rs7705177

Variant names:

• chr5-33446950-C-A
• rs7705177
• NM_152295.5:c.138+1546C>A

Your query was ambiguous. Multiple possible variants found:

• chr5-33446950-C-A
• chr5-33446950-C-T

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_152295.5(TARS1):​c.138+1546C>A variant causes a intron 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.

• Frequency: Genomes: not found (cov: 32)
• Consequence: TARS1 NM_152295.5 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.17
• Publications: 0 publications found

Genes affected

TARS1 (HGNC:11572): (threonyl-tRNA synthetase 1) Aminoacyl-tRNA synthetases catalyze the aminoacylation of tRNA by their cognate amino acid. Because of their central role in linking amino acids with nucleotide triplets contained in tRNAs, aminoacyl-tRNA synthetases are thought to be among the first proteins that appeared in evolution. Threonyl-tRNA synthetase belongs to the class-II aminoacyl-tRNA synthetase family [provided by RefSeq, Jul 2008]

TARS1 Gene-Disease associations (from GenCC):

• trichothiodystrophy 7, nonphotosensitive

  Inheritance: AR Classification: STRONG, MODERATE Submitted by: PanelApp Australia, G2P
• trichothiodystrophy

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.91).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_152295.5. 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
	TARS1	NM_152295.5	MANE Select	c.138+1546C>A		intron	N/A	NP_689508.3
	TARS1	NM_001258438.2		c.138+1546C>A		intron	N/A	NP_001245367.1	P26639-2
	TARS1	NM_001258437.1		c.138+1546C>A		intron	N/A	NP_001245366.1	P26639-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TARS1	ENST00000265112.8	TSL:1 MANE Select	c.138+1546C>A		intron	N/A	ENSP00000265112.3	P26639-1
	TARS1	ENST00000509731.5	TSL:1	n.*91+186C>A		intron	N/A	ENSP00000427304.1	D6RJ97
	TARS1	ENST00000455217.6	TSL:2	c.138+1546C>A		intron	N/A	ENSP00000387710.2	P26639-2

Frequencies

GnomAD3 genomes Cov.: 32

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

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.91
CADD	Benign	0.065
DANN	Benign	0.54
PhyloP100		-1.2

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: rs7705177; hg19: chr5-33447056;