rs179017

Positions:

• chrX-12875674-A-C

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_016562.4(TLR7):​c.3+8093A>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0583 in 111,354 control chromosomes in the GnomAD database, including 219 homozygotes. There are 1,899 hemizygotes in GnomAD. 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: 𝑓 0.058 (219 hom., 1899 hem., cov: 23)
• Consequence: TLR7 NM_016562.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.347

Genes affected

TLR7 (HGNC:15631): (toll like receptor 7) The protein encoded by this gene is a member of the Toll-like receptor (TLR) family which plays a fundamental role in pathogen recognition and activation of innate immunity. TLRs are highly conserved from Drosophila to humans and share structural and functional similarities. The human TLR family comprises 11 members. They recognize pathogen-associated molecular patterns (PAMPs) that are expressed on infectious agents, and mediate the production of cytokines necessary for the development of effective immunity. For the recognition of structural components in foreign microorganisms, the various TLRs exhibit different patterns of expression as well; in this way for example, TLR-3, -7, and -8 are essential in the recognition of single-stranded RNA viruses. TLR7 senses single-stranded RNA oligonucleotides containing guanosine- and uridine-rich sequences from RNA viruses, a recognition occuring in the endosomes of plasmacytoid dendritic cells and B cells. This gene is predominantly expressed in lung, placenta, and spleen, and is phylogenetically related and lies in close proximity to another family member, TLR8, on chromosome X. [provided by RefSeq, Aug 2020]

TLR7 (HGNC:):

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.92).
• BA1: GnomAd4 highest subpopulation (NFE) allele frequency at 95% confidence interval = 0.0893 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TLR7	NM_016562.4	c.3+8093A>C		intron_variant		ENST00000380659.4	NP_057646.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
TLR7	ENST00000380659.4	c.3+8093A>C		intron_variant		1	NM_016562.4	ENSP00000370034.3
TLR7	ENST00000484204.1	n.104-1770A>C		intron_variant		3

Frequencies

GnomAD3 genomes AF: 0.0584 AC: 6495 AN: 111300 Hom.: 219 Cov.: 23 AF XY: 0.0567 AC XY: 1899 AN XY: 33482

Gnomad AFR AF: 0.0106

Gnomad AMI AF: 0.0643

Gnomad AMR AF: 0.0326

Gnomad ASJ AF: 0.0325

Gnomad EAS AF: 0.000281

Gnomad SAS AF: 0.0146

Gnomad FIN AF: 0.123

Gnomad MID AF: 0.0295

Gnomad NFE AF: 0.0914

Gnomad OTH AF: 0.0523

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

GnomAD4 genome AF: 0.0583 AC: 6495 AN: 111354 Hom.: 219 Cov.: 23 AF XY: 0.0566 AC XY: 1899 AN XY: 33546

Gnomad4 AFR AF: 0.0105

Gnomad4 AMR AF: 0.0325

Gnomad4 ASJ AF: 0.0325

Gnomad4 EAS AF: 0.000282

Gnomad4 SAS AF: 0.0151

Gnomad4 FIN AF: 0.123

Gnomad4 NFE AF: 0.0914

Gnomad4 OTH AF: 0.0517

Alfa AF: 0.0861 Hom.: 497

Bravo AF: 0.0489

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.92
CADD	Benign	3.3
DANN	Benign	0.69

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

Publications

LitVar

Other links and lift over

dbSNP: rs179017; hg19: chrX-12893793;