NM_014285.7:c.21T>G

Variant names:

• chr9-130693812-T-G
• rs765985454
• NM_014285.7:c.21T>G

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2 BP4_Strong BP7

The NM_014285.7(EXOSC2):​c.21T>G​(p.Leu7Leu) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000686 in 1,456,736 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. Synonymous variant affecting the same amino acid position (i.e. L7L) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: EXOSC2 NM_014285.7 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.287
• Publications: 0 publications found

Genes affected

EXOSC2 (HGNC:17097): (exosome component 2) Predicted to enable RNA binding activity. Involved in positive regulation of cell growth. Located in cytoplasm; nucleolus; and nucleoplasm. Part of nuclear exosome (RNase complex). [provided by Alliance of Genome Resources, Apr 2022]

EXOSC2 Gene-Disease associations (from GenCC):

• retinitis pigmentosa-hearing loss-premature aging-short stature-facial dysmorphism syndrome

  Inheritance: AR Classification: STRONG, SUPPORTIVE, LIMITED Submitted by: G2P, Orphanet, Labcorp Genetics (formerly Invitae), Ambry Genetics

ACMG classification

Our verdict: Likely_benign. The variant received -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.53).
• BP7: Synonymous conserved (PhyloP=0.287 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_014285.7. 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
	EXOSC2	NM_014285.7	MANE Select	c.21T>G	p.Leu7Leu	synonymous	Exon 1 of 9	NP_055100.2
	EXOSC2	NM_001282708.1		c.21T>G	p.Leu7Leu	synonymous	Exon 1 of 8	NP_001269637.1	Q13868-2
	EXOSC2	NM_001282709.1		c.21T>G	p.Leu7Leu	synonymous	Exon 1 of 8	NP_001269638.1	Q13868-3

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	EXOSC2	ENST00000372358.10	TSL:1 MANE Select	c.21T>G	p.Leu7Leu	synonymous	Exon 1 of 9	ENSP00000361433.5	Q13868-1
	EXOSC2	ENST00000851443.1		c.21T>G	p.Leu7Leu	synonymous	Exon 1 of 10	ENSP00000521502.1
	EXOSC2	ENST00000495699.3	TSL:3	c.21T>G	p.Leu7Leu	synonymous	Exon 1 of 8	ENSP00000418463.3	A3KFL5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.86e-7 AC: 1 AN: 1456736 Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0 AN XY: 724896

African (AFR) AF: 0.00 AC: 0 AN: 33340

American (AMR) AF: 0.00 AC: 0 AN: 44452

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26044

East Asian (EAS) AF: 0.0000253 AC: 1 AN: 39464

South Asian (SAS) AF: 0.00 AC: 0 AN: 86074

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 52816

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5744

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1108758

Other (OTH) AF: 0.00 AC: 0 AN: 60044

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.53
CADD	Benign	8.5
DANN	Benign	0.76
PhyloP100		0.29
PromoterAI		0.092	Neutral
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7

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: rs765985454; hg19: chr9-133569199;