NM_005994.4:c.195_203delGGCGGCGGC

Variant names:

• chr17-61400362-CGCGGCGGCG-C
• rs539663160
• NM_005994.4:c.195_203delGGCGGCGGC

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 0P and 2B. BP3 BS2_Supporting

The NM_005994.4(TBX2):​c.195_203delGGCGGCGGC​(p.Ala66_Ala68del) variant causes a disruptive inframe deletion change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000677 in 886,820 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000068 (0 hom.)
• Consequence: TBX2 NM_005994.4 disruptive_inframe_deletion
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.91

Genes affected

TBX2 (HGNC:11597): (T-box transcription factor 2) This gene is a member of a phylogenetically conserved family of genes that share a common DNA-binding domain, the T-box. T-box genes encode transcription factors involved in the regulation of developmental processes. This gene product is the human homolog of mouse Tbx2, and shares strong sequence similarity with Drosophila omb protein. Expression studies indicate that this gene may have a potential role in tumorigenesis as an immortalizing agent. Transcript heterogeneity due to alternative polyadenylation has been noted for this gene. [provided by RefSeq, Jul 2008]

TBX2-AS1 (HGNC:50355): (TBX2 antisense RNA 1)

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• BP3: Nonframeshift variant in repetitive region in NM_005994.4
• BS2: High AC in GnomAdExome4 at 6 AD gene. Variant has AC lower than other variant known as pathogenic in the gene, so the strength is limited to Supporting.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TBX2	NM_005994.4	c.195_203delGGCGGCGGC	p.Ala66_Ala68del	disruptive_inframe_deletion	Exon 1 of 7	ENST00000240328.4	NP_005985.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TBX2	ENST00000240328.4	c.195_203delGGCGGCGGC	p.Ala66_Ala68del	disruptive_inframe_deletion	Exon 1 of 7	1	NM_005994.4	ENSP00000240328.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000677 AC: 6 AN: 886820 Hom.: 0 AF XY: 0.00000482 AC XY: 2 AN XY: 415130

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.000141

Gnomad4 SAS exome AF: 0.0000561

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000501

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs539663160; hg19: chr17-59477723;