DRG2 p.Ile229Ile

Variant names:

• chr17-18101545-C-C
• ENST00000225729.8:c.

Your query was ambiguous. Multiple possible variants found:

• chr17-18101546--
• chr17-18101548-C-T
• chr17-18101548-C-A

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2 PP3

The ENST00000225729.8(DRG2):​c. variant causes a exon region change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 33)
• Consequence: DRG2 ENST00000225729.8 exon_region
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 9.21
• Publications: 0 publications found

Genes affected

DRG2 (HGNC:3030): (developmentally regulated GTP binding protein 2) This gene encodes a GTP-binding protein known to function in the regulation of cell growth and differentiation. Read-through transcripts containing this gene and a downstream gene have been identified, but they are not thought to encode a fusion protein. This gene is located within the Smith-Magenis syndrome region on chromosome 17. [provided by RefSeq, Jan 2012]

ACMG classification

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: No computational evidence supports a deleterious effect, but strongly conserved according to phyloP

Variant Effect in Transcripts

ACMG analysis was done for transcript: ENST00000225729.8. 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
There are no transcript annotations for this variant.

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DRG2	ENST00000225729.8	TSL:1 MANE Select	c.		exon_region	Exon 8 of 13	ENSP00000225729.3	P55039
	DRG2	ENST00000864168.1		c.		exon_region	Exon 8 of 13	ENSP00000534227.1
	DRG2	ENST00000968692.1		c.		exon_region	Exon 9 of 14	ENSP00000638751.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		9.2

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: chr17-18004859;