NM_022173.4:c.223-4_223-3dupTT

Variant names:

• chr2-70229320-T-TAA
• rs750862626
• NM_022173.4:c.223-4_223-3dupTT

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 0P and 0B.

The NM_022173.4(TIA1):​c.223-4_223-3dupTT variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000315 in 1,078,056 control chromosomes in the GnomAD database, with no homozygous occurrence. There is a variant allele frequency bias in the population database for this variant (GnomAdExome4), which may indicate mosaicism or somatic mutations in the reference population data. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: 𝑓 0.0 (0 hom., cov: 30)
  • Exomes 𝑓: 0.000032 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: TIA1 NM_022173.4 splice_region, intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.61
• Publications: 0 publications found

Genes affected

TIA1 (HGNC:11802): (TIA1 cytotoxic granule associated RNA binding protein) The product encoded by this gene is a member of a RNA-binding protein family and possesses nucleolytic activity against cytotoxic lymphocyte (CTL) target cells. It has been suggested that this protein may be involved in the induction of apoptosis as it preferentially recognizes poly(A) homopolymers and induces DNA fragmentation in CTL targets. The major granule-associated species is a 15-kDa protein that is thought to be derived from the carboxyl terminus of the 40-kDa product by proteolytic processing. Alternative splicing resulting in different isoforms has been found for this gene. [provided by RefSeq, May 2017]

C2orf42 (HGNC:26056): (chromosome 2 open reading frame 42) Located in nucleoplasm. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_022173.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TIA1	NM_022173.4	MANE Select	c.223-4_223-3dupTT		splice_region intron	N/A	NP_071505.2
	TIA1	NM_001351508.2		c.223-4_223-3dupTT		splice_region intron	N/A	NP_001338437.1
	TIA1	NM_001351509.2		c.229-4_229-3dupTT		splice_region intron	N/A	NP_001338438.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TIA1	ENST00000433529.7	TSL:2 MANE Select	c.223-3_223-2insTT		splice_region intron	N/A	ENSP00000401371.2
	TIA1	ENST00000415783.6	TSL:1	c.223-3_223-2insTT		splice_region intron	N/A	ENSP00000404023.2
	TIA1	ENST00000416149.6	TSL:1	c.223-3_223-2insTT		splice_region intron	N/A	ENSP00000413751.2

Frequencies

GnomAD3 genomes AF: 0.00 AC: 0 AN: 145262 Hom.: 0 Cov.: 30

Gnomad AFR AF: 0.00

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

GnomAD2 exomes AF: 0.000149 AC: 15 AN: 100452 AF XY: 0.000170

Gnomad AFR exome AF: 0.000129

Gnomad AMR exome AF: 0.000270

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.000135

Gnomad FIN exome AF: 0.000102

Gnomad NFE exome AF: 0.000161

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000315 AC: 34 AN: 1078056 Hom.: 0 Cov.: 30 AF XY: 0.0000242 AC XY: 13 AN XY: 536526

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.0000417 AC: 1 AN: 23964

American (AMR) AF: 0.000130 AC: 4 AN: 30814

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 18748

East Asian (EAS) AF: 0.00 AC: 0 AN: 29662

South Asian (SAS) AF: 0.0000485 AC: 3 AN: 61878

European-Finnish (FIN) AF: 0.0000509 AC: 2 AN: 39328

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 4218

European-Non Finnish (NFE) AF: 0.0000291 AC: 24 AN: 825426

Other (OTH) AF: 0.00 AC: 0 AN: 44018

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 145262 Hom.: 0 Cov.: 30 AF XY: 0.00 AC XY: 0 AN XY: 70520

African (AFR) AF: 0.00 AC: 0 AN: 39700

American (AMR) AF: 0.00 AC: 0 AN: 14578

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3388

East Asian (EAS) AF: 0.00 AC: 0 AN: 5046

South Asian (SAS) AF: 0.00 AC: 0 AN: 4588

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 9040

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 304

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 65740

Other (OTH) AF: 0.00 AC: 0 AN: 1990

Alfa AF: 0.000617 Hom.: 1

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		-1.6

Splicing

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

Other links and lift over

dbSNP: rs750862626; hg19: chr2-70456452;