rs752798421

Variant names:

• chr1-234393668-G-A
• rs752798421
• NM_005646.4:c.4413C>T

Your query was ambiguous. Multiple possible variants found:

• chr1-234393668-G-A
• chr1-234393668-G-C
• chr1-234393668-G-T

Variant summary

Our verdict is Benign. The variant received -7 ACMG points: 0P and 7B. BP4_Strong BP6_Moderate BP7

The NM_005646.4(TARBP1):​c.4413C>T​(p.Ile1471Ile) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000167 in 1,611,980 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 Likely benign (★).

• Frequency:
  • Genomes: 𝑓 0.000033 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000015 (0 hom.)
• Consequence: TARBP1 NM_005646.4 synonymous
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 0.233
• Publications: 0 publications found

Genes affected

TARBP1 (HGNC:11568): (TAR (HIV-1) RNA binding protein 1) HIV-1, the causative agent of acquired immunodeficiency syndrome (AIDS), contains an RNA genome that produces a chromosomally integrated DNA during the replicative cycle. Activation of HIV-1 gene expression by the transactivator Tat is dependent on an RNA regulatory element (TAR) located downstream of the transcription initiation site. This element forms a stable stem-loop structure and can be bound by either the protein encoded by this gene or by RNA polymerase II. This protein may act to disengage RNA polymerase II from TAR during transcriptional elongation. Alternatively spliced transcripts of this gene may exist, but their full-length natures have not been determined. [provided by RefSeq, Jul 2008]

ACMG classification

Our verdict: Benign. The variant received -7 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.49).
• BP6: Variant 1-234393668-G-A is Benign according to our data. Variant chr1-234393668-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 3965416.Status of the report is criteria_provided_single_submitter, 1 stars.
• BP7: Synonymous conserved (PhyloP=0.233 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TARBP1	NM_005646.4	c.4413C>T	p.Ile1471Ile	synonymous_variant	Exon 27 of 30	ENST00000040877.2	NP_005637.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TARBP1	ENST00000040877.2	c.4413C>T	p.Ile1471Ile	synonymous_variant	Exon 27 of 30	1	NM_005646.4	ENSP00000040877.1
TARBP1	ENST00000462259.5	n.998C>T		non_coding_transcript_exon_variant	Exon 5 of 8	1
TARBP1	ENST00000483404.5	n.2401C>T		non_coding_transcript_exon_variant	Exon 4 of 7	2
TARBP1	ENST00000496673.5	n.378C>T		non_coding_transcript_exon_variant	Exon 3 of 5	5

Frequencies

GnomAD3 genomes AF: 0.0000329 AC: 5 AN: 152170 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000483

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000196

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

GnomAD2 exomes AF: 0.0000439 AC: 11 AN: 250730 AF XY: 0.0000369

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.000262

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000882

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000151 AC: 22 AN: 1459810 Hom.: 0 Cov.: 31 AF XY: 0.0000152 AC XY: 11 AN XY: 725888

African (AFR) AF: 0.00 AC: 0 AN: 33438

American (AMR) AF: 0.000269 AC: 12 AN: 44530

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26104

East Asian (EAS) AF: 0.0000504 AC: 2 AN: 39674

South Asian (SAS) AF: 0.0000348 AC: 3 AN: 86170

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53264

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5752

European-Non Finnish (NFE) AF: 0.00000360 AC: 4 AN: 1110548

Other (OTH) AF: 0.0000166 AC: 1 AN: 60330

GnomAD4 genome AF: 0.0000329 AC: 5 AN: 152170 Hom.: 0 Cov.: 32 AF XY: 0.0000538 AC XY: 4 AN XY: 74334

African (AFR) AF: 0.0000483 AC: 2 AN: 41420

American (AMR) AF: 0.000196 AC: 3 AN: 15282

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5198

South Asian (SAS) AF: 0.00 AC: 0 AN: 4832

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10612

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68032

Other (OTH) AF: 0.00 AC: 0 AN: 2094

Alfa AF: 0.0000386 Hom.: 0

Bravo AF: 0.0000529

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Benign:1

Apr 10, 2025

Ambry Genetics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.49
CADD	Benign	4.3
DANN	Benign	0.55
PhyloP100		0.23
Mutation Taster		=96/4	polymorphism

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: rs752798421; hg19: chr1-234529414; COSMIC: COSV50182502; COSMIC: COSV50182502;