2-196767648-A-G

Variant names:

• chr2-196767648-A-G
• rs7604809
• NM_012086.5:c.2386-931T>C

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BP4_Strong

The NM_012086.5(GTF3C3):​c.2386-931T>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000092 in 152,238 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 0.000092 (0 hom., cov: 33)
• Consequence: GTF3C3 NM_012086.5 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.967
• Publications: 5 publications found

Genes affected

GTF3C3 (HGNC:4666): (general transcription factor IIIC subunit 3) The protein encoded by this gene is part of the TFIIIC2 complex, which binds to the promoters of small nuclear and cytoplasmic RNA genes in order to recruit RNA polymerase III. The TFIIIC2 complex is composed of six subunits. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Oct 2011]

GTF3C3 Gene-Disease associations (from GenCC):

• genetic developmental and epileptic encephalopathy

  Inheritance: AR Classification: LIMITED Submitted by: Ambry Genetics

ACMG classification

Our verdict: Likely_benign. The variant received -4 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.91).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_012086.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	GTF3C3	NM_012086.5	MANE Select	c.2386-931T>C		intron	N/A	NP_036218.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	GTF3C3	ENST00000263956.8	TSL:1 MANE Select	c.2386-931T>C		intron	N/A	ENSP00000263956.3
	GTF3C3	ENST00000929329.1		c.2413-931T>C		intron	N/A	ENSP00000599388.1
	GTF3C3	ENST00000929328.1		c.2410-931T>C		intron	N/A	ENSP00000599387.1

Frequencies

GnomAD3 genomes AF: 0.0000920 AC: 14 AN: 152120 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.0000242

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0000655

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: 0.000176

Gnomad OTH AF: 0.00

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.0000920 AC: 14 AN: 152238 Hom.: 0 Cov.: 33 AF XY: 0.0000672 AC XY: 5 AN XY: 74458

African (AFR) AF: 0.0000241 AC: 1 AN: 41528

American (AMR) AF: 0.0000654 AC: 1 AN: 15298

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5186

South Asian (SAS) AF: 0.00 AC: 0 AN: 4824

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10614

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.000176 AC: 12 AN: 68002

Other (OTH) AF: 0.00 AC: 0 AN: 2112

Alfa AF: 0.00 Hom.: 696

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.91
CADD	Benign	4.9
DANN	Benign	0.40
PhyloP100		0.97

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

Other links and lift over

dbSNP: rs7604809; hg19: chr2-197632372;