3-191329942-TGGGGGG-TGG

Variant names:

• chr3-191329942-TGGGG-T
• rs34226642
• NM_178335.3:c.49+230_49+233delGGGG

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BS2

The NM_178335.3(CCDC50):​c.49+230_49+233delGGGG variant causes a intron change involving the alteration of a non-conserved nucleotide. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.0011 (1 hom., cov: 0)
• Consequence: CCDC50 NM_178335.3 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.55
• Publications: 0 publications found

Genes affected

CCDC50 (HGNC:18111): (coiled-coil domain containing 50) This gene encodes a soluble, cytoplasmic, tyrosine-phosphorylated protein with multiple ubiquitin-interacting domains. Mutations in this gene cause nonsyndromic, postlingual, progressive sensorineural DFNA44 hearing loss. In mouse, the protein is expressed in the inner ear during development and postnatal maturation and associates with microtubule-based structures. This protein may also function as a negative regulator of NF-kB signaling and as an effector of epidermal growth factor (EGF)-mediated cell signaling. Alternative splicing results in multiple transcript variants encoding distinct isoforms. [provided by RefSeq, Oct 2008]

UTS2B (HGNC:30894): (urotensin 2B) Predicted to enable G protein-coupled receptor binding activity. Predicted to be involved in regulation of blood pressure. Predicted to be located in extracellular region. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Our verdict: Likely_benign. The variant received -4 ACMG points.

• BS2: High AC in GnomAd4 at 116 AD,Unknown gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_178335.3. 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
	CCDC50	NM_178335.3	MANE Select	c.49+230_49+233delGGGG		intron	N/A	NP_848018.1	Q8IVM0-2
	UTS2B	NM_198152.5	MANE Select	c.-665+468_-665+471delCCCC		intron	N/A	NP_937795.2	Q765I0
	CCDC50	NM_174908.4		c.49+230_49+233delGGGG		intron	N/A	NP_777568.1	Q8IVM0-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CCDC50	ENST00000392455.9	TSL:1 MANE Select	c.49+220_49+223delGGGG		intron	N/A	ENSP00000376249.4	Q8IVM0-2
	UTS2B	ENST00000340524.10	TSL:2 MANE Select	c.-665+468_-665+471delCCCC		intron	N/A	ENSP00000340526.5	Q765I0
	CCDC50	ENST00000392456.4	TSL:1	c.49+220_49+223delGGGG		intron	N/A	ENSP00000376250.4	Q8IVM0-1

Frequencies

GnomAD3 genomes AF: 0.00113 AC: 116 AN: 102890 Hom.: 1 Cov.: 0

Gnomad AFR AF: 0.00334

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000199

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000306

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000455

Gnomad OTH AF: 0.00

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

GnomAD4 genome AF: 0.00113 AC: 116 AN: 102958 Hom.: 1 Cov.: 0 AF XY: 0.00103 AC XY: 50 AN XY: 48346

African (AFR) AF: 0.00333 AC: 111 AN: 33284

American (AMR) AF: 0.000198 AC: 2 AN: 10084

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 2498

East Asian (EAS) AF: 0.00 AC: 0 AN: 4286

South Asian (SAS) AF: 0.000307 AC: 1 AN: 3254

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 3534

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 208

European-Non Finnish (NFE) AF: 0.0000455 AC: 2 AN: 43990

Other (OTH) AF: 0.00 AC: 0 AN: 1356

Alfa AF: 0.00 Hom.: 0

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		2.6
Mutation Taster		=100/0	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

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

Other links and lift over

dbSNP: rs34226642; hg19: chr3-191047731;