chr16-23522469-T-G

Variant names:

• chr16-23522469-T-G
• rs534093776
• NM_001083614.2:c.*1902A>C

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 0P and 5B. BP4_Strong BS1_Supporting

The NM_001083614.2(EARS2):​c.*1902A>C variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000401 in 142,172 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: 𝑓 0.00040 (0 hom., cov: 32)
• Consequence: EARS2 NM_001083614.2 3_prime_UTR
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.646
• Publications: 0 publications found

Genes affected

EARS2 (HGNC:29419): (glutamyl-tRNA synthetase 2, mitochondrial) This gene encodes a member of the class I family of aminoacyl-tRNA synthetases. These enzymes play a critical role in protein biosynthesis by charging tRNAs with their cognate amino acids. This protein is encoded by the nuclear genome but is likely to be imported to the mitochondrion where it is thought to catalyze the ligation of glutamate to tRNA molecules. Mutations in this gene have been associated with combined oxidative phosphorylation deficiency 12 (COXPD12). Alternative splicing results in multiple transcript variants. [provided by RefSeq, Mar 2015]

GGA2 (HGNC:16064): (golgi associated, gamma adaptin ear containing, ARF binding protein 2) This gene encodes a member of the Golgi-localized, gamma adaptin ear-containing, ARF-binding (GGA) family. This family includes ubiquitous coat proteins that regulate the trafficking of proteins between the trans-Golgi network and the lysosome. These proteins share an amino-terminal VHS domain which mediates sorting of the mannose 6-phosphate receptors at the trans-Golgi network. They also contain a carboxy-terminal region with homology to the ear domain of gamma-adaptins. This family member may play a significant role in cargo molecules regulation and clathrin-coated vesicle assembly. [provided by RefSeq, Jul 2008]

ACMG classification

Our verdict: Likely_benign. The variant received -5 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.93).
• BS1: Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.000401 (57/142172) while in subpopulation AFR AF = 0.00162 (57/35088). AF 95% confidence interval is 0.00129. There are 0 homozygotes in GnomAd4. There are 23 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001083614.2. 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
	EARS2	NM_001083614.2	MANE Select	c.*1902A>C		3_prime_UTR	Exon 9 of 9	NP_001077083.1	Q5JPH6-1
	EARS2	NR_003501.2		n.3388A>C		non_coding_transcript_exon	Exon 10 of 10

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	EARS2	ENST00000449606.7	TSL:1 MANE Select	c.*1902A>C		3_prime_UTR	Exon 9 of 9	ENSP00000395196.2	Q5JPH6-1
	EARS2	ENST00000674054.1		n.*1809A>C		non_coding_transcript_exon	Exon 10 of 10	ENSP00000501251.1	Q5JPH6-1
	EARS2	ENST00000674054.1		n.*1809A>C		3_prime_UTR	Exon 10 of 10	ENSP00000501251.1	Q5JPH6-1

Frequencies

GnomAD3 genomes AF: 0.000401 AC: 57 AN: 142086 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00163

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

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: 0.00

Gnomad OTH AF: 0.00

GnomAD4 exome Cov.: 0

GnomAD4 genome AF: 0.000401 AC: 57 AN: 142172 Hom.: 0 Cov.: 32 AF XY: 0.000331 AC XY: 23 AN XY: 69538

African (AFR) AF: 0.00162 AC: 57 AN: 35088

American (AMR) AF: 0.00 AC: 0 AN: 14418

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3402

East Asian (EAS) AF: 0.00 AC: 0 AN: 5082

South Asian (SAS) AF: 0.00 AC: 0 AN: 4634

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 9936

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 286

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 66502

Other (OTH) AF: 0.00 AC: 0 AN: 1956

Alfa AF: 0.000142 Hom.: 0

Bravo AF: 0.000374

ClinVar

ClinVar submissions as Germline

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	Leukoencephalopathy-thalamus and brainstem anomalies-high lactate syndrome (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.93
CADD	Benign	5.1
DANN	Benign	0.69
PhyloP100		0.65
PromoterAI		0.00030	Neutral

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: rs534093776; hg19: chr16-23533790;