chr22-38673201-C-T

Variant names:

• chr22-38673201-C-T
• rs193920893
• NM_015373.4:c.346C>T

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 2P and 3B. PM2 BP4_Moderate BP7

The NM_015373.4(CBY1):​c.346C>T​(p.Leu116Leu) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,460,390 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: CBY1 NM_015373.4 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.510
• Publications: 1 publications found

Genes affected

CBY1 (HGNC:1307): (chibby 1, beta catenin antagonist) Beta-catenin is a transcriptional activator and oncoprotein involved in the development of several cancers. The protein encoded by this gene interacts directly with the C-terminal region of beta-catenin, inhibiting oncogenic beta-catenin-mediated transcriptional activation by competing with transcription factors for binding to beta-catenin. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

TOMM22-DT (HGNC:56758): (TOMM22 divergent transcript)

ACMG classification

Our verdict: Likely_benign. The variant received -1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.41).
• BP7: Synonymous conserved (PhyloP=-0.51 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CBY1	NM_015373.4	c.346C>T	p.Leu116Leu	synonymous_variant	Exon 5 of 5	ENST00000216029.8	NP_056188.1
CBY1	NM_001002880.4	c.346C>T	p.Leu116Leu	synonymous_variant	Exon 6 of 6		NP_001002880.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CBY1	ENST00000216029.8	c.346C>T	p.Leu116Leu	synonymous_variant	Exon 5 of 5	1	NM_015373.4	ENSP00000216029.3

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1460390 Hom.: 0 Cov.: 29 AF XY: 0.00 AC XY: 0 AN XY: 726622

African (AFR) AF: 0.00 AC: 0 AN: 33454

American (AMR) AF: 0.00 AC: 0 AN: 44720

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26098

East Asian (EAS) AF: 0.00 AC: 0 AN: 39694

South Asian (SAS) AF: 0.00 AC: 0 AN: 86232

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53394

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5764

European-Non Finnish (NFE) AF: 0.00000180 AC: 2 AN: 1110700

Other (OTH) AF: 0.00 AC: 0 AN: 60334

GnomAD4 genome Cov.: 31

Alfa AF: 0.0000312 Hom.: 0

Bravo AF: 0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.41
CADD	Benign	2.5
DANN	Benign	0.81
PhyloP100		-0.51

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs193920893; hg19: chr22-39069206;