Genetic Variant C12orf57:c.-259T>C (chr12-6943863-T-C) – ACMG Classification: Benign (-20 pts)

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBA1

The NM_001301834.1(C12orf57):c.-16+201T>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00601 in 938,932 control chromosomes in the GnomAD database, including 145 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.017 ( 64 hom., cov: 33)

Exomes 𝑓: 0.0039 ( 81 hom. )

Consequence

C12orf57
NM_001301834.1 intron

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:2

Conservation

PhyloP100: -3.38

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 links:

RNU7-1 (HGNC:34033): (RNA, U7 small nuclear 1) Implicated in Aicardi-Goutieres syndrome. [provided by Alliance of Genome Resources, Apr 2022]

RNU7-1 links:

ENSG00000272173 (HGNC:):

ENSG00000272173 links:

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -20 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.65).

BP6

Variant 12-6943863-T-C is Benign according to our data. Variant chr12-6943863-T-C is described in ClinVar as [Benign]. Clinvar id is 1234510.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BA1

GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0524 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
C12orf57	NM_138425.4 link	c.-259T>C		upstream_gene_variant		ENST00000229281.6	NP_612434.1	Q99622

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
C12orf57	ENST00000229281.6 link	c.-259T>C		upstream_gene_variant		1	NM_138425.4	ENSP00000229281.5		Q99622

Frequencies

GnomAD3 genomes

AF:

0.0171

AC:

2599

AN:

152208

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0544

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0117

Gnomad ASJ

AF:

0.000288

Gnomad EAS

AF:

0.0125

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.0000941

Gnomad MID

AF:

0.00633

Gnomad NFE

AF:

0.000926

Gnomad OTH

AF:

0.0163

GnomAD4 exome

AF:

0.00387

AC:

3043

AN:

786606

Hom.:

Cov.:

AF XY:

0.00355

AC XY:

1400

AN XY:

394410

show subpopulations

Gnomad4 AFR exome

AF:

0.0592

Gnomad4 AMR exome

AF:

0.00865

Gnomad4 ASJ exome

AF:

0.000139

Gnomad4 EAS exome

AF:

0.0403

Gnomad4 SAS exome

AF:

0.000268

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000777

Gnomad4 OTH exome

AF:

0.00679

GnomAD4 genome

AF:

0.0171

AC:

2602

AN:

152326

Hom.:

Cov.:

AF XY:

0.0169

AC XY:

1261

AN XY:

74496

show subpopulations

Gnomad4 AFR

AF:

0.0543

Gnomad4 AMR

AF:

0.0117

Gnomad4 ASJ

AF:

0.000288

Gnomad4 EAS

AF:

0.0125

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.0000941

Gnomad4 NFE

AF:

0.000926

Gnomad4 OTH

AF:

0.0161

Alfa

AF:

0.00404

Hom.:

Bravo

AF:

0.0195

Asia WGS

AF:

0.00953

AC:

AN:

3478

ClinVar

Significance: Benign

Submissions summary: Benign:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:2

Breakthrough Genomics, Breakthrough Genomics

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: not provided

- -

Mar 28, 2021

GeneDx

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.65

CADD

Benign

0.0010

DANN

Benign

0.65

RBP_binding_hub_radar

1.1

RBP_regulation_power_radar

2.3

Splicing

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