rs560948457

Positions:

chr22-30934908-G-A

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 1P and 13B. PP2BP4_StrongBP6BS1BS2

The NM_001303256.3(MORC2):c.2066C>T(p.Ala689Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000223 in 1,614,188 control chromosomes in the GnomAD database, with no homozygous occurrence. 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 Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00012 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000012 ( 0 hom. )

Consequence

MORC2
NM_001303256.3 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2B:1

Conservation

PhyloP100: 1.89

Variant links:

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 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -12 ACMG points.

PP2

Missense variant in gene, where missense usually causes diseases (based on misZ statistic), MORC2. . Gene score misZ 3.2251 (greater than the threshold 3.09). Trascript score misZ 4.4393 (greater than threshold 3.09). GenCC has associacion of gene with Leigh syndrome, Charcot-Marie-Tooth disease axonal type 2Z, developmental delay, impaired growth, dysmorphic facies, and axonal neuropathy.

BP4

Computational evidence support a benign effect (MetaRNN=0.034042716).

BP6

Variant 22-30934908-G-A is Benign according to our data. Variant chr22-30934908-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 571656.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=1, Uncertain_significance=2}.

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.000125 (19/152300) while in subpopulation AFR AF= 0.000457 (19/41560). AF 95% confidence interval is 0.000299. There are 0 homozygotes in gnomad4. There are 8 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

BS2

High AC in GnomAd4 at 19 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MORC2	NM_001303256.3 linkuse as main transcript	c.2066C>T	p.Ala689Val	missense_variant	19/26	ENST00000397641.8	NP_001290185.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MORC2	ENST00000397641.8 linkuse as main transcript	c.2066C>T	p.Ala689Val	missense_variant	19/26	5	NM_001303256.3	ENSP00000380763	P1	Q9Y6X9-1

Frequencies

GnomAD3 genomes

AF:

0.000125

AC:

AN:

152182

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000459

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

GnomAD3 exomes

AF:

0.0000199

AC:

AN:

251326

Hom.:

AF XY:

0.0000147

AC XY:

AN XY:

135828

show subpopulations

Gnomad AFR exome

AF:

0.000308

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS 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:

0.0000116

AC:

AN:

1461888

Hom.:

Cov.:

AF XY:

0.0000138

AC XY:

AN XY:

727248

show subpopulations

Gnomad4 AFR exome

AF:

0.000508

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.000125

AC:

AN:

152300

Hom.:

Cov.:

AF XY:

0.000107

AC XY:

AN XY:

74460

show subpopulations

Gnomad4 AFR

AF:

0.000457

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000164

Hom.:

Bravo

AF:

0.000140

ExAC

AF:

0.0000247

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:2Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Jun 21, 2024

Variant summary: MORC2 c.2066C>T (p.Ala689Val) results in a non-conservative amino acid change in the encoded protein sequence. Four of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 2e-05 in 251326 control chromosomes. The available data on variant occurrences in the general population are insufficient to allow any conclusion about variant significance. To our knowledge, no occurrence of c.2066C>T in individuals affected with Developmental Delay, Impaired Growth, Dysmorphic Facies, And Axonal Neuropathy and no experimental evidence demonstrating its impact on protein function have been reported. ClinVar contains an entry for this variant (Variation ID: 571656). Based on the evidence outlined above, the variant was classified as uncertain significance. -

Charcot-Marie-Tooth disease axonal type 2Z

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Mar 10, 2023

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. Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt MORC2 protein function. ClinVar contains an entry for this variant (Variation ID: 571656). This variant has not been reported in the literature in individuals affected with MORC2-related conditions. This variant is present in population databases (rs560948457, gnomAD 0.03%). This sequence change replaces alanine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 689 of the MORC2 protein (p.Ala689Val). -

Inborn genetic diseases

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Nov 11, 2019

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.065

BayesDel_addAF

Benign

-0.61

BayesDel_noAF

Benign

-0.81

CADD

Benign

DANN

Benign

0.53

DEOGEN2

Benign

0.022

T;.

Eigen

Benign

-0.94

Eigen_PC

Benign

-0.85

FATHMM_MKL

Benign

0.64

LIST_S2

Benign

0.56

T;T

M_CAP

Benign

0.0060

MetaRNN

Benign

0.034

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

-0.34

N;.

MutationTaster

Benign

1.0

N;N

PrimateAI

Benign

0.24

PROVEAN

Benign

0.40

N;N

REVEL

Benign

0.060

Sift

Benign

0.30

T;T

Sift4G

Benign

0.43

T;T

Polyphen

0.0

B;.

Vest4

0.074

MVP

0.082

MPC

0.15

ClinPred

0.010

GERP RS

3.2

Varity_R

0.014

gMVP

0.23

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.070

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over