Genetic Variant C12orf57:p.Leu112Val (chr12-6945875-C-G) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_138425.4(C12orf57):c.334C>G(p.Leu112Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,302 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict 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. L112L) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

C12orf57
NM_138425.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.904

Publications

0 publications found

Variant links:

Genes affected

C12orf57 (HGNC:29521): (chromosome 12 open reading frame 57) This gene is ubiquitously expressed in human tissues. It is required for development of the human corpus callosum. Mutations in this gene are associated with Temtamy syndrome (TEMTYS). Multiple alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Sep 2014]

C12orf57 Gene-Disease associations (from GenCC):

temtamy syndrome
Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Ambry Genetics, G2P, Labcorp Genetics (formerly Invitae)

C12orf57 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.078116864).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
C12orf57	NM_138425.4 link	c.334C>G	p.Leu112Val	missense_variant	Exon 3 of 3	ENST00000229281.6	NP_612434.1	Q99622

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
C12orf57	ENST00000229281.6 link	c.334C>G	p.Leu112Val	missense_variant	Exon 3 of 3	1	NM_138425.4	ENSP00000229281.5		Q99622

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1461302

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726902

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33472

American (AMR)

AF:

0.00

AC:

AN:

44682

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26126

East Asian (EAS)

AF:

0.00

AC:

AN:

39682

South Asian (SAS)

AF:

0.00

AC:

AN:

86164

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53158

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

0.00000180

AC:

AN:

1111888

Other (OTH)

AF:

0.00

AC:

AN:

60364

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.083

BayesDel_addAF

Uncertain

0.075

BayesDel_noAF

Benign

-0.13

CADD

Benign

(source)

DANN

Benign

0.72

DEOGEN2

Benign

0.18

T;T;T;T

Eigen

Benign

-0.81

Eigen_PC

Benign

-0.79

FATHMM_MKL

Benign

0.21

LIST_S2

Benign

0.77

.;T;T;T

M_CAP

Benign

0.034

MetaRNN

Benign

0.078

T;T;T;T

MetaSVM

Benign

-0.92

MutationAssessor

Benign

0.34

N;.;N;.

PhyloP100

0.90

PROVEAN

Benign

-0.23

N;N;N;.

REVEL

Uncertain

0.41

Sift

Benign

0.60

T;D;T;.

Sift4G

Benign

0.25

T;T;T;T

Polyphen

0.36

B;.;B;.

Vest4

0.41, 0.36, 0.35

MutPred

0.18

Gain of catalytic residue at P108 (P = 0.0016);.;Gain of catalytic residue at P108 (P = 0.0016);.;

MVP

0.52

MPC

0.62

ClinPred

0.17

GERP RS

1.3

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.10

gMVP

0.34

Mutation Taster

=88/12

polymorphism

(source)

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

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over