>G	p.Val367Val	synonymous	Exon 10 of 13	ENSP00000379837.3	Q4G0Z9-2
	MCMDC2	ENST00000872356.1		c.1047C>G	p.Val349Val	synonymous	Exon 10 of 15	ENSP00000542415.1

Frequencies

GnomAD3 genomes AF: 0.0000329 AC: 5 AN: 152012 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.000121

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: 0.00000803 AC: 2 AN: 249116 AF XY: 0.00

Gnomad AFR exome AF: 0.000124

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: 0.00

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1459578 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 725854

African (AFR) AF: 0.0000599 AC: 2 AN: 33370

American (AMR) AF: 0.00 AC: 0 AN: 44270

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26098

East Asian (EAS) AF: 0.00 AC: 0 AN: 39628

South Asian (SAS) AF: 0.00 AC: 0 AN: 85288

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53392

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5760

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1111440

Other (OTH) AF: 0.00 AC: 0 AN: 60332

GnomAD4 genome AF: 0.0000329 AC: 5 AN: 152012 Hom.: 0 Cov.: 32 AF XY: 0.0000269 AC XY: 2 AN XY: 74240

African (AFR) AF: 0.000121 AC: 5 AN: 41372

American (AMR) AF: 0.00 AC: 0 AN: 15260

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

East Asian (EAS) AF: 0.00 AC: 0 AN: 5190

South Asian (SAS) AF: 0.00 AC: 0 AN: 4828

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10588

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

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 67984

Other (OTH) AF: 0.00 AC: 0 AN: 2092

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.0000416

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.73
CADD	Benign	2.0
DANN	Benign	0.44
PhyloP100		-0.051

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: rs112645348; hg19: chr8-67803127;