TTYH3 p.Arg156Arg

Variant names:

• chr7-2647477-G-G
• ENST00000258796.12:c.

Your query was ambiguous. Multiple possible variants found:

• chr7-2647478--
• chr7-2647480-G-T
• chr7-2647480-G-C
• chr7-2647480-G-A
• chr7-2647478-C-A
• chr7-2647478-CGG-AGA

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The ENST00000258796.12(TTYH3):​c. variant causes a splice donor, intron change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 33)
• Consequence: TTYH3 ENST00000258796.12 splice_donor, intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.676
• Publications: 0 publications found

Genes affected

TTYH3 (HGNC:22222): (tweety family member 3) This gene encodes a member of the tweety family of proteins. Members of this family function as chloride anion channels. The encoded protein functions as a calcium(2+)-activated large conductance chloride(-) channel. [provided by RefSeq, Jul 2008]

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: ENST00000258796.12. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
There are no transcript annotations for this variant.

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TTYH3	ENST00000258796.12	TSL:1 MANE Select	c.		splice_donor intron	N/A	ENSP00000258796.7	Q9C0H2-1
	TTYH3	ENST00000913086.1		c.		splice_donor intron	N/A	ENSP00000583145.1
	TTYH3	ENST00000913085.1		c.		splice_donor intron	N/A	ENSP00000583144.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		0.68

Splicing

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

hg19: chr7-2687111;