19-41389882-G-T

Variant names:

• chr19-41389882-G-T
• rs547439208
• NM_020158.4:c.408C>A

Variant summary

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

The NM_020158.4(EXOSC5):​c.408C>A​(p.Ala136Ala) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. 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. A136A) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 33)
• Consequence: EXOSC5 NM_020158.4 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.63
• Publications: 0 publications found

Genes affected

EXOSC5 (HGNC:24662): (exosome component 5) Predicted to enable RNA binding activity. Involved in DNA deamination and exonucleolytic catabolism of deadenylated mRNA. Acts upstream of or within defense response to virus. Located in nucleolus; nucleoplasm; and transcriptionally active chromatin. Part of exosome (RNase complex). [provided by Alliance of Genome Resources, Apr 2022]

EXOSC5 Gene-Disease associations (from GenCC):

• cerebellar ataxia, brain abnormalities, and cardiac conduction defects

  Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)

ENSG00000255730 (HGNC:):

ACMG classification

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

• PM2: Very rare variant in population databases, with high coverage
• PP3: Splicing predictors support a deleterious effect. Scorers claiming Pathogenic: max_spliceai. No scorers claiming Uncertain. No scorers claiming Benign.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_020158.4. 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
	EXOSC5	NM_020158.4	MANE Select	c.408C>A	p.Ala136Ala	synonymous	Exon 4 of 6	NP_064543.3

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	EXOSC5	ENST00000221233.9	TSL:1 MANE Select	c.408C>A	p.Ala136Ala	synonymous	Exon 4 of 6	ENSP00000221233.3	Q9NQT4
	ENSG00000255730	ENST00000540732.3	TSL:2	c.210+11363G>T		intron	N/A	ENSP00000443246.1	F5H5P2
	EXOSC5	ENST00000593771.2	TSL:3	c.474C>A	p.Ala158Ala	synonymous	Exon 5 of 7	ENSP00000471557.2	M0R102

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 33

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000756

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.65
CADD	Benign	15
DANN	Benign	0.81
PhyloP100		-1.6

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.75		Details are displayed if max score is > 0.2
DS_AG_spliceai		0.75		Position offset: -2

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

Other links and lift over

dbSNP: rs547439208; hg19: chr19-41895787;