dbSNP rs886037934: MORC2:p.Glu236Val (chr22-30941550-T-A) – ACMG Classification: Likely_pathogenic (6 pts)

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM2PM5PP2PP3

The NM_001303256.3(MORC2):c.707A>T(p.Glu236Val) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,460,790 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. E236G) has been classified as Pathogenic.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

MORC2
NM_001303256.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 7.67

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:

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ACMG classification

Classification made for transcript

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PM5

Other missense variant is known to change same aminoacid residue: Variant chr22-30941550-T-C is described in Lovd as [Pathogenic].

PP2

Missense variant in the MORC2 gene, where missense mutations are typically associated with disease (based on misZ statistic). The gene has 25 curated pathogenic missense variants (we use a threshold of 10). The gene has 13 curated benign missense variants. Gene score misZ: 3.2251 (above the threshold of 3.09). Trascript score misZ: 4.4393 (above the threshold of 3.09). GenCC associations: The gene is linked to Leigh syndrome, Charcot-Marie-Tooth disease axonal type 2Z, developmental delay, impaired growth, dysmorphic facies, and axonal neuropathy.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.79

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MORC2	NM_001303256.3 link	c.707A>T	p.Glu236Val	missense_variant	Exon 9 of 26	ENST00000397641.8	NP_001290185.1	Q9Y6X9-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
MORC2	ENST00000397641.8 link	c.707A>T	p.Glu236Val	missense_variant	Exon 9 of 26	5	NM_001303256.3	ENSP00000380763.2	Q9Y6X9-1
MORC2	ENST00000215862.8 link	c.521A>T	p.Glu174Val	missense_variant	Exon 10 of 27	1		ENSP00000215862.4	Q9Y6X9-2
MORC2	ENST00000469915.1 link	n.261A>T		non_coding_transcript_exon_variant	Exon 3 of 6	3
MORC2	ENST00000675601.1 link	n.549A>T		non_coding_transcript_exon_variant	Exon 5 of 22

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.85e-7

AC:

AN:

1460790

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726486

show subpopulations

Gnomad4 AFR exome

AF:

0.00

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:

9.00e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.96

BayesDel_addAF

Pathogenic

0.20

BayesDel_noAF

Uncertain

0.050

CADD

Pathogenic

DANN

Uncertain

0.99

DEOGEN2

Benign

0.30

T;.

Eigen

Pathogenic

0.74

Eigen_PC

Pathogenic

0.71

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.97

D;D

M_CAP

Benign

0.063

MetaRNN

Pathogenic

0.79

D;D

MetaSVM

Benign

-0.90

MutationAssessor

Pathogenic

3.4

M;.

PrimateAI

Uncertain

0.79

PROVEAN

Pathogenic

-6.1

D;D

REVEL

Uncertain

0.53

Sift

Uncertain

0.0050

D;D

Sift4G

Uncertain

0.0020

D;D

Polyphen

1.0

D;.

Vest4

0.88

MutPred

0.35

Gain of MoRF binding (P = 0.0159);.;

MVP

0.58

MPC

2.2

ClinPred

1.0

GERP RS

5.6

Varity_R

0.77

gMVP

0.82

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

Details are displayed if max score is > 0.2

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

Publications

No publications associated with this variant yet.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over