rs768807060

Variant names:

• chr22-30934854-C-T
• rs768807060
• NM_001303256.3:c.2120G>A

Variant summary

Our verdict is Benign. The variant received -10 ACMG points: 0P and 10B. BP4_Moderate BS1 BS2

The NM_001303256.3(MORC2):​c.2120G>A​(p.Arg707Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000198 in 1,613,984 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R707G) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 31)
  • Exomes 𝑓: 0.000021 (0 hom.)
• Consequence: MORC2 NM_001303256.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.185
• Publications: 0 publications found

Genes affected

MORC2 (HGNC:23573): (MORC family CW-type zinc finger 2) This gene encodes a member of the Microrchidia (MORC) protein superfamily. The encoded protein is known to regulate the condensation of heterochromatin in response to DNA damage and play a role in repressing transcription. The protein has been found to regulate the activity of ATP citrate lyase via specific interaction with this enzyme in the cytosol of lipogenic breast cancer cells. The protein also plays a role in lipogenesis and adipocyte differentiation. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Feb 2016]

MORC2 Gene-Disease associations (from GenCC):

• Charcot-Marie-Tooth disease axonal type 2Z

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), ClinGen
• developmental delay, impaired growth, dysmorphic facies, and axonal neuropathy

  Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
• Leigh syndrome

  Inheritance: AD Classification: LIMITED Submitted by: ClinGen

ACMG classification

Our verdict: Benign. The variant received -10 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.06810889).
• BS1: Variant frequency is greater than expected in population sas. GnomAdExome4 allele frequency = 0.0000212 (31/1461886) while in subpopulation SAS AF = 0.000232 (20/86252). AF 95% confidence interval is 0.000153. There are 0 homozygotes in GnomAdExome4. There are 15 alleles in the male GnomAdExome4 subpopulation. Median coverage is 32. This position passed quality control check.
• BS2: High AC in GnomAdExome4 at 31 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001303256.3. 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
	MORC2	NM_001303256.3	MANE Select	c.2120G>A	p.Arg707Gln	missense	Exon 19 of 26	NP_001290185.1	Q9Y6X9-1
	MORC2	NM_001303257.2		c.2120G>A	p.Arg707Gln	missense	Exon 19 of 26	NP_001290186.1	Q9Y6X9
	MORC2	NM_014941.3		c.1934G>A	p.Arg645Gln	missense	Exon 20 of 27	NP_055756.1	Q9Y6X9-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MORC2	ENST00000397641.8	TSL:5 MANE Select	c.2120G>A	p.Arg707Gln	missense	Exon 19 of 26	ENSP00000380763.2	Q9Y6X9-1
	MORC2	ENST00000215862.8	TSL:1	c.1934G>A	p.Arg645Gln	missense	Exon 20 of 27	ENSP00000215862.4	Q9Y6X9-2
	MORC2	ENST00000924805.1		c.2120G>A	p.Arg707Gln	missense	Exon 19 of 26	ENSP00000594864.1

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152098 Hom.: 0 Cov.: 31

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.000193

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: 0.0000358 AC: 9 AN: 251446 AF XY: 0.0000368

Gnomad AFR exome AF: 0.00

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: 0.0000212 AC: 31 AN: 1461886 Hom.: 0 Cov.: 32 AF XY: 0.0000206 AC XY: 15 AN XY: 727242

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

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.0000252 AC: 1 AN: 39700

South Asian (SAS) AF: 0.000232 AC: 20 AN: 86252

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53420

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00000809 AC: 9 AN: 1112010

Other (OTH) AF: 0.0000166 AC: 1 AN: 60396

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152098 Hom.: 0 Cov.: 31 AF XY: 0.0000135 AC XY: 1 AN XY: 74308

African (AFR) AF: 0.00 AC: 0 AN: 41392

American (AMR) AF: 0.00 AC: 0 AN: 15276

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3466

East Asian (EAS) AF: 0.000193 AC: 1 AN: 5194

South Asian (SAS) AF: 0.00 AC: 0 AN: 4822

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10608

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

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68024

Other (OTH) AF: 0.00 AC: 0 AN: 2088

ExAC AF: 0.0000412 AC: 5

EpiCase AF: 0.0000545

EpiControl AF: 0.00

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	Charcot-Marie-Tooth disease axonal type 2Z (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.069
BayesDel_addAF	Benign	-0.53	T
BayesDel_noAF	Benign	-0.70
CADD	Benign	19
DANN	Benign	0.88
DEOGEN2	Benign	0.022	T
Eigen	Benign	-0.50
Eigen_PC	Benign	-0.59
FATHMM_MKL	Benign	0.18	N
LIST_S2	Benign	0.83	T
M_CAP	Benign	0.0044	T
MetaRNN	Benign	0.068	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.63	N
PhyloP100		0.18
PrimateAI	Benign	0.23	T
PROVEAN	Benign	0.17	N
REVEL	Benign	0.029
Sift	Benign	0.32	T
Sift4G	Benign	0.67	T
Polyphen		0.71	P
Vest4		0.11
MutPred		0.22		Gain of solvent accessibility (P = 0.0062)
MVP		0.34
MPC		0.17
ClinPred		0.055	T
GERP RS		3.4
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.034
gMVP		0.34
Mutation Taster		=97/3	polymorphism

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: rs768807060; hg19: chr22-31330841; COSMIC: COSV53197428; COSMIC: COSV53197428;