22-50217772-C-G

Variant names:

• chr22-50217772-C-G
• rs781068597
• NM_020461.4:c.5424G>C

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2 BP4_Strong BP7

The NM_020461.4(TUBGCP6):​c.5424G>C​(p.Leu1808Leu) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. L1808L) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 33)
• Consequence: TUBGCP6 NM_020461.4 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.134
• Publications: 0 publications found

Genes affected

TUBGCP6 (HGNC:18127): (tubulin gamma complex component 6) The protein encoded by this gene is part of a large multisubunit complex required for microtubule nucleation at the centrosome. [provided by RefSeq, Jul 2008]

SELENOO (HGNC:30395): (selenoprotein O) This gene encodes a selenoprotein that is localized to the mitochondria. It is the largest mammalian selenoprotein, containing the rare amino acid selenocysteine (Sec). Sec is encoded by the UGA codon, which normally signals translation termination. The 3' UTRs of selenoprotein mRNAs contain a conserved stem-loop structure, designated the Sec insertion sequence (SECIS) element, that is necessary for the recognition of UGA as a Sec codon, rather than as a stop signal. The exact function of this selenoprotein is not known, but it is thought to have redox activity. [provided by RefSeq, Dec 2016]

ACMG classification

Our verdict: Likely_benign. The variant received -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.63).
• BP7: Synonymous conserved (PhyloP=0.134 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_020461.4. 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
	TUBGCP6	NM_020461.4	MANE Select	c.5424G>C	p.Leu1808Leu	synonymous	Exon 25 of 25	NP_065194.3	Q96RT7-1
	SELENOO	NM_031454.2	MANE Select	c.*403C>G		downstream_gene	N/A	NP_113642.1	Q9BVL4

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TUBGCP6	ENST00000248846.10	TSL:1 MANE Select	c.5424G>C	p.Leu1808Leu	synonymous	Exon 25 of 25	ENSP00000248846.5	Q96RT7-1
	TUBGCP6	ENST00000425018.1	TSL:1	c.1431G>C	p.Leu477Leu	synonymous	Exon 10 of 10	ENSP00000405979.1	H7C2H5
	TUBGCP6	ENST00000439308.7	TSL:1	n.*1001G>C		non_coding_transcript_exon	Exon 25 of 25	ENSP00000397387.2	E7EQL8

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 34

GnomAD4 genome Cov.: 33

Alfa AF: 0.00 Hom.: 0

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.63
CADD	Benign	4.3
DANN	Benign	0.63
PhyloP100		0.13
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7

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: rs781068597; hg19: chr22-50656201;