Genetic Variant C12orf57:c.-247C>A (chr12-6943875-C-A) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_001301834.1(C12orf57):c.-16+213C>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000287 in 974,368 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000032 ( 0 hom. )

Consequence

C12orf57
NM_001301834.1 intron

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 2.51

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 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 Gene-Disease associations (from GenCC):

Aicardi-Goutieres syndrome 9
Inheritance: AR Classification: STRONG, MODERATE Submitted by: Illumina, Labcorp Genetics (formerly Invitae), PanelApp Australia

RNU7-1 links:

ENSG00000272173 (HGNC:):

ENSG00000272173 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.47).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001301834.1. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	HGVSc	Effect	Exon Rank	Protein	UniProt
C12orf57	NM_001301834.1	c.-16+213C>A	intron	N/A	NP_001288763.1	Q99622
C12orf57	NM_001301836.2	c.13+213C>A	intron	N/A	NP_001288765.1
RNU7-1	NR_023317.1	n.60C>A	non_coding_transcript_exon	Exon 1 of 1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
C12orf57	ENST00000544681.1	TSL:2	c.-247C>A	5_prime_UTR	Exon 1 of 2	ENSP00000475422.1	U3KQ07
C12orf57	ENST00000537087.5	TSL:2	c.-247C>A	5_prime_UTR	Exon 1 of 3	ENSP00000440937.1	F5GXW5
C12orf57	ENST00000921170.1		c.-247C>A	5_prime_UTR	Exon 1 of 2	ENSP00000591229.1

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152134

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.000479

GnomAD4 exome

AF:

0.0000316

AC:

AN:

822234

Hom.:

Cov.:

AF XY:

0.0000292

AC XY:

AN XY:

411650

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

18406

American (AMR)

AF:

0.00

AC:

AN:

17574

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

15174

East Asian (EAS)

AF:

0.0000341

AC:

AN:

29324

South Asian (SAS)

AF:

0.0000374

AC:

AN:

53406

European-Finnish (FIN)

AF:

0.00

AC:

AN:

24410

Middle Eastern (MID)

AF:

0.00

AC:

AN:

2658

European-Non Finnish (NFE)

AF:

0.0000368

AC:

AN:

624236

Other (OTH)

AF:

0.00

AC:

AN:

37046

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.477

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

AF:

0.0000131

AC:

AN:

152134

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74316

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41432

American (AMR)

AF:

0.00

AC:

AN:

15282

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3466

East Asian (EAS)

AF:

0.00

AC:

AN:

5198

South Asian (SAS)

AF:

0.000207

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10602

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68012

Other (OTH)

AF:

0.000479

AC:

AN:

2088

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.500

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.47

CADD

Benign

(source)

DANN

Benign

0.73

PhyloP100

2.5

PromoterAI

-0.0023

Neutral

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over