4-190026403-GTC-ATA

Variant names:

• chr4-190026403-GTC-ATA
• NM_001286820.2:c.313_315delGACinsTAT
• FRG2 p.Asp105Tyr

Variant summary

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

The NM_001286820.2(FRG2):​c.313_315delGACinsTAT​(p.Asp105Tyr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. It is difficult to determine the true allele frequency of this variant because it is of type MNV, and the frequency of such variant types in population databases may be underestimated and unreliable. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another nucleotide change resulting in the same amino acid substitution has been previously reported as Uncertain significance in ClinVar.

• Frequency: Genomes: not found (cov: 23)
• Consequence: FRG2 NM_001286820.2 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.741
• Publications: 0 publications found

Genes affected

FRG2 (HGNC:19136): (FSHD region gene 2) Predicted to be located in nucleus. [provided by Alliance of Genome Resources, Apr 2022]

ENSG00000297175 (HGNC:):

ACMG classification

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

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001286820.2. 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
	FRG2	NM_001286820.2	MANE Select	c.313_315delGACinsTAT	p.Asp105Tyr	missense	N/A	NP_001273749.1	Q64ET8-2
	FRG2	NM_001005217.4		c.310_312delGACinsTAT	p.Asp104Tyr	missense	N/A	NP_001005217.1	Q64ET8-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FRG2	ENST00000504750.6	TSL:1 MANE Select	c.313_315delGACinsTAT	p.Asp105Tyr	missense	N/A	ENSP00000424015.1	Q64ET8-2
	FRG2	ENST00000378763.1	TSL:1	c.310_312delGACinsTAT	p.Asp104Tyr	missense	N/A	ENSP00000368039.1	Q64ET8-1
	ENSG00000297175	ENST00000745955.1		n.270-1592_270-1590delGTCinsATA		intron	N/A

Frequencies

GnomAD3 genomes Cov.: 23

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

GnomAD4 genome Cov.: 23

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		0.74

Splicing

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

hg19: chr4-190947558;