rs3093542

Positions:

• chr6-31572916-G-A
• chr6-31572916-G-C
• chr6-31572916-G-T

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_000595.4(LTA):​c.100-12G>A variant causes a splice polypyrimidine tract, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,459,894 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.

• Frequency:
  • Genomes: not found (cov: 29)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: LTA NM_000595.4 splice_polypyrimidine_tract, intron
• Scores: Splicing: ADA: 0.00001769
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.18

Genes affected

LTA (HGNC:6709): (lymphotoxin alpha) The encoded protein, a member of the tumor necrosis factor family, is a cytokine produced by lymphocytes. The protein is highly inducible, secreted, and forms heterotrimers with lymphotoxin-beta which anchor lymphotoxin-alpha to the cell surface. This protein also mediates a large variety of inflammatory, immunostimulatory, and antiviral responses, is involved in the formation of secondary lymphoid organs during development and plays a role in apoptosis. Genetic variations in this gene are associated with susceptibility to leprosy type 4, myocardial infarction, non-Hodgkin's lymphoma, and psoriatic arthritis. Alternatively spliced transcript variants have been observed for this gene. [provided by RefSeq, Jul 2012]

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.83).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
LTA	NM_000595.4	c.100-12G>A		splice_polypyrimidine_tract_variant, intron_variant		ENST00000418386.3
LTA	NM_001159740.2	c.100-12G>A		splice_polypyrimidine_tract_variant, intron_variant
LTA	XM_047418773.1	c.100-12G>A		splice_polypyrimidine_tract_variant, intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
LTA	ENST00000418386.3	c.100-12G>A		splice_polypyrimidine_tract_variant, intron_variant		1	NM_000595.4	P1
LTA	ENST00000454783.5	c.100-12G>A		splice_polypyrimidine_tract_variant, intron_variant		2		P1
LTA	ENST00000471842.1	n.336G>A		non_coding_transcript_exon_variant	2/3	2
LTA	ENST00000489638.5	n.216G>A		non_coding_transcript_exon_variant	2/3	5

Frequencies

GnomAD3 genomes Cov.: 29

GnomAD3 exomes AF: 0.00000406 AC: 1 AN: 246190 Hom.: 0 AF XY: 0.00000745 AC XY: 1 AN XY: 134194

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.0000468

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 6.85e-7 AC: 1 AN: 1459894 Hom.: 0 Cov.: 35 AF XY: 0.00000138 AC XY: 1 AN XY: 726322

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.0000192

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 29

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.83
CADD	Benign	0.94
DANN	Benign	0.61

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.000018
dbscSNV1_RF	Benign	0.0040
SpliceAI score (max)		0.020		Details are displayed if max score is > 0.2

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

Publications

LitVar

Other links and lift over

dbSNP: rs3093542; hg19: chr6-31540693;